/* ===================================================================
   CON CÁ VÀ CHÉN CƠM - LANDING PAGE STYLES
   Design inspired by clean, fresh green & warm cream aesthetic
   =================================================================== */

/* ---------------- CSS RESET & VARIABLES ---------------- */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

:root {
  /* Brand Color Palette - Con Cá và Chén Cơm */
  --bg-page: #F8FAFC;
  --bg-page-subtle: #F1F5F9;
  --bg-white: #FFFFFF;
  --bg-card: #FFFFFF;
  --bg-dark: #0A1938;
  --bg-dark-surface: #0E2A5E;
  
  --primary-blue: #1547A6;
  --primary-blue-hover: #0D3A8F;
  --primary-blue-light: #EAF2FF;
  --primary-blue-border: #BFDBFE;

  --primary-green: #1547A6;
  --primary-green-hover: #0D3A8F;
  --primary-green-light: #EAF2FF;
  --primary-green-border: #BFDBFE;

  --accent-emerald: #10B981;
  --accent-emerald-light: #ECFDF5;
  --accent-gold: #F59E0B;
  --accent-gold-light: #FEF3C7;
  --accent-orange: #EA580C;
  --accent-orange-hover: #C2410C;
  --accent-red: #EF4444;
  --accent-red-light: #FEE2E2;

  --text-dark: #011963;
  --text-body: #334155;
  --text-muted: #64748B;
  --text-light: #F8FAFC;

  --border-subtle: rgba(21, 71, 166, 0.08);
  --border-card: #E2E8F0;

  --shadow-sm: 0 2px 8px rgba(10, 25, 56, 0.04);
  --shadow-md: 0 12px 32px rgba(21, 71, 166, 0.08);
  --shadow-lg: 0 20px 48px rgba(21, 71, 166, 0.12);
  --shadow-phone: 0 25px 60px -15px rgba(21, 71, 166, 0.22);

  --radius-sm: 10px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --radius-xl: 32px;
  --radius-pill: 9999px;

  --font-heading: 'Lexend', 'Be Vietnam Pro', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-body: 'Be Vietnam Pro', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;

  --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-normal: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
  /* Bắt buộc trình duyệt tôn trọng đúng width=device-width của viewport meta,
     tránh việc nội dung tràn (marquee...) khiến layout viewport bị nới rộng ra
     và đẩy các phần tử khác (nút bấm trong modal...) ra ngoài vùng hiển thị thật
     trên điện thoại. */
  overflow-x: hidden;
  width: 100%;
}

body {
  font-family: var(--font-body);
  background-color: var(--bg-page);
  color: var(--text-body);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

/* ---------------- TYPOGRAPHY & UTILS ---------------- */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  color: var(--text-dark);
  font-weight: 700;
  line-height: 1.25;
}

p {
  color: var(--text-body);
}

a {
  text-decoration: none;
  color: inherit;
  transition: color var(--transition-fast);
}

.container {
  width: 100%;
  max-width: 1200px;
  margin-left: auto;
  margin-right: auto;
  padding-left: 24px;
  padding-right: 24px;
}

.text-center {
  text-align: center;
}

.section {
  padding: 100px 0;
  position: relative;
}

.section-header {
  max-width: 760px;
  margin: 0 auto 60px;
}

.section-tag {
  display: inline-block;
  font-family: var(--font-heading);
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--primary-green);
  background: var(--primary-green-light);
  padding: 6px 16px;
  border-radius: var(--radius-pill);
  margin-bottom: 16px;
  border: 1px solid var(--primary-green-border);
}

.section-tag-orange {
  color: var(--accent-orange);
  background: #FFF2EB;
  border-color: #FDDCCB;
}

.section-title {
  font-size: 2.5rem;
  letter-spacing: -0.01em;
  line-height: 1.3;
  margin-bottom: 18px;
  color: var(--primary-green);
}

.section-subtitle {
  font-size: 1.125rem;
  color: var(--text-muted);
  line-height: 1.6;
}

/* ---------------- BUTTONS ---------------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  font-family: var(--font-heading);
  font-weight: 600;
  cursor: pointer;
  border: none;
  border-radius: var(--radius-pill);
  transition: all var(--transition-normal);
  text-align: center;
}

.btn-primary {
  background-color: var(--primary-green);
  color: #FFFFFF;
  padding: 12px 24px;
  box-shadow: 0 4px 14px rgba(13, 92, 48, 0.25);
}

.btn-primary:hover {
  background-color: var(--primary-green-hover);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(13, 92, 48, 0.35);
}

.btn-hero-cta {
  background: linear-gradient(135deg, #1547A6 0%, #1E5FD8 100%);
  color: #FFFFFF;
  padding: 16px 36px;
  border-radius: var(--radius-pill);
  box-shadow: 0 10px 25px rgba(21, 71, 166, 0.3);
  font-size: 1.1rem;
  display: inline-flex;
  flex-direction: column;
  align-items: center;
  position: relative;
  overflow: hidden;
}

.btn-hero-cta .btn-text {
  font-size: 1.125rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  gap: 8px;
}

.btn-hero-cta .btn-subtext {
  font-size: 0.78rem;
  font-weight: 400;
  opacity: 0.85;
}

.btn-hero-cta .btn-icon {
  position: absolute;
  right: 20px;
  top: 50%;
  transform: translateY(-50%);
  transition: transform var(--transition-fast);
}

.btn-hero-cta:hover {
  background: linear-gradient(135deg, #0D3A8F 0%, #1547A6 100%);
  transform: translateY(-2px);
  box-shadow: 0 14px 30px rgba(21, 71, 166, 0.4);
}

.btn-hero-cta:hover .btn-icon {
  transform: translateY(-50%) translateX(4px);
}

.btn-outline-hero {
  background: transparent;
  color: var(--text-dark);
  border: 1.5px solid rgba(21, 71, 166, 0.25);
  padding: 14px 28px;
  font-size: 1rem;
}

.btn-outline-hero:hover {
  background: #FFFFFF;
  border-color: var(--primary-green);
  color: var(--primary-green);
  transform: translateY(-2px);
  box-shadow: var(--shadow-sm);
}

.navbar {
  position: sticky;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background-color: rgba(248, 250, 252, 0.95);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid rgba(21, 71, 166, 0.1);
  transition: all var(--transition-fast);
}

.nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 78px;
  /* Thanh điều hướng được phép rộng hơn khung nội dung chính (1200px) để đủ chỗ
     cho 8 mục menu + 2 nút CTA trên 1 dòng, tránh bị bóp chữ xuống dòng. */
  max-width: 1440px;
  gap: 16px;
}

