/* Modern Luxury Dark Theme Design System */
:root {
  --bg-main: #0b0512;
  --bg-card: rgba(25, 14, 38, 0.75);
  --bg-header: rgba(18, 9, 29, 0.9);
  --border-glass: rgba(255, 255, 255, 0.1);
  --accent-magenta: #e040fb;
  --accent-purple: #9c27b0;
  --accent-cyan: #00e5ff;
  --accent-green: #25d366;
  --text-main: #f3f0f8;
  --text-muted: #b3a6c9;
  --font-en: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-ar: 'Tajawal', -apple-system, BlinkMacSystemFont, sans-serif;
  --radius-lg: 20px;
  --radius-md: 12px;
  --shadow-glow: 0 10px 30px rgba(156, 39, 176, 0.25);
  --transition-fast: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

html {
  scroll-behavior: smooth;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: var(--font-en);
  background-color: var(--bg-main);
  color: var(--text-main);
  background-image: 
    radial-gradient(circle at 15% 15%, rgba(156, 39, 176, 0.15) 0%, transparent 40%),
    radial-gradient(circle at 85% 85%, rgba(0, 229, 255, 0.1) 0%, transparent 40%);
  background-attachment: fixed;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  overflow-x: hidden;
}

/* RTL Typography Override */
html[lang="ar"] body {
  font-family: var(--font-ar);
}

/* Header Layout (Single Sleek Row on Desktop) */
.app-header {
  position: sticky;
  top: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 28px;
  background: var(--bg-header);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border-glass);
  gap: 16px;
}

.header-left {
  display: flex;
  align-items: center;
  flex: 1;
}

.header-center {
  display: flex;
  align-items: center;
  justify-content: center;
  flex: 1;
}

.header-right {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  flex: 1;
}

.brand-badge {
  background: linear-gradient(135deg, var(--accent-magenta), var(--accent-purple));
  color: #fff;
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1px;
  padding: 5px 12px;
  border-radius: 20px;
  direction: ltr !important;
  unicode-bidi: isolate;
  white-space: nowrap;
}

.brand-title-pill {
  background: rgba(224, 64, 251, 0.08);
  border: 1px solid rgba(224, 64, 251, 0.3);
  padding: 6px 22px;
  border-radius: 30px;
  box-shadow: 0 0 25px rgba(224, 64, 251, 0.25);
  display: flex;
  align-items: center;
  justify-content: center;
  backdrop-filter: blur(12px);
}

.app-title {
  font-size: 18px;
  font-weight: 800;
  background: linear-gradient(135deg, #ffffff 20%, #e040fb 65%, #00e5ff 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  text-align: center;
  white-space: nowrap;
  letter-spacing: 0.5px;
  filter: drop-shadow(0 2px 10px rgba(224, 64, 251, 0.35));
}

.slide-nav-controls {
  display: flex;
  align-items: center;
  gap: 12px;
  background: rgba(255, 255, 255, 0.06);
  padding: 6px 16px;
  border-radius: 30px;
  border: 1px solid var(--border-glass);
  direction: ltr !important;
}

.nav-btn {
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid var(--border-glass);
  color: var(--text-main);
  font-size: 15px;
  font-weight: bold;
  cursor: pointer;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition-fast);
}

.nav-btn:hover:not(:disabled) {
  background: var(--accent-magenta);
  color: #fff;
  transform: scale(1.08);
}

.nav-btn:disabled {
  opacity: 0.3;
  cursor: not-allowed;
}

.slide-indicator {
  font-size: 13.5px;
  font-weight: 600;
  min-width: 100px;
  text-align: center;
  letter-spacing: 0.5px;
  white-space: nowrap;
}

.lang-toggle-container {
  display: flex;
  background: rgba(0, 0, 0, 0.4);
  padding: 3px;
  border-radius: 10px;
  border: 1px solid var(--border-glass);
}

