/* S2S Website - Black & White Tech Magazine Aesthetic */

/* CSS Variables */
:root {
  --color-black: #000000;
  --color-white: #ffffff;
  --color-gray-950: #0a0a0a;
  --color-gray-900: #141414;
  --color-gray-800: #1f1f1f;
  --color-gray-700: #2a2a2a;
  --color-gray-600: #404040;
  --color-gray-500: #666666;
  --color-gray-400: #999999;
  --color-gray-300: #cccccc;
  --color-gray-200: #e5e5e5;
  --color-gray-100: #f5f5f5;
  
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
  --font-mono: 'JetBrains Mono', 'SF Mono', Monaco, 'Cascadia Code', 'Roboto Mono', monospace;
  
  --transition-base: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Animation Keyframes */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

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

@keyframes slideInLeft {
  from {
    opacity: 0;
    transform: translateX(-30px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

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

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

@keyframes typewriter {
  from {
    width: 0;
  }
  to {
    width: 100%;
  }
}

@keyframes blink {
  0%, 49% {
    opacity: 1;
  }
  50%, 100% {
    opacity: 0;
  }
}

@keyframes countUp {
  from {
    opacity: 0;
    transform: translateY(10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes float {
  0%, 100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(-10px);
  }
}

/* Animation Classes */
.animate-fadeInUp {
  animation: fadeInUp 0.8s cubic-bezier(0.4, 0, 0.2, 1) forwards;
}

.animate-slideInLeft {
  animation: slideInLeft 0.8s cubic-bezier(0.4, 0, 0.2, 1) forwards;
}

.animate-slideInRight {
  animation: slideInRight 0.8s cubic-bezier(0.4, 0, 0.2, 1) forwards;
}

.animate-delayed {
  animation-delay: 0.2s;
}

.animate-delayed-2 {
  animation-delay: 0.4s;
}

.animate-delayed-3 {
  animation-delay: 0.6s;
}

/* Scroll Animation Helper */
.scroll-animate {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.8s cubic-bezier(0.4, 0, 0.2, 1), 
              transform 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}

.scroll-animate.in-view {
  opacity: 1;
  transform: translateY(0);
}

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

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.6;
  color: var(--color-gray-100);
  background: var(--color-black);
  overflow-x: hidden;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.02em;
}

h1 { font-size: clamp(2.5rem, 5vw, 4rem); }
h2 { font-size: clamp(2rem, 4vw, 3rem); }
h3 { font-size: clamp(1.25rem, 2.5vw, 1.5rem); }

p {
  color: var(--color-gray-400);
  max-width: 65ch;
  margin-left: auto;
  margin-right: auto;
}

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

/* Navigation */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(0, 0, 0, 0.8);
  backdrop-filter: saturate(180%) blur(20px);
  border-bottom: 1px solid var(--color-gray-900);
}

.nav-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 1rem 2rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-weight: 700;
  font-size: 1.25rem;
  letter-spacing: -0.01em;
}

.nav-logo svg {
  width: 32px;
  height: 32px;
}

.nav-menu {
  display: flex;
  list-style: none;
  gap: 2rem;
}

.nav-menu a {
  color: var(--color-gray-400);
  font-weight: 500;
  position: relative;
}

.nav-menu a:hover {
  color: var(--color-white);
}

.nav-menu a::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 1px;
  background: var(--color-white);
  transition: var(--transition-base);
}

.nav-menu a:hover::after {
  width: 100%;
}

/* Hero Section */
.hero {
  min-height: 100vh;
  padding: 8rem 2rem 4rem;
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 100%;
  background: radial-gradient(circle at 30% 50%, rgba(255,255,255,0.03) 0%, transparent 50%);
  pointer-events: none;
}

.hero-container {
  max-width: 1200px;
  margin: 0 auto;
  width: 100%;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
}

.hero-badge {
  display: inline-block;
  padding: 0.25rem 0.75rem;
  background: var(--color-gray-900);
  border: 1px solid var(--color-gray-800);
  border-radius: 9999px;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-gray-400);
  margin-bottom: 1.5rem;
  opacity: 0;
  animation: fadeInUp 0.8s cubic-bezier(0.4, 0, 0.2, 1) 0.2s forwards;
}

.hero-title {
  margin-bottom: 1.5rem;
  opacity: 0;
  animation: fadeInUp 0.8s cubic-bezier(0.4, 0, 0.2, 1) 0.4s forwards;
}

.hero-gradient {
  background: linear-gradient(135deg, var(--color-white) 0%, var(--color-gray-400) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-description {
  font-size: 1.25rem;
  line-height: 1.8;
  margin: 0 0 2rem 0;
  text-align: left;
  max-width: 800px;
  opacity: 0;
  animation: fadeInUp 0.8s cubic-bezier(0.4, 0, 0.2, 1) 0.6s forwards;
}

