/* ============================================
   Speedy SlideShow 25 - Website Styles
   ============================================ */

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

:root {
  --bg-deep: #1e1e2e;
  --bg-card: #282839;
  --bg-card-hover: #313145;
  --blue: #58a6ff;
  --blue-light: #79b8ff;
  --orange: #f5a623;
  --orange-dark: #ff8c00;
  --purple: #b388ff;
  --purple-dark: #9c64f4;
  --pink: #ff6b9d;
  --pink-dark: #e91e8a;
  --text: #e6edf3;
  --text-muted: #8b949e;
  --text-dim: #484f58;
  --border: #21262d;
  --radius: 12px;
  --radius-lg: 20px;
  --shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 80px;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
  background: var(--bg-deep);
  color: var(--text);
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

.container {
  max-width: 1140px;
  margin: 0 auto;
  padding: 0 24px;
}

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

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

a:hover {
  color: var(--blue-light);
}

/* --- Gradient Text --- */
.gradient-text {
  background: linear-gradient(135deg, var(--blue), var(--purple), var(--pink));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* --- Buttons --- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 24px;
  border-radius: var(--radius);
  font-size: 0.95rem;
  font-weight: 600;
  border: none;
  cursor: pointer;
  transition: all var(--transition);
  text-decoration: none;
  white-space: nowrap;
}

.btn-primary {
  background: linear-gradient(135deg, var(--blue), var(--purple-dark));
  color: #fff;
  box-shadow: 0 4px 16px rgba(88, 166, 255, 0.3);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 24px rgba(88, 166, 255, 0.4);
  color: #fff;
}

.btn-ghost {
  background: transparent;
  color: var(--text);
  border: 1px solid var(--border);
}

.btn-ghost:hover {
  background: var(--bg-card);
  border-color: var(--text-muted);
  color: var(--text);
}

.btn-lg {
  padding: 14px 32px;
  font-size: 1.05rem;
}

.btn-xl {
  padding: 18px 40px;
  font-size: 1.1rem;
  border-radius: 16px;
}

.btn-nav {
  padding: 8px 20px;
  font-size: 0.85rem;
}

/* --- Navbar --- */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  padding: 12px 0;
  transition: all var(--transition);
  background: transparent;
}

.navbar.scrolled {
  background: rgba(13, 17, 23, 0.92);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
  padding: 8px 0;
}

.nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 1.1rem;
  color: var(--text);
  text-decoration: none;
}

.nav-logo:hover {
  color: var(--text);
}

.nav-logo-img {
  width: 36px;
  height: 36px;
  border-radius: 8px;
}

.nav-logo .version {
  color: var(--orange);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 32px;
  list-style: none;
}

.nav-links a {
  color: var(--text-muted);
  font-size: 0.9rem;
  font-weight: 500;
  transition: color var(--transition);
}

.nav-links a:hover {
  color: var(--text);
}

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}

.nav-toggle span {
  width: 24px;
  height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: all var(--transition);
}

/* --- Hero --- */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 80px 0 80px;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse at 20% 50%, rgba(88, 166, 255, 0.08) 0%, transparent 60%),
    radial-gradient(ellipse at 80% 20%, rgba(156, 100, 244, 0.08) 0%, transparent 60%),
    radial-gradient(ellipse at 50% 80%, rgba(255, 107, 157, 0.06) 0%, transparent 60%);
  pointer-events: none;
}

.hero-content {
  position: relative;
  z-index: 1;
}

.hero-logo {
  width: 425px;
  height: 425px;
  margin: 0 auto 32px;
  border-radius: 32px;
  animation: float 6s ease-in-out infinite;
  filter: drop-shadow(0 20px 40px rgba(0, 0, 0, 0.4));
}

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

.hero h1 {
  font-size: clamp(2.2rem, 5vw, 3.5rem);
  font-weight: 800;
  line-height: 1.2;
  margin-bottom: 20px;
  letter-spacing: -0.02em;
}

.hero-subtitle {
  font-size: 1.15rem;
  color: var(--text-muted);
  max-width: 560px;
  margin: 0 auto 36px;
  line-height: 1.7;
}

.hero-cta {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 40px;
}

.hero-badges {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 14px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 100px;
  font-size: 0.8rem;
  color: var(--text-muted);
}

.hero-scroll-indicator {
  position: absolute;
  bottom: 32px;
  left: 50%;
  transform: translateX(-50%);
  animation: bounce 2s infinite;
  color: var(--text-dim);
}

@keyframes bounce {
  0%, 20%, 50%, 80%, 100% { transform: translateX(-50%) translateY(0); }
  40% { transform: translateX(-50%) translateY(-8px); }
  60% { transform: translateX(-50%) translateY(-4px); }
}

/* --- Key Messages --- */
.key-messages {
  padding: 80px 0;
  border-top: 1px solid var(--border);
}

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

.message-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 32px 24px;
  transition: all var(--transition);
}