.brand-logo {
  display: flex;
  align-items: center;
  gap: 12px;
}

.header-brand-logo {
  height: 48px;
  width: auto;
  max-width: 220px;
  object-fit: contain;
  display: block;
  transition: transform var(--transition-fast);
}

.header-brand-logo:hover {
  transform: scale(1.03);
}

.footer-brand-logo {
  height: 52px;
  width: auto;
  max-width: 240px;
  object-fit: contain;
  display: block;
  margin-bottom: 12px;
}

.logo-icon-wrap {
  width: 40px;
  height: 40px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  box-shadow: 0 4px 10px rgba(13, 92, 48, 0.15);
}

.logo-svg {
  width: 100%;
  height: 100%;
}

.brand-text {
  display: flex;
  flex-direction: column;
}

.brand-title {
  font-family: var(--font-heading);
  font-size: 1.15rem;
  font-weight: 800;
  color: var(--primary-green);
  line-height: 1.15;
}

.brand-badge {
  font-size: 0.72rem;
  font-weight: 700;
  color: #B45309;
  letter-spacing: 0.04em;
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 20px;
  flex-shrink: 1;
  min-width: 0;
}

.nav-link {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-dark);
  position: relative;
  padding: 6px 0;
  white-space: nowrap;
  flex-shrink: 0;
}

.nav-link:hover,
.nav-link.active {
  color: var(--primary-green);
  font-weight: 600;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0%;
  height: 2px;
  background-color: var(--primary-green);
  border-radius: 2px;
  transition: width var(--transition-fast);
}

.nav-link:hover::after,
.nav-link.active::after {
  width: 100%;
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
}

.nav-cta {
  padding: 10px 18px;
  font-size: 0.88rem;
  white-space: nowrap;
}

.mobile-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: transparent;
  border: none;
  cursor: pointer;
  padding: 6px;
}

/* CTA đăng ký/vào dùng ngay bên trong menu mobile - ẩn mặc định, chỉ hiện khi thu gọn xuống mobile */
.nav-menu-ctas {
  display: none;
}

.mobile-toggle span {
  width: 24px;
  height: 2.5px;
  background-color: var(--text-dark);
  border-radius: 2px;
  transition: all var(--transition-fast);
}

/* ---------------- HERO SECTION ---------------- */
.hero-section {
  padding: 60px 0 0;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: #FFFFFF;
  border: 1px solid var(--border-card);
  padding: 8px 18px;
  border-radius: var(--radius-pill);
  box-shadow: var(--shadow-sm);
  margin-bottom: 24px;
}

.badge-dot {
  width: 8px;
  height: 8px;
  background-color: var(--accent-emerald);
  border-radius: 50%;
  animation: pulse-dot 2s infinite ease-in-out;
}

@keyframes pulse-dot {
  0% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.7); }
  70% { transform: scale(1.15); box-shadow: 0 0 0 8px rgba(16, 185, 129, 0); }
  100% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(16, 185, 129, 0); }
}

.badge-text {
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--primary-green);
}

.hero-headline {
  font-size: 3.25rem;
  font-weight: 800;
  line-height: 1.3;
  letter-spacing: -0.01em;
  color: var(--primary-green);
  max-width: 920px;
  margin: 0 auto 24px;
}

.hero-headline .text-highlight {
  color: var(--accent-orange);
  position: relative;
  display: inline-block;
}

.hero-subheadline {
  font-size: 1.25rem;
  color: var(--text-body);
  max-width: 780px;
  margin: 0 auto 24px;
  line-height: 1.6;
}

.slogan-pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--accent-gold-light);
  color: #92400E;
  padding: 8px 20px;
  border-radius: var(--radius-pill);
  font-size: 0.95rem;
  margin-bottom: 36px;
  border: 1px solid #FDE68A;
}

.hero-cta-group {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  margin-bottom: 24px;
  flex-wrap: wrap;
}

.hero-meta-note {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-bottom: 50px;
  flex-wrap: wrap;
}

.meta-divider {
  color: #CBD5E1;
}

/* ---------------- HERO MOCKUP VISUAL (SUNBURST + 3 PHONES) ---------------- */
.hero-mockup-wrapper {
  position: relative;
  max-width: 1000px;
  margin: 0 auto;
  padding-bottom: 0;
  display: flex;
  justify-content: center;
}

/* Golden / Amber Half Arch background */
.sunburst-arch {
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 580px;
  height: 290px;
  background: linear-gradient(180deg, #FBBF24 0%, #F59E0B 100%);
  border-top-left-radius: 300px;
  border-top-right-radius: 300px;
  z-index: 1;
  opacity: 0.92;
}

.phones-trio {
  display: flex;
  align-items: flex-end;
  justify-content: center;
  position: relative;
  z-index: 2;
  gap: 18px;
  padding-top: 30px;
}

/* Phone Mockup Frames */
.phone-mockup {
  position: relative;
  transition: transform var(--transition-normal);
}

.phone-left {
  transform: rotate(-7deg) translateY(24px);
}

.phone-right {
  transform: rotate(7deg) translateY(24px);
}

.phone-center {
  transform: translateY(-8px);
  z-index: 5;
}

.phone-mockup:hover {
  transform: translateY(-16px) scale(1.02);
}

.phone-left:hover {
  transform: rotate(-4deg) translateY(6px) scale(1.02);
}

.phone-right:hover {
  transform: rotate(4deg) translateY(6px) scale(1.02);
}

.phone-frame {
  width: 250px;
  height: 500px;
  background: #1E293B;
  border-radius: 38px;
  padding: 10px;
  box-shadow: var(--shadow-phone);
  border: 4px solid #334155;
  position: relative;
  overflow: hidden;
}

.center-frame {
  width: 280px;
  height: 550px;
  border-radius: 42px;
  border: 4px solid #0F172A;
  box-shadow: 0 30px 70px -10px rgba(13, 92, 48, 0.35);
}

.phone-notch {
  width: 90px;
  height: 18px;
  background: #0F172A;
  border-radius: 0 0 12px 12px;
  position: absolute;
  top: 10px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 10;
}

.phone-screen {
  background: #F8FAF9;
  width: 100%;
  height: 100%;
  border-radius: 30px;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  padding: 24px 14px 14px;
  position: relative;
  font-size: 0.8rem;
  text-align: left;
}

/* Mock Screen Contents */
.mock-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.7rem;
  font-weight: 600;
  color: #64748B;
  margin-bottom: 12px;
  padding-top: 4px;
}

.mock-title {
  color: var(--primary-green);
  font-weight: 700;
}

.mock-app-title {
  font-weight: 800;
  color: var(--primary-green);
  font-size: 0.85rem;
}

