/* ===================================
   HTML Table to CSV — Styles
   Dark/Light mode, Accent Purple
   =================================== */

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

:root {
    --primary: #8B5CF6;
    --primary-light: #A78BFA;
    --primary-dark: #7C3AED;
    --accent: #F59E0B;
    --bg-900: #0F0A1A;
    --bg-800: #150F24;
    --bg-700: #1C1530;
    --bg-600: #261E3D;
    --bg-500: #332A4E;
    --text-100: #F0ECF8;
    --text-200: #C8BFE0;
    --text-300: #8A7FAA;
    --border: rgba(139, 92, 246, 0.12);
    --glass: rgba(15, 10, 26, 0.9);
    --glass-border: rgba(139, 92, 246, 0.15);
    --success: #22C55E;
    --shadow: 0 4px 24px rgba(0, 0, 0, 0.4);
    --radius: 12px;
    --radius-sm: 8px;
    --font: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    --mono: 'JetBrains Mono', monospace;
    --transition: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Light theme */
[data-theme="light"] {
    --bg-900: #F5F3FF;
    --bg-800: #FFFFFF;
    --bg-700: #EDE9FE;
    --bg-600: #DDD6FE;
    --bg-500: #C4B5FD;
    --text-100: #1E1B4B;
    --text-200: #3730A3;
    --text-300: #6D28D9;
    --border: rgba(139, 92, 246, 0.2);
    --glass: rgba(255, 255, 255, 0.95);
    --glass-border: rgba(139, 92, 246, 0.2);
    --shadow: 0 4px 24px rgba(139, 92, 246, 0.1);
}

html,
body {
    min-height: 100vh;
    background: var(--bg-900);
    color: var(--text-100);
    font-family: var(--font);
    font-size: 14px;
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

::-webkit-scrollbar {
    width: 6px;
}

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

::-webkit-scrollbar-thumb {
    background: var(--bg-500);
    border-radius: 3px;
}

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

/* --- Header --- */
.header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 14px 24px;
    background: var(--bg-800);
    border-bottom: 1px solid var(--border);
}

.header-left {
    display: flex;
    align-items: center;
    gap: 10px;
}

.logo {
    font-size: 24px;
}

.app-title {
    font-size: 18px;
    font-weight: 700;
    background: linear-gradient(135deg, var(--primary), var(--primary-light));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.header-right {
    display: flex;
    gap: 8px;
}

/* --- Buttons --- */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 8px 16px;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    font-size: 13px;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
    font-family: var(--font);
    white-space: nowrap;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    color: #fff;
    border: none;
    box-shadow: 0 2px 12px rgba(139, 92, 246, 0.3);
}

.btn-primary:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 20px rgba(139, 92, 246, 0.4);
}

.btn-secondary {
    background: var(--bg-700);
    color: var(--text-200);
}

.btn-secondary:hover {
    background: var(--bg-600);
    border-color: var(--primary);
}

.btn-icon {
    background: var(--bg-700);
    color: var(--text-200);
    width: 38px;
    height: 38px;
    padding: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
    border-radius: 50%;
}

.btn-icon:hover {
    background: var(--bg-600);
}

.btn-sm {
    padding: 6px 12px;
    font-size: 12px;
}

/* --- Main --- */
.main {
    max-width: 900px;
    margin: 0 auto;
    padding: 24px;
    display: flex;
    flex-direction: column;
    gap: 20px;
}

/* --- Card --- */
.card {
    background: var(--bg-800);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 20px;
    box-shadow: var(--shadow);
    animation: fadeIn 0.3s ease-out;
}

.card.hidden {
    display: none;
}

.card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 14px;
    flex-wrap: wrap;
    gap: 10px;
}

.card-title {
    font-size: 14px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: var(--text-300);
}

.card-actions {
    display: flex;
    gap: 6px;
}

/* --- Code Input --- */
.code-input {
    width: 100%;
    padding: 14px;
    background: var(--bg-700);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    color: var(--text-100);
    font-family: var(--mono);
    font-size: 13px;
    line-height: 1.6;
    resize: vertical;
    outline: none;
    transition: var(--transition);
}

.code-input:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(139, 92, 246, 0.15);
}

.code-input::placeholder {
    color: var(--text-300);
}

.input-info {
    margin-top: 8px;
    font-size: 12px;
    color: var(--text-300);
}

/* --- Badge --- */
.badge {
    display: inline-flex;
    padding: 3px 10px;
    background: var(--bg-600);
    border-radius: 10px;
    font-size: 11px;
    color: var(--primary-light);
    font-weight: 500;
}

/* --- Preview --- */
.preview-container {
    overflow-x: auto;
    border-radius: var(--radius-sm);
}

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

.preview-container th,
.preview-container td {
    padding: 8px 14px;
    text-align: left;
    border: 1px solid var(--border);
}

.preview-container th {
    background: var(--bg-600);
    font-weight: 600;
    color: var(--primary-light);
    font-size: 12px;
    text-transform: uppercase;
    letter-spacing: 0.04em;
}

.preview-container td {
    background: var(--bg-700);
    color: var(--text-200);
}

.preview-container tr:hover td {
    background: var(--bg-600);
}

/* --- Tabs --- */
.format-tabs {
    display: flex;
    gap: 4px;
    background: var(--bg-700);
    padding: 3px;
    border-radius: var(--radius-sm);
}

.tab {
    padding: 6px 14px;
    border: none;
    border-radius: 6px;
    background: transparent;
    color: var(--text-300);
    font-size: 12px;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
    font-family: var(--font);
}

.tab:hover {
    color: var(--text-100);
}

.tab.active {
    background: var(--primary);
    color: #fff;
    box-shadow: 0 0 8px rgba(139, 92, 246, 0.3);
}

/* --- Output --- */
.output-wrapper {
    position: relative;
}

.code-output {
    width: 100%;
    padding: 14px;
    background: var(--bg-700);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    color: var(--text-100);
    font-family: var(--mono);
    font-size: 12px;
    line-height: 1.6;
    white-space: pre-wrap;
    word-break: break-word;
    max-height: 400px;
    overflow-y: auto;
    margin-bottom: 12px;
}

.output-actions {
    display: flex;
    gap: 8px;
}

/* --- Footer --- */
.footer {
    text-align: center;
    padding: 20px;
    color: var(--text-300);
    font-size: 12px;
}

/* --- Toast --- */
.toast {
    position: fixed;
    bottom: 24px;
    left: 50%;
    transform: translateX(-50%) translateY(100px);
    padding: 10px 24px;
    background: var(--glass);
    border: 1px solid var(--glass-border);
    border-radius: 20px;
    backdrop-filter: blur(16px);
    color: var(--primary-light);
    font-size: 13px;
    font-weight: 500;
    z-index: 1000;
    opacity: 0;
    pointer-events: none;
    transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1), opacity 0.4s;
}

.toast.show {
    opacity: 1;
    transform: translateX(-50%) translateY(0);
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(8px);
    }

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

/* --- Responsive --- */
@media (max-width: 600px) {
    .main {
        padding: 16px;
    }

    .header {
        padding: 10px 16px;
    }

    .card {
        padding: 14px;
    }

    .card-header {
        flex-direction: column;
        align-items: flex-start;
    }

    .output-actions {
        flex-direction: column;
    }

    .btn {
        width: 100%;
        justify-content: center;
    }
}