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

:root {
    --bg-primary: #111318;
    --bg-secondary: #1a1d24;
    --bg-card: #22262e;
    --text-primary: #e4e4e7;
    --text-secondary: #9ca3af;
    --accent: #c9a96e;
    --accent-dim: rgba(201, 169, 110, 0.15);
    --accent-glow: rgba(201, 169, 110, 0.25);
    --border: #2e3239;
    --card-width: 180px;
    --card-height: 315px;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    min-height: 100vh;
    line-height: 1.6;
}

/* === Layout === */
.container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 2rem 1.5rem;
}

.phase {
    display: none;
    animation: fadeIn 0.5s ease;
}

.phase.active {
    display: block;
}

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

/* === Typography === */
.title {
    font-size: 1.8rem;
    text-align: center;
    color: var(--accent);
    margin-bottom: 0.4rem;
    font-weight: 600;
    letter-spacing: -0.02em;
}

.subtitle {
    text-align: center;
    color: var(--text-secondary);
    margin-bottom: 2rem;
    font-size: 0.95rem;
}

/* === Form Styles === */
.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.4rem;
    color: var(--text-primary);
    font-size: 0.9rem;
    font-weight: 500;
}

.form-group input[type="text"],
.form-group textarea,
.form-group select {
    width: 100%;
    padding: 0.7rem 0.9rem;
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: 8px;
    color: var(--text-primary);
    font-family: inherit;
    font-size: 0.95rem;
    transition: border-color 0.2s, box-shadow 0.2s;
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 3px var(--accent-dim);
}

.hint {
    font-size: 0.82rem;
    color: var(--text-secondary);
    margin-top: 0.3rem;
}

/* === Deck Selector === */
.deck-selector {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
}

.deck-option {
    display: flex;
    flex-direction: column;
    align-items: center;
    cursor: pointer;
    padding: 0.75rem;
    border: 2px solid var(--border);
    border-radius: 10px;
    transition: all 0.2s;
}

.deck-option:hover {
    border-color: var(--text-secondary);
}

.deck-option input[type="radio"] {
    display: none;
}

.deck-option input[type="radio"]:checked ~ .deck-preview {
    border-color: var(--accent);
    box-shadow: 0 0 12px var(--accent-glow);
}

.deck-option input[type="radio"]:checked ~ .deck-label {
    color: var(--accent);
}

.deck-preview {
    width: 70px;
    height: 115px;
    border-radius: 6px;
    border: 2px solid var(--border);
    margin-bottom: 0.5rem;
    transition: all 0.2s;
}

.deck-preview.soviet {
    background: linear-gradient(135deg, #6b1a1a, #b83030);
}

.deck-preview.mucha {
    background: linear-gradient(135deg, #7a5a20, #c9a060);
}

.deck-label {
    font-size: 0.8rem;
    color: var(--text-secondary);
}

/* === Buttons === */
.btn-primary, .btn-secondary {
    display: block;
    width: 100%;
    max-width: 280px;
    margin: 2rem auto 0;
    padding: 0.85rem 1.5rem;
    border: none;
    border-radius: 8px;
    font-family: inherit;
    font-size: 1rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s;
}

.btn-primary {
    background: var(--accent);
    color: var(--bg-primary);
}

.btn-primary:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 16px var(--accent-glow);
}

.btn-secondary {
    background: transparent;
    color: var(--accent);
    border: 1px solid var(--accent);
}

.btn-secondary:hover {
    background: var(--accent-dim);
}

/* === Entropy Pad === */
#entropy-pad {
    width: 320px;
    height: 320px;
    margin: 0 auto;
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: 50%;
    position: relative;
    overflow: hidden;
    cursor: crosshair;
    touch-action: none;
}

#entropy-canvas {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    border-radius: 50%;
}

#entropy-progress-container {
    position: absolute;
    bottom: 20px;
    left: 50%;
    transform: translateX(-50%);
    width: 60%;
    height: 4px;
    background: rgba(255,255,255,0.06);
    border-radius: 2px;
    overflow: hidden;
}

#entropy-progress-bar {
    height: 100%;
    width: 0%;
    background: var(--accent);
    border-radius: 2px;
    transition: width 0.1s;
}

#entropy-instruction {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    color: var(--text-secondary);
    font-size: 0.9rem;
    text-align: center;
    pointer-events: none;
    z-index: 1;
    text-shadow: 0 0 10px var(--bg-primary), 0 0 20px var(--bg-primary);
}

