/**
 * SPRASH e-Library – Global Stylesheet
 * ========================================
 * Design System & Home Page Styles
 * 
 * Color Palette:
 *   White:       #FFFFFF
 *   Sky Blue:    #87CEEB / #E3F2FD
 *   Deep Blue:   #1565C0 / #0D47A1
 *   Light Green: #E8F5E9 / #66BB6A
 *   Orange:      #FF9800 / #F57C00
 *
 * Typography: Outfit (headings) + Inter (body)
 */

/* ─── Google Fonts Import ──────────────────── */
@import url('https://fonts.googleapis.com/css2?family=Outfit:wght@300;400;500;600;700;800&family=Inter:wght@300;400;500;600;700&display=swap');

/* ─── CSS Custom Properties ────────────────── */
:root {
  /* Primary palette */
  --color-white: #FFFFFF;
  --color-off-white: #F8FAFC;
  --color-sky-blue: #87CEEB;
  --color-sky-blue-light: #E3F2FD;
  --color-deep-blue: #1565C0;
  --color-deep-blue-dark: #0D47A1;
  --color-navy: #0A1628;
  
  /* Accent colors */
  --color-green: #66BB6A;
  --color-green-light: #E8F5E9;
  --color-orange: #FF9800;
  --color-orange-dark: #F57C00;
  --color-orange-light: #FFF3E0;
  
  /* Neutral palette */
  --color-gray-50: #F8FAFC;
  --color-gray-100: #F1F5F9;
  --color-gray-200: #E2E8F0;
  --color-gray-300: #CBD5E1;
  --color-gray-400: #94A3B8;
  --color-gray-500: #64748B;
  --color-gray-600: #475569;
  --color-gray-700: #334155;
  --color-gray-800: #1E293B;
  --color-gray-900: #0F172A;
  
  /* Typography */
  --font-heading: 'Outfit', sans-serif;
  --font-body: 'Inter', sans-serif;
  
  /* Font sizes */
  --text-xs: 0.75rem;
  --text-sm: 0.875rem;
  --text-base: 1rem;
  --text-lg: 1.125rem;
  --text-xl: 1.25rem;
  --text-2xl: 1.5rem;
  --text-3xl: 1.875rem;
  --text-4xl: 2.25rem;
  --text-5xl: 3rem;
  --text-6xl: 3.75rem;
  
  /* Spacing */
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.25rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-20: 5rem;
  --space-24: 6rem;
  
  /* Borders & Radius */
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --radius-full: 9999px;
  
  /* Shadows */
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.06), 0 1px 2px rgba(0, 0, 0, 0.04);
  --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.05), 0 2px 4px rgba(0, 0, 0, 0.04);
  --shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.08), 0 4px 10px rgba(0, 0, 0, 0.04);
  --shadow-xl: 0 20px 40px rgba(0, 0, 0, 0.1), 0 8px 16px rgba(0, 0, 0, 0.06);
  --shadow-card: 0 2px 16px rgba(21, 101, 192, 0.08);
  --shadow-card-hover: 0 8px 30px rgba(21, 101, 192, 0.15);
  
  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-base: 250ms ease;
  --transition-slow: 400ms ease;
  --transition-spring: 300ms cubic-bezier(0.34, 1.56, 0.64, 1);
  
  /* Layout */
  --container-max: 1280px;
  --container-narrow: 960px;
  --navbar-height: 72px;
}

/* ─── Dark Theme ───────────────────────────── */
[data-theme="dark"] {
  /* Primary palette */
  --color-white: #1a1a2e;
  --color-off-white: #16162a;
  --color-sky-blue: #5ba3c9;
  --color-sky-blue-light: rgba(91, 163, 201, 0.12);
  --color-deep-blue: #5c9ce6;
  --color-deep-blue-dark: #4a8ad4;
  --color-navy: #0f0f1e;

  /* Accent colors */
  --color-green: #6ec96e;
  --color-green-light: rgba(110, 201, 110, 0.1);
  --color-orange: #ffb347;
  --color-orange-dark: #f5a030;
  --color-orange-light: rgba(255, 179, 71, 0.1);

  /* Neutral palette */
  --color-gray-50: #1e1e36;
  --color-gray-100: #252542;
  --color-gray-200: #2e2e50;
  --color-gray-300: #3d3d60;
  --color-gray-400: #8888a8;
  --color-gray-500: #a0a0be;
  --color-gray-600: #c0c0d8;
  --color-gray-700: #d4d4e8;
  --color-gray-800: #e8e8f0;
  --color-gray-900: #f5f5fa;

  /* Shadows – softer, using light glow */
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.3), 0 1px 2px rgba(0, 0, 0, 0.2);
  --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.3), 0 2px 4px rgba(0, 0, 0, 0.2);
  --shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.4), 0 4px 10px rgba(0, 0, 0, 0.2);
  --shadow-xl: 0 20px 40px rgba(0, 0, 0, 0.5), 0 8px 16px rgba(0, 0, 0, 0.3);
  --shadow-card: 0 2px 16px rgba(0, 0, 0, 0.25);
  --shadow-card-hover: 0 8px 30px rgba(92, 156, 230, 0.2);
}

/* Dark theme – component overrides that use hardcoded colors */
[data-theme="dark"] .navbar {
  background: rgba(26, 26, 46, 0.95);
  border-bottom-color: rgba(255, 255, 255, 0.06);
}