.lang-btn {
  background: transparent;
  border: none;
  color: var(--text-muted);
  font-weight: 600;
  font-size: 13px;
  padding: 6px 14px;
  border-radius: 8px;
  cursor: pointer;
  transition: var(--transition-fast);
  white-space: nowrap;
}

.lang-btn.active {
  background: linear-gradient(135deg, var(--accent-purple), var(--accent-magenta));
  color: #fff;
  box-shadow: 0 4px 12px rgba(224, 64, 251, 0.3);
}

/* Header Video Quick Button */
.video-header-btn {
  background: rgba(224, 64, 251, 0.12);
  border: 1px solid rgba(224, 64, 251, 0.35);
  color: #fff;
  font-weight: 700;
  font-size: 13px;
  padding: 6px 14px;
  border-radius: 8px;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 6px;
  transition: var(--transition-fast);
  margin-right: 8px;
}

html[dir="rtl"] .video-header-btn {
  margin-right: 0;
  margin-left: 8px;
}

.video-header-btn:hover {
  background: var(--accent-magenta);
  transform: translateY(-2px);
  box-shadow: 0 4px 15px rgba(224, 64, 251, 0.4);
}

/* Top Header Video Hero Banner */
.header-video-hero {
  width: 100%;
  max-width: 1350px;
  margin: 24px auto 0 auto;
  padding: 0 24px;
}

.header-video-inner {
  background: rgba(25, 14, 38, 0.85);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-lg);
  padding: 10px;
  backdrop-filter: blur(20px);
  box-shadow: 0 15px 40px rgba(0, 0, 0, 0.6), 0 0 30px rgba(224, 64, 251, 0.15);
  display: flex;
  flex-direction: column;
  align-items: center;
  width: 100%;
}

.header-video-player-frame {
  width: 100%;
  max-width: 100%;
  border-radius: 16px;
  overflow: hidden;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.8);
  border: 2px solid rgba(224, 64, 251, 0.35);
  background: #000;
}

.header-spa-video {
  width: 100%;
  max-height: 680px;
  display: block;
  object-fit: cover;
}

/* Progress Bar */
.progress-bar-container {
  position: sticky;
  top: 57px;
  z-index: 99;
  width: 100%;
  height: 4px;
  background: rgba(255, 255, 255, 0.05);
}

.progress-bar {
  height: 100%;
  background: linear-gradient(90deg, var(--accent-purple), var(--accent-cyan));
  transition: width 0.15s ease-out;
}

/* Main Container (Continuous Vertical Scroll Layout) */
.presentation-container {
  flex: 1;
  max-width: 1350px;
  width: 100%;
  margin: 0 auto;
  padding: 30px 24px 80px 24px;
  display: flex;
  flex-direction: column;
  gap: 48px;
}

/* Continuous Visible Slides */
.slide {
  display: block !important;
  opacity: 1 !important;
  transform: none !important;
  background: var(--bg-card);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-lg);
  padding: 40px;
  backdrop-filter: blur(20px);
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.5);
  scroll-margin-top: 85px; /* Offset for fixed sticky header */
}

.slide-header-group {
  margin-bottom: 24px;
  border-bottom: 1px solid var(--border-glass);
  padding-bottom: 14px;
}

.slide-header-group h1 {
  font-size: 26px;
  font-weight: 800;
  background: linear-gradient(135deg, #ffffff 40%, var(--accent-magenta));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

/* ==========================================================================
   AUTOMATED ALTERNATING (ZIG-ZAG) SLIDE LAYOUT
   ========================================================================== */

