/* ================================================
   Claude Code Spire - Main Styles
   Fantasy Theme inspired by Slay the Spire
   ================================================ */

/* Google Fonts - Fantasy Typography */
@import url('https://fonts.googleapis.com/css2?family=Cinzel:wght@400;600;700&family=Crimson+Text:ital,wght@0,400;0,600;1,400&display=swap');

/* CSS Custom Properties */
:root {
    /* Colors - Warm Fantasy Theme */
    --bg-primary: #1a1410;
    --bg-secondary: #2a2018;
    --bg-tertiary: #3d2e1f;
    --bg-card: #342617;
    --bg-hover: #4a3828;

    /* Parchment tones */
    --parchment-light: #f4e4bc;
    --parchment-mid: #d9c59a;
    --parchment-dark: #b8a070;
    --parchment-shadow: #8b7355;

    /* Text Colors - warm tones for parchment readability */
    --text-primary: #f5efe0;
    --text-secondary: #d4c8a8;
    --text-muted: #9a8b70;
    --text-dark: #2a1f14;

    /* Difficulty Colors - fantasy palette */
    --color-beginner: #5a9e3e;      /* Forest green */
    --color-beginner-glow: rgba(90, 158, 62, 0.5);
    --color-beginner-dim: rgba(90, 158, 62, 0.2);
    --color-beginner-bright: #7bc95a;

    --color-intermediate: #c9a227;   /* Gold */
    --color-intermediate-glow: rgba(201, 162, 39, 0.5);
    --color-intermediate-dim: rgba(201, 162, 39, 0.2);
    --color-intermediate-bright: #e8c547;

    --color-advanced: #c45c3e;       /* Burnt orange/red */
    --color-advanced-glow: rgba(196, 92, 62, 0.5);
    --color-advanced-dim: rgba(196, 92, 62, 0.2);
    --color-advanced-bright: #e87a5a;

    --color-expert: #8b2a2a;         /* Blood red */
    --color-expert-glow: rgba(139, 42, 42, 0.5);
    --color-expert-dim: rgba(139, 42, 42, 0.2);
    --color-expert-bright: #b84040;

    /* Status Colors */
    --color-completed: #5a9e3e;
    --color-available: #c9a227;
    --color-locked: #5c4d3d;
    --color-locked-text: #7a6b55;
    --color-skipped: #8a7a60;

    /* Wood/Leather UI tones */
    --wood-light: #8b6914;
    --wood-mid: #6b4d0f;
    --wood-dark: #4a350a;
    --leather-brown: #5c4033;

    /* UI Elements */
    --border-color: #5c4d3d;
    --border-subtle: #3d2e1f;
    --shadow-color: rgba(0, 0, 0, 0.6);
    --modal-backdrop: rgba(10, 8, 5, 0.9);

    /* Accent */
    --accent-gold: #d4a017;
    --accent-red: #8b0000;

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

    /* Typography */
    --font-display: 'Cinzel', 'Palatino Linotype', 'Book Antiqua', serif;
    --font-body: 'Crimson Text', 'Georgia', serif;
    --font-mono: 'Courier New', 'Consolas', monospace;

    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-normal: 250ms ease;
    --transition-slow: 400ms ease;

    /* Border Radius - less rounded for fantasy feel */
    --radius-sm: 2px;
    --radius-md: 4px;
    --radius-lg: 6px;
    --radius-xl: 8px;
    --radius-full: 9999px;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-body);
    background: var(--bg-primary);
    color: var(--text-primary);
    min-height: 100vh;
    overflow-x: hidden;
    line-height: 1.7;
    font-size: 16px;

    /* Layered parchment textures for depth and variety */
    background-image:
        radial-gradient(ellipse at center, transparent 0%, rgba(10, 8, 5, 0.7) 100%),
        url('../assets/textures/parchmentCrinkled.png'),
        url('../assets/textures/parchmentAncient.png');
    background-color: var(--parchment-dark);
    background-blend-mode: multiply, overlay, multiply;
    background-size: auto, 150% 150%, auto;
    background-position: center, 30% 20%, center;
}