[data-theme="dark"] .hero {
  background: linear-gradient(135deg, #16162a 0%, #1a1a2e 40%, #1e1e36 100%);
}

[data-theme="dark"] .hero::before {
  background: radial-gradient(circle, rgba(92, 156, 230, 0.08) 0%, transparent 70%);
}

[data-theme="dark"] .hero::after {
  background: radial-gradient(circle, rgba(110, 201, 110, 0.06) 0%, transparent 70%);
}

[data-theme="dark"] .hero__illustration rect[fill="#E3F2FD"] {
  fill: #252542;
}

[data-theme="dark"] .hero__illustration rect[fill="white"] {
  fill: #1e1e36;
}

[data-theme="dark"] .stats {
  background: linear-gradient(135deg, #0f0f1e 0%, #16162a 50%, #1a1a2e 100%);
}

[data-theme="dark"] .cta {
  background: linear-gradient(135deg, rgba(110, 201, 110, 0.08) 0%, rgba(92, 156, 230, 0.08) 100%);
}

[data-theme="dark"] .footer {
  background: #0a0a18;
}

[data-theme="dark"] .page-header {
  background: linear-gradient(135deg, #16162a 0%, #1a1a2e 60%, #1e1e36 100%);
}

[data-theme="dark"] .btn--secondary {
  background: #252542;
  border-color: var(--color-deep-blue);
}

[data-theme="dark"] .section-header__title {
  background: linear-gradient(135deg, #f5f5fa 0%, #5c9ce6 100%);
  -webkit-background-clip: text;
  background-clip: text;
}

[data-theme="dark"] .hero__title-highlight {
  background: linear-gradient(135deg, #5c9ce6 0%, #5ba3c9 100%);
  -webkit-background-clip: text;
  background-clip: text;
}

[data-theme="dark"] .navbar__links {
  background: #1a1a2e;
}

[data-theme="dark"] .about-preview__image rect[fill="#E8F5E9"] {
  fill: #1e1e36;
}

[data-theme="dark"] .about-preview__image rect[fill="white"] {
  fill: #252542;
}

[data-theme="dark"] .modal {
  background: #1e1e36;
}

[data-theme="dark"] .modal__header {
  background: #1e1e36;
  border-bottom-color: #2e2e50;
}

[data-theme="dark"] .modal__footer {
  background: #16162a;
  border-top-color: #2e2e50;
}

[data-theme="dark"] .toast {
  background: #252542;
}

[data-theme="dark"] .form-group input,
[data-theme="dark"] .form-group textarea,
[data-theme="dark"] .form-group select {
  background: #252542;
  border-color: #2e2e50;
  color: #e8e8f0;
}

/* ─── Dark Blue Theme ──────────────────────── */
[data-theme="dark-blue"] {
  /* Primary palette */
  --color-white: #0a1929;
  --color-off-white: #071422;
  --color-sky-blue: #66b2ff;
  --color-sky-blue-light: rgba(102, 178, 255, 0.1);
  --color-deep-blue: #66b2ff;
  --color-deep-blue-dark: #3399ff;
  --color-navy: #001e3c;

  /* Accent colors */
  --color-green: #66bb6a;
  --color-green-light: rgba(102, 187, 106, 0.1);
  --color-orange: #ffb74d;
  --color-orange-dark: #ffa726;
  --color-orange-light: rgba(255, 183, 77, 0.1);

  /* Neutral palette */
  --color-gray-50: #0d2137;
  --color-gray-100: #122a44;
  --color-gray-200: #1a3550;
  --color-gray-300: #254060;
  --color-gray-400: #6e8baa;
  --color-gray-500: #8eaac4;
  --color-gray-600: #b0c8de;
  --color-gray-700: #ccdce8;
  --color-gray-800: #e3ecf4;
  --color-gray-900: #f0f6fc;

  /* Shadows – blue-tinted glow */
  --shadow-sm: 0 1px 3px rgba(0, 10, 30, 0.3), 0 1px 2px rgba(0, 10, 30, 0.2);
  --shadow-md: 0 4px 6px rgba(0, 10, 30, 0.3), 0 2px 4px rgba(0, 10, 30, 0.2);
  --shadow-lg: 0 10px 25px rgba(0, 10, 30, 0.4), 0 4px 10px rgba(0, 10, 30, 0.2);
  --shadow-xl: 0 20px 40px rgba(0, 10, 30, 0.5), 0 8px 16px rgba(0, 10, 30, 0.3);
  --shadow-card: 0 2px 16px rgba(0, 30, 60, 0.3);
  --shadow-card-hover: 0 8px 30px rgba(102, 178, 255, 0.15);
}

/* Dark Blue theme – component overrides */
[data-theme="dark-blue"] .navbar {
  background: rgba(10, 25, 41, 0.95);
  border-bottom-color: rgba(102, 178, 255, 0.08);
}

[data-theme="dark-blue"] .hero {
  background: linear-gradient(135deg, #071422 0%, #0a1929 40%, #0d2137 100%);
}

[data-theme="dark-blue"] .hero::before {
  background: radial-gradient(circle, rgba(102, 178, 255, 0.08) 0%, transparent 70%);
}

[data-theme="dark-blue"] .hero::after {
  background: radial-gradient(circle, rgba(102, 187, 106, 0.06) 0%, transparent 70%);
}

[data-theme="dark-blue"] .hero__illustration rect[fill="#E3F2FD"] {
  fill: #122a44;
}

[data-theme="dark-blue"] .hero__illustration rect[fill="white"] {
  fill: #0d2137;
}