.slide-body {
  display: flex;
  align-items: flex-start;
  gap: 36px;
}

.slide-body .description {
  flex: 1;
  min-width: 0;
}

.slide-body .image-placeholder {
  width: 420px;
  flex-shrink: 0;
}

/* LTR (English) Alternating Layout:
   - Odd Slides (1, 3, 5, 7, ...): Text LEFT, Image RIGHT
   - Even Slides (2, 4, 6, 8, ...): Image LEFT, Text RIGHT
*/
html[dir="ltr"] .slide:nth-of-type(odd) .slide-body {
  flex-direction: row;
}

html[dir="ltr"] .slide:nth-of-type(even) .slide-body {
  flex-direction: row-reverse;
}

/* RTL (Arabic) Alternating Layout:
   - Odd Slides (1, 3, 5, 7, ...): Text RIGHT (Natural RTL), Image LEFT
   - Even Slides (2, 4, 6, 8, ...): Image RIGHT, Text LEFT
*/
html[dir="rtl"] .slide:nth-of-type(odd) .slide-body {
  flex-direction: row;
}

html[dir="rtl"] .slide:nth-of-type(even) .slide-body {
  flex-direction: row-reverse;
}

/* Slide 13 Full-Width Override */
#slide-13 .slide-body {
  display: block !important;
}

#slide-13 .description {
  width: 100% !important;
}

/* Description Content Styling */
.description {
  font-size: 15px;
  line-height: 1.7;
  color: var(--text-muted);
}

.description p {
  margin-bottom: 20px;
  font-size: 15.5px;
  color: #e2d9f3;
}

.description h2 {
  font-size: 17px;
  font-weight: 700;
  color: #fff;
  margin: 20px 0 10px 0;
  display: flex;
  align-items: center;
  gap: 8px;
}

.description h2::before {
  content: '';
  display: inline-block;
  width: 4px;
  height: 16px;
  background: var(--accent-magenta);
  border-radius: 2px;
}

.description ul {
  list-style: none;
  margin-bottom: 20px;
}

.description ul li {
  position: relative;
  padding-left: 24px;
  margin-bottom: 10px;
  color: #d1c4e9;
}

html[dir="rtl"] .description ul li {
  padding-left: 0;
  padding-right: 24px;
}

.description ul li::before {
  content: '✦';
  position: absolute;
  left: 0;
  color: var(--accent-magenta);
  font-size: 12px;
}

html[dir="rtl"] .description ul li::before {
  left: auto;
  right: 0;
}

/* AI Video Prompt Styling */
.video-prompt-box {
  background: rgba(224, 64, 251, 0.06);
  border: 1px solid rgba(224, 64, 251, 0.25);
  border-radius: 16px;
  padding: 20px;
  margin-top: 14px;
}

.video-prompt-box p {
  margin-bottom: 10px;
  font-size: 14.5px;
  color: #f3f0f8;
}

.prompt-text-block {
  background: rgba(0, 0, 0, 0.35);
  border: 1px solid var(--border-glass);
  border-radius: 12px;
  padding: 16px;
  margin-top: 12px;
  font-family: var(--font-en);
  font-size: 13.5px;
  line-height: 1.65;
  color: #d1c4e9;
}

.prompt-text-block p {
  margin-bottom: 12px;
  color: #e2d9f3;
}

.prompt-text-block em {
  color: var(--accent-magenta);
  font-style: normal;
  font-weight: 600;
}

/* LANGUAGE VISIBILITY TOGGLES */
html[lang="en"] .lang-ar,
html[lang="en"] .title-ar,
html[lang="en"] .card-title-ar,
html[lang="en"] .app-title-ar {
  display: none !important;
}

html[lang="ar"] .lang-en,
html[lang="ar"] .title-en,
html[lang="ar"] .card-title-en,
html[lang="ar"] .app-title-en {
  display: none !important;
}

/* Phone Screenshot Mockup Frame */
.image-placeholder {
  display: flex;
  justify-content: center;
  align-items: center;
  width: 100%;
}

/* Video Showcase Styling (Slide 1) */
.video-showcase-wrapper {
  display: flex;
  flex-direction: column;
  gap: 24px;
  width: 100%;
  max-width: 420px;
  align-items: center;
}