.mock-date-pill {
  background: #E2E8F0;
  color: #334155;
  font-size: 0.7rem;
  font-weight: 600;
  padding: 4px 10px;
  border-radius: var(--radius-pill);
  align-self: flex-start;
  margin-bottom: 12px;
}

/* FAP Schedule cards inside Left phone */
.fap-card {
  background: #FFFFFF;
  border: 1px solid #E2E8F0;
  border-radius: 12px;
  padding: 10px;
  margin-bottom: 10px;
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.04);
}

.fap-card.active {
  border-left: 4px solid var(--accent-emerald);
}

.fap-slot-tag {
  font-size: 0.68rem;
  font-weight: 700;
  color: var(--primary-green);
}

.slot-next {
  color: #D97706;
}

.fap-subject {
  font-size: 0.82rem;
  font-weight: 700;
  color: var(--text-dark);
  margin: 2px 0 6px;
}

.fap-room-status {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.68rem;
}

.room-pill {
  color: #475569;
  font-weight: 600;
}

.status-pill {
  padding: 2px 6px;
  border-radius: 4px;
  font-weight: 700;
}

.status-ok {
  background: #DCFCE7;
  color: #15803D;
}

.status-warn {
  background: #FEF3C7;
  color: #B45309;
}

.mock-mini-stat {
  margin-top: auto;
  background: #FFFFFF;
  border-radius: 10px;
  padding: 8px 10px;
  display: flex;
  justify-content: space-between;
  font-size: 0.68rem;
  color: #64748B;
  border: 1px dashed #CBD5E1;
}

.mini-check {
  color: var(--accent-emerald);
  font-weight: 700;
}

/* Center Phone UI */
.mock-week-strip {
  display: flex;
  justify-content: space-between;
  margin-bottom: 14px;
}

.day-chip {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 4px 6px;
  border-radius: 8px;
  font-size: 0.65rem;
  color: #64748B;
}

.day-chip.active {
  background: var(--primary-green);
  color: #FFFFFF;
  font-weight: 700;
}

.hero-circle-stat {
  background: linear-gradient(145deg, #1547A6 0%, #1E5FD8 100%);
  border-radius: 20px;
  padding: 16px 12px;
  color: #FFFFFF;
  text-align: center;
  margin-bottom: 14px;
  box-shadow: 0 8px 20px rgba(21, 71, 166, 0.25);
}

.circle-val {
  font-family: var(--font-heading);
  font-size: 2.2rem;
  font-weight: 800;
  display: block;
  line-height: 1;
}

.circle-lbl {
  font-size: 0.75rem;
  opacity: 0.9;
  letter-spacing: 0.02em;
}

.stat-pills-row {
  display: flex;
  justify-content: center;
  gap: 6px;
  margin-top: 10px;
}

.stat-pills-row span {
  font-size: 0.62rem;
  padding: 3px 6px;
  border-radius: 6px;
  font-weight: 600;
}

.chip-green { background: rgba(255, 255, 255, 0.2); color: #FFFFFF; }
.chip-orange { background: rgba(251, 191, 36, 0.3); color: #FEF08A; }
.chip-blue { background: rgba(56, 189, 248, 0.25); color: #E0F2FE; }

.mock-task-preview {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-bottom: auto;
}

.mock-task-item {
  background: #FFFFFF;
  border-radius: 10px;
  padding: 8px 10px;
  display: flex;
  align-items: center;
  gap: 8px;
  border: 1px solid #E2E8F0;
}

.mock-task-item.high {
  border-left: 3px solid #EF4444;
}

.mock-task-item.med {
  border-left: 3px solid #3B82F6;
}

.task-checkbox {
  width: 14px;
  height: 14px;
  border-radius: 4px;
  border: 1.5px solid #94A3B8;
}

.task-content {
  display: flex;
  flex-direction: column;
  font-size: 0.68rem;
}

.task-content strong {
  color: #1E293B;
}

.task-content span {
  color: #64748B;
  font-size: 0.62rem;
}

.mock-bottom-bar {
  display: flex;
  align-items: center;
  justify-content: space-around;
  background: #FFFFFF;
  padding: 8px 4px 2px;
  border-top: 1px solid #E2E8F0;
  margin: 0 -14px -14px;
  font-size: 1rem;
}

.mock-tab-add {
  background: var(--primary-green);
  color: #FFFFFF;
  width: 26px;
  height: 26px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  font-weight: 700;
}

/* Right Phone UI: Eisenhower Matrix */
.matrix-grid-mock {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 6px;
  margin-bottom: 12px;
}

.m-quad {
  border-radius: 10px;
  padding: 8px 6px;
  display: flex;
  flex-direction: column;
  gap: 3px;
  min-height: 80px;
}

.quad-title {
  font-size: 0.65rem;
  font-weight: 800;
}

.quad-task {
  font-size: 0.6rem;
  color: #334155;
  line-height: 1.2;
}

.quad-do { background: #FEE2E2; }
.quad-do .quad-title { color: #DC2626; }

.quad-plan { background: #DCFCE7; }
.quad-plan .quad-title { color: #16A34A; }

.quad-delegate { background: #FEF3C7; }
.quad-delegate .quad-title { color: #D97706; }

.quad-eliminate { background: #F1F5F9; }
.quad-eliminate .quad-title { color: #64748B; }

.ai-speech-bubble {
  background: #FFFFFF;
  border: 1px solid #CBD5E1;
  border-radius: 12px;
  padding: 10px;
  font-size: 0.68rem;
  margin-top: auto;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
}

.ai-sparkle {
  color: #4F46E5;
  font-weight: 800;
  display: block;
  margin-bottom: 2px;
}

.ai-speech-bubble p {
  font-size: 0.64rem;
  color: #334155;
  line-height: 1.35;
}

/* ---------------- HIGHLIGHT MARQUEE STRIP ---------------- */
.highlight-strip {
  background-color: var(--bg-dark);
  color: #FFFFFF;
  padding: 18px 0;
  overflow: hidden;
  white-space: nowrap;
  position: relative;
  z-index: 10;
  box-shadow: 0 4px 20px rgba(10, 25, 56, 0.25);
}

.strip-track {
  display: inline-flex;
  animation: marquee-scroll 25s linear infinite;
}

.strip-content {
  display: inline-flex;
  align-items: center;
  gap: 20px;
  font-family: var(--font-heading);
  font-size: 1.05rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  padding-right: 20px;
}

.strip-content .dot {
  color: var(--accent-gold);
  font-size: 1.4rem;
}

@keyframes marquee-scroll {
  0% { transform: translateX(0); }
  100% { transform: translateX(-50%); }
}