[data-theme="dark-blue"] .stats {
  background: linear-gradient(135deg, #001e3c 0%, #0a1929 50%, #0d2137 100%);
}

[data-theme="dark-blue"] .cta {
  background: linear-gradient(135deg, rgba(102, 187, 106, 0.06) 0%, rgba(102, 178, 255, 0.08) 100%);
}

[data-theme="dark-blue"] .footer {
  background: #001324;
}

[data-theme="dark-blue"] .page-header {
  background: linear-gradient(135deg, #071422 0%, #0a1929 60%, #0d2137 100%);
}

[data-theme="dark-blue"] .btn--secondary {
  background: #122a44;
  border-color: var(--color-deep-blue);
}

[data-theme="dark-blue"] .btn--primary {
  background: linear-gradient(135deg, #3399ff 0%, #1a8cff 100%);
  box-shadow: 0 4px 14px rgba(51, 153, 255, 0.35);
}

[data-theme="dark-blue"] .btn--primary:hover {
  box-shadow: 0 6px 20px rgba(51, 153, 255, 0.5);
}

[data-theme="dark-blue"] .section-header__title {
  background: linear-gradient(135deg, #f0f6fc 0%, #66b2ff 100%);
  -webkit-background-clip: text;
  background-clip: text;
}

[data-theme="dark-blue"] .hero__title-highlight {
  background: linear-gradient(135deg, #66b2ff 0%, #99ccff 100%);
  -webkit-background-clip: text;
  background-clip: text;
}

[data-theme="dark-blue"] .navbar__links {
  background: #0a1929;
}

[data-theme="dark-blue"] .about-preview__image rect[fill="#E8F5E9"] {
  fill: #0d2137;
}

[data-theme="dark-blue"] .about-preview__image rect[fill="white"] {
  fill: #122a44;
}

[data-theme="dark-blue"] .modal {
  background: #0d2137;
}

[data-theme="dark-blue"] .modal__header {
  background: #0d2137;
  border-bottom-color: #1a3550;
}

[data-theme="dark-blue"] .modal__footer {
  background: #071422;
  border-top-color: #1a3550;
}

[data-theme="dark-blue"] .toast {
  background: #122a44;
}

[data-theme="dark-blue"] .form-group input,
[data-theme="dark-blue"] .form-group textarea,
[data-theme="dark-blue"] .form-group select {
  background: #122a44;
  border-color: #1a3550;
  color: #e3ecf4;
}

/* ─── Theme Switcher UI ────────────────────── */
.theme-switcher {
  display: flex;
  align-items: center;
  gap: var(--space-1);
  background: var(--color-gray-100);
  padding: 3px;
  border-radius: var(--radius-full);
  margin-left: var(--space-2);
  margin-right: var(--space-2);
}

.theme-switcher__btn {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-1);
  padding: 6px 12px;
  border-radius: var(--radius-full);
  font-size: var(--text-xs);
  font-weight: 600;
  color: var(--color-gray-500);
  cursor: pointer;
  transition: all var(--transition-base);
  border: 2px solid transparent;
  white-space: nowrap;
  background: transparent;
  line-height: 1;
}

.theme-switcher__btn:hover {
  color: var(--color-gray-800);
  background: var(--color-gray-200);
}

.theme-switcher__btn--active {
  background: var(--color-white);
  color: var(--color-gray-900);
  box-shadow: var(--shadow-sm);
  border-color: var(--color-gray-200);
}

[data-theme="dark"] .theme-switcher__btn--active,
[data-theme="dark-blue"] .theme-switcher__btn--active {
  background: var(--color-gray-200);
  border-color: var(--color-gray-300);
}

.theme-switcher__icon {
  font-size: 14px;
  line-height: 1;
}

/* ─── Smooth Theme Transitions ─────────────── */
body,
.navbar,
.footer,
.book-card,
.hero,
.section,
.about-preview,
.page-header,
.cta,
.stats,
.featured-books,
.modal,
.toast,
.contact-form,
.contact-info__card,
.value-card,
.about-preview__feature,
.form-group input,
.form-group textarea,
.form-group select,
.reader-header,
.reader-sidebar__card,
.pdf-viewer,
.search-section,
.hero__badge,
.hero__float-card {
  transition: background-color 0.35s ease, color 0.35s ease, border-color 0.35s ease, box-shadow 0.35s ease;
}

/* ─── CSS Reset ────────────────────────────── */
*,
*::before,
*::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-body);
  font-size: var(--text-base);
  line-height: 1.6;
  color: var(--color-gray-800);
  background-color: var(--color-white);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 700;
  line-height: 1.2;
  color: var(--color-gray-900);
}

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

img {
  max-width: 100%;
  height: auto;
  display: block;
}

button {
  font-family: var(--font-body);
  cursor: pointer;
  border: none;
  outline: none;
  background: none;
}

input, textarea, select {
  font-family: var(--font-body);
  font-size: var(--text-base);
}

ul, ol {
  list-style: none;
}

/* ─── Utility Classes ──────────────────────── */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--space-6);
}

.container--narrow {
  max-width: var(--container-narrow);
}

.section {
  padding: var(--space-20) 0;
}

.section--alt {
  background-color: var(--color-gray-50);
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* ─── Button Styles ────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-6);
  font-size: var(--text-sm);
  font-weight: 600;
  line-height: 1.5;
  border-radius: var(--radius-full);
  transition: all var(--transition-base);
  white-space: nowrap;
  letter-spacing: 0.01em;
}

