/* ============================================================
   RCB FAN WEBSITE — MAIN CSS
   Dark Theme Always — Royal Challengers Bengaluru
   ============================================================ */

/* Force Dark Theme regardless of user OS theme */
:root {
  color-scheme: dark !important;
}

/* ============================================================
   CSS VARIABLES — DESIGN TOKENS
   ============================================================ */
:root {
  /* Brand Colors */
  --rcb-red: #CC0000;
  --rcb-red-bright: #FF1A1A;
  --rcb-red-glow: rgba(204, 0, 0, 0.4);
  --rcb-red-dark: #990000;
  --rcb-navy: #001F5B;
  --rcb-navy-light: #0A2472;
  --rcb-gold: #FFD700;
  --rcb-gold-light: #FFE566;
  --rcb-gold-dark: #CC9900;
  --rcb-gold-glow: rgba(255, 215, 0, 0.3);

  /* Background Hierarchy */
  --bg-base: #050508;
  --bg-surface: #0D0D14;
  --bg-card: #12121C;
  --bg-card-hover: #1A1A2E;
  --bg-elevated: #1E1E30;
  --bg-overlay: rgba(5, 5, 8, 0.85);

  /* Text Colors */
  --text-primary: #FFFFFF;
  --text-secondary: #B0B8CC;
  --text-muted: #677088;
  --text-accent: var(--rcb-gold);

  /* Borders */
  --border-subtle: rgba(255, 255, 255, 0.06);
  --border-card: rgba(255, 255, 255, 0.1);
  --border-red: rgba(204, 0, 0, 0.5);
  --border-gold: rgba(255, 215, 0, 0.4);

  /* Gradients */
  --grad-hero: linear-gradient(135deg, #050508 0%, #0D0D14 40%, #0A0015 100%);
  --grad-red: linear-gradient(135deg, var(--rcb-red-dark), var(--rcb-red));
  --grad-gold: linear-gradient(135deg, var(--rcb-gold-dark), var(--rcb-gold));
  --grad-card: linear-gradient(135deg, #12121C, #1A1A2E);
  --grad-section: linear-gradient(180deg, #050508 0%, #0D0D14 100%);

  /* Shadows */
  --shadow-card: 0 4px 30px rgba(0, 0, 0, 0.6);
  --shadow-red: 0 0 30px rgba(204, 0, 0, 0.3);
  --shadow-gold: 0 0 20px rgba(255, 215, 0, 0.25);
  --shadow-hover: 0 8px 40px rgba(204, 0, 0, 0.4);

  /* Typography */
  --font-display: 'Bebas Neue', 'Impact', sans-serif;
  --font-heading: 'Rajdhani', 'Roboto Condensed', sans-serif;
  --font-body: 'Inter', 'Roboto', sans-serif;

  /* Spacing */
  --section-padding: 80px 0;
  --container-max: 1440px;
  --container-pad: 0 40px;

  /* Transitions */
  --transition-fast: 0.2s ease;
  --transition-medium: 0.35s ease;
  --transition-slow: 0.6s ease;

  /* Border Radius */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 16px;
  --radius-xl: 24px;
}

/* ============================================================
   RESET & BASE
   ============================================================ */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  background-color: var(--bg-base) !important;
  color: var(--text-primary) !important;
  font-family: var(--font-body);
  line-height: 1.6;
  overflow-x: hidden;
  min-height: 100vh;
  /* Force dark regardless of OS */
  forced-color-adjust: none;
  -webkit-text-size-adjust: 100%;
}

/* Prevent any light mode override */
@media (prefers-color-scheme: light) {
  body {
    background-color: var(--bg-base) !important;
    color: var(--text-primary) !important;
  }
}

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

a {
  color: inherit;
  text-decoration: none;
}

button {
  cursor: pointer;
  border: none;
  background: none;
  font-family: inherit;
}

ul, ol {
  list-style: none;
}

/* ============================================================
   TYPOGRAPHY
   ============================================================ */
.font-display { font-family: var(--font-display); }
.font-heading { font-family: var(--font-heading); }

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 700;
  line-height: 1.2;
  color: var(--text-primary);
}

.section-title {
  font-family: var(--font-display);
  font-size: clamp(36px, 6vw, 72px);
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--text-primary);
  line-height: 1;
}

