/**
 * YoreBound - Fantasy Board Game Companion App
 * Warm Sunset Archaeological Theme with Frosted Glass
 * Single Source of Truth for All Styles
 */

/* ========================================
   CSS VARIABLES
   ======================================== */
:root {
    /* Earthy tones */
    --color-terracotta: #C1704E;
    --color-terracotta-dark: #964A2D;
    --color-clay: #B87654;
    --color-sand: #D4A574;
    --color-sand-light: #E8C9A1;
    
    /* Warm sunset */
    --color-sunset-orange: #E87644;
    --color-sunset-peach: #F2A65A;
    --color-sunset-gold: #D99E47;
    --color-sunset-deep: #8B4513;
    
    /* Ancient stone */
    --color-stone: #A3907C;
    --color-stone-dark: #6B5E52;
    --color-stone-light: #C4B5A0;
    
    /* Accents */
    --color-amber: #D99E47;
    --color-sage: #8B9B7E;
    --color-rust: #A85835;
    --color-bronze: #8B6914;
    
    /* Background */
    --color-bg-main: linear-gradient(135deg, 
        #8B4513 0%, #A85835 30%, #C1704E 70%, #E87644 100%);
    
    /* Frosted glass layers */
    --glass-light: rgba(255, 247, 237, 0.15);
    --glass-medium: rgba(255, 247, 237, 0.25);
    --glass-heavy: rgba(255, 247, 237, 0.35);
    --glass-border: rgba(255, 247, 237, 0.3);
    
    /* Text */
    --color-text: #1a1410;
    --color-text-light: #3d2f24;
    --color-text-muted: #5a4a3d;
    --color-text-inverse: #ffffff;
    
    /* Shadows */
    --shadow-sm: 0 2px 12px rgba(139, 69, 19, 0.15);
    --shadow-md: 0 4px 24px rgba(139, 69, 19, 0.25);
    --shadow-lg: 0 8px 40px rgba(139, 69, 19, 0.35);
    --shadow-glow: 0 0 20px rgba(232, 118, 68, 0.4);
}

/* ========================================
   PLAYER COLORS
   ======================================== */
.color-red { background-color: #A85835; }
.color-blue { background-color: #6B8C9A; }
.color-green { background-color: #8B9B7E; }
.color-yellow { background-color: #D99E47; }
.color-purple { background-color: #8B6914; }
.color-orange { background-color: #E87644; }

/* ========================================
   RESET & BASE STYLES
   ======================================== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-image: 
        var(--color-bg-main),
        url('../img/bg.webp');
    background-image: 
        var(--color-bg-main),
        url('../img/bg.jpg');
    background-size: cover;
    background-position: center;
    background-attachment: fixed;
    background-blend-mode: multiply, normal;
    color: var(--color-text);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: flex-start;
    padding: 40px 20px 20px;
}

.container {
    width: 100%;
    max-width: 600px;
    margin: 0 auto;
    flex-shrink: 0;
}

/* ========================================
   CARDS & FROSTED GLASS
   ======================================== */
.card {
    background: rgba(255, 247, 237, 0.75);
    backdrop-filter: blur(20px) saturate(180%);
    -webkit-backdrop-filter: blur(20px) saturate(180%);
    border: 1px solid var(--glass-border);
    border-radius: 20px;
    padding: 30px;
    box-shadow: var(--shadow-lg);
    margin-bottom: 20px;
    position: relative;
    
    /* Mask for torn parchment edges - PNG fallback */
    /* Using border-image for 9-slice behavior to prevent stretching */
    -webkit-mask-box-image-source: url('/assets/img/mask.png');
    mask-border-source: url('/assets/img/mask.png');
    /* Slice: top/bottom=30px, left/right=50px for better short card support */
    -webkit-mask-box-image-slice: 30 50 fill;
    mask-border-slice: 30 50 fill;
    -webkit-mask-box-image-width: 30px 50px;
    mask-border-width: 30px 50px;
    -webkit-mask-box-image-repeat: stretch;
    mask-border-repeat: stretch;
    
