/* ========================================
   CheckISP - 電信商檢測
   CSS Style - Light/Dark Theme Support
   ======================================== */

/* --- Google Font --- */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800&display=swap');

/* --- CSS Variables (Light Theme) --- */
:root {
    --bg-primary: #f0f2f5;
    --bg-card: #ffffff;
    --bg-card-hover: #fafbfc;
    --bg-input: #f7f8fa;
    --bg-badge: #e8edf3;
    --text-primary: #1a1d23;
    --text-secondary: #5a6270;
    --text-muted: #8a92a0;
    --border-color: #e2e6ec;
    --border-light: #eef1f5;
    --accent: #4f6ef7;
    --accent-hover: #3b5de5;
    --accent-glow: rgba(79, 110, 247, 0.15);
    --danger: #ef4444;
    --danger-bg: #fef2f2;
    --danger-border: #fecaca;
    --success: #10b981;
    --success-bg: #ecfdf5;
    --success-border: #a7f3d0;
    --warning: #f59e0b;
    --warning-bg: #fffbeb;
    --warning-border: #fde68a;
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.06);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.08);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.1);
    --shadow-glow: 0 0 20px rgba(79, 110, 247, 0.12);
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 20px;
    --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* --- Dark Theme --- */
[data-theme="dark"] {
    --bg-primary: #0f1117;
    --bg-card: #1a1d27;
    --bg-card-hover: #22253a;
    --bg-input: #252838;
    --bg-badge: #2a2d3d;
    --text-primary: #e8eaf0;
    --text-secondary: #9ea3b0;
    --text-muted: #6b7080;
    --border-color: #2e3244;
    --border-light: #252838;
    --accent: #6b8aff;
    --accent-hover: #8da4ff;
    --accent-glow: rgba(107, 138, 255, 0.2);
    --danger: #f87171;
    --danger-bg: rgba(239, 68, 68, 0.1);
    --danger-border: rgba(239, 68, 68, 0.25);
    --success: #34d399;
    --success-bg: rgba(16, 185, 129, 0.1);
    --success-border: rgba(16, 185, 129, 0.25);
    --warning: #fbbf24;
    --warning-bg: rgba(245, 158, 11, 0.1);
    --warning-border: rgba(245, 158, 11, 0.25);
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.2);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.3);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.4);
    --shadow-glow: 0 0 30px rgba(107, 138, 255, 0.15);
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    line-height: 1.6;
    background: var(--bg-primary);
    color: var(--text-primary);
    min-height: 100vh;
    transition: background var(--transition), color var(--transition);
}

/* --- Background Pattern --- */
body::before {
    content: '';
    position: fixed;
    inset: 0;
    background:
        radial-gradient(circle at 20% 20%, var(--accent-glow) 0%, transparent 50%),
        radial-gradient(circle at 80% 80%, rgba(147, 51, 234, 0.06) 0%, transparent 50%);
    pointer-events: none;
    z-index: 0;
}

/* --- Layout --- */
.app-container {
    position: relative;
    z-index: 1;
    max-width: 800px;
    margin: 0 auto;
    padding: 24px 16px 48px;
    min-height: 100vh;
}

/* --- Header --- */
.app-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 32px;
    padding: 0 4px;
}

.app-title {
    display: flex;
    align-items: center;
    gap: 10px;
}

.app-title .icon {
    font-size: 28px;
    animation: pulse-icon 2s ease-in-out infinite;
}

@keyframes pulse-icon {

    0%,
    100% {
        transform: scale(1);
    }

    50% {
        transform: scale(1.1);
    }
}

.app-title h1 {
    font-size: 22px;
    font-weight: 700;
    letter-spacing: -0.02em;
    background: linear-gradient(135deg, var(--accent), #9333ea);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.version-tag {
    font-size: 11px;
    font-weight: 600;
    padding: 2px 8px;
    border-radius: 20px;
    background: var(--bg-badge);
    color: var(--text-muted);
    letter-spacing: 0.02em;
    user-select: none;
}

.header-controls {
    display: flex;
    align-items: center;
    gap: 6px;
}

/* --- Toggle Buttons --- */
.toggle-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    background: var(--bg-card);
    color: var(--text-secondary);
    cursor: pointer;
    font-size: 18px;
    transition: all var(--transition);
    user-select: none;
}

.toggle-btn:hover {
    background: var(--bg-card-hover);
    border-color: var(--accent);
    color: var(--accent);
    box-shadow: var(--shadow-glow);
    transform: translateY(-1px);
}

.toggle-btn:active {
    transform: translateY(0);
}

.lang-btn {
    width: auto;
    padding: 0 12px;
    font-size: 13px;
    font-weight: 600;
    letter-spacing: 0.02em;
}

/* --- Card --- */
.card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 28px;
    box-shadow: var(--shadow-md);
    transition: all var(--transition);
    margin-bottom: 20px;
}

.card:hover {
    box-shadow: var(--shadow-lg);
}

.card-header {
    margin-bottom: 20px;
}

.card-header p {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.7;
}

/* --- Check Button --- */
.check-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    width: 100%;
    padding: 14px 24px;
    font-family: inherit;
    font-size: 15px;
    font-weight: 600;
    color: white;
    background: linear-gradient(135deg, var(--accent), #7c3aed);
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition);
    position: relative;
    overflow: hidden;
}

