/* =============================================
   Fiendish Puzzle Gen — Shared Design System
   ============================================= */

/* ---- Google Fonts Import ---- */
@import url('https://fonts.googleapis.com/css2?family=Space+Grotesk:wght@400;500;600;700&family=Space+Mono:wght@400;700&family=Creepster&display=swap');

/* ---- Design Tokens ---- */
:root {
    /* Backgrounds */
    --bg-deep: #07070d;
    --bg-base: #0b0b14;
    --bg-surface: #111119;
    --bg-elevated: #191924;
    --bg-card: rgba(20, 20, 32, 0.7);
    --bg-card-hover: rgba(28, 28, 44, 0.85);

    /* Accent Palette */
    --accent-primary: #e63946;
    --accent-primary-dim: rgba(230, 57, 70, 0.15);
    --accent-primary-glow: rgba(230, 57, 70, 0.3);
    --accent-secondary: #8b5cf6;
    --accent-secondary-dim: rgba(139, 92, 246, 0.15);
    --accent-tertiary: #f59e0b;
    --accent-success: #10b981;
    --accent-success-dim: rgba(16, 185, 129, 0.15);

    /* Gradients */
    --gradient-fiendish: linear-gradient(135deg, #e63946, #8b5cf6);
    --gradient-fire: linear-gradient(135deg, #e63946, #f59e0b);
    --gradient-card: linear-gradient(160deg, rgba(255,255,255,0.04) 0%, rgba(255,255,255,0) 100%);

    /* Text */
    --text-primary: #ededf0;
    --text-secondary: #9898a8;
    --text-muted: #5a5a6e;
    --text-accent: #e63946;

    /* Borders */
    --border-subtle: rgba(255, 255, 255, 0.06);
    --border-default: rgba(255, 255, 255, 0.08);
    --border-hover: rgba(255, 255, 255, 0.14);
    --border-accent: rgba(230, 57, 70, 0.3);

    /* Radius */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 20px;
    --radius-2xl: 24px;

    /* Shadows */
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 16px 48px rgba(0, 0, 0, 0.5);
    --shadow-glow: 0 0 40px rgba(230, 57, 70, 0.1);

    /* Typography */
    --font-sans: 'Space Grotesk', system-ui, -apple-system, sans-serif;
    --font-mono: 'Space Mono', 'Fira Code', monospace;
    --font-display: 'Creepster', cursive;

    /* Spacing */
    --space-xs: 4px;
    --space-sm: 8px;
    --space-md: 16px;
    --space-lg: 24px;
    --space-xl: 32px;
    --space-2xl: 48px;
    --space-3xl: 64px;

    /* Transitions */
    --ease-out: cubic-bezier(0.22, 1, 0.36, 1);
    --ease-spring: cubic-bezier(0.34, 1.56, 0.64, 1);
    --duration-fast: 150ms;
    --duration-normal: 250ms;
    --duration-slow: 400ms;
}

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

html {
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-sans);
    background: var(--bg-deep);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
    overflow-x: hidden;
}

/* ---- Animated Background ---- */
.bg-pattern {
    position: fixed;
    inset: 0;
    z-index: 0;
    pointer-events: none;
    overflow: hidden;
}

.bg-pattern::before {
    content: '';
    position: absolute;
    inset: -50%;
    background-image:
        radial-gradient(circle at 20% 30%, var(--accent-primary-dim) 0%, transparent 50%),
        radial-gradient(circle at 80% 70%, var(--accent-secondary-dim) 0%, transparent 50%);
    animation: bgShift 20s ease-in-out infinite alternate;
}

.bg-pattern::after {
    content: '';
    position: absolute;
    inset: 0;
    background-image: 
        linear-gradient(rgba(255,255,255,0.02) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255,255,255,0.02) 1px, transparent 1px);
    background-size: 60px 60px;
    mask-image: radial-gradient(ellipse at center, black 30%, transparent 70%);
    -webkit-mask-image: radial-gradient(ellipse at center, black 30%, transparent 70%);
}

@keyframes bgShift {
    0% { transform: translate(0, 0) scale(1); }
    100% { transform: translate(-5%, 5%) scale(1.1); }
}