    /* Fallback for browsers without mask-border support */
    -webkit-mask-image: url('/assets/img/mask.png');
    mask-image: url('/assets/img/mask.png');
    -webkit-mask-size: 100% 100%;
    mask-size: 100% 100%;
    -webkit-mask-repeat: no-repeat;
    mask-repeat: no-repeat;
    -webkit-mask-position: center;
    mask-position: center;
    
    /* Drop shadow works with masks (box-shadow doesn't) */
    filter: drop-shadow(0 8px 24px rgba(139, 69, 19, 0.3));
}

/* WebP mask for supported browsers */
@supports (mask-image: url('/assets/img/mask.webp')) {
    .card {
        -webkit-mask-box-image-source: url('/assets/img/mask.webp');
        mask-border-source: url('/assets/img/mask.webp');
        -webkit-mask-image: url('/assets/img/mask.webp');
        mask-image: url('/assets/img/mask.webp');
    }
}

/* Subtle texture overlay */
.card::before {
    content: '';
    position: absolute;
    inset: 0;
    background-image: repeating-linear-gradient(
        45deg,
        transparent,
        transparent 10px,
        rgba(255, 247, 237, 0.02) 10px,
        rgba(255, 247, 237, 0.02) 20px
    );
    border-radius: 20px;
    pointer-events: none;
}


.card-header {
    margin-bottom: 25px;
    text-align: center;
    position: relative;
    z-index: 1;
}

.card-title {
    font-size: 28px;
    font-weight: 700;
    color: var(--color-text);
    margin-bottom: 8px;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.card-subtitle {
    font-size: 16px;
    color: var(--color-text);
    opacity: 0.8;
}

/* ========================================
   FORMS
   ======================================== */
.form-group {
    margin-bottom: 20px;
    position: relative;
    z-index: 1;
}

label {
    display: block;
    font-weight: 600;
    margin-bottom: 8px;
    color: var(--color-text);
}

input[type="text"],
input[type="number"],
select {
    width: 100%;
    padding: 12px 16px;
    border: 2px solid var(--glass-border);
    background: var(--glass-light);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border-radius: 10px;
    font-size: 16px;
    color: var(--color-text);
    transition: all 0.3s ease;
}

input:focus,
select:focus {
    outline: none;
    border-color: var(--color-terracotta);
    background: var(--glass-medium);
    box-shadow: 0 0 0 3px rgba(193, 112, 78, 0.1);
}

input::placeholder {
    color: var(--color-text);
    opacity: 0.5;
}

/* ========================================
   BUTTONS
   ======================================== */
.btn {
    display: inline-block;
    padding: 14px 28px;
    font-size: 16px;
    font-weight: 600;
    text-align: center;
    border: none;
    border-radius: 12px;
    cursor: pointer;
    transition: all 0.3s ease;
    width: 100%;
    box-shadow: var(--shadow-sm);
    position: relative;
    z-index: 1;
}

.btn-primary {
    background: linear-gradient(135deg, var(--color-terracotta) 0%, var(--color-rust) 100%);
    color: var(--color-text-inverse);
    border: 1px solid rgba(255, 247, 237, 0.2);
}

.btn-primary:hover {
    background: linear-gradient(135deg, var(--color-terracotta-dark) 0%, var(--color-rust) 100%);
    transform: translateY(-2px);
    box-shadow: var(--shadow-glow);
}

.btn-secondary {
    background: linear-gradient(135deg, var(--color-amber) 0%, var(--color-sand) 100%);
    color: var(--color-text);
    border: 1px solid rgba(255, 247, 237, 0.2);
}

.btn-secondary:hover {
    background: linear-gradient(135deg, var(--color-sand) 0%, var(--color-sand-light) 100%);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.btn-danger {
    background: linear-gradient(135deg, var(--color-rust) 0%, #8B3E2F 100%);
    color: var(--color-text-inverse);
    border: 1px solid rgba(255, 247, 237, 0.2);
}

.btn-danger:hover {
    background: linear-gradient(135deg, #8B3E2F 0%, #6B2E1F 100%);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none;
}

