/**
 * GCSE Revision Hub - Hero Section
 *
 * Feature: F-032.4 Hero Section with Compact Week Tracker
 * Version: 1.0
 * Created: 2026-01-20
 *
 * This file contains styles for the homepage hero section with:
 * - Personalized greeting (time-based)
 * - Exam countdown with circular progress indicator
 * - Weekly progress tracker (7-day inline)
 * - Clickable stats badge (level, streak, XP)
 *
 * DESIGN:
 * - Glassmorphism background (70% opacity + 10px blur)
 * - SVG icons only (NO emojis)
 * - Responsive layout (mobile to desktop)
 * - Uses design tokens from design-system.css
 * - Micro-interactions on hover
 */

/* ============================================================================
   HERO CONTAINER
   ============================================================================ */

.hero-section {
  background: var(--glass-bg);
  backdrop-filter: blur(var(--glass-blur));
  -webkit-backdrop-filter: blur(var(--glass-blur)); /* Safari support */
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-xl);
  padding: var(--space-5);
  margin-bottom: var(--space-6);
  animation: fade-in-up 0.6s var(--ease-out) forwards;
  position: relative;
  overflow: hidden;
  transition: opacity var(--duration-normal) var(--ease-out);
}

/* Light theme glassmorphism - enhanced for visibility */
[data-theme="light"] .hero-section {
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid rgba(0, 0, 0, 0.06);
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.04),
              0 8px 32px rgba(0, 0, 0, 0.06);
}

/* Dark theme glassmorphism */
[data-theme="dark"] .hero-section {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
}

/* P0-001 FIX: Dimmed state for guest users - ONLY after auth confirmed */
/* Guard with :not(.auth-loading) to prevent flash for premium users */
body.guest:not(.auth-loading) .hero-section {
  opacity: 0.5 !important;
  pointer-events: auto !important;
  filter: grayscale(0.3) !important;
  cursor: pointer !important;
  position: relative !important;
}

/* Hover effect for dimmed hero section */
body.guest:not(.auth-loading) .hero-section:hover {
  opacity: 0.6 !important;
}

/* During auth loading - show neutral state (no dimming, no interaction) */
body.auth-loading .hero-section {
  opacity: 1;
  pointer-events: none; /* Prevent clicks during auth check */
  filter: none;
}

/* Click hint overlay - only show after auth confirmed */
body.guest:not(.auth-loading) .hero-section::after {
  content: 'Premium Feature - Click to learn more';
  position: absolute;
  bottom: var(--space-4);
  left: 50%;
  transform: translateX(-50%);
  font-size: var(--text-xs);
  color: var(--text-muted);
  opacity: 0;
  transition: opacity var(--duration-fast) var(--ease-out);
  pointer-events: none;
  z-index: 10;
}

body.guest:not(.auth-loading) .hero-section:hover::after {
  opacity: 1;
}

/* Subtle gradient overlay for depth */
.hero-section::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(
    90deg,
    transparent,
    rgba(255, 255, 255, 0.1),
    transparent
  );
  pointer-events: none;
}

/* ============================================================================
   HERO GRID LAYOUT
   ============================================================================ */

.hero-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-4);
}

@media (min-width: 768px) {
  .hero-grid {
    grid-template-columns: 1fr;
    align-items: center;
    justify-content: center;
  }
}

/* ============================================================================
   GREETING SECTION
   ============================================================================ */

.hero-greeting {
  display: flex;
  align-items: center;
}

@media (min-width: 768px) {
  .hero-greeting {
    grid-area: greeting;
  }
}

.hero-greeting__message {
  font-size: var(--text-2xl);
  font-weight: var(--font-bold);
  background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin: 0;
  line-height: var(--leading-tight);
}

@media (max-width: 480px) {
  .hero-greeting__message {
    font-size: var(--text-xl);
  }
}

/* ============================================================================
   COUNTDOWN SECTION
   ============================================================================ */

