/* =========================================
   LANDING PAGE STYLES (index.css)
   ========================================= */

:root {
  /* 
   * Color Palette Definition
   * We use CSS variables for all colors to ensure instant consistency across the app.
   * This also makes implementing Dark/Light mode trivial by just overriding these variables 
   * under the 'body.light-mode' class selector.
   */
  --color-brand-dark: #0f172a; /* slate-900 */
  --color-brand-card: #1e293b; /* slate-800 */
  --color-brand-primary: #0f807b; /* Turbine Green */
  --color-brand-secondary: #115e59; /* Darker Teal */
  --color-brand-accent: #38bdf8; /* Light Blue */
  --color-text-main: #f8fafc; /* slate-50 */
  --color-text-muted: #94a3b8; /* slate-400 */
  --color-border: #334155; /* slate-700 */
  --font-family: "Inter", system-ui, sans-serif;
}

/* Default Body (Dark Mode by default) */
body {
  background-color: var(--color-brand-dark);
  color: var(--color-text-main);
  font-family: var(--font-family);
  margin: 0;
  line-height: 1.6;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

/* Light Mode Override */
body.light-mode {
  --color-brand-dark: #f8fafc;
  --color-brand-card: #ffffff;
  --color-text-main: #1e293b;
  --color-text-muted: #64748b;
  --color-border: #e2e8f0;
}
body.light-mode {
  background-color: var(--color-brand-dark);
  color: var(--color-text-main);
}

/* ============================
   UI COMPONENTS
   ============================ */

/* Navbar */
.navbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1.5rem 2rem;
  border-bottom: 1px solid var(--color-border);
  background-color: var(--color-brand-dark); /* Ensure it matches body */
  width: 100%;
  box-sizing: border-box; /* Fix lines not going till end */
}

.logo {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-brand-accent);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}
body.light-mode .logo {
  color: #0284c7;
}
.logo-text {
  letter-spacing: -0.025em;
}

.nav-links {
  display: flex;
  gap: 1rem;
  align-items: center;
}

/* Buttons */
.btn {
  display: inline-flex;
  padding: 0.75rem 1.5rem;
  border-radius: 0.5rem;
  font-weight: 600;
  text-decoration: none;
  cursor: pointer;
  border: none;
  font-size: 0.875rem;
  transition: all 0.2s;
  color: white;
  align-items: center;
  justify-content: center;
}
.btn:hover {
  transform: translateY(-2px);
}

.btn-login {
  background-color: #374151; /* gray-700 */
}
.btn-login:hover {
  background-color: #4b5563; /* gray-600 */
}

.btn-primary {
  background-color: var(--color-brand-primary);
  box-shadow: 0 10px 15px -3px rgba(20, 184, 166, 0.2);
}
.btn-primary:hover {
  background-color: var(--color-brand-secondary);
}

.btn-icon {
  background: none;
  border: none;
  cursor: pointer;
  font-size: 1.5rem;
  transition: transform 0.2s;
  padding: 0;
  color: inherit;
}
.btn-icon:hover {
  transform: scale(1.1);
}

/* Hero Section */
.hero {
  flex: 1;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-align: center;
  padding: 5rem 1rem;
  position: relative;
  overflow: hidden;
}

.hero-glow {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 24rem;
  height: 24rem;
  background-color: var(--color-brand-primary);
  opacity: 0.2;
  filter: blur(120px);
  border-radius: 50%;
  pointer-events: none;
  z-index: 0;
}

.hero-content {
  position: relative;
  z-index: 10;
  max-width: 50rem;
  margin: 0 auto;
}

.hero h1 {
  font-size: 3rem;
  margin-bottom: 1.5rem;
  font-weight: 800;
  background: linear-gradient(
    to right,
    #2dd4bf,
    #3b82f6
  ); /* teal-400 to blue-500 */
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  transition: transform 0.5s;
}
.hero h1:hover {
  transform: scale(1.05);
}