.btn-sm {
    padding: 8px 16px;
    font-size: 14px;
}

.button-group {
    display: flex;
    gap: 10px;
    margin: 15px 0;
}

.button-group .btn {
    flex: 1;
}

.copy-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 16px;
    background: var(--glass-light);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid var(--glass-border);
    border-radius: 8px;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: var(--shadow-sm);
}

.copy-btn:hover {
    background: var(--glass-medium);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

/* ========================================
   ROOM CODE DISPLAY
   ======================================== */
.room-code-display {
    background: var(--glass-heavy);
    backdrop-filter: blur(20px) saturate(180%);
    -webkit-backdrop-filter: blur(20px) saturate(180%);
    border: 2px solid var(--glass-border);
    color: var(--color-text);
    padding: 20px;
    border-radius: 15px;
    text-align: center;
    margin: 20px 0;
    box-shadow: var(--shadow-glow), inset 0 1px 0 rgba(255, 247, 237, 0.2);
    position: relative;
    z-index: 1;
}

.room-code-label {
    font-size: 14px;
    margin-bottom: 8px;
    color: var(--color-text);
    opacity: 0.9;
}

.room-code {
    font-size: 36px;
    font-weight: 700;
    letter-spacing: 4px;
    font-family: 'Courier New', monospace;
    color: var(--color-sunset-deep);
    text-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
}

/* ========================================
   QR CODE
   ======================================== */
.qr-code-container {
    text-align: center;
    margin: 20px 0;
    padding: 15px;
    background: var(--glass-light);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border-radius: 15px;
    border: 1px solid var(--glass-border);
}

.qr-code-container img,
.qr-code-container canvas {
    max-width: 250px;
    border-radius: 12px;
    box-shadow: var(--shadow-md);
}

.qr-label {
    margin-bottom: 10px;
    color: var(--color-text);
    opacity: 0.8;
}

/* ========================================
   PLAYERS LIST
   ======================================== */
.players-list {
    list-style: none;
    padding: 0;
}

.player-item {
    display: flex;
    align-items: center;
    padding: 15px;
    background: var(--glass-light);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid var(--glass-border);
    border-radius: 12px;
    margin-bottom: 10px;
    transition: all 0.3s ease;
    box-shadow: var(--shadow-sm);
}

.player-item:hover {
    transform: translateX(5px);
    background: var(--glass-medium);
    box-shadow: var(--shadow-md);
}

.player-color {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    margin-right: 15px;
    border: 3px solid rgba(255, 247, 237, 0.5);
    box-shadow: var(--shadow-sm);
}

.player-info {
    flex: 1;
}

.player-name {
    font-weight: 600;
    font-size: 16px;
    margin-bottom: 2px;
    color: var(--color-text);
}

.player-status {
    font-size: 14px;
    color: var(--color-text);
    opacity: 0.8;
}

.player-badge {
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 600;
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
}

.badge-host {
    background: linear-gradient(135deg, var(--color-amber) 0%, var(--color-sand) 100%);
    color: var(--color-text);
    border: 1px solid rgba(217, 158, 71, 0.3);
}

.badge-online {
    background: var(--glass-medium);
    color: var(--color-sage);
    border: 1px solid rgba(139, 155, 126, 0.3);
}

.badge-offline {
    background: var(--glass-light);
    color: var(--color-text);
    opacity: 0.7;
    border: 1px solid var(--glass-border);
}

/* ========================================
   ACTIVITIES
   ======================================== */
.activity-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
    gap: 15px;
    margin-top: 20px;
}

.activity-card {
    background: var(--glass-medium);
    backdrop-filter: blur(15px) saturate(180%);
    -webkit-backdrop-filter: blur(15px) saturate(180%);
    border: 2px solid var(--glass-border);
    padding: 20px;
    border-radius: 15px;
    text-align: center;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: var(--shadow-sm);
    position: relative;
}

.activity-card::before {
    content: '';
    position: absolute;
    inset: 0;
    border-radius: 15px;
    background: linear-gradient(135deg, 
        rgba(193, 112, 78, 0.3) 0%, 
        rgba(212, 118, 75, 0.2) 100%);
    opacity: 0;
    transition: opacity 0.3s ease;
}