.btn:focus-visible {
  outline: 3px solid var(--color-sky-blue);
  outline-offset: 2px;
}

.btn--primary {
  background: linear-gradient(135deg, var(--color-deep-blue) 0%, var(--color-deep-blue-dark) 100%);
  color: var(--color-white);
  box-shadow: 0 4px 14px rgba(21, 101, 192, 0.35);
}

.btn--primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(21, 101, 192, 0.45);
}

.btn--primary:active {
  transform: translateY(0);
}

.btn--secondary {
  background: var(--color-white);
  color: var(--color-deep-blue);
  border: 2px solid var(--color-deep-blue);
}

.btn--secondary:hover {
  background: var(--color-sky-blue-light);
  transform: translateY(-2px);
}

.btn--accent {
  background: linear-gradient(135deg, var(--color-orange) 0%, var(--color-orange-dark) 100%);
  color: var(--color-white);
  box-shadow: 0 4px 14px rgba(255, 152, 0, 0.35);
}

.btn--accent:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(255, 152, 0, 0.45);
}

.btn--lg {
  padding: var(--space-4) var(--space-8);
  font-size: var(--text-base);
}

.btn--sm {
  padding: var(--space-2) var(--space-4);
  font-size: var(--text-xs);
}

.btn--danger {
  background: linear-gradient(135deg, #EF4444, #DC2626);
  color: var(--color-white);
  box-shadow: 0 4px 14px rgba(239, 68, 68, 0.35);
}

.btn--danger:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(239, 68, 68, 0.45);
}

.btn--icon {
  width: 40px;
  height: 40px;
  padding: 0;
  border-radius: var(--radius-md);
}

/* ─── Section Headings ─────────────────────── */
.section-header {
  text-align: center;
  margin-bottom: var(--space-12);
}

.section-header__label {
  display: inline-block;
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-deep-blue);
  background: var(--color-sky-blue-light);
  padding: var(--space-1) var(--space-4);
  border-radius: var(--radius-full);
  margin-bottom: var(--space-4);
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.section-header__title {
  font-size: var(--text-4xl);
  font-weight: 800;
  margin-bottom: var(--space-4);
  background: linear-gradient(135deg, var(--color-gray-900) 0%, var(--color-deep-blue) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.section-header__subtitle {
  font-size: var(--text-lg);
  color: var(--color-gray-500);
  max-width: 600px;
  margin: 0 auto;
  line-height: 1.7;
}

/* ─── Navbar ───────────────────────────────── */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--navbar-height);
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid rgba(0, 0, 0, 0.06);
  z-index: 1000;
  transition: all var(--transition-base);
}

.navbar--scrolled {
  box-shadow: var(--shadow-md);
}

.navbar__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--space-6);
}

.navbar__brand {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.navbar__logo {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-md);
  object-fit: contain;
}

.navbar__logo-img {
  height: 48px;
  width: auto;
  object-fit: contain;
  filter: drop-shadow(0 2px 4px rgba(0,0,0,0.1));
}

.navbar__name {
  font-family: var(--font-heading);
  font-size: var(--text-xl);
  font-weight: 700;
  color: var(--color-deep-blue);
}

.navbar__name span {
  color: var(--color-orange);
}

.navbar__links {
  display: flex;
  align-items: center;
  gap: var(--space-1);
}

.navbar__link {
  padding: var(--space-2) var(--space-4);
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-gray-600);
  border-radius: var(--radius-sm);
  transition: all var(--transition-fast);
}

.navbar__link:hover,
.navbar__link--active {
  color: var(--color-deep-blue);
  background: var(--color-sky-blue-light);
}

.navbar__link--cta {
  background: linear-gradient(135deg, var(--color-deep-blue) 0%, var(--color-deep-blue-dark) 100%);
  color: var(--color-white) !important;
  margin-left: var(--space-2);
}

.navbar__link--cta:hover {
  box-shadow: 0 4px 14px rgba(21, 101, 192, 0.35);
  background: linear-gradient(135deg, var(--color-deep-blue-dark) 0%, var(--color-deep-blue) 100%);
}

/* Mobile menu toggle */
.navbar__toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: var(--space-2);
  cursor: pointer;
}

.navbar__toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--color-gray-700);
  border-radius: 2px;
  transition: all var(--transition-base);
}

.navbar__toggle.active span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

.navbar__toggle.active span:nth-child(2) {
  opacity: 0;
}

.navbar__toggle.active span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

/* ─── Hero Section ─────────────────────────── */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding-top: var(--navbar-height);
  background: linear-gradient(135deg, #E3F2FD 0%, #FFFFFF 40%, #E8F5E9 100%);
  overflow: hidden;
}

/* Decorative background shapes */
.hero::before {
  content: '';
  position: absolute;
  top: -200px;
  right: -150px;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(21, 101, 192, 0.06) 0%, transparent 70%);
  border-radius: 50%;
  animation: float 8s ease-in-out infinite;
}

.hero::after {
  content: '';
  position: absolute;
  bottom: -100px;
  left: -100px;
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, rgba(102, 187, 106, 0.08) 0%, transparent 70%);
  border-radius: 50%;
  animation: float 10s ease-in-out infinite reverse;
}

@keyframes float {
  0%, 100% { transform: translateY(0) scale(1); }
  50% { transform: translateY(-30px) scale(1.05); }
}