.hero-actions {
  display: flex;
  gap: 1rem;
  margin-bottom: 3rem;
  opacity: 0;
  animation: fadeInUp 0.8s cubic-bezier(0.4, 0, 0.2, 1) 0.8s forwards;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 1.5rem;
  border-radius: 0.5rem;
  font-weight: 600;
  font-size: 1rem;
  transition: var(--transition-base);
  cursor: pointer;
  border: none;
  outline: none;
}

.btn-primary {
  background: var(--color-white);
  color: var(--color-black);
}

.btn-primary:hover {
  background: var(--color-gray-200);
  transform: translateY(-2px);
}

.btn-secondary {
  background: transparent;
  color: var(--color-white);
  border: 1px solid var(--color-gray-700);
}

.btn-secondary:hover {
  background: var(--color-gray-900);
  border-color: var(--color-gray-600);
}

.btn-large {
  padding: 1rem 2rem;
  font-size: 1.125rem;
}

.btn-icon {
  width: 20px;
  height: 20px;
}

/* Hero Stats */
.hero-stats {
  display: flex;
  gap: 3rem;
  opacity: 0;
  animation: fadeInUp 0.8s cubic-bezier(0.4, 0, 0.2, 1) 1s forwards;
}

.stat {
  text-align: left;
}

.stat-value {
  font-size: 2rem;
  font-weight: 700;
  color: var(--color-white);
  line-height: 1;
  margin-bottom: 0.25rem;
}

.stat-label {
  font-size: 0.875rem;
  color: var(--color-gray-500);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

/* Terminal Visual */
.terminal {
  background: var(--color-gray-950);
  border: 1px solid var(--color-gray-800);
  border-radius: 0.75rem;
  overflow: hidden;
  box-shadow: 0 20px 40px rgba(0,0,0,0.5);
  opacity: 0;
  animation: slideInRight 1s cubic-bezier(0.4, 0, 0.2, 1) 0.5s forwards;
}

.terminal-header {
  background: var(--color-gray-900);
  padding: 0.75rem 1rem;
  display: flex;
  align-items: center;
  gap: 1rem;
  border-bottom: 1px solid var(--color-gray-800);
}

.terminal-buttons {
  display: flex;
  gap: 0.5rem;
}

.terminal-buttons span {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--color-gray-700);
}

.terminal-buttons span:nth-child(1) { background: #ff5f57; }
.terminal-buttons span:nth-child(2) { background: #ffbd2e; }
.terminal-buttons span:nth-child(3) { background: #28ca42; }

.terminal-title {
  font-size: 0.875rem;
  color: var(--color-gray-500);
  font-family: var(--font-mono);
}

.terminal-body {
  padding: 1.5rem;
  font-family: var(--font-mono);
  font-size: 0.875rem;
  line-height: 1.6;
}

.terminal-line {
  margin-bottom: 0.5rem;
  color: var(--color-gray-300);
}

.terminal-prompt {
  color: var(--color-gray-500);
}

.terminal-success {
  color: #28ca42;
}

.terminal-dim {
  color: var(--color-gray-600);
  font-size: 0.8rem;
}

.terminal-label {
  color: var(--color-gray-500);
  font-size: 0.75rem;
}

.terminal-spacer {
  height: 1rem;
}

.terminal-cursor {
  animation: blink 1s infinite;
}

@keyframes blink {
  0%, 50% { opacity: 1; }
  51%, 100% { opacity: 0; }
}

/* Features Section */
.features {
  padding: 6rem 2rem;
  background: var(--color-gray-950);
  border-top: 1px solid var(--color-gray-900);
}

.features-container {
  max-width: 1200px;
  margin: 0 auto;
}

.section-header {
  text-align: center;
  margin-bottom: 4rem;
}

.section-title {
  margin-bottom: 1rem;
  color: var(--color-white);
}

.section-description {
  font-size: 1.125rem;
  color: var(--color-gray-500);
  text-align: center !important;
  line-height: 1.6;
  margin: 0.5rem auto 0;
  max-width: 100%;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
}

.feature-card {
  background: var(--color-gray-900);
  border: 1px solid var(--color-gray-800);
  border-radius: 0.75rem;
  padding: 2rem;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  position: relative;
  overflow: hidden;
}

.feature-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(135deg, transparent, rgba(255,255,255,0.03));
  opacity: 0;
  transition: opacity 0.3s ease;
  pointer-events: none;
}

.feature-card:hover {
  transform: translateY(-8px) scale(1.02);
  border-color: var(--color-gray-600);
  background: var(--color-gray-800);
  box-shadow: 0 20px 40px rgba(255,255,255,0.05);
}

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

.feature-icon {
  width: 48px;
  height: 48px;
  background: var(--color-gray-800);
  border-radius: 0.5rem;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.5rem;
  color: var(--color-white);
}

