/* ============================================
   2026 Challenge Calendar - Space Theme
   ============================================ */

/* CSS Variables */
:root {
    --bg-deep-space: #0a0a1a;
    --bg-nebula: #0d0d2b;
    --tile-locked: #1a1a3a;
    --tile-locked-border: #2a2a4a;
    --tile-unlocked: #4a2c82;
    --tile-unlocked-glow: #7c3aed;
    --tile-opened: #fbbf24;
    --tile-opened-glow: #f59e0b;
    --cosmic-purple: #8b5cf6;
    --cosmic-blue: #3b82f6;
    --cosmic-pink: #ec4899;
    --cosmic-cyan: #06b6d4;
    --star-white: #ffffff;
    --text-primary: #f8fafc;
    --text-secondary: #94a3b8;
    
    /* Tile sizing */
    --tile-size: 60px;
    --tile-gap: 8px;
    --tile-radius: 8px;
}

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

html, body {
    width: 100%;
    height: 100%;
    overflow: hidden;
    touch-action: none;
    -webkit-touch-callout: none;
    -webkit-user-select: none;
    user-select: none;
}

body {
    font-family: 'SF Pro Display', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: var(--bg-deep-space);
    color: var(--text-primary);
}

/* Starfield Canvas */
#starfield {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
    pointer-events: none;
}

/* Main App Container */
#app {
    position: relative;
    width: 100%;
    height: 100%;
    z-index: 1;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* Viewport for zoom/pan */
#viewport {
    width: 100%;
    height: 100%;
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: grab;
}

#viewport:active {
    cursor: grabbing;
}

#viewport.zooming {
    cursor: zoom-in;
}

/* Pixel Grid Container */
#pixel-grid {
    display: grid;
    gap: var(--tile-gap);
    transform-origin: center center;
    transition: transform 0.3s ease-out;
    padding: 40px;
}

/* Individual Pixel Tile */
.pixel-tile {
    width: var(--tile-size);
    height: var(--tile-size);
    border-radius: var(--tile-radius);
    position: relative;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 14px;
}

/* Locked Tile State */
.pixel-tile.locked {
    background: linear-gradient(145deg, var(--tile-locked) 0%, #12122a 100%);
    border: 2px solid var(--tile-locked-border);
    box-shadow: 
        0 4px 15px rgba(0, 0, 0, 0.4),
        inset 0 1px 0 rgba(255, 255, 255, 0.05);
    color: var(--text-secondary);
    opacity: 0.7;
}

.pixel-tile.locked::after {
    content: '🔒';
    font-size: 18px;
    opacity: 0.6;
}

.pixel-tile.locked:hover {
    transform: scale(1.02);
    opacity: 0.85;
}

.pixel-tile.locked:active {
    animation: shake 0.5s ease-in-out;
}

/* Unlocked Tile State */
.pixel-tile.unlocked {
    background: linear-gradient(145deg, var(--tile-unlocked) 0%, #3a1c62 100%);
    border: 2px solid var(--tile-unlocked-glow);
    box-shadow: 
        0 0 20px rgba(124, 58, 237, 0.4),
        0 0 40px rgba(124, 58, 237, 0.2),
        0 4px 15px rgba(0, 0, 0, 0.3),
        inset 0 1px 0 rgba(255, 255, 255, 0.1);
    color: var(--text-primary);
    animation: pulse-glow 3s ease-in-out infinite;
}

.pixel-tile.unlocked .week-num {
    font-size: 16px;
    font-weight: 800;
    text-shadow: 0 0 10px rgba(255, 255, 255, 0.5);
}

.pixel-tile.unlocked:hover {
    transform: scale(1.08) translateY(-2px);
    box-shadow: 
        0 0 30px rgba(124, 58, 237, 0.6),
        0 0 60px rgba(124, 58, 237, 0.3),
        0 8px 25px rgba(0, 0, 0, 0.4);
}

.pixel-tile.unlocked:active {
    transform: scale(0.98);
}

/* Opened/Completed Tile State */
.pixel-tile.opened {
    background: linear-gradient(145deg, var(--tile-opened) 0%, #d97706 100%);
    border: 2px solid var(--tile-opened-glow);
    box-shadow: 
        0 0 20px rgba(251, 191, 36, 0.4),
        0 0 40px rgba(251, 191, 36, 0.2),
        0 4px 15px rgba(0, 0, 0, 0.3);
    color: #1a1a1a;
}

.pixel-tile.opened .week-num {
    font-size: 16px;
    font-weight: 800;
}

.pixel-tile.opened::before {
    content: '✓';
    position: absolute;
    top: 4px;
    right: 6px;
    font-size: 12px;
    color: #1a1a1a;
    font-weight: 900;
}