.section-subtitle {
  font-family: var(--font-heading);
  font-size: clamp(13px, 1.5vw, 15px);
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--rcb-gold);
  margin-bottom: 12px;
}

.section-desc {
  font-size: 16px;
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto;
}

/* ============================================================
   LAYOUT UTILITIES
   ============================================================ */
.container {
  max-width: var(--container-max);
  width: 100%;
  margin: 0 auto;
  padding: var(--container-pad);
}

.section {
  padding: var(--section-padding);
  position: relative;
}

.section-header {
  text-align: center;
  margin-bottom: 60px;
}

.section-line {
  width: 80px;
  height: 3px;
  background: var(--grad-red);
  margin: 20px auto 0;
  border-radius: 2px;
}

.section-line.gold {
  background: var(--grad-gold);
}

/* Grid utilities */
.grid { display: grid; }
.flex { display: flex; }
.flex-center { display: flex; align-items: center; justify-content: center; }
.flex-between { display: flex; align-items: center; justify-content: space-between; }

/* ============================================================
   BUTTONS
   ============================================================ */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 32px;
  font-family: var(--font-heading);
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  border-radius: var(--radius-sm);
  transition: all var(--transition-medium);
  cursor: pointer;
  position: relative;
  overflow: hidden;
}

.btn::before {
  content: '';
  position: absolute;
  inset: 0;
  background: rgba(255, 255, 255, 0.1);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--transition-medium);
}

.btn:hover::before { transform: scaleX(1); }

.btn-primary {
  background: var(--grad-red);
  color: #fff;
  box-shadow: 0 0 20px var(--rcb-red-glow);
}

.btn-primary:hover {
  box-shadow: 0 0 40px var(--rcb-red-glow);
  transform: translateY(-2px);
}

.btn-gold {
  background: var(--grad-gold);
  color: #000;
  box-shadow: 0 0 20px var(--rcb-gold-glow);
}

.btn-gold:hover {
  box-shadow: 0 0 40px var(--rcb-gold-glow);
  transform: translateY(-2px);
}

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

.btn-outline:hover {
  border-color: var(--rcb-red);
  color: var(--rcb-red);
}

.btn-outline-gold {
  background: transparent;
  color: var(--rcb-gold);
  border: 1px solid var(--border-gold);
}

.btn-outline-gold:hover {
  background: var(--rcb-gold);
  color: #000;
}

/* ============================================================
   CARDS
   ============================================================ */
.card {
  background: var(--bg-card);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: all var(--transition-medium);
  position: relative;
}

.card:hover {
  border-color: var(--rcb-red);
  box-shadow: var(--shadow-hover);
  transform: translateY(-4px);
}

.card-glass {
  background: rgba(255, 255, 255, 0.04);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid rgba(255, 255, 255, 0.08);
}

/* ============================================================
   TAGS / BADGES
   ============================================================ */
.tag {
  display: inline-block;
  padding: 4px 12px;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  border-radius: 2px;
}

.tag-red {
  background: var(--rcb-red);
  color: #fff;
}

.tag-gold {
  background: var(--rcb-gold);
  color: #000;
}

.tag-navy {
  background: var(--rcb-navy);
  color: #fff;
  border: 1px solid var(--rcb-gold);
}

.tag-outline {
  background: transparent;
  border: 1px solid var(--border-card);
  color: var(--text-secondary);
}

/* ============================================================
   SCROLL ANIMATIONS
   ============================================================ */
.reveal {
  opacity: 0;
  transform: translateY(40px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

.reveal-left {
  opacity: 0;
  transform: translateX(-40px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

.reveal-left.visible {
  opacity: 1;
  transform: translateX(0);
}

.reveal-right {
  opacity: 0;
  transform: translateX(40px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

