/* ===================================
   CSS VARIABLES & ROOT CONFIGURATION
   =================================== */
:root {
  /* Colors - Vintage Newspaper Theme */
  --sepia-dark: #3e2723;
  --sepia-light: #f4ecd8;
  --sepia-accent: #d4a373;
  --vintage-red: #8b0000;
  --ink: #1a1a1a;

  /* Typography */
  --font-display: 'Playfair Display', serif;
  --font-body: 'Lora', serif;
  --font-arabic: 'Amiri', serif;
  --font-modern: 'Inter', sans-serif;

  /* Spacing */
  --header-height: 80px;
  --footer-height: auto;

  /* Transitions */
  --transition-fast: 0.2s ease;
  --transition-normal: 0.3s ease;
  --transition-slow: 0.5s ease;
}

/* ===================================
   GLOBAL RESET & BASE STYLES
   =================================== */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: var(--font-body);
  background-color: var(--sepia-light);
  color: var(--sepia-dark);
  min-height: 100vh;
  overflow-x: hidden;
  line-height: 1.6;
}

h1,
h2,
h3,
h4,
h5,
h6 {
  font-family: var(--font-display);
  font-weight: 700;
}

a {
  text-decoration: none;
  color: inherit;
}

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
}

/* ===================================
   TEXTURE OVERLAY
   =================================== */
.texture-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-image: url('https://www.transparenttextures.com/patterns/old-paper.png');
  pointer-events: none;
  z-index: 999;
  opacity: 0.3;
}

/* ===================================
   HEADER & NAVIGATION
   =================================== */
.app-header {
  background: linear-gradient(135deg, #3e2723 0%, #1a1a1a 100%);
  color: white;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
  position: sticky;
  top: 0;
  z-index: 998;
  backdrop-filter: blur(10px);
}

.header-container {
  max-width: 1400px;
  margin: 0 auto;
  padding: 1rem 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo-section {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.osmanlica-logo {
  font-family: var(--font-arabic);
  font-size: 2.5rem;
  opacity: 0.9;
  direction: rtl;
}

.app-title {
  font-size: 2rem;
  letter-spacing: 0.2em;
  font-weight: 900;
}

.nav-controls {
  display: flex;
  gap: 0.75rem;
  margin-left: 1.5rem;
  background: rgba(255, 255, 255, 0.1);
  padding: 0.4rem 0.8rem;
  border-radius: 50px;
  border: 1px solid rgba(255, 255, 255, 0.2);
}

.nav-controls button {
  color: white;
  font-size: 1rem;
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  transition: all 0.3s ease;
  background: rgba(139, 0, 0, 0.3);
}

.nav-controls button:hover {
  background: var(--vintage-red);
  transform: scale(1.1);
  box-shadow: 0 0 10px rgba(139, 0, 0, 0.5);
}

.nav-controls button:active {
  transform: scale(0.95);
}

/* Desktop Navigation */
.desktop-nav {
  display: flex;
  gap: 0.5rem;
}

.nav-link {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 1.25rem;
  border-radius: 8px;
  transition: all var(--transition-normal);
  font-weight: 600;
  font-size: 0.9rem;
  position: relative;
  overflow: hidden;
}

.nav-link::before {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: var(--vintage-red);
  transform: translateX(-100%);
  transition: transform var(--transition-normal);
}

.nav-link:hover::before,
.nav-link.active::before {
  transform: translateX(0);
}

.nav-link:hover {
  background: rgba(255, 255, 255, 0.1);
}

.nav-link.active {
  background: rgba(139, 0, 0, 0.2);
  color: #ffa07a;
}

.nav-link i {
  font-size: 1.1rem;
}

/* Mobile Menu */
.mobile-menu-toggle {
  display: none;
  font-size: 1.5rem;
  color: white;
  padding: 0.5rem;
}

.mobile-nav {
  display: none;
  flex-direction: column;
  padding: 1rem;
  background: rgba(0, 0, 0, 0.3);
  backdrop-filter: blur(10px);
}

.mobile-nav .nav-link {
  justify-content: flex-start;
  width: 100%;
  margin-bottom: 0.5rem;
}

.mobile-nav.active {
  display: flex;
  animation: slideDown 0.3s ease;
}

@keyframes slideDown {
  from {
    opacity: 0;
    transform: translateY(-20px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ===================================
   MAIN CONTENT
   =================================== */
.main-content {
  min-height: calc(100vh - var(--header-height) - 200px);
  max-width: 1400px;
  margin: 0 auto;
  padding: 2rem;
  position: relative;
  z-index: 1;
}

/* ===================================
   HOME PAGE HERO
   =================================== */
.home-hero {
  text-align: center;
  padding: 4rem 2rem;
}

.hero-content .osmanlica-title {
  font-family: var(--font-arabic);
  font-size: 6rem;
  color: var(--vintage-red);
  margin-bottom: 1rem;
  opacity: 0.9;
  animation: fadeInDown 1s ease;
}

.hero-content .main-title {
  font-size: 4rem;
  letter-spacing: 0.3em;
  font-weight: 900;
  text-transform: uppercase;
  margin-bottom: 0.5rem;
  animation: fadeInDown 1.2s ease;
  text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.1);
}

.hero-content .subtitle {
  font-size: 1.5rem;
  font-style: italic;
  color: var(--sepia-dark);
  margin-bottom: 0.5rem;
  animation: fadeInDown 1.4s ease;
}

.hero-content .year {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--vintage-red);
  margin-bottom: 2rem;
  animation: fadeInDown 1.6s ease;
}