/* ---- Layout ---- */
.app-container {
    position: relative;
    z-index: 1;
    max-width: 1200px;
    margin: 0 auto;
    padding: var(--space-lg);
    min-height: 100vh;
}

/* ---- Shared Header ---- */
.site-header {
    padding: var(--space-xl) 0 var(--space-2xl);
    text-align: center;
}

.logo-group {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-md);
    margin-bottom: var(--space-sm);
}

.logo-icon {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--gradient-fiendish);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-glow);
    animation: logoPulse 3s ease-in-out infinite;
    flex-shrink: 0;
}

.logo-icon svg {
    filter: drop-shadow(0 0 4px rgba(255,255,255,0.3));
}

@keyframes logoPulse {
    0%, 100% { box-shadow: 0 0 20px rgba(230, 57, 70, 0.2); }
    50% { box-shadow: 0 0 40px rgba(230, 57, 70, 0.4), 0 0 60px rgba(139, 92, 246, 0.2); }
}

.site-title {
    font-family: var(--font-display);
    font-size: clamp(2rem, 6vw, 3.5rem);
    font-weight: 400;
    letter-spacing: 2px;
    background: var(--gradient-fiendish);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1.2;
}

.site-subtitle {
    color: var(--text-secondary);
    font-size: 1rem;
    font-weight: 400;
    margin-top: var(--space-xs);
    letter-spacing: 0.5px;
}

/* ---- Navigation / Back Link ---- */
.nav-back {
    display: inline-flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-sm) var(--space-md);
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.875rem;
    font-weight: 500;
    border-radius: var(--radius-sm);
    transition: all var(--duration-normal) var(--ease-out);
    margin-bottom: var(--space-lg);
}

.nav-back:hover {
    color: var(--text-primary);
    background: rgba(255, 255, 255, 0.05);
}

.nav-back svg {
    transition: transform var(--duration-normal) var(--ease-out);
}

.nav-back:hover svg {
    transform: translateX(-3px);
}

/* ---- Card System ---- */
.card {
    background: var(--bg-card);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-xl);
    padding: var(--space-xl);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    background-image: var(--gradient-card);
    transition: all var(--duration-normal) var(--ease-out);
}

.card:hover {
    background: var(--bg-card-hover);
    border-color: var(--border-hover);
    box-shadow: var(--shadow-md);
}

/* ---- Button System ---- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
    padding: 10px 20px;
    font-family: var(--font-sans);
    font-size: 0.875rem;
    font-weight: 600;
    line-height: 1;
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--duration-normal) var(--ease-out);
    text-decoration: none;
    white-space: nowrap;
    user-select: none;
}

.btn:disabled {
    opacity: 0.4;
    cursor: not-allowed;
}

.btn-primary {
    background: var(--gradient-fiendish);
    color: #fff;
    box-shadow: 0 4px 16px rgba(230, 57, 70, 0.25);
}

.btn-primary:hover:not(:disabled) {
    box-shadow: 0 6px 24px rgba(230, 57, 70, 0.4);
    transform: translateY(-1px);
}

.btn-primary:active:not(:disabled) {
    transform: translateY(0);
}

.btn-secondary {
    background: var(--bg-elevated);
    color: var(--text-primary);
    border: 1px solid var(--border-default);
}

.btn-secondary:hover:not(:disabled) {
    border-color: var(--border-hover);
    background: var(--bg-card-hover);
}

.btn-ghost {
    background: transparent;
    color: var(--text-secondary);
    padding: 10px 16px;
}

.btn-ghost:hover:not(:disabled) {
    color: var(--text-primary);
    background: rgba(255, 255, 255, 0.05);
}

/* ---- Form Elements ---- */
.form-input,
.form-select {
    width: 100%;
    padding: 10px 14px;
    font-family: var(--font-sans);
    font-size: 0.9rem;
    color: var(--text-primary);
    background: var(--bg-surface);
    border: 1px solid var(--border-default);
    border-radius: var(--radius-md);
    outline: none;
    transition: all var(--duration-normal) var(--ease-out);
}

