/* 
  ravitejabitra.in - Dynamic Ambient Vibe & High-End Athletic System
*/

:root {
  --bg-primary: #0a0a0a;
  --bg-secondary: #111111;
  --bg-card: #141414;
  --text-primary: #ffffff;
  --text-secondary: #a3a3a3;
  --text-muted: #525252;
  
  /* Default theme color */
  --theme-color: #d9f95d;
  --theme-glow: rgba(217, 249, 93, 0.15);
  
  --border-color: rgba(255, 255, 255, 0.08);
  --border-hover: rgba(255, 255, 255, 0.25);
  
  --font-family: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --max-width: 960px;
  --nav-height: 72px;
  --transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

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

html { scroll-behavior: smooth; }

body {
  background-color: var(--bg-primary);
  color: var(--text-primary);
  font-family: var(--font-family);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
  position: relative;
  min-height: 100vh;
}

::selection { background: var(--theme-color); color: #000; }

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

img { display: block; max-width: 100%; }

/* ── Smooth Page Entrance & Exit ──────────────────────────────── */
body {
  opacity: 0;
  transform: translateY(6px);
  animation: smoothPageEnter 0.45s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

@keyframes smoothPageEnter {
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

body.page-exit {
  opacity: 0;
  transform: translateY(-8px);
  transition: opacity 0.3s ease, transform 0.3s ease;
}

/* ── Dynamic Ambient Background Aura ────────────────────────── */
#ambient-aura {
  position: fixed;
  top: 50%;
  left: 50%;
  width: 900px;
  height: 900px;
  transform: translate(-50%, -50%);
  border-radius: 50%;
  background: radial-gradient(circle, var(--aura-color, rgba(217, 249, 93, 0.05)) 0%, transparent 70%);
  pointer-events: none;
  z-index: 0;
  opacity: 0;
  transition: opacity 0.6s ease, background 0.6s ease, transform 0.2s cubic-bezier(0.16, 1, 0.3, 1);
  filter: blur(60px);
}

body.aura-active #ambient-aura {
  opacity: 1;
}

/* ── Typography ───────────────────────────────────────────────── */
h1, h2, h3, h4 {
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -0.025em;
}

/* ── Layout ───────────────────────────────────────────────────── */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 28px;
  position: relative;
  z-index: 1;
}

/* ── Navigation ───────────────────────────────────────────────── */
header {
  position: fixed;
  top: 0; left: 0;
  width: 100%;
  height: var(--nav-height);
  background: rgba(10, 10, 10, 0.85);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border-color);
  z-index: 200;
  display: flex;
  align-items: center;
}

.nav-content {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
}

.logo {
  font-size: 1.1rem;
  font-weight: 900;
  letter-spacing: -0.02em;
  text-transform: uppercase;
}

.logo span { color: var(--theme-color); }

.nav-links {
  display: flex;
  gap: 36px;
  list-style: none;
}

.nav-links a {
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-secondary);
}

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

.menu-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  width: 32px; height: 32px;
  background: none;
  border: none;
  cursor: pointer;
  gap: 5px;
  z-index: 201;
}

.menu-toggle span {
  display: block;
  width: 22px; height: 2px;
  background: var(--text-primary);
  border-radius: 2px;
  transition: var(--transition);
}

/* ── Main ─────────────────────────────────────────────────────── */
main {
  padding-top: calc(var(--nav-height) + 80px);
  padding-bottom: 120px;
}

/* ── Hero ─────────────────────────────────────────────────────── */
.hero {
  margin-bottom: 100px;
}

.hero-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--theme-color);
  background: rgba(217, 249, 93, 0.08);
  border: 1px solid rgba(217, 249, 93, 0.2);
  padding: 6px 14px;
  border-radius: 100px;
  margin-bottom: 24px;
}

.hero-eyebrow::before {
  content: '';
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--theme-color);
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.5; transform: scale(0.8); }
}

.hero-title {
  font-size: clamp(2.8rem, 6vw, 5rem);
  font-weight: 900;
  letter-spacing: -0.04em;
  margin-bottom: 24px;
  line-height: 1.05;
}

.hero-title .accent { color: var(--theme-color); }

.hero-bio {
  font-size: clamp(1rem, 2vw, 1.2rem);
  color: var(--text-secondary);
  max-width: 620px;
  line-height: 1.65;
  margin-bottom: 16px;
}

.hero-bio strong {
  color: var(--text-primary);
  font-weight: 600;
}

/* ── Section Header ───────────────────────────────────────────── */
.section-header {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 28px;
}

.section-header h2 {
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-muted);
  white-space: nowrap;
}

.section-header-line {
  flex: 1;
  height: 1px;
  background: var(--border-color);
}

/* ── Card Sections ────────────────────────────────────────────── */
.card-section {
  margin-bottom: 72px;
}

.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 16px;
}

/* ── Interactive Spotlight Activity Card ───────────────────────── */
.activity-card {
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding: 28px 24px;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 14px;
  cursor: pointer;
  text-decoration: none;
  position: relative;
  overflow: hidden;
  transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1), border-color 0.3s ease, box-shadow 0.3s ease;
}

/* Internal Mouse Spotlight */
.activity-card::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(
    300px circle at var(--mouse-x, 50%) var(--mouse-y, 50%),
    var(--card-spotlight, rgba(255, 255, 255, 0.06)),
    transparent 80%
  );
  opacity: 0;
  transition: opacity 0.3s ease;
  pointer-events: none;
}