.check-btn::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.15), transparent);
    opacity: 0;
    transition: opacity var(--transition);
}

.check-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 24px rgba(79, 110, 247, 0.35);
}

.check-btn:hover::before {
    opacity: 1;
}

.check-btn:active {
    transform: translateY(0);
}

.check-btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none;
    box-shadow: none;
}

.check-btn .spinner {
    display: none;
    width: 18px;
    height: 18px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-top-color: white;
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

.check-btn.loading .spinner {
    display: block;
}

.check-btn.loading .btn-text {
    opacity: 0.7;
}

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

/* --- Result Section --- */
.result-area {
    margin-top: 20px;
    animation: fadeSlideIn 0.4s ease-out;
}

@keyframes fadeSlideIn {
    from {
        opacity: 0;
        transform: translateY(12px);
    }

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

.result-card {
    border-radius: var(--radius-md);
    padding: 20px;
    border: 1px solid var(--border-color);
    background: var(--bg-card);
}

.result-card.safe {
    border-color: var(--success-border);
    background: var(--success-bg);
}

.result-card.warning {
    border-color: var(--danger-border);
    background: var(--danger-bg);
}

.result-card.proxy-warning {
    border-color: var(--warning-border);
    background: var(--warning-bg);
}

.result-status {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 16px;
    padding-bottom: 14px;
    border-bottom: 1px solid var(--border-light);
}

.result-status .status-icon {
    font-size: 24px;
}

.result-status .status-text {
    font-weight: 600;
    font-size: 15px;
}

.result-card.safe .status-text {
    color: var(--success);
}

.result-card.warning .status-text {
    color: var(--danger);
}

.result-card.proxy-warning .status-text {
    color: var(--warning);
}

.result-details {
    display: grid;
    gap: 10px;
}

.detail-row {
    display: flex;
    align-items: baseline;
    gap: 8px;
    font-size: 14px;
}

.detail-row .label {
    font-weight: 600;
    color: var(--text-secondary);
    white-space: nowrap;
    min-width: 70px;
}

.detail-row .value {
    color: var(--text-primary);
    word-break: break-all;
}

.result-message {
    margin-top: 14px;
    padding-top: 14px;
    border-top: 1px solid var(--border-light);
    font-size: 14px;
    line-height: 1.7;
    color: var(--text-secondary);
}

.result-card.safe .result-message {
    color: var(--success);
}

.result-card.warning .result-message {
    color: var(--danger);
}

.result-card.proxy-warning .result-message {
    color: var(--warning);
}

/* --- ASN Table --- */
.asn-card {
    margin-top: 20px;
}

.asn-card h3 {
    font-size: 15px;
    font-weight: 600;
    margin-bottom: 14px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.asn-table-wrapper {
    overflow-x: auto;
    border-radius: var(--radius-sm);
    border: 1px solid var(--border-color);
}

.asn-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 13px;
}

.asn-table thead {
    background: var(--bg-input);
}

.asn-table th {
    text-align: left;
    padding: 10px 14px;
    font-weight: 600;
    color: var(--text-secondary);
    font-size: 12px;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    border-bottom: 1px solid var(--border-color);
    white-space: nowrap;
}

.asn-table td {
    padding: 9px 14px;
    border-bottom: 1px solid var(--border-light);
    color: var(--text-primary);
    white-space: nowrap;
}

.asn-table tbody tr {
    transition: background var(--transition);
}

.asn-table tbody tr:hover {
    background: var(--bg-card-hover);
}

.asn-table tbody tr:last-child td {
    border-bottom: none;
}

.country-flag {
    margin-right: 4px;
}

.asn-badge {
    display: inline-block;
    padding: 2px 8px;
    border-radius: 4px;
    font-size: 12px;
    font-weight: 600;
    font-family: 'SF Mono', 'Fira Code', monospace;
    background: var(--bg-badge);
    color: var(--text-secondary);
}

/* --- Toggle ASN List --- */
.toggle-asn-btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 8px 16px;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    background: var(--bg-card);
    color: var(--text-secondary);
    font-family: inherit;
    font-size: 13px;
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition);
    margin-top: 4px;
}

.toggle-asn-btn:hover {
    border-color: var(--accent);
    color: var(--accent);
    background: var(--bg-card-hover);
}

.asn-list-content {
    display: none;
    margin-top: 14px;
}

.asn-list-content.show {
    display: block;
    animation: fadeSlideIn 0.3s ease-out;
}

/* --- Footer --- */
.app-footer {
    text-align: center;
    margin-top: 32px;
    padding-top: 20px;
    border-top: 1px solid var(--border-light);
    font-size: 12px;
    color: var(--text-muted);
}

.app-footer a {
    color: var(--accent);
    text-decoration: none;
}

.app-footer a:hover {
    text-decoration: underline;
}

/* --- Responsive --- */
@media (max-width: 480px) {
    .app-container {
        padding: 16px 12px 32px;
    }

    .card {
        padding: 20px;
    }

    .app-title h1 {
        font-size: 18px;
    }

    .detail-row {
        flex-direction: column;
        gap: 2px;
    }

    .detail-row .label {
        min-width: auto;
    }

    .asn-table th,
    .asn-table td {
        padding: 8px 10px;
    }
}