.video-card {
  width: 100%;
  background: rgba(25, 14, 38, 0.9);
  border: 1px solid var(--border-glass);
  border-radius: 20px;
  padding: 12px;
  box-shadow: var(--shadow-glow), 0 15px 35px rgba(0, 0, 0, 0.8);
  display: flex;
  flex-direction: column;
  gap: 10px;
  position: relative;
  transition: transform 0.3s ease;
}

.video-card:hover {
  transform: translateY(-4px);
  border-color: var(--accent-magenta);
}

.video-badge {
  font-size: 11px;
  font-weight: 700;
  color: var(--accent-cyan);
  text-transform: uppercase;
  letter-spacing: 0.8px;
  padding: 4px 10px;
  background: rgba(0, 229, 255, 0.1);
  border-radius: 12px;
  width: fit-content;
  border: 1px solid rgba(0, 229, 255, 0.2);
}

.spa-video-player {
  width: 100%;
  height: auto;
  border-radius: 14px;
  display: block;
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.6);
  border: 1px solid rgba(255, 255, 255, 0.08);
}

.device-mockup {
  position: relative;
  width: 340px;
  max-width: 100%;
  border-radius: 40px;
  padding: 10px;
  background: #1e152a;
  border: 4px solid #38244f;
  box-shadow: var(--shadow-glow), 0 15px 35px rgba(0, 0, 0, 0.8);
  transition: transform 0.3s ease;
}

.device-mockup:hover {
  transform: translateY(-5px);
}

.notch {
  position: absolute;
  top: 16px;
  left: 50%;
  transform: translateX(-50%);
  width: 90px;
  height: 16px;
  background: #0b0512;
  border-radius: 10px;
  z-index: 10;
}

.screenshot-img {
  width: 100%;
  height: auto;
  display: block;
  border-radius: 30px;
}

/* Workflow Grid Styling (Slide 12) */
.workflow-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 14px;
  width: 100%;
}

.workflow-card {
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border-glass);
  padding: 16px;
  border-radius: 14px;
  display: flex;
  flex-direction: column;
  gap: 6px;
  transition: var(--transition-fast);
}

.workflow-card:hover {
  background: rgba(224, 64, 251, 0.1);
  border-color: var(--accent-magenta);
}

.step-num {
  font-size: 22px;
  font-weight: 800;
  color: var(--accent-cyan);
}

.workflow-card strong {
  font-size: 14px;
  color: #fff;
}

.phone-num {
  direction: ltr !important;
  unicode-bidi: isolate !important;
  display: inline-block;
}

/* MINIMALIST CLEAN STICKY FOOTER */
.app-footer {
  position: sticky;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 90;
  background: var(--bg-header);
  backdrop-filter: blur(16px);
  border-top: 1px solid var(--border-glass);
  padding: 10px 20px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  align-items: center;
}

.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  max-width: 1300px;
  gap: 16px;
}

.footer-btn {
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid var(--border-glass);
  color: #fff;
  padding: 8px 18px;
  border-radius: 20px;
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition-fast);
  white-space: nowrap;
}

.footer-btn:hover {
  background: var(--accent-magenta);
}

.copyright-row {
  font-size: 12px;
  color: var(--text-muted);
  text-align: center;
  direction: ltr !important;
  unicode-bidi: isolate !important;
}

/* Slide Drawer */
.slide-drawer {
  width: 100%;
  max-width: 1200px;
  margin-top: 8px;
  max-height: 200px;
  overflow-y: auto;
  transition: all 0.3s ease;
}

.slide-drawer.hidden, .hidden {
  display: none !important;
}

.drawer-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
  gap: 8px;
  padding: 8px 0;
}