/* Grain overlay for texture */
body::after {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 9999;
    background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)'/%3E%3C/svg%3E");
    opacity: 0.04;
    mix-blend-mode: overlay;
}

/* ================================================
   Header
   ================================================ */
.spire-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-md) var(--spacing-xl);
    background: linear-gradient(180deg, var(--bg-secondary) 0%, var(--bg-primary) 100%);
    border-bottom: 3px solid var(--wood-dark);
    position: sticky;
    top: 0;
    z-index: 200;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.5);
}

/* Wood grain border effect */
.spire-header::after {
    content: '';
    position: absolute;
    bottom: -3px;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg,
        var(--wood-dark) 0%,
        var(--wood-light) 25%,
        var(--wood-mid) 50%,
        var(--wood-light) 75%,
        var(--wood-dark) 100%
    );
}

.logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.logo-icon {
    font-size: 2.2rem;
    filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.5));
    animation: flicker 4s ease-in-out infinite;
}

@keyframes flicker {
    0%, 100% { opacity: 1; filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.5)); }
    50% { opacity: 0.9; filter: drop-shadow(0 2px 8px rgba(212, 160, 23, 0.3)); }
}

.logo h1 {
    font-family: var(--font-display);
    font-size: 1.6rem;
    font-weight: 700;
    color: var(--accent-gold);
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.5);
    letter-spacing: 0.05em;
    text-transform: uppercase;
}

/* Global Progress Bar */
.global-progress {
    flex: 1;
    max-width: 400px;
    margin: 0 var(--spacing-xl);
}

.progress-bar {
    height: 16px;
    background: var(--bg-tertiary);
    border-radius: var(--radius-sm);
    overflow: hidden;
    margin-bottom: var(--spacing-xs);
    border: 2px solid var(--wood-dark);
    box-shadow: inset 0 2px 4px rgba(0, 0, 0, 0.4);
    position: relative;
}

/* Decorative end caps */
.progress-bar::before,
.progress-bar::after {
    content: '';
    position: absolute;
    top: -2px;
    bottom: -2px;
    width: 8px;
    background: var(--wood-mid);
    border: 2px solid var(--wood-dark);
    z-index: 1;
}

.progress-bar::before {
    left: -4px;
    border-radius: 4px 0 0 4px;
}

.progress-bar::after {
    right: -4px;
    border-radius: 0 4px 4px 0;
}

.progress-fill {
    height: 100%;
    width: 0%;
    background: linear-gradient(180deg,
        var(--color-beginner-bright) 0%,
        var(--color-beginner) 50%,
        #3d7a2a 100%
    );
    transition: width var(--transition-slow) ease-out;
    position: relative;
    box-shadow: inset 0 -2px 4px rgba(0, 0, 0, 0.2),
                inset 0 2px 4px rgba(255, 255, 255, 0.1);
}

/* No shimmer animation - more grounded feel */

.progress-text {
    font-family: var(--font-display);
    font-size: 0.8rem;
    color: var(--text-secondary);
    text-align: center;
    letter-spacing: 0.05em;
    text-transform: uppercase;
}

/* Header Actions */
.header-actions {
    display: flex;
    gap: var(--spacing-sm);
}

.btn-icon {
    width: 44px;
    height: 44px;
    border-radius: var(--radius-sm);
    border: 2px solid var(--wood-dark);
    background: linear-gradient(180deg, var(--bg-tertiary) 0%, var(--bg-secondary) 100%);
    color: var(--text-primary);
    font-size: 1.2rem;
    cursor: pointer;
    transition: all var(--transition-fast);
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.3),
                inset 0 1px 0 rgba(255, 255, 255, 0.05);
}

