/* ============================================
   BTIMES CS2 TOURNAMENT — TACTICAL DARK THEME
   ============================================ */

:root {
  --bg-deep: #06060b;
  --bg-base: #0a0a12;
  --bg-surface: #10111a;
  --bg-card: #141520;
  --bg-card-hover: #1a1b2e;
  --border: #1e2035;
  --border-bright: #2a2d4a;

  --accent: #00e5ff;
  --accent-dim: #00e5ff33;
  --accent-glow: #00e5ff18;
  --accent-secondary: #f59e0b;
  --accent-secondary-dim: #f59e0b33;

  --text: #e8eaf0;
  --text-mid: #8b8fa8;
  --text-dim: #4a4e6a;

  --danger: #ff4757;
  --danger-dim: #ff475722;
  --success: #00e676;
  --success-dim: #00e67622;

  --font-display: 'Bebas Neue', sans-serif;
  --font-heading: 'Rajdhani', sans-serif;
  --font-mono: 'IBM Plex Mono', monospace;

  --radius: 4px;
  --radius-lg: 8px;
}

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

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

body {
  font-family: var(--font-heading);
  font-weight: 500;
  background: var(--bg-deep);
  color: var(--text);
  min-height: 100vh;
  overflow-x: hidden;
  position: relative;
}

/* Background effects */
.bg-grid {
  position: fixed;
  inset: 0;
  background-image:
    linear-gradient(var(--border) 1px, transparent 1px),
    linear-gradient(90deg, var(--border) 1px, transparent 1px);
  background-size: 60px 60px;
  opacity: 0.15;
  pointer-events: none;
  z-index: 0;
}

.bg-scanline {
  position: fixed;
  inset: 0;
  background: repeating-linear-gradient(
    0deg,
    transparent,
    transparent 2px,
    rgba(0, 0, 0, 0.03) 2px,
    rgba(0, 0, 0, 0.03) 4px
  );
  pointer-events: none;
  z-index: 0;
}

/* Header */
.site-header {
  position: relative;
  z-index: 10;
  padding: 2.5rem 2rem 0;
}

.header-inner {
  max-width: 960px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
}

.brand-tag {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.25em;
  color: var(--accent);
  margin-bottom: 0.25rem;
}

.brand-name {
  font-family: var(--font-display);
  font-size: 4.5rem;
  line-height: 0.85;
  letter-spacing: 0.04em;
  color: var(--text);
  text-shadow: 0 0 40px var(--accent-dim);
}

.brand-sub {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  font-weight: 400;
  letter-spacing: 0.3em;
  color: var(--text-dim);
  margin-top: 0.5rem;
}

/* Team Counter */
.team-counter {
  text-align: right;
  padding-bottom: 0.5rem;
}

.counter-label {
  font-family: var(--font-mono);
  font-size: 0.6rem;
  font-weight: 600;
  letter-spacing: 0.25em;
  color: var(--text-dim);
  margin-bottom: 0.35rem;
}

.counter-value {
  font-family: var(--font-display);
  font-size: 3rem;
  line-height: 1;
  color: var(--accent);
  text-shadow: 0 0 30px var(--accent-dim);
}

.header-line {
  max-width: 960px;
  margin: 1.25rem auto 0;
  height: 1px;
  background: linear-gradient(90deg, var(--accent), var(--border) 50%, transparent);
}

/* Main Content */
.main-content {
  position: relative;
  z-index: 10;
  max-width: 960px;
  margin: 0 auto;
  padding: 2.5rem 2rem 4rem;
}

/* Success Screen */
.success-screen {
  display: none;
  text-align: center;
  padding: 6rem 2rem;
  animation: fadeIn 0.5s ease;
}

.success-screen.active {
  display: block;
}

.success-icon {
  color: var(--success);
  margin-bottom: 1.5rem;
  animation: successPulse 2s ease infinite;
}

@keyframes successPulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.8; transform: scale(1.05); }
}

.success-title {
  font-family: var(--font-display);
  font-size: 2.5rem;
  letter-spacing: 0.05em;
  color: var(--success);
  margin-bottom: 0.75rem;
}

.success-text {
  font-size: 1rem;
  color: var(--text-mid);
  margin-bottom: 2rem;
}

/* Form */
.reg-form {
  animation: fadeIn 0.4s ease;
}

.reg-form.hidden {
  display: none;
}

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

/* Form Error Banner */
.form-error {
  display: none;
  background: var(--danger-dim);
  border: 1px solid var(--danger);
  border-left: 3px solid var(--danger);
  border-radius: var(--radius);
  padding: 1rem 1.25rem;
  margin-bottom: 2rem;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  line-height: 1.6;
  color: var(--danger);
}

.form-error.visible {
  display: block;
  animation: shake 0.4s ease;
}

@keyframes shake {
  0%, 100% { transform: translateX(0); }
  20%, 60% { transform: translateX(-6px); }
  40%, 80% { transform: translateX(6px); }
}