.hero-countdown {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-3);
  background: var(--bg-surface);
  border: 1px solid var(--border-default);
  border-radius: var(--radius-lg);
}

@media (min-width: 768px) {
  .hero-countdown {
    grid-area: countdown;
  }
}

/* Circular progress ring */
.countdown-ring {
  width: 60px;
  height: 60px;
  position: relative;
  flex-shrink: 0;
}

.countdown-ring svg {
  width: 100%;
  height: 100%;
  transform: rotate(-90deg); /* Start from top */
}

.countdown-ring__track {
  fill: none;
  stroke: var(--bg-subtle);
  stroke-width: 6;
}

.countdown-ring__progress {
  fill: none;
  stroke: url(#countdown-gradient);
  stroke-width: 6;
  stroke-linecap: round;
  transition: stroke-dashoffset var(--duration-slower) var(--ease-out);
}

.countdown-ring__text {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  text-align: center;
}

.countdown-ring__days {
  font-size: var(--text-xl);
  font-weight: var(--font-bold);
  color: var(--color-primary);
  line-height: 1;
}

.countdown-ring__label {
  font-size: var(--text-2xs);
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: var(--tracking-wide);
}

/* Countdown details */
.countdown-details {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  flex: 1;
}

.countdown-details__title {
  font-size: var(--text-base);
  font-weight: var(--font-semibold);
  color: var(--text-primary);
  margin: 0;
}

.countdown-details__subtitle {
  font-size: var(--text-sm);
  color: var(--text-secondary);
}

.countdown-details__phases {
  display: flex;
  gap: var(--space-2);
  margin-top: var(--space-1);
}

.phase-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  padding: var(--space-1) var(--space-2);
  background: var(--bg-subtle);
  border-radius: var(--radius-full);
  font-size: var(--text-xs);
  font-weight: var(--font-medium);
  color: var(--text-secondary);
}

.phase-badge--active {
  background: rgba(59, 130, 246, 0.1);
  color: var(--color-primary);
  border: 1px solid var(--color-primary);
}

/* ============================================================================
   WEEKLY TRACKER (Minimal Dots in Pill)
   ============================================================================ */

.hero-week-tracker {
  display: flex;
  gap: var(--space-2);
  align-items: center;
}

@media (min-width: 768px) {
  .hero-week-tracker {
    grid-area: week;
  }
}

/* Week tracker label */
.week-tracker__label {
  font-size: var(--text-xs);
  font-weight: var(--font-medium);
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: var(--tracking-wide);
}

/* Week dot container (dot + label) */
.week-dot-container {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-1);
}

/* Individual day dot */
.week-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  transition: all var(--duration-fast) var(--ease-out);
  cursor: pointer;
}

/* Day abbreviation label below dot */
.week-dot-label {
  font-size: 10px;
  font-weight: var(--font-medium);
  color: var(--text-muted);
  text-transform: uppercase;
  line-height: 1;
}

/* Complete - Green */
.week-dot--complete {
  background: var(--color-success);
  box-shadow: 0 0 0 2px rgba(34, 197, 94, 0.2);
}

/* Complete + Bonus - Green with pulse */
.week-dot--complete-plus {
  background: var(--color-success);
  box-shadow: 0 0 0 2px rgba(34, 197, 94, 0.3), 0 0 8px rgba(34, 197, 94, 0.5);
  animation: dot-pulse 2s ease-in-out infinite;
}

@keyframes dot-pulse {
  0%, 100% {
    transform: scale(1);
  }
  50% {
    transform: scale(1.2);
  }
}

/* Partial - Orange */
.week-dot--partial {
  background: var(--color-warning);
  box-shadow: 0 0 0 2px rgba(245, 158, 11, 0.2);
}

/* Missed - Red */
.week-dot--missed {
  background: var(--color-error);
  box-shadow: 0 0 0 2px rgba(239, 68, 68, 0.2);
}