/* ---------------- BENEFITS SECTION (WHY CHOOSE US) ---------------- */
.benefits-section {
  background-color: var(--bg-page);
}

.benefits-showcase-grid {
  display: grid;
  grid-template-columns: 1fr 340px 1fr;
  align-items: center;
  gap: 32px;
  max-width: 1140px;
  margin: 0 auto;
}

.benefit-col {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.benefit-card {
  background: var(--bg-card);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-lg);
  padding: 32px 28px;
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-normal);
  position: relative;
}

.benefit-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: var(--primary-green-border);
}

.benefit-icon-box {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--primary-green-light);
  color: var(--primary-green);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 18px;
}

.benefit-card-title {
  font-size: 1.25rem;
  color: var(--text-dark);
  margin-bottom: 12px;
  line-height: 1.35;
}

.benefit-card-desc {
  font-size: 0.95rem;
  color: var(--text-body);
  line-height: 1.6;
  margin-bottom: 16px;
}

.benefit-tag {
  display: inline-block;
  font-size: 0.78rem;
  font-weight: 700;
  color: var(--primary-green);
  background: var(--primary-green-light);
  padding: 4px 12px;
  border-radius: var(--radius-pill);
}

/* Center Phone in Benefits */
.benefit-col-center {
  display: flex;
  justify-content: center;
}

.benefit-phone-frame {
  width: 320px;
  height: 580px;
  background: #0F172A;
  border-radius: 42px;
  padding: 10px;
  box-shadow: var(--shadow-phone);
  border: 4px solid #1E293B;
  position: relative;
}

.center-app-hero {
  display: flex;
  justify-content: center;
  margin: 16px 0;
}

.circular-progress-wrap {
  position: relative;
  width: 140px;
  height: 140px;
}

.circular-progress {
  width: 100%;
  height: 100%;
  transform: rotate(-90deg);
}

.progress-bg {
  fill: none;
  stroke: #E2E8F0;
  stroke-width: 8;
}

.progress-bar {
  fill: none;
  stroke: var(--primary-green);
  stroke-width: 8;
  stroke-dasharray: 264;
  stroke-dashoffset: 70;
  stroke-linecap: round;
}

.progress-info {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  text-align: center;
}

.progress-num {
  font-family: var(--font-heading);
  font-size: 1.7rem;
  font-weight: 800;
  color: var(--primary-green);
  display: block;
  line-height: 1;
}

.progress-sub {
  font-size: 0.65rem;
  color: #64748B;
  font-weight: 600;
}

.mini-summary-boxes {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
  margin-bottom: 16px;
}

.s-box {
  background: #FFFFFF;
  border: 1px solid #E2E8F0;
  border-radius: 12px;
  padding: 10px;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  font-size: 0.72rem;
}

.s-box-icon {
  font-size: 1.2rem;
  margin-bottom: 2px;
}

.s-box strong {
  font-size: 0.95rem;
  color: #0F172A;
}

.s-box span {
  color: #64748B;
  font-size: 0.68rem;
}

.ai-widget-card {
  background: #FFFFFF;
  border: 1px solid #C7D2FE;
  border-radius: 14px;
  padding: 12px;
  margin-top: auto;
  box-shadow: 0 4px 12px rgba(99, 102, 241, 0.08);
}

.ai-widget-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 6px;
}

.gemini-badge {
  background: linear-gradient(135deg, #4F46E5, #06B6D4);
  color: #FFFFFF;
  font-size: 0.62rem;
  font-weight: 700;
  padding: 2px 6px;
  border-radius: 4px;
}

.ai-time {
  font-size: 0.6rem;
  color: #94A3B8;
}

.ai-widget-text {
  font-size: 0.72rem;
  color: #334155;
  line-height: 1.35;
  margin-bottom: 8px;
}

.ai-action-btn {
  width: 100%;
  background: var(--primary-green);
  color: #FFFFFF;
  border: none;
  border-radius: 6px;
  padding: 6px;
  font-size: 0.72rem;
  font-weight: 700;
  cursor: pointer;
}

/* ---------------- PROBLEMS SECTION (NỖI ĐAU) ---------------- */
.problems-section {
  background-color: var(--bg-page-subtle);
  border-top: 1px solid var(--border-card);
  border-bottom: 1px solid var(--border-card);
}

.problems-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.problem-card {
  background: var(--bg-card);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-lg);
  padding: 30px 24px;
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-normal);
  display: flex;
  flex-direction: column;
}

.problem-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: #FCA5A5;
}

.problem-icon {
  font-size: 2rem;
  margin-bottom: 16px;
}

.problem-title {
  font-size: 1.2rem;
  color: #991B1B;
  margin-bottom: 10px;
}

.problem-desc {
  font-size: 0.92rem;
  color: var(--text-body);
  line-height: 1.55;
}

/* ---------------- HOW IT WORKS (LỘ TRÌNH 4 BƯỚC) ---------------- */
.how-it-works-section {
  background-color: var(--bg-page);
}

.steps-flow {
  display: flex;
  flex-direction: column;
  gap: 40px;
  max-width: 980px;
  margin: 0 auto;
}

.step-card {
  display: grid;
  grid-template-columns: 80px 1fr 340px;
  align-items: center;
  gap: 32px;
  background: #FFFFFF;
  border: 1px solid var(--border-card);
  border-radius: var(--radius-xl);
  padding: 36px 40px;
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-normal);
}

.step-card.reverse {
  grid-template-columns: 80px 340px 1fr;
}

.step-card.reverse .step-content {
  order: 3;
}

.step-card.reverse .step-preview-box {
  order: 2;
}

.step-card:hover {
  box-shadow: var(--shadow-md);
  border-color: var(--primary-green-border);
}

.step-badge-number {
  width: 64px;
  height: 64px;
  border-radius: 50%;
  background: var(--primary-green);
  color: #FFFFFF;
  font-family: var(--font-heading);
  font-size: 1.8rem;
  font-weight: 800;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 6px 16px rgba(13, 92, 48, 0.25);
}

.step-meta {
  font-size: 0.78rem;
  font-weight: 800;
  color: var(--primary-green);
  letter-spacing: 0.08em;
  display: block;
  margin-bottom: 6px;
}

.step-title {
  font-size: 1.5rem;
  color: var(--text-dark);
  margin-bottom: 12px;
}

.step-desc {
  font-size: 0.96rem;
  color: var(--text-body);
  line-height: 1.6;
  margin-bottom: 16px;
}

.step-bullet-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.step-bullet-list li {
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--primary-green);
}