.hero__inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-16);
  align-items: center;
  position: relative;
  z-index: 1;
}

.hero__content {
  animation: slideUp 0.8s ease-out;
}

@keyframes slideUp {
  from { opacity: 0; transform: translateY(40px); }
  to { opacity: 1; transform: translateY(0); }
}

.hero__badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  background: var(--color-white);
  border: 1px solid var(--color-gray-200);
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-full);
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-gray-600);
  margin-bottom: var(--space-6);
  box-shadow: var(--shadow-sm);
}

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

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.5; }
}

.hero__title {
  font-size: var(--text-6xl);
  font-weight: 800;
  line-height: 1.1;
  margin-bottom: var(--space-6);
  color: var(--color-gray-900);
}

.hero__title-highlight {
  background: linear-gradient(135deg, var(--color-deep-blue) 0%, var(--color-sky-blue) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero__subtitle {
  font-size: var(--text-xl);
  color: var(--color-gray-500);
  line-height: 1.7;
  margin-bottom: var(--space-8);
  max-width: 520px;
}

.hero__actions {
  display: flex;
  gap: var(--space-4);
  flex-wrap: wrap;
}

.hero__visual {
  position: relative;
  display: flex;
  justify-content: center;
  align-items: center;
  animation: slideUp 0.8s ease-out 0.2s both;
}

.hero__illustration {
  width: 100%;
  max-width: 520px;
  height: auto;
  border-radius: var(--radius-xl);
  filter: drop-shadow(0 20px 40px rgba(0, 0, 0, 0.1));
}

/* Floating decoration cards around hero image */
.hero__float-card {
  position: absolute;
  background: var(--color-white);
  border-radius: var(--radius-lg);
  padding: var(--space-4);
  box-shadow: var(--shadow-lg);
  animation: floatCard 6s ease-in-out infinite;
  z-index: 2;
}

.hero__float-card--1 {
  top: 10%;
  left: -30px;
  animation-delay: 0s;
}

.hero__float-card--2 {
  bottom: 15%;
  right: -20px;
  animation-delay: 2s;
}

@keyframes floatCard {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-12px); }
}

.hero__float-card-icon {
  font-size: var(--text-2xl);
  margin-bottom: var(--space-1);
}

.hero__float-card-text {
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-gray-700);
}

.hero__float-card-sub {
  font-size: var(--text-xs);
  color: var(--color-gray-400);
}

/* ─── About Preview Section ────────────────── */
.about-preview {
  background: var(--color-white);
}

.about-preview__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-16);
  align-items: center;
}

.about-preview__image-wrapper {
  position: relative;
}

.about-preview__image {
  width: 100%;
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-xl);
}

.about-preview__accent {
  position: absolute;
  top: -20px;
  left: -20px;
  width: 100px;
  height: 100px;
  background: linear-gradient(135deg, var(--color-orange-light), var(--color-orange));
  border-radius: var(--radius-xl);
  opacity: 0.3;
  z-index: -1;
}

.about-preview__text h3 {
  font-size: var(--text-3xl);
  margin-bottom: var(--space-6);
}

.about-preview__text p {
  color: var(--color-gray-500);
  line-height: 1.8;
  margin-bottom: var(--space-4);
}

.about-preview__features {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-4);
  margin-top: var(--space-8);
}

.about-preview__feature {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-3) var(--space-4);
  background: var(--color-gray-50);
  border-radius: var(--radius-md);
  transition: all var(--transition-base);
}

.about-preview__feature:hover {
  background: var(--color-sky-blue-light);
  transform: translateX(4px);
}

.about-preview__feature-icon {
  font-size: var(--text-xl);
  flex-shrink: 0;
}

.about-preview__feature-text {
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-gray-700);
}

/* ─── Statistics Section ───────────────────── */
.stats {
  background: linear-gradient(135deg, var(--color-deep-blue-dark) 0%, var(--color-deep-blue) 50%, #1976D2 100%);
  color: var(--color-white);
  position: relative;
  overflow: hidden;
}

.stats::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.03'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
  pointer-events: none;
}

.stats__grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-8);
  position: relative;
  z-index: 1;
}

.stats__item {
  text-align: center;
  padding: var(--space-8);
}

.stats__icon {
  font-size: var(--text-4xl);
  margin-bottom: var(--space-4);
  display: block;
}

.stats__number {
  font-family: var(--font-heading);
  font-size: var(--text-5xl);
  font-weight: 800;
  margin-bottom: var(--space-2);
  background: linear-gradient(135deg, #FFFFFF 0%, rgba(255, 255, 255, 0.8) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.stats__label {
  font-size: var(--text-base);
  opacity: 0.8;
  font-weight: 500;
}

/* ─── Featured Books Section ───────────────── */
.featured-books {
  background: var(--color-gray-50);
}

.featured-books__tabs {
  display: flex;
  justify-content: center;
  gap: var(--space-2);
  margin-bottom: var(--space-10);
}

.featured-books__tab {
  padding: var(--space-3) var(--space-6);
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-gray-500);
  background: var(--color-white);
  border: 2px solid var(--color-gray-200);
  border-radius: var(--radius-full);
  cursor: pointer;
  transition: all var(--transition-base);
}

.featured-books__tab:hover {
  color: var(--color-deep-blue);
  border-color: var(--color-deep-blue);
}

.featured-books__tab--active {
  background: var(--color-deep-blue);
  color: var(--color-white);
  border-color: var(--color-deep-blue);
}

.featured-books__grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: var(--space-6);
}

