/* ============================================
   期权卡牌游戏 - 基础样式
   现代化设计系统
   ============================================ */

:root {
    /* 主要色彩 */
    --primary-color: #6366f1;
    --primary-hover: #4f46e5;
    --primary-light: #818cf8;
    --success-color: #10b981;
    --success-light: #34d399;
    --warning-color: #f59e0b;
    --warning-light: #fbbf24;
    --danger-color: #ef4444;
    --danger-light: #f87171;

    /* 背景色 */
    --bg-dark: #0f172a;
    --bg-card: #1e293b;
    --bg-card-hover: #334155;
    --bg-elevated: #283548;

    /* 文字色 */
    --text-primary: #f8fafc;
    --text-secondary: #94a3b8;
    --text-muted: #64748b;

    /* 邊框 */
    --border-color: #334155;
    --border-light: rgba(99, 102, 241, 0.2);

    /* HP 顏色 */
    --hp-high: #22c55e;
    --hp-mid: #f59e0b;
    --hp-low: #ef4444;

    /* 卡片漸層 - 高級質感 */
    --card-shadow: 0 8px 16px -4px rgba(0, 0, 0, 0.5);
    --card-shadow-hover: 0 20px 25px -5px rgba(0, 0, 0, 0.6), 0 8px 10px -6px rgba(0, 0, 0, 0.1);

    /* 卡片背景 */
    --card-market: linear-gradient(145deg, #f97316, #ea580c);
    --card-position: linear-gradient(145deg, #3b82f6, #2563eb);
    --card-event: linear-gradient(145deg, #a855f7, #7c3aed);
    --card-long: linear-gradient(145deg, #22c55e, #16a34a);
    --card-short: linear-gradient(145deg, #ef4444, #dc2626);

    /* 過渡效果 */
    --transition-fast: 0.15s ease;
    --transition-normal: 0.3s ease;
    --transition-smooth: 0.3s cubic-bezier(0.4, 0, 0.2, 1);

    /* 捲軸樣式 */
    --scrollbar-width: 8px;
    --scrollbar-track: rgba(99, 102, 241, 0.1);
    --scrollbar-thumb: rgba(139, 92, 246, 0.5);
    --scrollbar-thumb-hover: rgba(139, 92, 246, 0.8);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

/* 全局捲軸樣式 */
::-webkit-scrollbar {
    width: var(--scrollbar-width);
    height: var(--scrollbar-width);
}

::-webkit-scrollbar-track {
    background: var(--scrollbar-track);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb {
    background: var(--scrollbar-thumb);
    border-radius: 4px;
    border: 1px solid rgba(255, 255, 255, 0.1);
}

::-webkit-scrollbar-thumb:hover {
    background: var(--scrollbar-thumb-hover);
}

/* Firefox 捲軸 */
* {
    scrollbar-width: thin;
    scrollbar-color: var(--scrollbar-thumb) var(--scrollbar-track);
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: var(--bg-dark);
    color: var(--text-primary);
    min-height: 100vh;
    line-height: 1.5;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* ============ 按鈕基礎樣式 ============ */
.btn {
    padding: 12px 24px;
    border: none;
    border-radius: 10px;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-smooth);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    position: relative;
    overflow: hidden;
    text-decoration: none;
}

.btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: left 0.5s ease;
}

.btn:hover:not(:disabled)::before {
    left: 100%;
}

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

/* Primary 按鈕 */
.btn-primary {
    background: linear-gradient(135deg, var(--primary-color), #8b5cf6);
    color: white;
    box-shadow: 0 4px 15px -3px rgba(99, 102, 241, 0.4);
}

.btn-primary:hover:not(:disabled) {
    background: linear-gradient(135deg, var(--primary-hover), #7c3aed);
    transform: translateY(-2px);
    box-shadow: 0 8px 25px -5px rgba(99, 102, 241, 0.5);
}