.hero-description {
  max-width: 800px;
  margin: 2rem auto;
  padding: 2rem;
  background: rgba(255, 255, 255, 0.6);
  backdrop-filter: blur(10px);
  border-radius: 20px;
  border: 2px solid var(--sepia-accent);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.15);
  animation: fadeIn 2s ease;
}

.hero-description p {
  font-size: 1.1rem;
  line-height: 1.8;
  color: var(--sepia-dark);
}

/* Feature Grid */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 2rem;
  margin-top: 3rem;
  animation: fadeInUp 2.2s ease;
}

.feature-card {
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.9) 0%, rgba(244, 236, 216, 0.9) 100%);
  padding: 2rem;
  border-radius: 20px;
  border: 2px solid var(--sepia-accent);
  text-align: center;
  transition: all var(--transition-normal);
  cursor: pointer;
  position: relative;
  overflow: hidden;
}

.feature-card::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(circle, rgba(139, 0, 0, 0.1) 0%, transparent 70%);
  opacity: 0;
  transition: opacity var(--transition-normal);
}

.feature-card:hover::before {
  opacity: 1;
}

.feature-card:hover {
  transform: translateY(-10px);
  box-shadow: 0 20px 40px rgba(139, 0, 0, 0.3);
  border-color: var(--vintage-red);
}

.feature-card i {
  font-size: 3rem;
  color: var(--vintage-red);
  margin-bottom: 1rem;
  transition: transform var(--transition-normal);
}

.feature-card:hover i {
  transform: scale(1.2) rotate(5deg);
}

.feature-card h3 {
  font-size: 1.5rem;
  margin-bottom: 0.5rem;
  color: var(--sepia-dark);
}

.feature-card p {
  font-size: 0.95rem;
  color: #5a5a5a;
}

/* ===================================
   FOOTER
   =================================== */
.app-footer {
  background: linear-gradient(135deg, #1a1a1a 0%, #3e2723 100%);
  color: white;
  padding: 3rem 2rem 1rem;
  margin-top: 4rem;
  border-top: 4px solid var(--vintage-red);
}

.footer-content {
  max-width: 1400px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 2rem;
  padding-bottom: 2rem;
  border-bottom: 2px solid rgba(255, 255, 255, 0.1);
}

.footer-section h3 {
  font-size: 1.3rem;
  margin-bottom: 0.75rem;
  color: #ffa07a;
}

.footer-section p {
  font-size: 0.95rem;
  line-height: 1.6;
  opacity: 0.9;
}

.footer-section .year {
  color: var(--sepia-accent);
  font-weight: 700;
}

.footer-bottom {
  max-width: 1400px;
  margin: 2rem auto 0;
  text-align: center;
  padding-top: 2rem;
}

.footer-bottom p {
  font-size: 0.9rem;
  opacity: 0.8;
  margin: 0.5rem 0;
}

.footer-bottom .quote {
  font-style: italic;
  font-size: 1rem;
  color: var(--sepia-accent);
}

/* ===================================
   PWA INSTALL BUTTON
   =================================== */
.install-btn {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  background: var(--vintage-red);
  color: white;
  padding: 1rem 1.5rem;
  border-radius: 50px;
  font-weight: 700;
  font-size: 1rem;
  box-shadow: 0 10px 30px rgba(139, 0, 0, 0.4);
  transition: all var(--transition-normal);
  z-index: 1000;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.install-btn:hover {
  transform: scale(1.05);
  box-shadow: 0 15px 40px rgba(139, 0, 0, 0.5);
}

.install-btn i {
  font-size: 1.2rem;
}

/* ===================================
   ANIMATIONS
   =================================== */
@keyframes fadeIn {
  from {
    opacity: 0;
  }

  to {
    opacity: 1;
  }
}

@keyframes fadeInDown {
  from {
    opacity: 0;
    transform: translateY(-30px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ===================================
   RESPONSIVE BREAKPOINTS
   =================================== */
@media (max-width: 1024px) {
  .desktop-nav {
    display: none;
  }

  .mobile-menu-toggle {
    display: block;
  }

  .hero-content .osmanlica-title {
    font-size: 4rem;
  }

  .hero-content .main-title {
    font-size: 2.5rem;
  }
}

@media (max-width: 768px) {
  .header-container {
    padding: 1rem;
  }

  .osmanlica-logo {
    display: none;
  }

  .nav-controls {
    margin-left: 0.5rem;
    padding: 0.2rem 0.4rem;
    gap: 0.4rem;
  }

  .nav-controls button {
    width: 28px;
    height: 28px;
    font-size: 0.8rem;
  }

  .app-title {
    font-size: 1.5rem;
  }

  .hero-content .osmanlica-title {
    font-size: 3rem;
  }

  .hero-content .main-title {
    font-size: 2rem;
    letter-spacing: 0.2em;
  }

  .hero-content .subtitle {
    font-size: 1.2rem;
  }

  .hero-description {
    padding: 1.5rem;
  }

  .feature-grid {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }

  .main-content {
    padding: 1rem;
  }

  .install-btn {
    bottom: 1rem;
    right: 1rem;
    padding: 0.75rem 1rem;
    font-size: 0.9rem;
  }
}

@media (max-width: 480px) {
  .hero-content .osmanlica-title {
    font-size: 2.5rem;
  }

  .hero-content .main-title {
    font-size: 1.5rem;
  }

  .hero-content .subtitle {
    font-size: 1rem;
  }

  .feature-card {
    padding: 1rem;
  }

  .feature-card i {
    font-size: 2rem;
  }
}