/* Step UI Previews */
.step-preview-box {
  background: #F8FAF9;
  border: 1px solid #E2E8F0;
  border-radius: var(--radius-lg);
  padding: 18px;
}

.ui-fap-sync {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.fap-sync-btn {
  background: #DCFCE7;
  color: #15803D;
  font-size: 0.82rem;
  font-weight: 700;
  padding: 8px 12px;
  border-radius: 8px;
  display: flex;
  align-items: center;
  gap: 6px;
}

.synced-item {
  background: #FFFFFF;
  border: 1px solid #CBD5E1;
  padding: 8px 12px;
  border-radius: 8px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.78rem;
  font-weight: 600;
}

.tag-sync {
  background: #F1F5F9;
  padding: 2px 6px;
  border-radius: 4px;
  font-size: 0.7rem;
  color: #475569;
}

.matrix-demo {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
}

.mini-quad {
  padding: 10px;
  border-radius: 8px;
  display: flex;
  flex-direction: column;
  font-size: 0.72rem;
}

.mini-quad strong { margin-bottom: 4px; }
.mini-quad.red { background: #FEE2E2; color: #991B1B; }
.mini-quad.green { background: #DCFCE7; color: #166534; }
.mini-quad.yellow { background: #FEF3C7; color: #92400E; }
.mini-quad.gray { background: #F1F5F9; color: #475569; }

.freetime-demo {
  text-align: center;
}

.free-hours-banner {
  background: var(--primary-green);
  color: #FFFFFF;
  padding: 12px;
  border-radius: 12px;
  margin-bottom: 12px;
}

.free-val {
  font-size: 1.8rem;
  font-weight: 800;
  display: block;
  line-height: 1;
}

.free-sub {
  font-size: 0.75rem;
  opacity: 0.9;
}

.slot-free-bars {
  font-size: 0.78rem;
  text-align: left;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.text-success { color: #15803D; }

.ai-demo {
  background: #FFFFFF;
  border: 1px solid #E2E8F0;
  border-radius: 12px;
  padding: 14px;
}

.ai-avatar-row {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 10px;
}

.ai-badge-circle {
  font-size: 1.2rem;
}

.ai-online {
  display: block;
  font-size: 0.65rem;
  color: var(--accent-emerald);
}

.ai-chat-bubble {
  background: #F1F5F9;
  border-radius: 10px;
  padding: 10px;
  font-size: 0.78rem;
  color: #334155;
  line-height: 1.4;
}

/* ---------------- ECOSYSTEM ROW ---------------- */
.ecosystem-section {
  padding: 50px 0;
  background: #FFFFFF;
  border-top: 1px solid var(--border-card);
  border-bottom: 1px solid var(--border-card);
}

.ecosystem-title {
  font-size: 1.15rem;
  color: var(--text-dark);
  margin-bottom: 24px;
}

.brand-logos-row {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 24px;
  flex-wrap: wrap;
}

.brand-item {
  display: flex;
  align-items: center;
  gap: 8px;
  background: var(--bg-page);
  padding: 10px 20px;
  border-radius: var(--radius-pill);
  border: 1px solid var(--border-card);
}

.brand-icon-logo {
  font-size: 1.2rem;
}

.brand-name {
  font-size: 0.92rem;
  font-weight: 700;
  color: var(--text-dark);
}

/* ---------------- ALL FEATURES GRID ---------------- */
.features-grid-3col {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.feature-box {
  background: #FFFFFF;
  border: 1px solid var(--border-card);
  border-radius: var(--radius-lg);
  padding: 32px 24px;
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-normal);
}

.feature-box:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: var(--primary-green-border);
}

.feature-box-icon {
  font-size: 2rem;
  margin-bottom: 16px;
}

.feature-box h4 {
  font-size: 1.25rem;
  color: var(--primary-green);
  margin-bottom: 10px;
}

.feature-box p {
  font-size: 0.92rem;
  color: var(--text-body);
  line-height: 1.6;
}

/* ---------------- APP DOWNLOAD BANNER (DARK GREEN CONTAINER) ---------------- */
.app-download-banner-section {
  padding: 60px 0;
}

.app-banner-card {
  background: linear-gradient(135deg, #0A1938 0%, #0E2A5E 50%, #1547A6 100%);
  border-radius: var(--radius-xl);
  padding: 60px 60px;
  color: #FFFFFF;
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  align-items: center;
  gap: 40px;
  box-shadow: 0 25px 60px rgba(10, 25, 56, 0.35);
  position: relative;
  overflow: hidden;
}

.app-banner-card::before {
  content: '';
  position: absolute;
  top: -100px;
  right: -100px;
  width: 350px;
  height: 350px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(251, 191, 36, 0.25) 0%, rgba(251, 191, 36, 0) 70%);
  pointer-events: none;
}

.banner-badge {
  display: inline-block;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  background: rgba(255, 255, 255, 0.15);
  padding: 6px 14px;
  border-radius: var(--radius-pill);
  margin-bottom: 16px;
}

.banner-title {
  color: #FFFFFF;
  font-size: 2.3rem;
  line-height: 1.2;
  margin-bottom: 16px;
}

.banner-desc {
  color: #E2E8F0;
  font-size: 1.05rem;
  line-height: 1.6;
  margin-bottom: 28px;
}

.banner-actions {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-bottom: 24px;
}

.btn-banner-cta {
  background: #FFFFFF;
  color: var(--primary-green);
  font-size: 1.05rem;
  font-weight: 700;
  padding: 16px 28px;
  border-radius: var(--radius-pill);
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.15);
  align-self: flex-start;
}

.btn-banner-cta:hover {
  background: #F8FAFC;
  transform: translateY(-2px);
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.25);
  color: #064E26;
}

.banner-note {
  font-size: 0.82rem;
  color: #CBD5E1;
}

.banner-features-check {
  display: flex;
  gap: 16px;
  font-size: 0.85rem;
  font-weight: 600;
  color: #FEF08A;
  flex-wrap: wrap;
}

.app-banner-visual {
  display: flex;
  justify-content: center;
}

.qr-mockup-box {
  background: #FFFFFF;
  border-radius: var(--radius-lg);
  padding: 24px;
  display: flex;
  flex-direction: column;
  align-items: center;
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.25);
  max-width: 240px;
  text-align: center;
}

.qr-code-holder {
  width: 160px;
  height: 160px;
  margin-bottom: 14px;
}

.qr-svg {
  width: 100%;
  height: 100%;
}

.qr-scan-label strong {
  display: block;
  font-size: 0.85rem;
  color: var(--text-dark);
}

.qr-scan-label span {
  font-size: 0.78rem;
  color: var(--primary-green);
  font-weight: 700;
}