.feature-title {
  margin-bottom: 0.75rem;
  color: var(--color-white);
  font-size: 1.25rem;
}

.feature-description {
  color: var(--color-gray-400);
  line-height: 1.7;
  text-align: left;
}

/* How It Works Section */
.how-it-works {
  padding: 6rem 2rem;
  background: var(--color-black);
  border-top: 1px solid var(--color-gray-900);
}

.how-container {
  max-width: 1200px;
  margin: 0 auto;
}

.steps {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 3rem;
  margin-bottom: 4rem;
}

.step {
  text-align: center;
}

.step-number {
  font-size: 3rem;
  font-weight: 700;
  color: var(--color-gray-800);
  line-height: 1;
  margin-bottom: 1rem;
  font-family: var(--font-mono);
}

.step-title {
  margin-bottom: 0.75rem;
  color: var(--color-white);
}

.step-description {
  color: var(--color-gray-500);
  text-align: center;
}

.demo-video {
  background: var(--color-gray-950);
  border: 1px solid var(--color-gray-900);
  border-radius: 0.75rem;
  padding: 4rem;
  text-align: center;
}

.video-placeholder {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1rem;
  color: var(--color-gray-600);
}

/* Download Section */
.download {
  padding: 6rem 2rem;
  background: var(--color-gray-950);
  border-top: 1px solid var(--color-gray-900);
}

.download-container {
  max-width: 800px;
  margin: 0 auto;
  text-align: center;
}

.download-description {
  text-align: center !important;
  color: var(--color-gray-400);
  line-height: 1.6;
  margin: 1.5rem auto;
}

.download-specs {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 2rem;
  margin: 3rem 0;
}

.spec {
  text-align: center;
}

.spec-label {
  display: block;
  font-size: 0.875rem;
  color: var(--color-gray-500);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 0.25rem;
}

.spec-value {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--color-white);
}

.download-actions {
  margin-top: 3rem;
}

.download-note {
  margin-top: 1rem;
  color: var(--color-gray-500);
  font-size: 0.875rem;
  text-align: center;
  margin-left: auto;
  margin-right: auto;
}

/* Feedback Section */
.feedback {
  padding: 6rem 2rem;
  background: var(--color-black);
  border-top: 1px solid var(--color-gray-900);
}

.feedback-container {
  max-width: 600px;
  margin: 0 auto;
}

.feedback-form {
  margin-top: 2rem;
}

.form-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1rem;
  margin-bottom: 1rem;
}

.form-group {
  margin-bottom: 1.5rem;
}

.form-group label {
  display: block;
  margin-bottom: 0.5rem;
  color: var(--color-gray-300);
  font-weight: 500;
  font-size: 0.875rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 0.75rem;
  background: var(--color-gray-950);
  border: 1px solid var(--color-gray-800);
  border-radius: 0.5rem;
  color: var(--color-white);
  font-family: inherit;
  font-size: 1rem;
  transition: var(--transition-base);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--color-gray-600);
  background: var(--color-gray-900);
}

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

.form-actions {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.feedback-status {
  color: var(--color-gray-400);
  font-size: 0.875rem;
}

.feedback-status.success {
  color: #28ca42;
}

.feedback-status.error {
  color: #ff5f57;
}

/* Footer */
.footer {
  padding: 3rem 2rem;
  background: var(--color-gray-950);
  border-top: 1px solid var(--color-gray-900);
}

.footer-container {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 2rem;
}

.footer-brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-weight: 700;
  color: var(--color-gray-400);
}

.footer-links {
  display: flex;
  gap: 2rem;
}

.footer-links a {
  color: var(--color-gray-500);
  font-size: 0.875rem;
}

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

.footer-copyright {
  color: var(--color-gray-600);
  font-size: 0.875rem;
}

/* Responsive Design */
@media (max-width: 768px) {
  .nav-menu {
    display: none;
  }
  
  .hero-container {
    grid-template-columns: 1fr;
  }
  
  .hero-visual {
    display: none;
  }
  
  .steps {
    grid-template-columns: 1fr;
    gap: 2rem;
  }
  
  .download-specs {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .form-grid {
    grid-template-columns: 1fr;
  }
  
  .footer-container {
    flex-direction: column;
    text-align: center;
  }
}

/* Smooth Scroll */
html {
  scroll-padding-top: 80px;
}

/* Selection */
::selection {
  background: var(--color-white);
  color: var(--color-black);
}

/* Focus Styles */
:focus-visible {
  outline: 2px solid var(--color-white);
  outline-offset: 2px;
}

/* Print Styles */
@media print {
  body {
    background: white;
    color: black;
  }
  
  .nav, .hero-visual, .footer {
    display: none;
  }
}