.pixel-tile.opened:hover {
    transform: scale(1.05);
}

/* Pulsing glow animation */
@keyframes pulse-glow {
    0%, 100% {
        box-shadow: 
            0 0 20px rgba(124, 58, 237, 0.4),
            0 0 40px rgba(124, 58, 237, 0.2),
            0 4px 15px rgba(0, 0, 0, 0.3),
            inset 0 1px 0 rgba(255, 255, 255, 0.1);
    }
    50% {
        box-shadow: 
            0 0 30px rgba(124, 58, 237, 0.6),
            0 0 60px rgba(124, 58, 237, 0.3),
            0 4px 15px rgba(0, 0, 0, 0.3),
            inset 0 1px 0 rgba(255, 255, 255, 0.1);
    }
}

/* Shake animation for locked tiles */
@keyframes shake {
    0%, 100% { transform: translateX(0); }
    10%, 30%, 50%, 70%, 90% { transform: translateX(-5px); }
    20%, 40%, 60%, 80% { transform: translateX(5px); }
}

/* Week Indicator (shows when zoomed in) */
#week-indicator {
    position: fixed;
    top: 20px;
    left: 50%;
    transform: translateX(-50%);
    background: rgba(10, 10, 26, 0.9);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(124, 58, 237, 0.3);
    border-radius: 20px;
    padding: 10px 20px;
    display: flex;
    gap: 12px;
    align-items: center;
    z-index: 100;
    transition: opacity 0.3s, transform 0.3s;
}

#week-indicator.hidden {
    opacity: 0;
    transform: translateX(-50%) translateY(-20px);
    pointer-events: none;
}

#week-number {
    font-weight: 700;
    color: var(--cosmic-purple);
}

#week-date {
    color: var(--text-secondary);
    font-size: 14px;
}

/* Modal Overlay */
#modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(10, 10, 26, 0.95);
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 1;
    transition: opacity 0.3s ease;
}

#modal-overlay.hidden {
    opacity: 0;
    pointer-events: none;
}

/* 3D Cube Container */
#cube-container {
    perspective: 1000px;
    width: 200px;
    height: 200px;
}

#cube {
    width: 100%;
    height: 100%;
    position: relative;
    transform-style: preserve-3d;
    transform: translateZ(-100px) rotateX(0deg) rotateY(0deg);
    transition: transform 1.5s ease-in-out;
}

#cube.spinning {
    animation: cube-spin 1.5s ease-in-out forwards;
}

#cube.opening {
    animation: cube-open 1s ease-in-out forwards;
}

@keyframes cube-spin {
    0% {
        transform: translateZ(-100px) rotateX(0deg) rotateY(0deg) scale(0.5);
    }
    50% {
        transform: translateZ(-100px) rotateX(180deg) rotateY(180deg) scale(1.2);
    }
    100% {
        transform: translateZ(-100px) rotateX(360deg) rotateY(360deg) scale(1);
    }
}

@keyframes cube-open {
    0% {
        transform: translateZ(-100px) rotateX(0deg) rotateY(0deg) scale(1);
    }
    100% {
        transform: translateZ(-100px) rotateX(0deg) rotateY(0deg) scale(0);
        opacity: 0;
    }
}

.cube-face {
    position: absolute;
    width: 200px;
    height: 200px;
    border: 3px solid var(--cosmic-purple);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    font-weight: 700;
    backface-visibility: visible;
}

.cube-face.front {
    background: linear-gradient(145deg, var(--tile-unlocked) 0%, #3a1c62 100%);
    transform: rotateY(0deg) translateZ(100px);
}

.cube-face.back {
    background: linear-gradient(145deg, #2a1c52 0%, #1a0c42 100%);
    transform: rotateY(180deg) translateZ(100px);
}

.cube-face.right {
    background: linear-gradient(145deg, #3a2c72 0%, #2a1c52 100%);
    transform: rotateY(90deg) translateZ(100px);
}

.cube-face.left {
    background: linear-gradient(145deg, #3a2c72 0%, #2a1c52 100%);
    transform: rotateY(-90deg) translateZ(100px);
}

.cube-face.top {
    background: linear-gradient(145deg, #4a3c82 0%, #3a2c72 100%);
    transform: rotateX(90deg) translateZ(100px);
}

.cube-face.bottom {
    background: linear-gradient(145deg, #1a0c32 0%, #0a0022 100%);
    transform: rotateX(-90deg) translateZ(100px);
}

.week-badge {
    background: rgba(0, 0, 0, 0.3);
    padding: 15px 30px;
    border-radius: 10px;
    color: white;
    text-shadow: 0 0 20px rgba(255, 255, 255, 0.5);
}