.btn-icon:hover {
    background: linear-gradient(180deg, var(--bg-hover) 0%, var(--bg-tertiary) 100%);
    border-color: var(--accent-gold);
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.4),
                inset 0 1px 0 rgba(255, 255, 255, 0.1);
}

.btn-icon:active {
    transform: translateY(0);
    box-shadow: 0 1px 2px rgba(0, 0, 0, 0.3),
                inset 0 2px 4px rgba(0, 0, 0, 0.2);
}

/* ================================================
   Floor Navigation
   ================================================ */
.floor-nav {
    display: flex;
    justify-content: center;
    gap: var(--spacing-md);
    padding: var(--spacing-md) var(--spacing-lg);
    background: linear-gradient(180deg,
        rgba(26, 20, 16, 0.98) 0%,
        rgba(26, 20, 16, 0.95) 100%
    );
    border-bottom: 2px solid var(--wood-dark);
    position: sticky;
    top: 70px;
    z-index: 100;
    backdrop-filter: blur(8px);
}

.floor-tab {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-lg);
    background:
        linear-gradient(180deg, var(--bg-tertiary) 0%, var(--bg-secondary) 100%);
    border: 2px solid var(--wood-dark);
    border-radius: var(--radius-sm);
    color: var(--text-secondary);
    cursor: pointer;
    transition: all var(--transition-normal);
    position: relative;
    font-family: var(--font-display);
    font-size: 0.9rem;
    font-weight: 600;
    letter-spacing: 0.03em;
    text-transform: uppercase;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
}

.floor-tab:hover:not(.locked) {
    background: linear-gradient(180deg, var(--bg-hover) 0%, var(--bg-tertiary) 100%);
    border-color: var(--accent-gold);
    transform: translateY(-3px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.4);
}

.floor-tab.active {
    color: var(--text-primary);
    transform: translateY(-3px);
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.5);
}

.floor-tab[data-floor="beginner"].active {
    border-color: var(--color-beginner);
    background: linear-gradient(180deg,
        var(--color-beginner-dim) 0%,
        var(--bg-secondary) 100%
    );
}

.floor-tab[data-floor="intermediate"].active {
    border-color: var(--color-intermediate);
    background: linear-gradient(180deg,
        var(--color-intermediate-dim) 0%,
        var(--bg-secondary) 100%
    );
}

.floor-tab[data-floor="advanced"].active {
    border-color: var(--color-advanced);
    background: linear-gradient(180deg,
        var(--color-advanced-dim) 0%,
        var(--bg-secondary) 100%
    );
}

.floor-tab[data-floor="expert"].active {
    border-color: var(--color-expert);
    background: linear-gradient(180deg,
        var(--color-expert-dim) 0%,
        var(--bg-secondary) 100%
    );
}

.floor-tab.locked {
    cursor: not-allowed;
    background: var(--bg-secondary);
    border-color: var(--border-subtle);
    color: var(--color-locked-text);
    box-shadow: none;
}

.floor-tab.locked:hover {
    transform: none;
}

.floor-icon {
    font-size: 1.3rem;
    filter: drop-shadow(0 1px 2px rgba(0, 0, 0, 0.3));
}

.floor-name {
    text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.3);
}

.floor-progress {
    font-family: var(--font-body);
    font-size: 0.75rem;
    color: var(--text-muted);
    background: rgba(0, 0, 0, 0.3);
    padding: 2px 8px;
    border-radius: var(--radius-sm);
    border: 1px solid var(--border-subtle);
}

.lock-indicator {
    position: absolute;
    top: -10px;
    right: -10px;
    font-size: 1rem;
    background: var(--bg-card);
    padding: 4px 6px;
    border-radius: var(--radius-sm);
    border: 2px solid var(--wood-dark);
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.4);
}

.lock-indicator.hidden {
    display: none;
}

/* ================================================
   Buttons
   ================================================ */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-lg);
    border-radius: var(--radius-sm);
    font-family: var(--font-display);
    font-size: 0.9rem;
    font-weight: 600;
    letter-spacing: 0.03em;
    text-transform: uppercase;
    cursor: pointer;
    transition: all var(--transition-fast);
    border: 2px solid transparent;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
    position: relative;
}

