/* ========================================
   Game Intro Panel - WYRAZOHOLICY
   Clean, professional design. No emojis.
   ======================================== */

.game-intro-panel {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 10000;
    background: rgba(0, 0, 0, 0.85);
    backdrop-filter: blur(8px);
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 20px;
    transition: opacity 0.3s ease, transform 0.3s ease;
    -webkit-overflow-scrolling: touch;
}

.intro-content {
    background: var(--bg-card-gradient, linear-gradient(145deg, #1a1a1a, #262626));
    border: 1px solid var(--color-border, rgba(255, 255, 255, 0.08));
    border-radius: 20px;
    padding: 36px 28px;
    position: relative;
    max-width: 600px;
    width: 100%;
    max-height: 90vh;
    overflow-y: auto;
}

/* Decorative top accent line */
.intro-content::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--color-accent, #6366f1), #8b5cf6);
}

/* Header */
.intro-header {
    text-align: center;
    margin-bottom: 24px;
}

.intro-title {
    font-size: 2rem;
    font-weight: 900;
    letter-spacing: -0.02em;
    margin: 0 0 6px;
    color: var(--color-text-primary, #fff);
}

.intro-subtitle {
    font-size: 0.9rem;
    color: var(--color-text-muted, #94a3b8);
    margin: 0;
    font-weight: 500;
}

/* Description */
.intro-description {
    font-size: 0.9rem;
    line-height: 1.7;
    color: var(--color-text-secondary, #cbd5e1);
    text-align: center;
    margin: 0 auto 28px;
    max-width: 520px;
}

/* Sections */
.intro-section {
    margin-bottom: 24px;
}

.intro-section-title {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.12em;
    font-weight: 800;
    color: var(--color-accent, #6366f1);
    margin-bottom: 14px;
    padding-bottom: 8px;
    border-bottom: 1px solid var(--color-border, rgba(255, 255, 255, 0.06));
}

.section-icon {
    width: 14px;
    height: 14px;
}

/* How to Play Steps */
.intro-steps {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.intro-step {
    display: flex;
    align-items: flex-start;
    gap: 16px;
    padding: 14px 18px;
    background: var(--color-bg-tertiary, rgba(255, 255, 255, 0.03));
    border: 1px solid var(--color-border, rgba(255, 255, 255, 0.06));
    border-radius: 12px;
    transition: all 0.2s ease;
}

.intro-step:hover {
    border-color: rgba(99, 102, 241, 0.3);
    background: var(--color-bg-tertiary, rgba(255, 255, 255, 0.05));
    transform: translateX(4px);
}

.intro-step-indicators {
    display: flex;
    align-items: center;
    gap: 8px;
    flex-shrink: 0;
}

.intro-step-number {
    width: 26px;
    height: 26px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.85rem;
    font-weight: 800;
    color: #ffffff !important;
    background: var(--color-accent, #6366f1);
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
    flex-shrink: 0;
}

/* Colored game tiles */
.intro-step-tile {
    width: 24px;
    height: 24px;
    border-radius: 4px;
}

.intro-step-content {
    flex: 1;
}

.intro-tile-green {
    background: #538d4e;
}

.intro-tile-yellow {
    background: #b59f3b;
}

.intro-tile-gray {
    background: #3a3a3c;
}

[data-theme="light"] .intro-tile-gray {
    background: #787c7e;
}

[data-theme="light"] .intro-step-number {
    box-shadow: 0 2px 4px rgba(99, 102, 241, 0.2);
}

.intro-step-text {
    font-size: 0.9rem;
    color: var(--color-text-primary, #e2e8f0);
    margin: 0;
    font-weight: 600;
    line-height: 1.4;
}

.intro-step-detail {
    font-size: 0.8rem;
    color: var(--color-text-muted, #94a3b8);
    margin: 4px 0 0;
    line-height: 1.5;
}

/* Tips */
.intro-tips {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.intro-tips li {
    position: relative;
    padding: 10px 16px 10px 32px;
    font-size: 0.85rem;
    color: var(--color-text-secondary, #cbd5e1);
    line-height: 1.5;
    background: var(--color-bg-tertiary, rgba(255, 255, 255, 0.02));
    border-radius: 10px;
    border: 1px solid transparent;
    transition: all 0.2s;
}

.intro-tips li:hover {
    background: var(--color-bg-tertiary, rgba(255, 255, 255, 0.04));
    border-color: rgba(255, 255, 255, 0.05);
}

.intro-tips li::before {
    content: '';
    position: absolute;
    left: 14px;
    top: 18px;
    width: 6px;
    height: 6px;
    background: var(--color-accent, #6366f1);
    border-radius: 50%;
    box-shadow: 0 0 10px var(--color-accent, #6366f1);
}

/* Fun Fact */
.intro-fact {
    padding: 16px 20px;
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.08), rgba(99, 102, 241, 0.02));
    border: 1px solid rgba(99, 102, 241, 0.15);
    border-radius: 14px;
    margin-bottom: 32px;
    position: relative;
}

.intro-fact::after {
    content: '"';
    position: absolute;
    right: 20px;
    top: 10px;
    font-size: 3rem;
    font-family: serif;
    color: rgba(99, 102, 241, 0.1);
    line-height: 1;
}

/* Play Button */
.intro-play-btn {
    display: block;
    width: 100%;
    max-width: 280px;
    margin: 0 auto;
    padding: 14px 32px;
    font-size: 1rem;
    font-weight: 800;
    color: #fff;
    background: var(--color-accent, #6366f1);
    border: none;
    border-radius: 12px;
    cursor: pointer;
    transition: all 0.2s ease;
    letter-spacing: 0.02em;
}

.intro-play-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(99, 102, 241, 0.35);
    filter: brightness(1.1);
}

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

/* Remember Checkbox */
.intro-remember {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    margin-top: 16px;
    cursor: pointer;
    user-select: none;
}

.intro-remember input[type="checkbox"] {
    width: 14px;
    height: 14px;
    accent-color: var(--color-accent, #6366f1);
    cursor: pointer;
}

.intro-remember span {
    font-size: 0.72rem;
    color: var(--color-text-muted, #94a3b8);
    font-weight: 500;
}

/* Light mode */
[data-theme="light"] .intro-content {
    background: #fff;
    border-color: #e2e8f0;
}

[data-theme="light"] .intro-step {
    background: #f8fafc;
    border-color: #e2e8f0;
}

[data-theme="light"] .intro-tips li {
    background: #f8fafc;
}

[data-theme="light"] .intro-step-number {
    background: var(--color-accent, #6366f1);
}

/* Responsive */
@media (max-width: 480px) {
    .game-intro-panel {
        padding: 10px 12px 32px;
        margin-top: -3rem;
        /* Offset main padding from styles.css */
    }

    .intro-content {
        padding: 24px 16px;
        border-radius: 16px;
    }

    .intro-title {
        font-size: 1.5rem;
    }

    .intro-play-btn {
        padding: 12px 24px;
        font-size: 0.95rem;
    }
}