/* ============================================
   iGram - Instagram Downloader
   Premium Dark Theme CSS Design System
   ============================================ */

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

/* --- CSS Variables --- */
:root {
  --bg-primary: #0a0a1a;
  --bg-secondary: #0f0f2a;
  --bg-card: rgba(15, 15, 42, 0.7);
  --bg-card-hover: rgba(20, 20, 55, 0.85);
  --bg-input: rgba(20, 20, 50, 0.6);

  --text-primary: #f0f0ff;
  --text-secondary: #a0a0cc;
  --text-muted: #6a6a99;

  --accent-purple: #8b5cf6;
  --accent-violet: #a855f7;
  --accent-pink: #ec4899;
  --accent-blue: #3b82f6;
  --accent-cyan: #06b6d4;

  --gradient-hero: linear-gradient(135deg, #0a0a1a 0%, #1a0a2e 30%, #0a1a3e 60%, #0a0a1a 100%);
  --gradient-btn: linear-gradient(135deg, #8b5cf6, #ec4899);
  --gradient-btn-hover: linear-gradient(135deg, #7c3aed, #db2777);
  --gradient-card-border: linear-gradient(135deg, rgba(139,92,246,0.3), rgba(236,72,153,0.3));
  --gradient-glow: radial-gradient(circle, rgba(139,92,246,0.15) 0%, transparent 70%);

  --glass-bg: rgba(255, 255, 255, 0.03);
  --glass-border: rgba(255, 255, 255, 0.06);
  --glass-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);

  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --radius-full: 9999px;

  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-heading: 'Outfit', 'Inter', sans-serif;

  --transition-fast: 0.15s ease;
  --transition-normal: 0.3s ease;
  --transition-slow: 0.5s ease;
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font-body);
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  min-height: 100vh;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

a {
  color: var(--accent-purple);
  text-decoration: none;
  transition: color var(--transition-fast);
}
a:hover { color: var(--accent-violet); }

img { max-width: 100%; display: block; }
ul { list-style: none; }

/* --- Layout --- */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

.container-narrow {
  max-width: 800px;
  margin: 0 auto;
  padding: 0 24px;
}

/* --- Header / Navbar --- */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  padding: 0 24px;
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  background: rgba(10, 10, 26, 0.85);
  border-bottom: 1px solid var(--glass-border);
  transition: background var(--transition-normal);
}

.navbar-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: 1.4rem;
  color: var(--text-primary);
}

.logo-icon {
  width: 36px;
  height: 36px;
  background: var(--gradient-btn);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 8px;
}

.nav-links a {
  color: var(--text-secondary);
  font-size: 0.9rem;
  font-weight: 500;
  padding: 8px 16px;
  border-radius: var(--radius-full);
  transition: all var(--transition-fast);
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--text-primary);
  background: rgba(139, 92, 246, 0.1);
}

.nav-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--text-primary);
  font-size: 1.5rem;
  cursor: pointer;
}

/* --- Hero Section --- */
.hero {
  position: relative;
  padding: 140px 24px 80px;
  text-align: center;
  overflow: hidden;
  background: var(--gradient-hero);
}

.hero::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 800px;
  height: 800px;
  background: var(--gradient-glow);
  pointer-events: none;
  animation: heroPulse 6s ease-in-out infinite;
}

@keyframes heroPulse {
  0%, 100% { opacity: 0.5; transform: translate(-50%, -50%) scale(1); }
  50% { opacity: 0.8; transform: translate(-50%, -50%) scale(1.15); }
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 18px;
  background: rgba(139, 92, 246, 0.12);
  border: 1px solid rgba(139, 92, 246, 0.25);
  border-radius: var(--radius-full);
  font-size: 0.85rem;
  color: var(--accent-violet);
  margin-bottom: 24px;
  font-weight: 500;
}

.hero h1 {
  font-family: var(--font-heading);
  font-size: clamp(2rem, 5vw, 3.5rem);
  font-weight: 800;
  line-height: 1.15;
  margin-bottom: 16px;
  position: relative;
}

.hero h1 .gradient-text {
  background: var(--gradient-btn);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero p {
  font-size: 1.1rem;
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto 40px;
  line-height: 1.7;
}