.btn-primary {
    background: linear-gradient(180deg,
        var(--color-beginner-bright) 0%,
        var(--color-beginner) 50%,
        #3d7a2a 100%
    );
    color: #fff;
    border-color: #3d7a2a;
    text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.3);
}

.btn-primary:hover:not(:disabled) {
    background: linear-gradient(180deg,
        #8fd96a 0%,
        var(--color-beginner-bright) 50%,
        var(--color-beginner) 100%
    );
    transform: translateY(-2px);
    box-shadow: 0 4px 12px var(--color-beginner-glow);
}

.btn-primary:active:not(:disabled) {
    transform: translateY(0);
    box-shadow: 0 1px 2px rgba(0, 0, 0, 0.3),
                inset 0 2px 4px rgba(0, 0, 0, 0.2);
}

.btn-primary:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none;
    filter: grayscale(0.5);
}

.btn-secondary {
    background: linear-gradient(180deg,
        var(--bg-tertiary) 0%,
        var(--bg-secondary) 100%
    );
    color: var(--text-primary);
    border-color: var(--wood-dark);
}

.btn-secondary:hover:not(:disabled) {
    background: linear-gradient(180deg,
        var(--bg-hover) 0%,
        var(--bg-tertiary) 100%
    );
    border-color: var(--accent-gold);
    transform: translateY(-2px);
}

.btn-secondary:active:not(:disabled) {
    transform: translateY(0);
    box-shadow: 0 1px 2px rgba(0, 0, 0, 0.3),
                inset 0 2px 4px rgba(0, 0, 0, 0.2);
}

.btn-secondary:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

/* ================================================
   Floor Info Banner
   ================================================ */
.floor-info {
    position: absolute;
    bottom: var(--spacing-lg);
    left: 50%;
    transform: translateX(-50%);
    background: linear-gradient(180deg, var(--bg-card) 0%, var(--bg-primary) 100%);
    padding: var(--spacing-sm) var(--spacing-xl);
    border-radius: var(--radius-sm);
    border: 2px solid var(--wood-dark);
    font-family: var(--font-body);
    font-size: 0.9rem;
    font-style: italic;
    color: var(--text-secondary);
    z-index: 10;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.4);
}

.floor-info::before {
    content: '⚔';
    margin-right: var(--spacing-sm);
}

/* ================================================
   Utility Classes
   ================================================ */
.hidden {
    display: none !important;
}

.visually-hidden {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

/* ================================================
   Particles Container
   ================================================ */
.particles-container {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 1000;
    overflow: hidden;
}

.particle {
    position: absolute;
    width: 8px;
    height: 8px;
    border-radius: 50%;
    pointer-events: none;
}

/* ================================================
   Scrollbar Styling
   ================================================ */
::-webkit-scrollbar {
    width: 12px;
    height: 12px;
}

::-webkit-scrollbar-track {
    background: var(--bg-primary);
    border-left: 1px solid var(--wood-dark);
}

::-webkit-scrollbar-thumb {
    background: linear-gradient(180deg,
        var(--bg-hover) 0%,
        var(--bg-tertiary) 100%
    );
    border-radius: var(--radius-sm);
    border: 2px solid var(--wood-dark);
}

::-webkit-scrollbar-thumb:hover {
    background: linear-gradient(180deg,
        var(--parchment-shadow) 0%,
        var(--bg-hover) 100%
    );
}

/* ================================================
   Selection Styling
   ================================================ */
::selection {
    background: var(--accent-gold);
    color: var(--text-dark);
}

/* ================================================
   Focus Styling
   ================================================ */
:focus-visible {
    outline: 2px solid var(--accent-gold);
    outline-offset: 2px;
}

button:focus:not(:focus-visible) {
    outline: none;
}