#entropy-stats {
    text-align: center;
    margin-top: 0.75rem;
    color: var(--text-secondary);
    font-size: 0.85rem;
}

/* === Card Spread === */
#card-spread {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 2.5rem 1.2rem;
    padding: 2rem 0;
    min-height: 300px;
}

.card-slot {
    width: var(--card-width);
    height: var(--card-height);
    perspective: 800px;
    position: relative;
    flex-shrink: 0;
    margin-bottom: 1.5rem;
    cursor: pointer;
}

.card-inner {
    width: 100%;
    height: 100%;
    position: relative;
    transform-style: preserve-3d;
    transition: transform 0.8s ease;
}

.card-slot.revealed .card-inner {
    transform: rotateY(180deg);
}

.card-front, .card-back {
    position: absolute;
    width: 100%;
    height: 100%;
    backface-visibility: hidden;
    border-radius: 8px;
    overflow: hidden;
    border: 1px solid var(--border);
}

.card-back {
    background: var(--bg-card);
    display: flex;
    align-items: center;
    justify-content: center;
}

.card-back::after {
    content: '✦';
    font-size: 1.5rem;
    color: var(--accent);
    opacity: 0.5;
}

.card-front {
    transform: rotateY(180deg);
    background: var(--bg-secondary);
}

.card-front img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center;
    display: block;
}

.card-slot.reversed .card-front {
    transform: rotateY(180deg) rotate(180deg);
}

.card-label {
    position: absolute;
    bottom: -1.8rem;
    left: -0.5rem;
    right: -0.5rem;
    text-align: center;
    font-size: 0.72rem;
    color: var(--text-secondary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.card-position-label {
    position: absolute;
    top: -1.6rem;
    left: -0.5rem;
    right: -0.5rem;
    text-align: center;
    font-size: 0.68rem;
    color: var(--accent);
    font-weight: 500;
    white-space: nowrap;
}

/* === Reading Output (inline below cards) === */
#reading-section {
    margin-top: 2rem;
    display: none;
}

#reading-section.visible {
    display: block;
}

#reading-header {
    text-align: center;
    margin-bottom: 1rem;
}

#reader-name {
    font-size: 1.3rem;
    color: var(--accent);
    font-weight: 600;
}

#reading-content {
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: 10px;
    padding: 1.5rem 2rem;
    min-height: 100px;
}

#reading-text {
    line-height: 1.8;
    display: none;
    font-size: 0.95rem;
}

#reading-text.visible {
    display: block;
}

#reading-text p {
    margin-bottom: 0.8rem;
}

#reading-text h3, #reading-text h4 {
    color: var(--accent);
    margin: 1.2rem 0 0.4rem;
    font-size: 1.05rem;
}

#reading-text strong {
    color: var(--text-primary);
}

#reading-text em {
    color: var(--text-secondary);
    font-style: italic;
}

#reading-loading {
    text-align: center;
    padding: 1.5rem;
}

#reading-loading.hidden {
    display: none;
}

.spinner {
    width: 32px;
    height: 32px;
    border: 2px solid var(--border);
    border-top-color: var(--accent);
    border-radius: 50%;
    margin: 0 auto 0.75rem;
    animation: spin 1s linear infinite;
}

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

/* === Card Zoom Overlay === */
.card-zoom-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.85);
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.card-zoom-overlay.visible {
    opacity: 1;
}

.card-zoom-overlay img {
    max-height: 85vh;
    max-width: 90vw;
    border-radius: 10px;
    box-shadow: 0 0 40px rgba(0, 0, 0, 0.6);
    transform: scale(0.8);
    transition: transform 0.35s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.card-zoom-overlay.visible img {
    transform: scale(1);
}

.card-zoom-overlay .zoom-label {
    position: absolute;
    bottom: 2rem;
    left: 0;
    right: 0;
    text-align: center;
    color: var(--text-secondary);
    font-size: 0.9rem;
}

/* === Responsive === */
@media (max-width: 600px) {
    :root {
        --card-width: 130px;
        --card-height: 228px;
    }

    .title {
        font-size: 1.4rem;
    }

    #entropy-pad {
        height: 180px;
    }

    .deck-preview {
        width: 55px;
        height: 90px;
    }

    #reading-content {
        padding: 1rem 1.2rem;
    }
}