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

.message-icon {
  width: 56px;
  height: 56px;
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
}

.icon-blue {
  background: rgba(88, 166, 255, 0.12);
  color: var(--blue);
}

.icon-orange {
  background: rgba(245, 166, 35, 0.12);
  color: var(--orange);
}

.icon-purple {
  background: rgba(156, 100, 244, 0.12);
  color: var(--purple);
}

.icon-pink {
  background: rgba(255, 107, 157, 0.12);
  color: var(--pink);
}

.message-card h3 {
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: 8px;
}

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

/* --- Section Headers --- */
.section-header {
  text-align: center;
  max-width: 640px;
  margin: 0 auto 64px;
}

.section-header h2 {
  font-size: clamp(1.8rem, 3.5vw, 2.5rem);
  font-weight: 800;
  margin-bottom: 16px;
  letter-spacing: -0.02em;
}

.section-header p {
  font-size: 1.05rem;
  color: var(--text-muted);
  line-height: 1.7;
}

/* --- Video Demo --- */
.video-demo {
  padding: 80px 0;
}

.video-wrapper {
  position: relative;
  width: 100%;
  max-width: 800px;
  margin: 0 auto;
  padding-bottom: 56.25%; /* 16:9 aspect ratio */
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--bg-card);
  border: 1px solid var(--border);
}

.video-wrapper iframe {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  border-radius: var(--radius-lg);
}

/* --- Features --- */
.features {
  padding: 100px 0;
}

.feature-block {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
  margin-bottom: 100px;
}

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

.feature-block--reverse {
  direction: rtl;
}

.feature-block--reverse > * {
  direction: ltr;
}

.feature-screenshot {
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--border);
  background: var(--bg-card);
}

.screenshot-img {
  width: 100%;
  aspect-ratio: 16 / 10;
  object-fit: cover;
  object-position: top;
  display: block;
  border-radius: var(--radius);
  cursor: pointer;
  transition: opacity var(--transition);
}

.screenshot-img:hover {
  opacity: 0.85;
}

/* Lightbox */
.lightbox {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 9999;
  background: rgba(0, 0, 0, 0.9);
  backdrop-filter: blur(8px);
  align-items: center;
  justify-content: center;
  cursor: pointer;
}

.lightbox.open {
  display: flex;
}

.lightbox-img {
  max-width: 90vw;
  max-height: 90vh;
  border-radius: var(--radius);
  box-shadow: 0 16px 64px rgba(0, 0, 0, 0.6);
}

.lightbox-close {
  position: absolute;
  top: 20px;
  right: 28px;
  background: none;
  border: none;
  color: var(--text);
  font-size: 2.5rem;
  cursor: pointer;
  opacity: 0.7;
  transition: opacity var(--transition);
}

.lightbox-close:hover {
  opacity: 1;
}

.screenshot-placeholder {
  aspect-ratio: 16 / 10;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 12px;
  color: var(--text-dim);
}

.screenshot-placeholder svg {
  opacity: 0.4;
}

.screenshot-placeholder span {
  font-size: 0.85rem;
  opacity: 0.5;
}

.feature-label {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--blue);
  margin-bottom: 12px;
  padding: 4px 12px;
  background: rgba(88, 166, 255, 0.1);
  border-radius: 100px;
}

.feature-text h3 {
  font-size: 1.6rem;
  font-weight: 800;
  margin-bottom: 12px;
  letter-spacing: -0.01em;
}

.feature-text > p {
  color: var(--text-muted);
  font-size: 1rem;
  margin-bottom: 24px;
  line-height: 1.7;
}

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

.feature-list li {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.9rem;
  color: var(--text-muted);
}

.feature-list li::before {
  content: '';
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--blue);
  flex-shrink: 0;
}

/* --- Privacy --- */
.privacy {
  padding: 100px 0;
  background:
    radial-gradient(ellipse at 50% 50%, rgba(88, 166, 255, 0.04) 0%, transparent 70%);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.privacy-content {
  text-align: center;
  max-width: 640px;
  margin: 0 auto;
}

.privacy-icon {
  width: 96px;
  height: 96px;
  border-radius: 28px;
  background: linear-gradient(135deg, rgba(88, 166, 255, 0.15), rgba(156, 100, 244, 0.15));
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 32px;
  color: var(--blue);
}

.privacy h2 {
  font-size: clamp(1.8rem, 3.5vw, 2.3rem);
  font-weight: 800;
  margin-bottom: 20px;
  letter-spacing: -0.02em;
}

.privacy p {
  color: var(--text-muted);
  font-size: 1.05rem;
  line-height: 1.7;
  margin-bottom: 40px;
}

.privacy p strong {
  color: var(--text);
}

.privacy-points {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
  max-width: 480px;
  margin: 0 auto;
}