/* ---------------- TESTIMONIALS SECTION ---------------- */
.testimonials-section {
  background-color: var(--bg-page);
}

.testimonials-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.testimonial-card {
  background: #FFFFFF;
  border: 1px solid var(--border-card);
  border-radius: var(--radius-lg);
  padding: 32px 28px;
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  position: relative;
  transition: all var(--transition-normal);
}

.testimonial-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}

.featured-testimonial {
  border: 2px solid var(--primary-green);
  box-shadow: var(--shadow-md);
}

.featured-badge {
  position: absolute;
  top: -12px;
  right: 24px;
  background: var(--primary-green);
  color: #FFFFFF;
  font-size: 0.72rem;
  font-weight: 700;
  padding: 4px 12px;
  border-radius: var(--radius-pill);
}

.stars {
  color: #F59E0B;
  font-size: 1.1rem;
  margin-bottom: 14px;
  letter-spacing: 2px;
}

.testimonial-quote {
  font-size: 0.95rem;
  color: var(--text-body);
  line-height: 1.65;
  margin-bottom: 24px;
  font-style: italic;
}

.student-author {
  display: flex;
  align-items: center;
  gap: 12px;
}

.student-avatar {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  color: #FFFFFF;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.9rem;
}

.av-1 { background: var(--primary-blue); }
.av-2 { background: #EA580C; }
.av-3 { background: #0284C7; }

.student-info strong {
  display: block;
  font-size: 0.95rem;
  color: var(--text-dark);
}

.student-info span {
  font-size: 0.8rem;
  color: var(--text-muted);
}

/* ---------------- FAQ SECTION ---------------- */
.faq-section {
  background-color: var(--bg-page-subtle);
  border-top: 1px solid var(--border-card);
}

.faq-accordion-wrap {
  max-width: 800px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.faq-item {
  background: #FFFFFF;
  border: 1px solid var(--border-card);
  border-radius: var(--radius-md);
  padding: 20px 24px;
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-fast);
}

.faq-item[open] {
  border-color: var(--primary-green-border);
}

.faq-question {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-family: var(--font-heading);
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text-dark);
  cursor: pointer;
  list-style: none;
}

.faq-question::-webkit-details-marker {
  display: none;
}

.faq-icon {
  font-size: 1.4rem;
  font-weight: 400;
  color: var(--primary-green);
  transition: transform var(--transition-fast);
}

.faq-item[open] .faq-icon {
  transform: rotate(45deg);
}

.faq-answer {
  margin-top: 14px;
  padding-top: 14px;
  border-top: 1px solid #F1F5F9;
  font-size: 0.95rem;
  color: var(--text-body);
  line-height: 1.6;
}

/* ---------------- FINAL CTA SECTION ---------------- */
.final-cta-section {
  padding: 100px 0;
  background-color: var(--bg-page);
}

.final-cta-box {
  background: #FFFFFF;
  border: 1px solid var(--border-card);
  border-radius: var(--radius-xl);
  padding: 60px 40px;
  box-shadow: var(--shadow-md);
  max-width: 900px;
  margin: 0 auto;
}

.final-tag {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 800;
  letter-spacing: 0.1em;
  color: var(--accent-orange);
  background: #FFF7ED;
  padding: 6px 16px;
  border-radius: var(--radius-pill);
  margin-bottom: 16px;
}

.final-title {
  font-size: 2.5rem;
  color: var(--primary-green);
  margin-bottom: 16px;
}

.final-desc {
  font-size: 1.15rem;
  color: var(--text-body);
  max-width: 680px;
  margin: 0 auto 32px;
}

.final-btn-wrap {
  margin-bottom: 16px;
}

.final-cta-btn {
  font-size: 1.15rem;
  padding: 18px 40px;
}

.final-subnote {
  font-size: 0.85rem;
  color: var(--text-muted);
}

/* ---------------- FOOTER ---------------- */
.footer {
  background-color: var(--bg-dark);
  color: #E2E8F0;
  padding: 70px 0 30px;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
}

.footer-container {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 50px;
}

.footer-logo .brand-title {
  color: #FFFFFF;
}

.footer-tagline {
  font-family: var(--font-heading);
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--accent-gold);
  margin: 14px 0 10px;
}

.footer-subtext {
  font-size: 0.88rem;
  color: #94A3B8;
  line-height: 1.6;
}

.footer-col-title {
  color: #FFFFFF;
  font-size: 1.1rem;
  margin-bottom: 20px;
}

.footer-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-links a {
  color: #94A3B8;
  font-size: 0.9rem;
}

.footer-links a:hover {
  color: #FFFFFF;
  padding-left: 4px;
}

.footer-access-box p {
  font-size: 0.85rem;
  color: #94A3B8;
  margin-bottom: 8px;
}

.domain-badge {
  display: inline-block;
  background: rgba(255, 255, 255, 0.15);
  color: #FFFFFF;
  font-weight: 700;
  padding: 8px 16px;
  border-radius: 8px;
  font-size: 0.92rem;
  margin-bottom: 10px;
  transition: all var(--transition-fast);
}

.domain-badge:hover {
  background: var(--accent-gold);
  color: #0A1938;
}

.secure-tag {
  font-size: 0.78rem;
  color: #60A5FA;
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  padding-top: 24px;
}

.footer-bottom-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.82rem;
  color: #A7C5B2;
  flex-wrap: wrap;
  gap: 12px;
}

.footer-bottom-links {
  display: flex;
  gap: 20px;
}

.footer-bottom-links a {
  color: #A7C5B2;
}

.footer-bottom-links a:hover {
  color: #FFFFFF;
}

/* ===================================================================
   RESPONSIVE DESIGN (TABLETS & MOBILE)
   =================================================================== */

@media (max-width: 1024px) {
  .hero-headline {
    font-size: 2.6rem;
  }
  
  .benefits-showcase-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .benefit-col-center {
    order: -1;
  }

  .step-card,
  .step-card.reverse {
    grid-template-columns: 60px 1fr;
    gap: 20px;
    padding: 28px;
  }

  .step-preview-box {
    grid-column: 1 / -1;
    order: 3 !important;
  }

  .features-grid-3col {
    grid-template-columns: repeat(2, 1fr);
  }

  .problems-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .app-banner-card {
    grid-template-columns: 1fr;
    padding: 40px 30px;
    text-align: center;
  }

