/* ===== Pages — Apple-Inspired Design System ===== */
/* System font stack — no external CDN dependency */

:root {
    /* 字体 */
    --font: 'Inter', -apple-system, BlinkMacSystemFont, 'SF Pro Display', 'Segoe UI', sans-serif;
    --font-mono: 'SF Mono', 'Menlo', 'Consolas', monospace;

    /* 圆角 */
    --radius: 12px;
    --radius-sm: 8px;
    --radius-lg: 16px;
    --radius-xl: 20px;

    /* 过渡 */
    --ease: cubic-bezier(0.25, 0.1, 0.25, 1);
    --duration: 0.2s;

    /* 投影 */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.04);
    --shadow: 0 2px 8px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 8px 30px rgba(0, 0, 0, 0.08);
    --shadow-xl: 0 20px 60px rgba(0, 0, 0, 0.1);
}

/* ===== 浅色主题（默认） ===== */
[data-theme="light"],
[data-theme="auto"] {
    --bg: #f5f5f7;
    --bg-primary: #ffffff;
    --bg-secondary: #f5f5f7;
    --bg-tertiary: #e8e8ed;
    --bg-card: #ffffff;
    --bg-input: #f5f5f7;
    --bg-hover: rgba(0, 0, 0, 0.03);

    --text: #1d1d1f;
    --text-secondary: #86868b;
    --text-tertiary: #aeaeb2;

    --border: rgba(0, 0, 0, 0.08);
    --border-focus: rgba(0, 0, 0, 0.18);
    --divider: rgba(0, 0, 0, 0.06);

    --accent: #0071e3;
    --accent-hover: #0077ED;
    --accent-light: rgba(0, 113, 227, 0.06);

    --success: #30d158;
    --warning: #ff9f0a;
    --danger: #ff3b30;

    --code-bg: #f5f5f7;
    --glass: rgba(255, 255, 255, 0.72);
    --glass-border: rgba(0, 0, 0, 0.06);
}

/* ===== 深色主题 ===== */
[data-theme="dark"] {
    --bg: #000000;
    --bg-primary: #1c1c1e;
    --bg-secondary: #2c2c2e;
    --bg-tertiary: #3a3a3c;
    --bg-card: #1c1c1e;
    --bg-input: #2c2c2e;
    --bg-hover: rgba(255, 255, 255, 0.05);

    --text: #f5f5f7;
    --text-secondary: #86868b;
    --text-tertiary: #636366;

    --border: rgba(255, 255, 255, 0.1);
    --border-focus: rgba(255, 255, 255, 0.2);
    --divider: rgba(255, 255, 255, 0.06);

    --accent: #0a84ff;
    --accent-hover: #409cff;
    --accent-light: rgba(10, 132, 255, 0.1);

    --success: #30d158;
    --warning: #ff9f0a;
    --danger: #ff453a;

    --code-bg: #2c2c2e;
    --glass: rgba(28, 28, 30, 0.72);
    --glass-border: rgba(255, 255, 255, 0.08);

    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.2);
    --shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
    --shadow-lg: 0 8px 30px rgba(0, 0, 0, 0.4);
    --shadow-xl: 0 20px 60px rgba(0, 0, 0, 0.5);
}

@media (prefers-color-scheme: dark) {
    [data-theme="auto"] {
        --bg: #000000;
        --bg-primary: #1c1c1e;
        --bg-secondary: #2c2c2e;
        --bg-tertiary: #3a3a3c;
        --bg-card: #1c1c1e;
        --bg-input: #2c2c2e;
        --bg-hover: rgba(255, 255, 255, 0.05);
        --text: #f5f5f7;
        --text-secondary: #86868b;
        --text-tertiary: #636366;
        --border: rgba(255, 255, 255, 0.1);
        --border-focus: rgba(255, 255, 255, 0.2);
        --divider: rgba(255, 255, 255, 0.06);
        --accent: #0a84ff;
        --accent-hover: #409cff;
        --accent-light: rgba(10, 132, 255, 0.1);
        --danger: #ff453a;
        --code-bg: #2c2c2e;
        --glass: rgba(28, 28, 30, 0.72);
        --glass-border: rgba(255, 255, 255, 0.08);
        --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.2);
        --shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
        --shadow-lg: 0 8px 30px rgba(0, 0, 0, 0.4);
        --shadow-xl: 0 20px 60px rgba(0, 0, 0, 0.5);
    }
}