.form-input:focus,
.form-select:focus {
    border-color: var(--accent-primary);
    box-shadow: 0 0 0 3px var(--accent-primary-dim);
}

.form-input::placeholder {
    color: var(--text-muted);
}

.form-select {
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg width='12' height='8' viewBox='0 0 12 8' fill='none' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M1 1.5L6 6.5L11 1.5' stroke='%235a5a6e' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 12px center;
    padding-right: 36px;
    cursor: pointer;
}

.form-label {
    display: block;
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.8px;
    margin-bottom: var(--space-sm);
}

/* ---- Toggle Switch ---- */
.toggle-switch {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    cursor: pointer;
    user-select: none;
}

.toggle-switch input {
    display: none;
}

.toggle-track {
    position: relative;
    width: 44px;
    height: 24px;
    background: var(--bg-surface);
    border: 1px solid var(--border-default);
    border-radius: 12px;
    transition: all var(--duration-normal) var(--ease-out);
    flex-shrink: 0;
}

.toggle-thumb {
    position: absolute;
    top: 2px;
    left: 2px;
    width: 18px;
    height: 18px;
    background: var(--text-muted);
    border-radius: 50%;
    transition: all var(--duration-normal) var(--ease-spring);
}

.toggle-switch input:checked + .toggle-track {
    background: var(--accent-primary-dim);
    border-color: var(--accent-primary);
}

.toggle-switch input:checked + .toggle-track .toggle-thumb {
    left: 22px;
    background: var(--accent-primary);
}

.toggle-label {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.toggle-title {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--text-primary);
}

.toggle-desc {
    font-size: 0.78rem;
    color: var(--text-muted);
}

.toggle-desc code {
    font-family: var(--font-mono);
    font-size: 0.72rem;
    color: var(--accent-primary);
    background: var(--accent-primary-dim);
    padding: 1px 5px;
    border-radius: 4px;
}

/* ---- Status Badges ---- */
.badge {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 3px 10px;
    font-size: 0.7rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.8px;
    border-radius: 20px;
}

.badge-ready {
    background: var(--accent-success-dim);
    color: var(--accent-success);
    border: 1px solid rgba(16, 185, 129, 0.2);
}

.badge-coming {
    background: rgba(245, 158, 11, 0.1);
    color: var(--accent-tertiary);
    border: 1px solid rgba(245, 158, 11, 0.2);
}

.badge-dot {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: currentColor;
}

.badge-ready .badge-dot {
    animation: dotPulse 2s ease-in-out infinite;
}

@keyframes dotPulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.4; }
}

/* ---- Shared Footer ---- */
.site-footer {
    text-align: center;
    padding: var(--space-3xl) 0 var(--space-xl);
    color: var(--text-muted);
    font-size: 0.8rem;
}

.site-footer .phase-label {
    display: inline-flex;
    align-items: center;
    gap: var(--space-sm);
    padding: 6px 16px;
    background: var(--bg-elevated);
    border: 1px solid var(--border-subtle);
    border-radius: 20px;
    font-family: var(--font-mono);
    font-size: 0.72rem;
    letter-spacing: 1px;
    text-transform: uppercase;
}

/* ---- Utility: Shake Animation ---- */
.shake {
    animation: shake 0.4s var(--ease-out);
}

@keyframes shake {
    0%, 100% { transform: translateX(0); }
    20% { transform: translateX(-6px); }
    40% { transform: translateX(6px); }
    60% { transform: translateX(-4px); }
    80% { transform: translateX(4px); }
}

/* ---- Utility: Fade In ---- */
.fade-in {
    animation: fadeIn 0.5s var(--ease-out) both;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(12px); }
    to { opacity: 1; transform: translateY(0); }
}

/* ---- Responsive ---- */
@media (max-width: 768px) {
    .app-container {
        padding: var(--space-md);
    }

    .site-title {
        font-size: clamp(1.8rem, 8vw, 2.5rem);
    }
}

/* ---- Print Base ---- */
@media print {
    .no-print {
        display: none !important;
    }

    .print-only {
        display: block !important;
    }

    body {
        background: #fff;
        color: #000;
    }

    .bg-pattern {
        display: none;
    }
}

.print-only {
    display: none;
}