  .btn-banner-cta {
    align-self: center;
  }

  .banner-features-check {
    justify-content: center;
  }

  .footer-container {
    grid-template-columns: 1fr 1fr;
    gap: 30px;
  }
}

/* Thanh điều hướng chuyển sang menu rút gọn (hamburger) sớm hơn các phần còn lại
   của trang (1280px thay vì 768px): 8 mục menu + 2 nút CTA cần nhiều chỗ, ở các
   màn hình laptop nhỏ/tablet (1024-1279px) chúng sẽ bị đè chồng lên nhau nếu vẫn
   cố hiển thị 1 dòng ngang. Tách riêng breakpoint cho nav để không ảnh hưởng tới
   layout các phần khác (vốn chỉ cần đổi ở mốc điện thoại thật 768px). */
@media (max-width: 1280px) {
  .nav-menu {
    display: none;
    position: absolute;
    top: 78px;
    left: 0;
    right: 0;
    background: #FFFFFF;
    flex-direction: column;
    padding: 24px;
    gap: 16px;
    box-shadow: var(--shadow-md);
    border-bottom: 1px solid var(--border-card);
  }

  .nav-menu.active {
    display: flex;
  }

  .mobile-toggle {
    display: flex;
    padding: 10px;
  }

  /* Ẩn 2 nút CTA khỏi thanh header để hamburger không bị đẩy tràn ra ngoài / đè lên menu */
  .header-cta-desktop {
    display: none;
  }

  /* Hiện lại 2 nút CTA bên trong menu sổ xuống, xếp dọc, full width */
  .nav-menu-ctas {
    display: flex;
    flex-direction: column;
    gap: 12px;
    width: 100%;
    margin-top: 8px;
    padding-top: 16px;
    border-top: 1px solid var(--border-card);
  }

  .nav-menu-ctas .btn {
    width: 100%;
    justify-content: center;
  }
}

@media (max-width: 768px) {
  .hero-headline {
    font-size: 2rem;
  }

  .hero-subheadline {
    font-size: 1.05rem;
  }

  .sunburst-arch {
    width: 320px;
    height: 160px;
  }

  /* Keep hero phone clean on mobile */
  .phones-trio {
    gap: 6px;
  }

  .phone-left, .phone-right {
    display: none; /* Focus on main center phone on small mobile */
  }

  .phone-center {
    transform: none;
  }

  .problems-grid,
  .features-grid-3col,
  .testimonials-grid {
    grid-template-columns: 1fr;
  }

  .footer-container {
    grid-template-columns: 1fr;
  }

  .footer-bottom-inner {
    flex-direction: column;
    text-align: center;
  }
}

/* ===================================================================
   6 REAL BENEFITS GRID (DẠNG THẺ CÓ ICON)
   =================================================================== */
.benefits-grid-6col {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
  max-width: 1200px;
  margin: 0 auto;
}

@media (max-width: 1024px) {
  .benefits-grid-6col {
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
  }
}

@media (max-width: 640px) {
  .benefits-grid-6col {
    grid-template-columns: 1fr;
    gap: 16px;
  }
}

.real-benefit-card {
  background: var(--bg-card);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-lg);
  padding: 30px 24px;
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-normal);
  display: flex;
  flex-direction: column;
  position: relative;
  overflow: hidden;
}

.real-benefit-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, #1547A6, #3B82F6);
  opacity: 0;
  transition: opacity var(--transition-fast);
}

.real-benefit-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: var(--primary-blue-border);
}

.real-benefit-card:hover::before {
  opacity: 1;
}

.real-benefit-icon {
  width: 54px;
  height: 54px;
  border-radius: 16px;
  background: linear-gradient(135deg, var(--primary-blue-light) 0%, #DBEAFE 100%);
  color: var(--primary-blue);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  margin-bottom: 20px;
  box-shadow: 0 4px 12px rgba(21, 71, 166, 0.12);
}

.real-benefit-title {
  font-size: 1.18rem;
  color: var(--text-dark);
  font-weight: 700;
  margin-bottom: 12px;
  line-height: 1.35;
}

.real-benefit-desc {
  font-size: 0.94rem;
  color: var(--text-body);
  line-height: 1.6;
  margin-bottom: 18px;
  flex-grow: 1;
}

.real-benefit-tag {
  align-self: flex-start;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.78rem;
  font-weight: 700;
  color: var(--primary-blue);
  background: var(--primary-blue-light);
  padding: 5px 12px;
  border-radius: var(--radius-pill);
}

/* ===================================================================
   PRICING SECTION: MIỄN PHÍ 100% CHO SINH VIÊN
   =================================================================== */
.pricing-section {
  background: linear-gradient(180deg, var(--bg-page) 0%, #EFF6FF 100%);
  position: relative;
  overflow: hidden;
}

.pricing-card-spotlight {
  max-width: 840px;
  margin: 0 auto;
  background: #FFFFFF;
  border: 2px solid var(--primary-blue-border);
  border-radius: var(--radius-xl);
  box-shadow: 0 20px 50px -10px rgba(21, 71, 166, 0.16);
  padding: 48px;
  position: relative;
  overflow: hidden;
}

@media (max-width: 640px) {
  .pricing-card-spotlight {
    padding: 28px 20px;
  }
}

.pricing-badge-free {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: linear-gradient(135deg, #10B981 0%, #059669 100%);
  color: #FFFFFF;
  font-size: 0.88rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: 8px 18px;
  border-radius: var(--radius-pill);
  box-shadow: 0 4px 14px rgba(16, 185, 129, 0.3);
  margin-bottom: 20px;
}

.pricing-headline {
  font-size: 2.2rem;
  font-weight: 800;
  color: var(--text-dark);
  margin-bottom: 12px;
}

.pricing-price-row {
  display: flex;
  align-items: baseline;
  gap: 12px;
  margin-bottom: 24px;
}

.price-free-text {
  font-size: 3.5rem;
  font-weight: 900;
  color: var(--primary-blue);
  line-height: 1;
}

.price-sub-label {
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--text-muted);
}

.pricing-desc {
  font-size: 1.05rem;
  color: var(--text-body);
  margin-bottom: 32px;
  line-height: 1.6;
}

.pricing-features-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
  margin-bottom: 36px;
  padding: 24px;
  background: var(--bg-page);
  border-radius: var(--radius-md);
  border: 1px solid #E2E8F0;
}

@media (max-width: 640px) {
  .pricing-features-grid {
    grid-template-columns: 1fr;
    gap: 12px;
    padding: 16px;
  }
}

.pricing-feat-item {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.95rem;
  color: var(--text-dark);
  font-weight: 500;
}

.pricing-feat-check {
  color: #10B981;
  font-weight: 800;
  font-size: 1.1rem;
}