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

/* Success 按鈕 */
.btn-success {
    background: linear-gradient(135deg, var(--success-color), #059669);
    color: white;
    box-shadow: 0 4px 15px -3px rgba(16, 185, 129, 0.4);
}

.btn-success:hover:not(:disabled) {
    background: linear-gradient(135deg, var(--success-light), #10b981);
    transform: translateY(-2px);
    box-shadow: 0 8px 25px -5px rgba(16, 185, 129, 0.5);
}

/* Warning 按鈕 */
.btn-warning {
    background: linear-gradient(135deg, var(--warning-color), #d97706);
    color: white;
    box-shadow: 0 4px 15px -3px rgba(245, 158, 11, 0.4);
}

.btn-warning:hover:not(:disabled) {
    background: linear-gradient(135deg, var(--warning-light), #f59e0b);
    transform: translateY(-2px);
    box-shadow: 0 8px 25px -5px rgba(245, 158, 11, 0.5);
}

/* Danger 按鈕 */
.btn-danger {
    background: linear-gradient(135deg, var(--danger-color), #dc2626);
    color: white;
    box-shadow: 0 4px 15px -3px rgba(239, 68, 68, 0.4);
}

.btn-danger:hover:not(:disabled) {
    background: linear-gradient(135deg, var(--danger-light), #ef4444);
    transform: translateY(-2px);
    box-shadow: 0 8px 25px -5px rgba(239, 68, 68, 0.5);
}

/* 小型按鈕 */
.btn-sm {
    padding: 8px 16px;
    font-size: 12px;
    border-radius: 8px;
}

/* 小型 Success/Danger 按鈕 (用於首頁) */
.btn-success-sm {
    padding: 6px 12px;
    font-size: 11px;
    font-weight: 600;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    background: linear-gradient(135deg, var(--success-color), #059669);
    color: white;
    transition: all var(--transition-smooth);
}

.btn-success-sm:hover:not(:disabled) {
    background: linear-gradient(135deg, var(--success-light), #10b981);
    transform: translateY(-1px);
    box-shadow: 0 4px 12px -2px rgba(16, 185, 129, 0.4);
}

.btn-danger-sm {
    padding: 6px 12px;
    font-size: 11px;
    font-weight: 600;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    background: linear-gradient(135deg, var(--danger-color), #dc2626);
    color: white;
    transition: all var(--transition-smooth);
}

.btn-danger-sm:hover:not(:disabled) {
    background: linear-gradient(135deg, var(--danger-light), #ef4444);
    transform: translateY(-1px);
    box-shadow: 0 4px 12px -2px rgba(239, 68, 68, 0.4);
}

/* Ghost 按鈕（透明背景） */
.btn-ghost {
    background: transparent;
    color: var(--text-secondary);
    border: 1px solid var(--border-color);
}

.btn-ghost:hover:not(:disabled) {
    background: rgba(99, 102, 241, 0.1);
    border-color: var(--primary-color);
    color: var(--primary-light);
}

/* 載入狀態 */
.btn-loading {
    pointer-events: none;
    opacity: 0.8;
}

.btn-loading::after {
    content: '';
    width: 14px;
    height: 14px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-top-color: white;
    border-radius: 50%;
    animation: spin 0.6s linear infinite;
    margin-left: 8px;
}

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

/* ============ 全局工具類 ============ */
.hidden {
    display: none !important;
}

.text-center {
    text-align: center;
}

.text-primary {
    color: var(--primary-color);
}

.text-success {
    color: var(--success-color);
}

.text-warning {
    color: var(--warning-color);
}

.text-danger {
    color: var(--danger-color);
}

.text-muted {
    color: var(--text-secondary);
}

/* ============ 選擇禁用（遊戲中） ============ */
.game-container {
    user-select: none;
    -webkit-user-select: none;
}

/* 輸入框可選 */
input,
textarea {
    user-select: text;
    -webkit-user-select: text;
}