/* --- Download Box --- */
.download-box {
  max-width: 680px;
  margin: 0 auto;
  position: relative;
}

.input-wrapper {
  display: flex;
  gap: 0;
  background: var(--bg-input);
  border: 2px solid var(--glass-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: border-color var(--transition-normal), box-shadow var(--transition-normal);
}

.input-wrapper:focus-within {
  border-color: var(--accent-purple);
  box-shadow: 0 0 0 4px rgba(139, 92, 246, 0.15), 0 0 40px rgba(139, 92, 246, 0.1);
}

.input-wrapper input {
  flex: 1;
  padding: 18px 24px;
  background: transparent;
  border: none;
  outline: none;
  color: var(--text-primary);
  font-size: 1rem;
  font-family: var(--font-body);
}

.input-wrapper input::placeholder {
  color: var(--text-muted);
}

.btn-download {
  padding: 18px 32px;
  background: var(--gradient-btn);
  border: none;
  color: white;
  font-family: var(--font-body);
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-fast);
  white-space: nowrap;
  display: flex;
  align-items: center;
  gap: 8px;
}

.btn-download:hover {
  background: var(--gradient-btn-hover);
  transform: scale(1.02);
}

.btn-download:active {
  transform: scale(0.98);
}

.btn-download.loading {
  pointer-events: none;
  opacity: 0.8;
}

.btn-download .spinner {
  display: none;
  width: 20px;
  height: 20px;
  border: 2px solid rgba(255,255,255,0.3);
  border-top-color: white;
  border-radius: 50%;
  animation: spin 0.6s linear infinite;
}

.btn-download.loading .spinner { display: block; }
.btn-download.loading .btn-text { display: none; }

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

.input-hint {
  margin-top: 12px;
  font-size: 0.85rem;
  color: var(--text-muted);
}

/* --- Results Section --- */
.results-container {
  max-width: 680px;
  margin: 24px auto 0;
  display: none;
}

.results-container.visible { display: block; }

.result-card {
  background: var(--bg-card);
  backdrop-filter: blur(10px);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  padding: 20px;
  margin-bottom: 12px;
  display: flex;
  gap: 16px;
  align-items: center;
  transition: all var(--transition-normal);
}

.result-card:hover {
  border-color: rgba(139, 92, 246, 0.3);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(0,0,0,0.3);
}

.result-thumbnail {
  width: 120px;
  height: 120px;
  border-radius: var(--radius-md);
  object-fit: cover;
  flex-shrink: 0;
  background: var(--bg-secondary);
}

.result-info {
  flex: 1;
  min-width: 0;
}

.result-info .type-badge {
  display: inline-block;
  padding: 3px 10px;
  border-radius: var(--radius-full);
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 8px;
}

.type-badge.video { background: rgba(59,130,246,0.15); color: #60a5fa; }
.type-badge.image { background: rgba(34,197,94,0.15); color: #4ade80; }
.type-badge.carousel { background: rgba(245,158,11,0.15); color: #fbbf24; }

.result-info .quality {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-bottom: 12px;
}

.btn-save {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 10px 24px;
  background: var(--gradient-btn);
  border: none;
  border-radius: var(--radius-full);
  color: white;
  font-family: var(--font-body);
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.btn-save:hover {
  transform: translateY(-1px);
  box-shadow: 0 4px 15px rgba(139, 92, 246, 0.3);
}

/* --- Error Message --- */
.error-message {
  display: none;
  max-width: 680px;
  margin: 16px auto 0;
  padding: 14px 20px;
  background: rgba(239, 68, 68, 0.1);
  border: 1px solid rgba(239, 68, 68, 0.25);
  border-radius: var(--radius-md);
  color: #fca5a5;
  font-size: 0.9rem;
  text-align: center;
}

.error-message.visible { display: block; }

/* --- Steps Section --- */
.steps {
  padding: 80px 24px;
  background: var(--bg-secondary);
}

.section-title {
  text-align: center;
  margin-bottom: 48px;
}

.section-title h2 {
  font-family: var(--font-heading);
  font-size: clamp(1.5rem, 3vw, 2.2rem);
  font-weight: 700;
  margin-bottom: 12px;
}