.reveal-right.visible {
  opacity: 1;
  transform: translateX(0);
}

/* Stagger children */
.stagger > * { opacity: 0; transform: translateY(30px); }
.stagger.visible > *:nth-child(1) { animation: revealUp 0.6s ease 0.1s forwards; }
.stagger.visible > *:nth-child(2) { animation: revealUp 0.6s ease 0.2s forwards; }
.stagger.visible > *:nth-child(3) { animation: revealUp 0.6s ease 0.3s forwards; }
.stagger.visible > *:nth-child(4) { animation: revealUp 0.6s ease 0.4s forwards; }
.stagger.visible > *:nth-child(5) { animation: revealUp 0.6s ease 0.5s forwards; }
.stagger.visible > *:nth-child(6) { animation: revealUp 0.6s ease 0.6s forwards; }
.stagger.visible > *:nth-child(n+7) { animation: revealUp 0.6s ease 0.7s forwards; }

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

/* ============================================================
   DECORATIVE ELEMENTS
   ============================================================ */
.red-line {
  width: 60px;
  height: 3px;
  background: var(--rcb-red);
  border-radius: 2px;
}

.gold-line {
  width: 60px;
  height: 3px;
  background: var(--rcb-gold);
  border-radius: 2px;
}

.divider {
  width: 100%;
  height: 1px;
  background: var(--border-subtle);
  margin: 40px 0;
}

/* Glowing dot */
.glow-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--rcb-red);
  box-shadow: 0 0 8px var(--rcb-red), 0 0 16px var(--rcb-red-glow);
  animation: pulse-dot 2s ease-in-out infinite;
}

@keyframes pulse-dot {
  0%, 100% { transform: scale(1); opacity: 1; }
  50% { transform: scale(1.4); opacity: 0.7; }
}

/* ============================================================
   SCROLLBAR
   ============================================================ */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--bg-base); }
::-webkit-scrollbar-thumb { background: var(--rcb-red-dark); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--rcb-red); }

/* ============================================================
   SELECTION
   ============================================================ */
::selection {
  background: var(--rcb-red);
  color: #fff;
}

/* ============================================================
   SECTION BACKGROUNDS
   ============================================================ */
.bg-dark { background: var(--bg-base); }
.bg-surface { background: var(--bg-surface); }
.bg-card { background: var(--bg-card); }

/* ============================================================
   LOADING SCREEN
   ============================================================ */
#loading-screen {
  position: fixed;
  inset: 0;
  background: var(--bg-base);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  z-index: 9999;
  transition: opacity 0.5s ease;
}

#loading-screen.hidden {
  opacity: 0;
  pointer-events: none;
}

.loader-logo {
  font-family: var(--font-display);
  font-size: 64px;
  color: var(--rcb-red);
  letter-spacing: 0.1em;
  animation: pulse-logo 1s ease-in-out infinite;
  margin-bottom: 20px;
}

.loader-bar {
  width: 200px;
  height: 2px;
  background: var(--border-subtle);
  border-radius: 1px;
  overflow: hidden;
}

.loader-bar::after {
  content: '';
  display: block;
  width: 40%;
  height: 100%;
  background: var(--rcb-red);
  border-radius: 1px;
  animation: loader-slide 1s ease infinite;
}

@keyframes loader-slide {
  0% { transform: translateX(-100%); }
  100% { transform: translateX(350%); }
}

@keyframes pulse-logo {
  0%, 100% { opacity: 1; text-shadow: 0 0 20px var(--rcb-red-glow); }
  50% { opacity: 0.7; text-shadow: 0 0 40px var(--rcb-red-glow); }
}

/* ============================================================
   BACK TO TOP
   ============================================================ */
#back-to-top {
  position: fixed;
  bottom: 30px;
  right: 30px;
  width: 48px;
  height: 48px;
  background: var(--rcb-red);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  z-index: 900;
  opacity: 0;
  transform: translateY(20px);
  transition: all var(--transition-medium);
  box-shadow: 0 4px 20px var(--rcb-red-glow);
}

#back-to-top.visible {
  opacity: 1;
  transform: translateY(0);
}

#back-to-top:hover {
  background: var(--rcb-red-bright);
  transform: translateY(-4px);
}

/* ============================================================
   RESPONSIVE UTILITIES
   ============================================================ */
@media (max-width: 1200px) {
  :root { --container-pad: 0 30px; }
}

@media (max-width: 768px) {
  :root {
    --container-pad: 0 20px;
    --section-padding: 60px 0;
  }
  .section-header { margin-bottom: 40px; }
}

@media (max-width: 480px) {
  :root { --container-pad: 0 16px; }
}