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

body {
    font-family: var(--font);
    font-size: 15px;
    line-height: 1.5;
    color: var(--text);
    background: var(--bg);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    font-feature-settings: 'kern' 1;
}

a {
    color: var(--accent);
    text-decoration: none;
    transition: opacity var(--duration) var(--ease);
}

a:hover {
    opacity: 0.8;
}

::selection {
    background: var(--accent);
    color: #fff;
}

/* ===== 卡片 ===== */
.card {
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border);
    padding: 28px;
}

/* ===== 按钮 ===== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    padding: 10px 20px;
    font-family: var(--font);
    font-size: 14px;
    font-weight: 500;
    line-height: 1;
    border: none;
    border-radius: 980px;
    /* Apple pill shape */
    cursor: pointer;
    transition: all var(--duration) var(--ease);
    white-space: nowrap;
    letter-spacing: -0.01em;
}

.btn:active {
    transform: scale(0.97);
}

.btn-primary {
    background: var(--accent);
    color: #fff;
}

.btn-primary:hover {
    background: var(--accent-hover);
}

.btn-outline {
    background: transparent;
    color: var(--accent);
    border: 1px solid var(--accent);
}

.btn-outline:hover {
    background: var(--accent-light);
}

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

.btn-ghost:hover {
    background: var(--bg-hover);
    color: var(--text);
}

.btn-danger {
    background: var(--danger);
    color: #fff;
}

.btn-danger:hover {
    opacity: 0.85;
}

.btn-sm {
    padding: 6px 14px;
    font-size: 13px;
}

.btn-lg {
    padding: 14px 28px;
    font-size: 17px;
}

/* ===== 表单 ===== */
.form-group {
    margin-bottom: 16px;
}

.form-label {
    display: block;
    font-size: 13px;
    font-weight: 500;
    color: var(--text-secondary);
    margin-bottom: 6px;
    letter-spacing: -0.01em;
}

.input,
select,
textarea {
    width: 100%;
    padding: 10px 14px;
    font-family: var(--font);
    font-size: 15px;
    color: var(--text);
    background: var(--bg-input);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    outline: none;
    transition: border-color var(--duration) var(--ease), box-shadow var(--duration) var(--ease);
}

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

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

textarea {
    resize: vertical;
    line-height: 1.6;
}

select {
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg width='10' height='6' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M5 6L0 0h10z' fill='%2386868b'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 14px center;
    padding-right: 36px;
}

/* ===== 徽章 ===== */
.badge {
    display: inline-flex;
    align-items: center;
    padding: 3px 10px;
    font-size: 11px;
    font-weight: 600;
    border-radius: 980px;
    letter-spacing: 0.02em;
    text-transform: uppercase;
}

.badge-success {
    background: rgba(48, 209, 88, 0.12);
    color: var(--success);
}

.badge-warning {
    background: rgba(255, 159, 10, 0.12);
    color: var(--warning);
}

.badge-danger {
    background: rgba(255, 59, 48, 0.12);
    color: var(--danger);
}

/* ===== 主题切换器 ===== */
.theme-switcher {
    display: flex;
    background: var(--bg-secondary);
    border-radius: 980px;
    padding: 3px;
    gap: 2px;
}

.theme-switcher button {
    width: 30px;
    height: 30px;
    border: none;
    background: transparent;
    border-radius: 50%;
    cursor: pointer;
    font-size: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--duration) var(--ease);
    opacity: 0.5;
}

.theme-switcher button:hover {
    opacity: 0.8;
}

.theme-switcher button.active {
    background: var(--bg-card);
    box-shadow: var(--shadow-sm);
    opacity: 1;
}

/* ===== Toast ===== */
.toast-container {
    position: fixed;
    top: 24px;
    right: 24px;
    z-index: 9999;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.toast {
    padding: 12px 20px;
    background: var(--glass);
    backdrop-filter: blur(20px) saturate(180%);
    -webkit-backdrop-filter: blur(20px) saturate(180%);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius);
    font-size: 14px;
    color: var(--text);
    box-shadow: var(--shadow-lg);
    animation: toastIn 0.3s var(--ease);
}

.toast.error {
    border-left: 3px solid var(--danger);
}

.toast.success {
    border-left: 3px solid var(--success);
}

@keyframes toastIn {
    from {
        opacity: 0;
        transform: translateY(-8px) scale(0.96);
    }

    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

@keyframes slideOut {
    to {
        opacity: 0;
        transform: translateY(-8px) scale(0.96);
    }
}

/* ===== 滚动条 ===== */
::-webkit-scrollbar {
    width: 6px;
}

::-webkit-scrollbar-track {
    background: transparent;
}

::-webkit-scrollbar-thumb {
    background: var(--text-tertiary);
    border-radius: 3px;
}

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