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

.privacy-point svg {
  color: #3fb950;
  flex-shrink: 0;
}

/* --- Download --- */
.download {
  padding: 100px 0;
}

.download-card {
  max-width: 520px;
  margin: 0 auto;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 40px;
  text-align: center;
}

.download-card-header {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 32px;
  text-align: left;
}

.download-logo {
  width: 64px;
  height: 64px;
  border-radius: 16px;
}

.download-card-header h3 {
  font-size: 1.3rem;
  font-weight: 700;
}

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

.download-price {
  margin-bottom: 28px;
}

.price-amount {
  display: block;
  font-size: 2rem;
  font-weight: 800;
  background: linear-gradient(135deg, var(--orange), var(--pink));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 4px;
}

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

.btn-download {
  width: 100%;
  justify-content: center;
  margin-bottom: 32px;
}

.system-req {
  text-align: left;
  padding-top: 24px;
  border-top: 1px solid var(--border);
}

.system-req h4 {
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-muted);
  margin-bottom: 12px;
}

.system-req ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.system-req li {
  font-size: 0.85rem;
  color: var(--text-dim);
  padding-left: 16px;
  position: relative;
}

.system-req li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 9px;
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: var(--text-dim);
}

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

/* --- Pricing --- */
.pricing {
  padding: 100px 0;
  border-top: 1px solid var(--border);
}

.pricing-cards {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  max-width: 700px;
  margin: 0 auto;
}

.pricing-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 40px 32px;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.pricing-card--featured {
  border-color: var(--blue);
  background: var(--bg-card-hover);
}

.pricing-card-title {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 16px;
}

.pricing-card-price {
  font-size: 2rem;
  font-weight: 800;
  margin-bottom: 24px;
}

.pricing-card-period {
  font-size: 0.9rem;
  font-weight: 400;
  color: var(--text-muted);
}

.pricing-card-features {
  list-style: none;
  margin-bottom: 32px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.pricing-card-features li {
  font-size: 0.95rem;
  color: var(--text-muted);
}

@media (max-width: 600px) {
  .pricing-cards {
    grid-template-columns: 1fr;
  }
}

/* --- About --- */
.about {
  padding: 100px 0;
  border-top: 1px solid var(--border);
}

.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: start;
}

.about-text h2 {
  font-size: 2rem;
  font-weight: 800;
  margin-bottom: 16px;
}

.about-text p {
  color: var(--text-muted);
  line-height: 1.7;
  margin-bottom: 16px;
}

.about-text p strong {
  color: var(--text);
}

.about-contact {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 32px;
}

.about-contact h3 {
  font-size: 1.2rem;
  font-weight: 700;
  margin-bottom: 8px;
}

.about-contact p {
  color: var(--text-muted);
  font-size: 0.95rem;
  margin-bottom: 20px;
}

.about-contact .btn {
  width: 100%;
  justify-content: center;
  word-break: break-all;
}

.feedback-form {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.feedback-input {
  width: 100%;
  padding: 12px 16px;
  background: var(--bg-deep);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--text);
  font-family: inherit;
  font-size: 0.95rem;
  transition: border-color 0.2s;
}

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

.feedback-input:focus {
  outline: none;
  border-color: var(--blue);
}

.feedback-textarea {
  min-height: 120px;
  resize: vertical;
}

.feedback-btn {
  align-self: flex-start;
  cursor: pointer;
}

/* --- Footer --- */
.footer {
  padding: 40px 0;
  border-top: 1px solid var(--border);
}

.footer-content {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
}

.footer-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 0.95rem;
}

.footer-logo-img {
  width: 28px;
  height: 28px;
  border-radius: 6px;
}

.footer-copy {
  font-size: 0.8rem;
  color: var(--text-dim);
}

.footer-links {
  display: flex;
  gap: 24px;
}

.footer-links a {
  font-size: 0.85rem;
  color: var(--text-muted);
}

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

/* --- Scroll Animations --- */
.fade-in {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

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

/* --- Responsive --- */
@media (max-width: 900px) {
  .messages-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .feature-block,
  .feature-block--reverse {
    grid-template-columns: 1fr;
    gap: 32px;
    direction: ltr;
  }

  .feature-block--reverse > * {
    direction: ltr;
  }

  .about-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }
}

@media (max-width: 640px) {
  .nav-links {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(13, 17, 23, 0.98);
    backdrop-filter: blur(20px);
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 32px;
    z-index: 999;
  }

  .nav-links.open {
    display: flex;
  }

  .nav-links a {
    font-size: 1.2rem;
  }

  .nav-toggle {
    display: flex;
    z-index: 1001;
  }

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

  .nav-toggle.open span:nth-child(2) {
    opacity: 0;
  }

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

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

  .hero-logo {
    width: 300px;
    height: 300px;
  }

  .hero {
    padding: 100px 0 60px;
  }

  .privacy-points {
    grid-template-columns: 1fr;
  }

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

  .download-card {
    padding: 28px;
  }
}