/* Sections */
.form-section {
  margin-bottom: 2.5rem;
}

.section-header {
  display: flex;
  align-items: baseline;
  gap: 0.75rem;
  margin-bottom: 1.25rem;
  padding-bottom: 0.75rem;
  border-bottom: 1px solid var(--border);
}

.section-number {
  font-family: var(--font-display);
  font-size: 1.8rem;
  color: var(--accent);
  line-height: 1;
  opacity: 0.4;
}

.section-title {
  font-family: var(--font-heading);
  font-size: 1.1rem;
  font-weight: 700;
  letter-spacing: 0.15em;
  color: var(--text);
}

.section-badge {
  font-family: var(--font-mono);
  font-size: 0.6rem;
  font-weight: 600;
  letter-spacing: 0.15em;
  color: var(--accent-secondary);
  background: var(--accent-secondary-dim);
  padding: 0.2rem 0.6rem;
  border-radius: 2px;
  margin-left: auto;
}

/* Fields */
.fields-row {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 1rem;
}

.fields-row--two {
  grid-template-columns: 1fr 1fr;
}

.fields-row--three {
  grid-template-columns: 1fr 1fr 1fr;
}

.field--small {
  width: 140px;
}

.field {
  margin-bottom: 0.25rem;
}

.field label {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.65rem;
  font-weight: 600;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--text-dim);
  margin-bottom: 0.4rem;
}

.field-hint {
  color: var(--text-dim);
  opacity: 0.6;
  font-weight: 400;
}

.field input {
  width: 100%;
  font-family: var(--font-heading);
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--text);
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 0.7rem 0.9rem;
  outline: none;
  transition: border-color 0.2s, box-shadow 0.2s, background 0.2s;
}

.field input::placeholder {
  color: var(--text-dim);
  opacity: 0.6;
}

.field input:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-glow), inset 0 0 12px var(--accent-glow);
  background: var(--bg-surface);
}

.field input.has-error {
  border-color: var(--danger);
  box-shadow: 0 0 0 3px var(--danger-dim);
}

.field-error {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  color: var(--danger);
  margin-top: 0.3rem;
  min-height: 1rem;
}

/* Submit */
.form-submit {
  margin-top: 2rem;
  text-align: center;
}

.btn {
  font-family: var(--font-heading);
  font-weight: 700;
  letter-spacing: 0.2em;
  border: none;
  cursor: pointer;
  border-radius: var(--radius);
  transition: all 0.2s;
}

.btn-primary {
  font-size: 1.1rem;
  padding: 1rem 3.5rem;
  background: var(--accent);
  color: var(--bg-deep);
  position: relative;
  overflow: hidden;
}

.btn-primary::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, transparent 40%, rgba(255,255,255,0.15) 50%, transparent 60%);
  transform: translateX(-100%);
  transition: transform 0.5s;
}

.btn-primary:hover::before {
  transform: translateX(100%);
}

.btn-primary:hover {
  box-shadow: 0 0 30px var(--accent-dim), 0 0 60px var(--accent-glow);
  transform: translateY(-1px);
}

.btn-primary:active {
  transform: translateY(0) scale(0.98);
}

.btn-primary.loading {
  pointer-events: none;
  opacity: 0.7;
}

.btn-primary .btn-loading {
  display: none;
}

.btn-primary.loading .btn-text {
  display: none;
}

.btn-primary.loading .btn-loading {
  display: inline;
}

.btn-secondary {
  font-size: 0.9rem;
  padding: 0.8rem 2.5rem;
  background: transparent;
  color: var(--accent);
  border: 1px solid var(--accent);
}

.btn-secondary:hover {
  background: var(--accent-glow);
  box-shadow: 0 0 20px var(--accent-glow);
}

/* Footer */
.site-footer {
  position: relative;
  z-index: 10;
  border-top: 1px solid var(--border);
  padding: 1.5rem 2rem;
}

.footer-inner {
  max-width: 960px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.footer-brand {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  letter-spacing: 0.2em;
  color: var(--text-dim);
}

.footer-links {
  display: flex;
  gap: 1.5rem;
}

.footer-links a {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  letter-spacing: 0.15em;
  color: var(--text-dim);
  text-decoration: none;
  transition: color 0.2s;
}

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

/* Responsive */
@media (max-width: 768px) {
  .header-inner {
    flex-direction: column;
    align-items: flex-start;
    gap: 1rem;
  }

  .team-counter {
    text-align: left;
  }

  .brand-name {
    font-size: 3rem;
  }

  .fields-row,
  .fields-row--two,
  .fields-row--three {
    grid-template-columns: 1fr;
  }

  .field--small {
    width: 100%;
  }

  .footer-inner {
    flex-direction: column;
    gap: 1rem;
    text-align: center;
  }
}

@media (max-width: 480px) {
  .site-header {
    padding: 1.5rem 1rem 0;
  }

  .main-content {
    padding: 2rem 1rem 3rem;
  }

  .brand-name {
    font-size: 2.5rem;
  }

  .btn-primary {
    width: 100%;
    padding: 1rem;
  }
}