/* ─── Book Card ────────────────────────────── */
.book-card {
  background: var(--color-white);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-card);
  transition: all var(--transition-base);
  display: flex;
  flex-direction: column;
}

.book-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-card-hover);
}

.book-card__cover {
  position: relative;
  width: 100%;
  height: 200px;
  overflow: hidden;
  background: linear-gradient(135deg, var(--color-sky-blue-light) 0%, var(--color-green-light) 100%);
}

.book-card__cover img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-slow);
}

.book-card:hover .book-card__cover img {
  transform: scale(1.05);
}

.book-card__badge {
  position: absolute;
  top: var(--space-3);
  left: var(--space-3);
  background: var(--color-deep-blue);
  color: var(--color-white);
  font-size: var(--text-xs);
  font-weight: 600;
  padding: var(--space-1) var(--space-3);
  border-radius: var(--radius-full);
}

.book-card__body {
  padding: var(--space-5);
  flex: 1;
  display: flex;
  flex-direction: column;
}

.book-card__subject {
  font-size: var(--text-xs);
  font-weight: 600;
  color: var(--color-orange-dark);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: var(--space-2);
}

.book-card__title {
  font-size: var(--text-lg);
  font-weight: 700;
  margin-bottom: var(--space-2);
  color: var(--color-gray-800);
  line-height: 1.3;
}

.book-card__description {
  font-size: var(--text-sm);
  color: var(--color-gray-500);
  line-height: 1.6;
  margin-bottom: var(--space-4);
  flex: 1;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.book-card__actions {
  display: flex;
  gap: var(--space-2);
  margin-top: auto;
}

.book-card__actions .btn {
  flex: 1;
  font-size: var(--text-xs);
  padding: var(--space-2) var(--space-3);
}

/* ─── CTA Section ──────────────────────────── */
.cta {
  background: linear-gradient(135deg, var(--color-green-light) 0%, var(--color-sky-blue-light) 100%);
  text-align: center;
}

.cta__title {
  font-size: var(--text-4xl);
  font-weight: 800;
  margin-bottom: var(--space-4);
}

.cta__subtitle {
  font-size: var(--text-lg);
  color: var(--color-gray-500);
  margin-bottom: var(--space-8);
  max-width: 500px;
  margin-left: auto;
  margin-right: auto;
}

/* ─── Footer ───────────────────────────────── */
.footer {
  background: var(--color-navy);
  color: rgba(255, 255, 255, 0.7);
  padding: var(--space-16) 0 var(--space-8);
}

.footer__grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: var(--space-10);
  margin-bottom: var(--space-12);
}

.footer__brand {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  margin-bottom: var(--space-4);
}

.footer__logo {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-sm);
}

.footer__logo-img {
  height: 48px;
  width: auto;
  object-fit: contain;
  filter: drop-shadow(0 2px 4px rgba(255,255,255,0.1));
}

.footer__brand-name {
  font-family: var(--font-heading);
  font-size: var(--text-xl);
  font-weight: 700;
  color: var(--color-white);
}

.footer__brand-name span {
  color: var(--color-orange);
}

.footer__desc {
  font-size: var(--text-sm);
  line-height: 1.7;
  max-width: 320px;
}

.footer__heading {
  font-family: var(--font-heading);
  font-size: var(--text-base);
  font-weight: 600;
  color: var(--color-white);
  margin-bottom: var(--space-5);
}

.footer__link {
  display: block;
  font-size: var(--text-sm);
  padding: var(--space-1) 0;
  transition: all var(--transition-fast);
}

.footer__link:hover {
  color: var(--color-sky-blue);
  transform: translateX(4px);
}

.footer__bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding-top: var(--space-8);
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: var(--text-sm);
}

.footer__heart {
  color: #EF4444;
}

/* ─── Loading Spinner ──────────────────────── */
.spinner {
  display: none;
  justify-content: center;
  align-items: center;
  padding: var(--space-16);
}

.spinner--active {
  display: flex;
}

.spinner__circle {
  width: 40px;
  height: 40px;
  border: 4px solid var(--color-gray-200);
  border-top-color: var(--color-deep-blue);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

/* ─── Toast Notifications ──────────────────── */
.toast-container {
  position: fixed;
  top: calc(var(--navbar-height) + var(--space-4));
  right: var(--space-4);
  z-index: 9999;
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.toast {
  background: var(--color-white);
  border-radius: var(--radius-md);
  padding: var(--space-4) var(--space-6);
  box-shadow: var(--shadow-xl);
  display: flex;
  align-items: center;
  gap: var(--space-3);
  animation: slideInRight 0.3s ease-out;
  max-width: 380px;
  border-left: 4px solid var(--color-green);
}

.toast--error {
  border-left-color: #EF4444;
}

.toast--info {
  border-left-color: var(--color-deep-blue);
}

@keyframes slideInRight {
  from { opacity: 0; transform: translateX(100%); }
  to { opacity: 1; transform: translateX(0); }
}

.toast__message {
  font-size: var(--text-sm);
  color: var(--color-gray-700);
}

.toast__close {
  font-size: var(--text-lg);
  color: var(--color-gray-400);
  cursor: pointer;
  padding: var(--space-1);
  transition: color var(--transition-fast);
}

.toast__close:hover {
  color: var(--color-gray-700);
}

/* ─── Empty State ──────────────────────────── */
.empty-state {
  text-align: center;
  padding: var(--space-16) var(--space-8);
}