/* Challenge Content Card */
#challenge-content {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 90%;
    max-width: 400px;
    opacity: 1;
    transition: opacity 0.5s ease;
}

#challenge-content.hidden {
    opacity: 0;
    pointer-events: none;
}

.challenge-card {
    background: linear-gradient(145deg, rgba(74, 44, 130, 0.95) 0%, rgba(30, 20, 60, 0.98) 100%);
    border: 2px solid var(--cosmic-purple);
    border-radius: 20px;
    padding: 30px;
    box-shadow: 
        0 0 40px rgba(124, 58, 237, 0.4),
        0 20px 60px rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(10px);
    animation: card-appear 0.5s ease-out;
}

@keyframes card-appear {
    from {
        transform: scale(0.8);
        opacity: 0;
    }
    to {
        transform: scale(1);
        opacity: 1;
    }
}

.challenge-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
    padding-bottom: 15px;
    border-bottom: 1px solid rgba(124, 58, 237, 0.3);
}

.challenge-week {
    font-size: 20px;
    font-weight: 800;
    color: var(--cosmic-purple);
    background: rgba(124, 58, 237, 0.2);
    padding: 8px 16px;
    border-radius: 20px;
}

.challenge-date {
    color: var(--text-secondary);
    font-size: 14px;
}

.challenge-text {
    font-size: 22px;
    line-height: 1.5;
    color: var(--text-primary);
    text-align: center;
    padding: 20px 0;
    min-height: 100px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.close-btn {
    width: 100%;
    padding: 16px;
    margin-top: 20px;
    background: linear-gradient(145deg, var(--tile-opened) 0%, #d97706 100%);
    border: none;
    border-radius: 12px;
    color: #1a1a1a;
    font-size: 18px;
    font-weight: 700;
    cursor: pointer;
    transition: transform 0.2s, box-shadow 0.2s;
}

.close-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(251, 191, 36, 0.4);
}

.close-btn:active {
    transform: translateY(0);
}

/* Confetti Canvas */
#confetti-canvas {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 2000;
}

/* Locked Toast Message */
#locked-toast {
    position: fixed;
    bottom: 40px;
    left: 50%;
    transform: translateX(-50%);
    background: rgba(26, 26, 58, 0.95);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 16px;
    padding: 16px 24px;
    display: flex;
    align-items: center;
    gap: 12px;
    z-index: 500;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.4);
    animation: toast-appear 0.3s ease-out;
}

#locked-toast.hidden {
    opacity: 0;
    transform: translateX(-50%) translateY(20px);
    pointer-events: none;
    transition: opacity 0.3s, transform 0.3s;
}

@keyframes toast-appear {
    from {
        opacity: 0;
        transform: translateX(-50%) translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateX(-50%) translateY(0);
    }
}

.lock-icon {
    font-size: 24px;
}

#locked-message {
    color: var(--text-primary);
    font-size: 16px;
}

/* Zoom Controls (optional - for accessibility) */
.zoom-controls {
    position: fixed;
    bottom: 20px;
    right: 20px;
    display: flex;
    flex-direction: column;
    gap: 10px;
    z-index: 100;
}

.zoom-btn {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    border: 2px solid var(--cosmic-purple);
    background: rgba(10, 10, 26, 0.9);
    color: var(--text-primary);
    font-size: 24px;
    cursor: pointer;
    transition: all 0.2s;
}

.zoom-btn:hover {
    background: var(--cosmic-purple);
}

/* Loading State */
.loading {
    display: flex;
    align-items: center;
    justify-content: center;
    height: 100vh;
    font-size: 24px;
    color: var(--cosmic-purple);
}

.loading::after {
    content: '';
    width: 40px;
    height: 40px;
    margin-left: 20px;
    border: 4px solid rgba(124, 58, 237, 0.3);
    border-top-color: var(--cosmic-purple);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* Responsive adjustments */
@media (max-width: 768px) {
    :root {
        --tile-size: 45px;
        --tile-gap: 6px;
    }
    
    .challenge-card {
        padding: 20px;
    }
    
    .challenge-text {
        font-size: 18px;
    }
}

@media (max-width: 480px) {
    :root {
        --tile-size: 38px;
        --tile-gap: 5px;
    }
}

/* iPad specific */
@media (min-width: 768px) and (max-width: 1024px) {
    :root {
        --tile-size: 55px;
        --tile-gap: 7px;
    }
}

/* High contrast for accessibility */
@media (prefers-contrast: high) {
    .pixel-tile.locked {
        border-width: 3px;
    }
    
    .pixel-tile.unlocked {
        border-width: 3px;
    }
}

/* Reduce motion for accessibility */
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}