.drawer-item {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border-glass);
  color: var(--text-muted);
  padding: 8px 12px;
  border-radius: 8px;
  font-size: 12px;
  font-weight: 600;
  cursor: pointer;
  text-align: left;
  transition: var(--transition-fast);
}

html[dir="rtl"] .drawer-item {
  text-align: right;
}

.drawer-item:hover, .drawer-item.active {
  background: var(--accent-purple);
  color: #fff;
  border-color: var(--accent-magenta);
}

/* ==========================================================================
   RESPONSIVE LAYOUT (DESKTOP, TABLETS & MOBILE PHONES)
   ========================================================================== */

/* Tablets & Laptops (<= 1024px) */
@media (max-width: 1024px) {
  .slide-body,
  html[dir="ltr"] .slide:nth-of-type(odd) .slide-body,
  html[dir="ltr"] .slide:nth-of-type(even) .slide-body,
  html[dir="rtl"] .slide:nth-of-type(odd) .slide-body,
  html[dir="rtl"] .slide:nth-of-type(even) .slide-body {
    flex-direction: column;
    gap: 24px;
  }
  
  .image-placeholder {
    order: -1;
    width: 100% !important;
  }
  
  .device-mockup {
    width: 290px;
  }

  .presentation-container {
    padding: 16px 14px 70px 14px;
    gap: 36px;
  }

  .slide {
    padding: 24px 18px;
  }
}

/* Mobile & Small Screen Wrappers (<= 850px) */
@media (max-width: 850px) {
  .app-header {
    flex-wrap: wrap;
    gap: 10px;
    padding: 10px 16px;
    justify-content: center;
  }

  .header-left, .header-center, .header-right {
    flex: none;
    width: auto;
    justify-content: center;
  }

  .brand {
    justify-content: center;
    text-align: center;
  }

  .app-title {
    font-size: 15px;
  }

  .footer-inner {
    justify-content: center;
    gap: 10px;
  }
}

/* Mobile Phones (<= 600px) */
@media (max-width: 600px) {
  .app-header {
    padding: 8px 10px;
    gap: 8px;
  }

  .brand-badge {
    font-size: 10px;
    padding: 3px 8px;
  }

  .app-title {
    font-size: 13.5px;
  }

  .presentation-container {
    padding: 12px 8px 70px 8px;
    gap: 28px;
  }

  .slide {
    padding: 18px 12px;
    border-radius: 14px;
  }

  .slide-header-group {
    margin-bottom: 16px;
    padding-bottom: 10px;
  }

  .slide-header-group h1 {
    font-size: 18px;
  }

  .description p {
    font-size: 13.5px;
    line-height: 1.55;
    margin-bottom: 14px;
  }

  .description h2 {
    font-size: 15px;
    margin: 14px 0 8px 0;
  }

  .description ul li {
    font-size: 13px;
  }

  .device-mockup {
    width: 250px;
    border-radius: 28px;
    padding: 6px;
    border-width: 3px;
  }

  .notch {
    width: 75px;
    height: 12px;
    top: 10px;
  }

  .screenshot-img {
    border-radius: 20px;
  }

  .workflow-grid {
    grid-template-columns: 1fr;
  }

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

  .slide-nav-controls {
    padding: 4px 10px;
    gap: 6px;
  }

  .nav-btn {
    width: 30px;
    height: 30px;
    font-size: 13px;
  }

  .slide-indicator {
    font-size: 11.5px;
    min-width: 85px;
  }

  .lang-btn {
    padding: 4px 8px;
    font-size: 11.5px;
  }

  /* Mobile Video Responsiveness */
  .header-video-hero {
    padding: 0 6px;
    margin-top: 10px;
  }

  .header-video-inner {
    padding: 4px;
    border-radius: 12px;
    border-width: 1px;
  }

  .header-video-player-frame {
    border-radius: 10px;
    border-width: 1.5px;
  }

  .header-spa-video {
    aspect-ratio: 16 / 9;
    width: 100%;
    height: auto;
    max-height: 250px;
    object-fit: cover;
  }
}