.section-title p {
  color: var(--text-secondary);
  font-size: 1rem;
  max-width: 500px;
  margin: 0 auto;
}

.steps-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  max-width: 900px;
  margin: 0 auto;
}

.step-card {
  text-align: center;
  padding: 32px 24px;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  transition: all var(--transition-normal);
  position: relative;
}

.step-card:hover {
  transform: translateY(-4px);
  border-color: rgba(139, 92, 246, 0.2);
  box-shadow: 0 12px 40px rgba(0,0,0,0.2);
}

.step-number {
  width: 56px;
  height: 56px;
  margin: 0 auto 20px;
  background: var(--gradient-btn);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-heading);
  font-size: 1.4rem;
  font-weight: 700;
  color: white;
}

.step-card h3 {
  font-family: var(--font-heading);
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: 10px;
}

.step-card p {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* --- Features Section --- */
.features {
  padding: 80px 24px;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.feature-card {
  padding: 28px 24px;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  text-align: center;
  transition: all var(--transition-normal);
}

.feature-card:hover {
  transform: translateY(-4px);
  border-color: rgba(139, 92, 246, 0.2);
  box-shadow: 0 12px 40px rgba(0,0,0,0.2);
}

.feature-icon {
  width: 52px;
  height: 52px;
  margin: 0 auto 16px;
  background: rgba(139, 92, 246, 0.1);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
}

.feature-card h3 {
  font-family: var(--font-heading);
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 8px;
}

.feature-card p {
  font-size: 0.85rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* --- Tools Grid --- */
.tools {
  padding: 80px 24px;
  background: var(--bg-secondary);
}

.tools-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.tool-card {
  padding: 28px;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  transition: all var(--transition-normal);
}

.tool-card:hover {
  transform: translateY(-4px);
  border-color: rgba(139, 92, 246, 0.2);
  box-shadow: 0 12px 40px rgba(0,0,0,0.2);
}

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

.tool-card h3 {
  font-family: var(--font-heading);
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: 10px;
}

.tool-card h3 a {
  color: var(--text-primary);
}

.tool-card h3 a:hover {
  color: var(--accent-purple);
}

.tool-card p {
  font-size: 0.88rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* --- FAQ Section --- */
.faq {
  padding: 80px 24px;
}

.faq-list {
  max-width: 750px;
  margin: 0 auto;
}

.faq-item {
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-md);
  margin-bottom: 12px;
  overflow: hidden;
  transition: border-color var(--transition-normal);
}

.faq-item:hover {
  border-color: rgba(139, 92, 246, 0.2);
}

.faq-question {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 24px;
  background: transparent;
  border: none;
  color: var(--text-primary);
  font-family: var(--font-body);
  font-size: 0.95rem;
  font-weight: 500;
  cursor: pointer;
  text-align: left;
  transition: background var(--transition-fast);
}

.faq-question:hover {
  background: rgba(139, 92, 246, 0.05);
}

.faq-question .arrow {
  font-size: 1.2rem;
  transition: transform var(--transition-normal);
  color: var(--text-muted);
  flex-shrink: 0;
  margin-left: 16px;
}

.faq-item.open .faq-question .arrow {
  transform: rotate(180deg);
  color: var(--accent-purple);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height var(--transition-normal), padding var(--transition-normal);
}

.faq-item.open .faq-answer {
  max-height: 500px;
  padding: 0 24px 18px;
}

.faq-answer p {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.7;
}

/* --- Footer --- */
.footer {
  padding: 48px 24px;
  border-top: 1px solid var(--glass-border);
  background: var(--bg-primary);
}

.footer-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
}

.footer-brand .logo { margin-bottom: 12px; }

.footer-brand p {
  font-size: 0.85rem;
  color: var(--text-muted);
  line-height: 1.6;
  max-width: 280px;
}

.footer-col h4 {
  font-family: var(--font-heading);
  font-size: 0.95rem;
  font-weight: 600;
  margin-bottom: 16px;
  color: var(--text-primary);
}

.footer-col a {
  display: block;
  color: var(--text-muted);
  font-size: 0.85rem;
  padding: 4px 0;
  transition: color var(--transition-fast);
}