@media (min-width: 768px) {
  .hero h1 {
    font-size: 4.5rem;
  }
}

.hero p {
  font-size: 1.25rem;
  color: var(--color-text-muted);
  max-width: 42rem;
  margin: 0 auto 2.5rem auto;
  font-weight: 300;
}

/* Search Box */
.search-container {
  display: flex;
  justify-content: center;
  position: relative; /* z-index context */
  z-index: 10;
}

.search-box {
  background: rgba(30, 41, 59, 0.6);
  border: 1px solid var(--color-border);
  padding: 0.5rem;
  border-radius: 9999px;
  display: flex;
  width: 100%;
  max-width: 32rem;
  transition: all 0.3s;
  box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
}
.search-box:focus-within {
  border-color: var(--color-brand-accent);
  box-shadow: 0 0 0 2px rgba(56, 189, 248, 0.5);
}
body.light-mode .search-box {
  background: white;
}

.search-box input {
  background: transparent;
  border: none;
  color: inherit;
  flex: 1;
  padding: 0.75rem 1.5rem;
  font-size: 1rem;
  outline: none;
}

.btn-search {
  background-color: var(--color-brand-primary);
  color: white;
  padding: 0.75rem 2rem;
  border-radius: 9999px;
  font-weight: 700;
  border: none;
  cursor: pointer;
  transition: background-color 0.2s;
}
.btn-search:hover {
  background-color: var(--color-brand-secondary);
}

.analytics-link {
  margin-top: 2rem;
  position: relative;
  z-index: 10;
}
.analytics-link a {
  color: var(--color-brand-accent);
  text-decoration: none;
  font-weight: 500;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  justify-content: center;
}
.analytics-link a:hover {
  color: #93c5fd; /* blue-300 */
}

/* Features Section */
.features-section {
  padding: 4rem 1.5rem;
  width: 100%;
  max-width: 1200px; /* Container mx-auto equiv */
  margin: 0 auto;
  box-sizing: border-box;
}

.card-grid {
  display: grid;
  /* 
   * We use CSS Grid here instead of Flexbox because we want 2D alignment.
   * Cards should line up perfectly in rows AND columns.
   * '1fr' allows the track to take up available space, fixing the "stretching" issue.
   */
  grid-template-columns: 1fr;
  gap: 2rem;
}

@media (min-width: 768px) {
  .card-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.card {
  background-color: var(--color-brand-card);
  border: 1px solid var(--color-border);
  padding: 2rem;
  border-radius: 1rem;
  transition: all 0.3s;
  /* width: 100%;  -- Already consistent with grid */
  text-align: left;
}
.card:hover {
  border-color: var(--color-brand-primary);
  transform: translateY(-0.5rem);
  box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1),
    0 10px 10px -5px rgba(0, 0, 0, 0.04);
}
/* Specific hover colors for different cards if needed like in original HTML, but standardizing is cleaner. 
   Original had: hover:border-brand-primary, hover:border-blue-500, hover:border-yellow-500.
   Let's keep it simple or use nth-child for variety.
*/

.card:nth-child(2):hover {
  border-color: #3b82f6; /* blue-500 */
}
.card:nth-child(3):hover {
  border-color: #eab308; /* yellow-500 */
}

.card h3 {
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 1rem;
  margin-top: 0;
  display: flex;
  align-items: center;
  gap: 0.75rem;
  color: inherit;
}

.card-icon {
  font-size: 2rem;
  transition: transform 0.3s;
  display: inline-block;
}
.card:hover .card-icon {
  transform: scale(1.1);
}

.card p {
  color: var(--color-text-muted);
  line-height: 1.625;
  margin: 0;
}

/* Footer */
.footer {
  text-align: center;
  padding: 2rem;
  color: #64748b; /* slate-500 */
  border-top: 1px solid var(--color-border);
  font-size: 0.875rem;
  width: 100%;
  box-sizing: border-box;
  background-color: var(--color-brand-dark);
}
body.light-mode .footer {
  background-color: var(--color-brand-dark); /* Keep consistent or override? */
}