:root {
    /* 颜色系统 */
    --bg-base: #0f172a;
    --bg-gradient: linear-gradient(135deg, #0f172a 0%, #020617 100%);
    --card-bg: rgba(30, 41, 59, 0.7);
    --card-border: rgba(255, 255, 255, 0.1);
    --card-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);

    --text-primary: #f8fafc;
    --text-secondary: #94a3b8;

    --accent-blue: #3b82f6;
    --accent-red: #ef4444;
    --accent-purple: #8b5cf6;
    --accent-yellow: #eab308;

    --btn-bg: rgba(255, 255, 255, 0.05);
    --btn-hover: rgba(255, 255, 255, 0.1);
    --btn-active: rgba(255, 255, 255, 0.15);
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    -webkit-tap-highlight-color: transparent;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    background: var(--bg-gradient);
    color: var(--text-primary);
    min-height: 100vh;
    padding: env(safe-area-inset-top, 8px) 12px env(safe-area-inset-bottom, 8px) 12px;
    overscroll-behavior-y: none;
}

.app-container {
    max-width: 500px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 10px;
    padding-bottom: 10px;
}

/* 头部样式 */
.header {
    background: var(--card-bg);
    border-radius: 16px;
    padding: 12px 16px;
    box-shadow: var(--card-shadow);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid var(--card-border);
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.header-title-wrapper {
    text-align: center;
}

.header h1 {
    font-size: 1.4rem;
    font-weight: 800;
    letter-spacing: 0.5px;
    background: linear-gradient(to right, #60a5fa, #c084fc);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    margin-bottom: 4px;
}

.badge {
    font-size: 0.7rem;
    background: linear-gradient(to right, #60a5fa, #c084fc);
    -webkit-text-fill-color: initial;
    color: white;
    padding: 2px 6px;
    border-radius: 6px;
    font-weight: 800;
    letter-spacing: 1px;
}

.subtitle {
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.header-controls {
    display: flex;
    gap: 12px;
}

.select-wrapper {
    position: relative;
    flex: 1;
}

select {
    width: 100%;
    background: rgba(0, 0, 0, 0.3);
    color: var(--text-primary);
    border: 1px solid var(--card-border);
    padding: 14px 16px;
    border-radius: 12px;
    font-size: 1rem;
    outline: none;
    appearance: none;
    font-weight: 600;
    transition: all 0.2s;
}

select:focus {
    border-color: var(--accent-blue);
    box-shadow: 0 0 0 2px rgba(59, 130, 246, 0.2);
}

.select-icon {
    position: absolute;
    right: 12px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-secondary);
    pointer-events: none;
    font-size: 0.8em;
}

.btn {
    border: none;
    border-radius: 10px;
    font-weight: 600;
    font-size: 0.95rem;
    cursor: pointer;
    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 4px;
}

.btn:active {
    transform: scale(0.95);
}

.btn-danger {
    padding: 0 20px;
    background: rgba(239, 68, 68, 0.1);
    color: var(--accent-red);
    border: 1px solid rgba(239, 68, 68, 0.3);
}

.btn-danger:active {
    background: rgba(239, 68, 68, 0.2);
}

/* 卡片列表区 */
.cards-container {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.card-item {
    background: var(--card-bg);
    border-radius: 16px;
    padding: 12px 14px 8px 14px;
    box-shadow: var(--card-shadow);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid var(--card-border);
    transition: transform 0.2s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.card-item.pop {
    transform: scale(0.98);
}

.card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 8px;
}

.card-title {
    font-size: 1.25rem;
    font-weight: 800;
    display: flex;
    align-items: center;
    gap: 6px;
}

.card-count-wrapper {
    display: flex;
    align-items: baseline;
    gap: 2px;
}

.card-count {
    font-size: 1.8rem;
    font-weight: 800;
    line-height: 1;
    transition: color 0.3s;
}

.card-total {
    font-size: 1.1rem;
    color: var(--text-secondary);
    font-weight: 600;
}

/* 颜色状态 */
.status-safe {
    color: var(--text-primary);
}

.status-warning {
    color: var(--accent-yellow);
}

.status-danger {
    color: var(--accent-red);
}

/* 操作区 */
.actions {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 6px;
    margin-bottom: 4px;
}

.btn-action {
    background: var(--btn-bg);
    color: var(--text-primary);
    border: 1px solid var(--card-border);
    padding: 8px 0;
    font-size: 0.95rem;
    border-radius: 10px;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1px;
}

.btn-action span {
    font-size: 0.65rem;
    color: var(--text-secondary);
    font-weight: 400;
}

.btn-action:active:not(:disabled) {
    background: var(--btn-active);
    transform: scale(0.92);
}

.btn-action:disabled {
    opacity: 0.3;
    cursor: not-allowed;
    background: transparent;
}

.btn-undo {
    width: 100%;
    background: transparent;
    color: var(--text-secondary);
    padding: 6px 0;
    border-radius: 10px;
    margin-top: 2px;
    font-size: 0.85rem;
}

.btn-undo:active:not(:disabled) {
    background: rgba(255, 255, 255, 0.03);
}

.btn-undo:disabled {
    opacity: 0.2;
    cursor: default;
}

/* 特定卡片颜色主题 */
#card-eagle .card-title {
    color: var(--accent-yellow);
    text-shadow: 0 0 15px rgba(234, 179, 8, 0.4);
}

#card-big-joker .card-title {
    color: var(--accent-red);
    text-shadow: 0 0 15px rgba(239, 68, 68, 0.4);
}

#card-small-joker .card-title {
    color: var(--text-primary);
    text-shadow: 0 0 15px rgba(255, 255, 255, 0.2);
}

#card-two .card-title {
    color: var(--accent-blue);
    text-shadow: 0 0 15px rgba(59, 130, 246, 0.4);
}

.footer {
    text-align: center;
    color: rgba(255, 255, 255, 0.2);
    font-size: 0.75rem;
    margin-top: 8px;
    margin-bottom: -10px;
}

/* 对门追踪器 */
.enemy-tracker {
    background: var(--card-bg);
    border-radius: 16px;
    padding: 16px;
    box-shadow: var(--card-shadow);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid var(--card-border);
}

.tracker-title {
    font-size: 1.1rem;
    font-weight: 800;
    margin-bottom: 12px;
    display: flex;
    align-items: center;
    gap: 6px;
    color: var(--accent-red);
}

.tracker-grid {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 8px;
}

.tracker-card {
    background: rgba(0, 0, 0, 0.4);
    border: 1px solid var(--card-border);
    border-radius: 10px;
    padding: 10px 0;
    text-align: center;
    font-weight: 800;
    font-size: 1.2rem;
    color: var(--text-secondary);
    cursor: pointer;
    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    user-select: none;
}

.tracker-card:active {
    transform: scale(0.92);
}

.tracker-card.active {
    background: rgba(239, 68, 68, 0.15);
    color: var(--accent-red);
    border-color: rgba(239, 68, 68, 0.4);
    box-shadow: 0 0 15px rgba(239, 68, 68, 0.2);
    text-shadow: 0 0 10px rgba(239, 68, 68, 0.4);
}

.tracker-hint {
    text-align: center;
    font-size: 0.75rem;
    color: var(--text-secondary);
    margin-top: 10px;
    opacity: 0.6;
}