.empty-state__icon {
  font-size: 4rem;
  margin-bottom: var(--space-4);
}

.empty-state__title {
  font-size: var(--text-xl);
  color: var(--color-gray-700);
  margin-bottom: var(--space-2);
}

.empty-state__text {
  font-size: var(--text-base);
  color: var(--color-gray-400);
}

/* ─── About Page ───────────────────────────── */
.page-header {
  padding-top: calc(var(--navbar-height) + var(--space-16));
  padding-bottom: var(--space-12);
  background: linear-gradient(135deg, var(--color-sky-blue-light) 0%, var(--color-white) 60%, var(--color-green-light) 100%);
  text-align: center;
}

.page-header__title {
  font-size: var(--text-5xl);
  font-weight: 800;
  margin-bottom: var(--space-4);
}

.page-header__subtitle {
  font-size: var(--text-lg);
  color: var(--color-gray-500);
  max-width: 600px;
  margin: 0 auto;
}

/* About content sections */
.about-content {
  padding: var(--space-16) 0;
}

.about-block {
  margin-bottom: var(--space-16);
}

.about-block:last-child {
  margin-bottom: 0;
}

.about-block__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-12);
  align-items: center;
}

.about-block__grid--reverse {
  direction: rtl;
}

.about-block__grid--reverse > * {
  direction: ltr;
}

.about-block__title {
  font-size: var(--text-3xl);
  margin-bottom: var(--space-6);
}

.about-block__text {
  color: var(--color-gray-500);
  line-height: 1.8;
  margin-bottom: var(--space-4);
}

.about-block__image {
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-lg);
  width: 100%;
}

/* Mission & Vision cards */
.values-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-6);
}

.value-card {
  background: var(--color-white);
  border-radius: var(--radius-lg);
  padding: var(--space-8);
  box-shadow: var(--shadow-card);
  transition: all var(--transition-base);
  text-align: center;
  border-top: 4px solid transparent;
}

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

.value-card:nth-child(1) {
  border-top-color: var(--color-deep-blue);
}

.value-card:nth-child(2) {
  border-top-color: var(--color-orange);
}

.value-card:nth-child(3) {
  border-top-color: var(--color-green);
}

.value-card__icon {
  font-size: var(--text-4xl);
  margin-bottom: var(--space-4);
}

.value-card__title {
  font-size: var(--text-xl);
  margin-bottom: var(--space-3);
}

.value-card__text {
  font-size: var(--text-sm);
  color: var(--color-gray-500);
  line-height: 1.7;
}

/* ─── Contact Page ─────────────────────────── */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-12);
}

.contact-form {
  background: var(--color-white);
  border-radius: var(--radius-lg);
  padding: var(--space-10);
  box-shadow: var(--shadow-lg);
}

.form-group {
  margin-bottom: var(--space-5);
}

.form-group label {
  display: block;
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-gray-700);
  margin-bottom: var(--space-2);
}

.form-group input,
.form-group textarea,
.form-group select {
  width: 100%;
  padding: var(--space-3) var(--space-4);
  border: 2px solid var(--color-gray-200);
  border-radius: var(--radius-md);
  font-size: var(--text-base);
  color: var(--color-gray-800);
  background: var(--color-white);
  transition: all var(--transition-fast);
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
  outline: none;
  border-color: var(--color-deep-blue);
  box-shadow: 0 0 0 4px rgba(21, 101, 192, 0.1);
}

.form-group textarea {
  min-height: 150px;
  resize: vertical;
}

.form-group input::placeholder,
.form-group textarea::placeholder {
  color: var(--color-gray-400);
}

.contact-info {
  display: flex;
  flex-direction: column;
  gap: var(--space-6);
}

.contact-info__card {
  display: flex;
  gap: var(--space-4);
  padding: var(--space-6);
  background: var(--color-gray-50);
  border-radius: var(--radius-lg);
  transition: all var(--transition-base);
}

.contact-info__card:hover {
  background: var(--color-sky-blue-light);
  transform: translateX(4px);
}

.contact-info__icon {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-deep-blue);
  color: var(--color-white);
  border-radius: var(--radius-md);
  font-size: var(--text-xl);
  flex-shrink: 0;
}

.contact-info__title {
  font-size: var(--text-base);
  font-weight: 600;
  color: var(--color-gray-800);
  margin-bottom: var(--space-1);
}

.contact-info__text {
  font-size: var(--text-sm);
  color: var(--color-gray-500);
  line-height: 1.6;
}

/* ─── Scroll-to-Top ────────────────────────── */
.scroll-top {
  position: fixed;
  bottom: var(--space-8);
  right: var(--space-8);
  width: 48px;
  height: 48px;
  background: var(--color-deep-blue);
  color: var(--color-white);
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--text-xl);
  box-shadow: var(--shadow-lg);
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transform: translateY(20px);
  transition: all var(--transition-base);
  z-index: 500;
}

.scroll-top--visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.scroll-top:hover {
  background: var(--color-deep-blue-dark);
  transform: translateY(-4px);
}

/* ─── Responsive Design ────────────────────── */
@media (max-width: 1024px) {
  .hero__inner {
    grid-template-columns: 1fr;
    text-align: center;
    gap: var(--space-10);
  }
  
  .hero__subtitle {
    margin: 0 auto var(--space-8);
  }
  
  .hero__actions {
    justify-content: center;
  }
  
  .hero__visual {
    max-width: 400px;
    margin: 0 auto;
  }
  
  .hero__float-card { display: none; }
  
  .about-preview__grid,
  .about-block__grid {
    grid-template-columns: 1fr;
    gap: var(--space-8);
  }
  