/* Today - Blue with ring */
.week-dot--today {
  background: var(--color-primary);
  box-shadow: 0 0 0 2px rgba(59, 130, 246, 0.3);
  animation: today-pulse 2s ease-in-out infinite;
}

@keyframes today-pulse {
  0%, 100% {
    box-shadow: 0 0 0 2px rgba(59, 130, 246, 0.3);
  }
  50% {
    box-shadow: 0 0 0 4px rgba(59, 130, 246, 0.1);
  }
}

/* Future - Gray */
.week-dot--future {
  background: var(--bg-subtle);
  opacity: 0.4;
}

/* Hover effect */
.week-dot-container:hover .week-dot {
  transform: scale(1.3);
}

/* ============================================================================
   STATS BADGE (Clickable)
   ============================================================================ */

.hero-stats {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

@media (min-width: 768px) {
  .hero-stats {
    grid-area: stats;
    align-items: flex-end;
  }
}

.stats-badge {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-3) var(--space-4);
  background: var(--glass-bg);
  backdrop-filter: blur(var(--glass-blur));
  -webkit-backdrop-filter: blur(var(--glass-blur));
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  cursor: pointer;
  transition: all var(--duration-normal) var(--ease-out);
  position: relative;
  overflow: hidden;
}

.stats-badge:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 16px rgba(0, 0, 0, 0.15);
  border-color: var(--color-primary);
}

.stats-badge:active {
  transform: translateY(0);
}

/* Shimmer effect on hover */
.stats-badge::after {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(
    90deg,
    transparent,
    rgba(255, 255, 255, 0.1),
    transparent
  );
  transition: left var(--duration-slower) var(--ease-out);
  pointer-events: none;
}

.stats-badge:hover::after {
  left: 100%;
}

.stats-badge__content {
  display: flex;
  gap: var(--space-3);
  align-items: center;
  flex: 1;
}

.stats-badge__stat {
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.stats-badge__icon {
  width: 20px;
  height: 20px;
  color: var(--color-primary);
}

.stats-badge__value {
  font-size: var(--text-base);
  font-weight: var(--font-bold);
  color: var(--text-primary);
}

.stats-badge__label {
  font-size: var(--text-xs);
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: var(--tracking-wide);
}

.stats-badge__chevron {
  width: 16px;
  height: 16px;
  color: var(--text-muted);
  flex-shrink: 0;
  transition: transform var(--duration-fast) var(--ease-out);
}

.stats-badge:hover .stats-badge__chevron {
  transform: translateX(4px);
}

/* Light theme glassmorphism - enhanced for visibility */
[data-theme="light"] .stats-badge {
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid rgba(0, 0, 0, 0.06);
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.04),
              0 8px 32px rgba(0, 0, 0, 0.06);
}

/* Dark theme glassmorphism */
[data-theme="dark"] .stats-badge {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
}

/* ============================================================================
   RESPONSIVE LAYOUT
   ============================================================================ */

@media (max-width: 767px) {
  .hero-section {
    padding: var(--space-4);
  }

  .hero-grid {
    gap: var(--space-3);
  }

  .stats-badge {
    width: 100%;
  }

  .countdown-ring {
    width: 56px;
    height: 56px;
  }

  .countdown-ring__days {
    font-size: var(--text-lg);
  }
}

@media (max-width: 480px) {
  .hero-section {
    padding: var(--space-4);
    border-radius: var(--radius-lg);
  }

  .hero-greeting__message {
    font-size: var(--text-lg);
  }
}

/* ============================================================================
   ACCESSIBILITY: REDUCED MOTION SUPPORT
   ============================================================================ */

@media (prefers-reduced-motion: reduce) {
  .hero-section {
    animation: none;
    opacity: 1;
  }

  .stats-badge:hover,
  .stats-badge:active {
    transform: none;
  }

  .week-day--today .week-day__icon {
    animation: none;
  }

  .countdown-ring__progress {
    transition: none;
  }

  .stats-badge::after {
    display: none;
  }
}