.footer-col a:hover { color: var(--text-primary); }

.footer-bottom {
  max-width: 1200px;
  margin: 32px auto 0;
  padding-top: 24px;
  border-top: 1px solid var(--glass-border);
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.8rem;
  color: var(--text-muted);
}

/* --- Page Header (subpages) --- */
.page-header {
  padding: 120px 24px 40px;
  text-align: center;
  background: var(--gradient-hero);
  position: relative;
}

.page-header::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 600px;
  height: 600px;
  background: var(--gradient-glow);
  pointer-events: none;
}

.page-header h1 {
  font-family: var(--font-heading);
  font-size: clamp(1.8rem, 4vw, 2.8rem);
  font-weight: 800;
  margin-bottom: 12px;
  position: relative;
}

.page-header p {
  color: var(--text-secondary);
  font-size: 1.05rem;
  max-width: 550px;
  margin: 0 auto;
  position: relative;
}

/* --- Content Sections (legal pages etc) --- */
.content-section {
  padding: 60px 24px;
}

.content-section .container-narrow h2 {
  font-family: var(--font-heading);
  font-size: 1.4rem;
  font-weight: 600;
  margin: 32px 0 12px;
}

.content-section .container-narrow p,
.content-section .container-narrow li {
  font-size: 0.92rem;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 12px;
}

.content-section .container-narrow ul {
  padding-left: 20px;
  list-style: disc;
}

/* --- Breadcrumb --- */
.breadcrumb {
  padding: 0;
  margin-bottom: 20px;
  display: flex;
  gap: 8px;
  font-size: 0.85rem;
  position: relative;
}

.breadcrumb a { color: var(--text-muted); }
.breadcrumb a:hover { color: var(--text-primary); }
.breadcrumb span { color: var(--text-muted); }
.breadcrumb .current { color: var(--text-secondary); }

/* --- Responsive --- */
@media (max-width: 1024px) {
  .features-grid { grid-template-columns: repeat(2, 1fr); }
  .tools-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-inner { grid-template-columns: 1fr 1fr; gap: 32px; }
}

@media (max-width: 768px) {
  .nav-links { display: none; }
  .nav-toggle { display: block; }
  .nav-links.open {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 64px;
    left: 0;
    right: 0;
    background: rgba(10, 10, 26, 0.98);
    padding: 16px;
    border-bottom: 1px solid var(--glass-border);
  }

  .hero { padding: 120px 16px 60px; }
  .hero h1 { font-size: 1.8rem; }

  .input-wrapper {
    flex-direction: column;
  }

  .btn-download {
    justify-content: center;
    padding: 16px;
    border-radius: 0 0 14px 14px;
  }

  .steps-grid { grid-template-columns: 1fr; max-width: 400px; }
  .features-grid { grid-template-columns: 1fr; }
  .tools-grid { grid-template-columns: 1fr; }

  .result-card { flex-direction: column; text-align: center; }
  .result-thumbnail { width: 100%; height: 200px; }

  .footer-inner { grid-template-columns: 1fr; gap: 24px; }
  .footer-bottom { flex-direction: column; gap: 8px; text-align: center; }
}

/* --- Animations --- */
.fade-in {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

/* --- Shimmer Loading --- */
.shimmer {
  background: linear-gradient(90deg, var(--bg-card) 25%, rgba(139,92,246,0.05) 50%, var(--bg-card) 75%);
  background-size: 200% 100%;
  animation: shimmer 1.5s infinite;
  border-radius: var(--radius-md);
}

@keyframes shimmer {
  0% { background-position: -200% 0; }
  100% { background-position: 200% 0; }
}

/* --- Floating Particles --- */
.particles {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  overflow: hidden;
  pointer-events: none;
}

.particle {
  position: absolute;
  width: 4px;
  height: 4px;
  background: rgba(139, 92, 246, 0.3);
  border-radius: 50%;
  animation: float linear infinite;
}

@keyframes float {
  0% { transform: translateY(100vh) scale(0); opacity: 0; }
  10% { opacity: 1; }
  90% { opacity: 1; }
  100% { transform: translateY(-10vh) scale(1); opacity: 0; }
}