/* Arrow indicator */
.activity-card::after {
  content: '→';
  position: absolute;
  bottom: 24px;
  right: 24px;
  font-size: 1rem;
  color: var(--card-accent, var(--theme-color));
  opacity: 0;
  transform: translateX(-6px);
  transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

.activity-card:hover {
  transform: translateY(-5px) scale(1.015);
  border-color: var(--card-accent, var(--theme-color));
  box-shadow: 0 16px 40px -10px var(--card-glow, var(--theme-glow));
}

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

.activity-card:hover::after {
  opacity: 1;
  transform: translateX(0);
}

.card-icon {
  font-size: 2.2rem;
  line-height: 1;
  transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

.activity-card:hover .card-icon {
  transform: scale(1.12) rotate(-3deg);
}

.card-name {
  font-size: 1.15rem;
  font-weight: 800;
  color: var(--text-primary);
  letter-spacing: -0.01em;
  transition: color 0.3s ease;
}

.activity-card:hover .card-name {
  color: var(--card-accent, var(--theme-color));
}

.card-tag {
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-muted);
}

/* ── Activity Themes Definitions ──────────────────────────────── */
.activity-card[data-theme="strength"] {
  --card-accent: #f59e0b; /* Iron Amber Gold */
  --card-glow: rgba(245, 158, 11, 0.3);
  --card-spotlight: rgba(245, 158, 11, 0.12);
}

.activity-card[data-theme="running"] {
  --card-accent: #d9f95d; /* Electric Lime */
  --card-glow: rgba(217, 249, 93, 0.3);
  --card-spotlight: rgba(217, 249, 93, 0.12);
}

.activity-card[data-theme="cycling"] {
  --card-accent: #06b6d4; /* Velocity Cyan */
  --card-glow: rgba(6, 182, 212, 0.3);
  --card-spotlight: rgba(6, 182, 212, 0.12);
}

.activity-card[data-theme="swimming"] {
  --card-accent: #38bdf8; /* Hydro Ocean Blue */
  --card-glow: rgba(56, 189, 248, 0.3);
  --card-spotlight: rgba(56, 189, 248, 0.12);
}

.activity-card[data-theme="badminton"] {
  --card-accent: #f43f5e; /* Smash Rose Crimson */
  --card-glow: rgba(244, 63, 94, 0.3);
  --card-spotlight: rgba(244, 63, 94, 0.12);
}

.activity-card[data-theme="travel"] {
  --card-accent: #a855f7; /* Aurora Violet */
  --card-glow: rgba(168, 85, 247, 0.3);
  --card-spotlight: rgba(168, 85, 247, 0.12);
}

.activity-card[data-theme="nutrition"] {
  --card-accent: #10b981; /* Vitality Emerald */
  --card-glow: rgba(16, 185, 129, 0.3);
  --card-spotlight: rgba(16, 185, 129, 0.12);
}

.activity-card[data-theme="mindset"] {
  --card-accent: #8b5cf6; /* Cosmic Indigo */
  --card-glow: rgba(139, 92, 246, 0.3);
  --card-spotlight: rgba(139, 92, 246, 0.12);
}

.activity-card[data-theme="motivation"] {
  --card-accent: #eab308; /* Solar Gold Spotlight */
  --card-glow: rgba(234, 179, 8, 0.3);
  --card-spotlight: rgba(234, 179, 8, 0.12);
}

/* ── Divider ──────────────────────────────────────────────────── */
.divider {
  height: 1px;
  background: var(--border-color);
  margin: 72px 0;
}

/* ── Connect Section ──────────────────────────────────────────── */
.connect-title {
  font-size: 2rem;
  font-weight: 900;
  letter-spacing: -0.03em;
  margin-bottom: 12px;
}

.connect-desc {
  color: var(--text-secondary);
  font-size: 1.05rem;
  max-width: 500px;
  margin-bottom: 40px;
  line-height: 1.6;
}

.form-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-bottom: 16px;
}

.form-input {
  width: 100%;
  padding: 14px 18px;
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  color: var(--text-primary);
  font-size: 0.95rem;
  font-family: var(--font-family);
  transition: var(--transition);
}

.form-input:focus {
  outline: none;
  border-color: var(--theme-color);
  background: var(--bg-card);
}

textarea.form-input {
  resize: vertical;
  min-height: 130px;
  margin-bottom: 16px;
  grid-column: 1 / -1;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 32px;
  background: var(--theme-color);
  color: #000;
  font-weight: 800;
  font-size: 0.9rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  border-radius: 8px;
  border: none;
  cursor: pointer;
  transition: var(--transition);
}

.btn:hover {
  background: #bde038;
  transform: translateY(-2px);
  box-shadow: 0 8px 24px var(--theme-glow);
}

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

.footer-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 24px;
  flex-wrap: wrap;
}

.footer-socials {
  display: flex;
  gap: 28px;
}

.social-link {
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-muted);
  transition: var(--transition);
}

.social-link:hover { color: var(--theme-color); }

.copyright {
  font-size: 0.8rem;
  color: var(--text-muted);
}

/* ── Responsive ───────────────────────────────────────────────── */
@media (max-width: 768px) {
  .menu-toggle { display: flex; }

  .nav-links {
    position: fixed;
    top: 0; left: 0;
    width: 100%; height: 100vh;
    background: rgba(10, 10, 10, 0.98);
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 40px;
    opacity: 0;
    pointer-events: none;
    transition: var(--transition);
    z-index: 200;
  }

  .nav-links.active {
    opacity: 1;
    pointer-events: auto;
  }

  .nav-links a { font-size: 1.4rem; }

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

  .card-grid {
    grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
  }

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