.pricing-cta-row {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
}

/* ===================================================================
   REGISTRATION FORM MODAL (POPUP ĐĂNG KÝ DÙNG THỬ SỚM)
   =================================================================== */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 99999;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition: opacity 0.3s cubic-bezier(0.16, 1, 0.3, 1), visibility 0.3s;
}

.modal-overlay.active {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
}

.modal-backdrop {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: rgba(1, 25, 99, 0.65);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}

.modal-container {
  position: relative;
  width: 100%;
  max-width: 520px;
  background: #FFFFFF;
  border-radius: var(--radius-xl);
  box-shadow: 0 25px 70px -12px rgba(1, 25, 99, 0.35);
  border: 1px solid rgba(21, 71, 166, 0.15);
  padding: 36px 32px;
  transform: translateY(20px) scale(0.96);
  transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  max-height: 90vh;
  overflow-y: auto;
  z-index: 1;
}

@media (max-width: 480px) {
  .modal-container {
    padding: 28px 20px;
  }
}

.modal-overlay.active .modal-container {
  transform: translateY(0) scale(1);
}

.modal-close {
  position: absolute;
  top: 18px;
  right: 18px;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  border: none;
  background: #F1F5F9;
  color: #64748B;
  font-size: 1.4rem;
  line-height: 1;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-fast);
}

.modal-close:hover {
  background: #E2E8F0;
  color: var(--text-dark);
  transform: scale(1.08);
}

.modal-badge {
  display: inline-block;
  font-size: 0.78rem;
  font-weight: 700;
  color: var(--primary-blue);
  background: var(--primary-blue-light);
  padding: 4px 12px;
  border-radius: var(--radius-pill);
  margin-bottom: 12px;
}

.modal-title {
  font-size: 1.6rem;
  color: var(--text-dark);
  font-weight: 800;
  margin-bottom: 8px;
}

.modal-subtitle {
  font-size: 0.95rem;
  color: var(--text-body);
  line-height: 1.5;
  margin-bottom: 24px;
}

.modal-form {
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
  text-align: left;
}

.form-label {
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--text-dark);
}

.required-star {
  color: var(--accent-red);
}

.optional-tag {
  font-size: 0.8rem;
  color: var(--text-muted);
  font-weight: 400;
}

.form-input {
  width: 100%;
  padding: 12px 16px;
  font-size: 0.95rem;
  font-family: inherit;
  color: var(--text-dark);
  background: #F8FAFC;
  border: 1.5px solid #CBD5E1;
  border-radius: var(--radius-sm);
  outline: none;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.form-input:focus {
  border-color: var(--primary-blue);
  background: #FFFFFF;
  box-shadow: 0 0 0 3px rgba(21, 71, 166, 0.15);
}

.btn-submit-lead {
  background: linear-gradient(135deg, #1547A6 0%, #1E5FD8 100%);
  color: #FFFFFF;
  border: none;
  border-radius: var(--radius-pill);
  padding: 14px 28px;
  font-size: 1rem;
  font-weight: 700;
  font-family: inherit;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  box-shadow: 0 8px 20px rgba(21, 71, 166, 0.28);
  transition: all var(--transition-fast);
  margin-top: 8px;
}

.btn-submit-lead:hover {
  background: linear-gradient(135deg, #0D3A8F 0%, #1547A6 100%);
  transform: translateY(-2px);
  box-shadow: 0 12px 28px rgba(21, 71, 166, 0.35);
}

.form-privacy-note {
  font-size: 0.8rem;
  color: var(--text-muted);
  text-align: center;
  margin-top: 4px;
}

/* Modal Success State */
.modal-success-state {
  text-align: center;
  padding: 16px 8px;
}

.success-icon-circle {
  width: 72px;
  height: 72px;
  border-radius: 50%;
  background: linear-gradient(135deg, #ECFDF5 0%, #D1FAE5 100%);
  color: #10B981;
  font-size: 2.2rem;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 18px;
  box-shadow: 0 8px 20px rgba(16, 185, 129, 0.2);
}

.success-title {
  font-size: 1.6rem;
  color: var(--text-dark);
  font-weight: 800;
  margin-bottom: 8px;
}

.success-desc {
  font-size: 0.95rem;
  color: var(--text-body);
  line-height: 1.5;
  margin-bottom: 24px;
}

.success-action-box {
  background: #F8FAFC;
  border: 1px solid #E2E8F0;
  border-radius: var(--radius-md);
  padding: 20px;
  margin-bottom: 20px;
}

.success-hint {
  font-size: 0.9rem;
  color: var(--text-body);
  margin-bottom: 14px;
}

.success-cta-btn {
  width: 100%;
  padding: 14px 24px;
}

.btn-text-close {
  background: transparent;
  border: none;
  color: var(--text-muted);
  font-size: 0.9rem;
  cursor: pointer;
  text-decoration: underline;
  padding: 8px;
}

.btn-text-close:hover {
  color: var(--text-dark);
}

/* Two CTA buttons in Navbar */
.nav-sub-cta {
  padding: 8px 18px;
  font-size: 0.88rem;
  border: 1.5px solid var(--primary-blue-border);
  color: var(--primary-blue);
  background: transparent;
  border-radius: var(--radius-pill);
  font-weight: 600;
  transition: all var(--transition-fast);
}

.nav-sub-cta:hover {
  background: var(--primary-blue-light);
  border-color: var(--primary-blue);
  transform: translateY(-1px);
}

/* Footer Contact Info */
.footer-col-contact .footer-contact-desc {
  font-size: 0.88rem;
  color: #94A3B8;
  margin-bottom: 12px;
  line-height: 1.5;
}

.footer-contact-item {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.92rem;
  color: #CBD5E1;
  margin-bottom: 10px;
}

.footer-contact-link {
  color: #60A5FA;
  font-weight: 600;
  text-decoration: underline;
  transition: color var(--transition-fast);
}

.footer-contact-link:hover {
  color: #93C5FD;
}

.footer-contact-actions {
  display: flex;
  gap: 10px;
  margin-top: 16px;
  flex-wrap: wrap;
}

.btn-footer-cta {
  background: var(--primary-blue);
  color: #FFFFFF;
  border: none;
  padding: 8px 16px;
  border-radius: var(--radius-pill);
  font-size: 0.82rem;
  font-weight: 700;
  cursor: pointer;
}

.btn-footer-cta:hover {
  background: var(--primary-blue-hover);
}

.btn-footer-outline {
  background: transparent;
  color: #FFFFFF;
  border: 1px solid rgba(255, 255, 255, 0.25);
  padding: 8px 16px;
  border-radius: var(--radius-pill);
  font-size: 0.82rem;
  font-weight: 600;
}

.btn-footer-outline:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: #FFFFFF;
}