.activity-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-glow);
    border-color: var(--color-terracotta);
}

.activity-card:hover::before {
    opacity: 1;
}

.activity-icon {
    font-size: 40px;
    margin-bottom: 10px;
    position: relative;
    z-index: 1;
    filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.2));
}

.activity-name {
    font-weight: 600;
    font-size: 14px;
    position: relative;
    z-index: 1;
    text-shadow: 0 1px 3px rgba(0, 0, 0, 0.3);
}

/* ========================================
   TABS
   ======================================== */
.tab-nav {
    display: flex;
    gap: 5px;
    border-bottom: 2px solid var(--glass-border);
    padding-bottom: 5px;
}

.tab-btn {
    padding: 10px 16px;
    border: none;
    background: var(--glass-light);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    color: var(--color-text);
    opacity: 0.7;
    font-size: 14px;
    font-weight: 600;
    border-radius: 8px 8px 0 0;
    cursor: pointer;
    transition: all 0.3s ease;
    border-bottom: 2px solid transparent;
    display: flex;
    align-items: center;
    gap: 6px;
    white-space: nowrap;
}

.tab-btn .material-symbols-outlined {
    font-size: 20px;
    font-variation-settings: 'FILL' 0, 'wght' 400, 'GRAD' 0, 'opsz' 20;
}

.tab-btn.active .material-symbols-outlined {
    font-variation-settings: 'FILL' 1, 'wght' 600, 'GRAD' 0, 'opsz' 20;
}

.tab-btn:hover {
    background: var(--glass-medium);
    opacity: 1;
}

.tab-btn.active {
    background: var(--glass-heavy);
    color: var(--color-terracotta);
    opacity: 1;
    border-bottom-color: var(--color-terracotta);
}

.tab-content {
    display: none;
}

.tab-content.active {
    display: block;
}

/* Mobile: Icon-only tabs */
@media (max-width: 600px) {
    .tab-btn {
        padding: 10px 12px;
        min-width: 44px;
        justify-content: center;
    }
    
    .tab-label {
        display: none;
    }
    
    .tab-btn .material-symbols-outlined {
        font-size: 22px;
    }
    
    .tab-nav {
        gap: 3px;
        justify-content: space-around;
    }
}

/* ========================================
   ALERTS & MESSAGES
   ======================================== */
.spinner {
    border: 3px solid var(--glass-border);
    border-top: 3px solid var(--color-terracotta);
    border-radius: 50%;
    width: 40px;
    height: 40px;
    animation: spin 1s linear infinite;
    margin: 20px auto;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

.alert {
    padding: 15px 20px;
    border-radius: 12px;
    margin-bottom: 20px;
    font-weight: 500;
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid;
}

.alert-success {
    background: rgba(139, 155, 126, 0.3);
    color: #1a3a1a;
    border-color: rgba(139, 155, 126, 0.5);
}

.alert-error {
    background: rgba(168, 88, 53, 0.3);
    color: #3d1a10;
    border-color: rgba(168, 88, 53, 0.5);
}

.alert-warning {
    background: rgba(217, 158, 71, 0.3);
    color: #3d2f10;
    border-color: rgba(217, 158, 71, 0.6);
}

.alert-info {
    background: var(--glass-medium);
    color: var(--color-text);
    border-color: var(--glass-border);
}

/* ========================================
   UTILITIES
   ======================================== */
.text-center {
    text-align: center;
}

.mt-20 {
    margin-top: 20px;
}

.mb-20 {
    margin-bottom: 20px;
}

.hidden {
    display: none !important;
}

.divider {
    height: 2px;
    background: linear-gradient(to right, transparent, var(--glass-border), transparent);
    margin: 25px 0;
}

.empty-message {
    text-align: center;
    padding: 40px;
    color: var(--color-text);
    opacity: 0.6;
}

/* ========================================
   RESPONSIVE
   ======================================== */
@media (max-width: 768px) {
    .card {
        padding: 20px;
    }
    
    .room-code {
        font-size: 28px;
        letter-spacing: 2px;
    }
    
    .card-title {
        font-size: 24px;
    }
    
    .activity-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}