  .about-block__grid--reverse {
    direction: ltr;
  }
  
  .footer__grid {
    grid-template-columns: 1fr 1fr;
    gap: var(--space-8);
  }
  
  .stats__grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .values-grid {
    grid-template-columns: 1fr;
  }
  
  .contact-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  :root {
    --text-6xl: 2.5rem;
    --text-5xl: 2rem;
    --text-4xl: 1.75rem;
    --text-3xl: 1.5rem;
  }
  
  .section {
    padding: var(--space-12) 0;
  }
  
  .container {
    padding: 0 var(--space-4);
  }
  
  /* Mobile navbar */
  .navbar__toggle {
    display: flex;
  }
  
  .navbar__links {
    position: fixed;
    top: var(--navbar-height);
    left: 0;
    right: 0;
    background: var(--color-white);
    flex-direction: column;
    padding: var(--space-6);
    gap: var(--space-2);
    border-bottom: 1px solid var(--color-gray-200);
    box-shadow: var(--shadow-lg);
    transform: translateY(-100%);
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-base);
  }
  
  .navbar__links--open {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
  }
  
  .navbar__link {
    width: 100%;
    text-align: center;
    padding: var(--space-3) var(--space-4);
  }
  
  .navbar__link--cta {
    margin-left: 0;
    margin-top: var(--space-2);
  }
  
  .theme-switcher {
    justify-content: center;
    margin: var(--space-2) 0;
    width: 100%;
  }
  
  .footer__grid {
    grid-template-columns: 1fr;
    gap: var(--space-8);
  }
  
  .footer__bottom {
    flex-direction: column;
    gap: var(--space-4);
    text-align: center;
  }
  
  .featured-books__grid {
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  }
  
  .about-preview__features {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 480px) {
  .hero__actions {
    flex-direction: column;
    align-items: center;
  }
  
  .hero__actions .btn {
    width: 100%;
    max-width: 280px;
  }
  
  .stats__grid {
    grid-template-columns: 1fr;
  }
  
  .featured-books__tabs {
    flex-wrap: wrap;
  }
  
  .featured-books__grid {
    grid-template-columns: 1fr;
  }
}

/* ─── Accessibility ────────────────────────── */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  
  html {
    scroll-behavior: auto;
  }
}

/* Focus styles for keyboard navigation */
:focus-visible {
  outline: 3px solid var(--color-deep-blue);
  outline-offset: 2px;
}

/* High contrast mode support */
@media (forced-colors: active) {
  .btn--primary,
  .btn--accent {
    border: 2px solid ButtonText;
  }
}

/* ─── Shared Modal & File Upload Styles ──────── */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.5);
  backdrop-filter: blur(4px);
  z-index: 2000;
  display: none;
  align-items: center;
  justify-content: center;
  padding: var(--space-6);
  animation: fadeIn 0.2s ease-out;
}

.modal-overlay--active {
  display: flex;
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

.modal {
  background: var(--color-white);
  border-radius: var(--radius-xl);
  width: 100%;
  max-width: 600px;
  max-height: 90vh;
  overflow-y: auto;
  box-shadow: var(--shadow-xl);
  animation: modalSlideUp 0.3s ease-out;
}

@keyframes modalSlideUp {
  from { opacity: 0; transform: translateY(30px); }
  to { opacity: 1; transform: translateY(0); }
}

.modal__header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--space-6);
  border-bottom: 1px solid var(--color-gray-100);
  position: sticky;
  top: 0;
  background: var(--color-white);
  border-radius: var(--radius-xl) var(--radius-xl) 0 0;
  z-index: 1;
}

.modal__title {
  font-size: var(--text-xl);
  font-weight: 700;
}

.modal__close {
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--text-xl);
  color: var(--color-gray-400);
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.modal__close:hover {
  background: var(--color-gray-100);
  color: var(--color-gray-700);
}

.modal__body {
  padding: var(--space-6);
}

.modal__footer {
  display: flex;
  justify-content: flex-end;
  gap: var(--space-3);
  padding: var(--space-4) var(--space-6);
  border-top: 1px solid var(--color-gray-100);
  background: var(--color-gray-50);
  border-radius: 0 0 var(--radius-xl) var(--radius-xl);
}

/* File upload area */
.file-upload {
  border: 2px dashed var(--color-gray-300);
  border-radius: var(--radius-md);
  padding: var(--space-6);
  text-align: center;
  cursor: pointer;
  transition: all var(--transition-fast);
  position: relative;
}

.file-upload:hover {
  border-color: var(--color-deep-blue);
  background: var(--color-sky-blue-light);
}

.file-upload--active {
  border-color: var(--color-green);
  background: var(--color-green-light);
}

.file-upload__icon {
  font-size: var(--text-3xl);
  margin-bottom: var(--space-2);
}

.file-upload__text {
  font-size: var(--text-sm);
  color: var(--color-gray-500);
}

.file-upload__text strong {
  color: var(--color-deep-blue);
}

.file-upload__input {
  position: absolute;
  inset: 0;
  opacity: 0;
  cursor: pointer;
}

.file-upload__preview {
  font-size: var(--text-sm);
  color: var(--color-green);
  font-weight: 500;
  margin-top: var(--space-2);
}

/* Form rows for compact layout */
.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-4);
}