:root {
            --bg-gradient: linear-gradient(135deg, #eef2f3 0%, #8e9eab 100%);
            --card-bg: #ffffff;
            --text-color: #2d3748;
            --text-muted: #718096;
            --border-color: #e2e8f0;
            --input-bg: #f8fafc;
            --stat-bg: #f7fafc;
            --accent-color: #4f46e5;
            --accent-hover: #4338ca;
            --danger-bg: #fee2e2;
            --danger-color: #dc2626;
            --btn-secondary-bg: #edf2f7;
            --btn-secondary-text: #4a5568;
            --btn-secondary-hover: #e2e8f0;
            --shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
        }

        [data-theme="dark"] {
            --bg-gradient: linear-gradient(135deg, #0f172a 0%, #1e293b 100%);
            --card-bg: #1e293b;
            --text-color: #f1f5f9;
            --text-muted: #94a3b8;
            --border-color: #334155;
            --input-bg: #0f172a;
            --stat-bg: #0f172a;
            --accent-color: #6366f1;
            --accent-hover: #818cf8;
            --danger-bg: #451a1a;
            --danger-color: #f87171;
            --btn-secondary-bg: #334155;
            --btn-secondary-text: #cbd5e1;
            --btn-secondary-hover: #475569;
            --shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.5);
        }

        * {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
            font-family: 'Segoe UI', system-ui, -apple-system, Roboto, sans-serif;
            transition: background-color 0.3s ease, color 0.3s ease, border-color 0.3s ease;
        }

        body {
            background: var(--bg-gradient);
            min-height: 100vh;
            display: flex;
            flex-direction: column;
            justify-content: center;
            align-items: center;
            padding: 24px;
        }

        .container {
            background: var(--card-bg);
            width: 100%;
            max-width: 920px;
            border-radius: 24px;
            padding: 32px;
            box-shadow: var(--shadow);
            border: 1px solid var(--border-color);
        }

        .header {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-bottom: 24px;
            flex-wrap: wrap;
            gap: 12px;
        }

        h1 {
            color: var(--text-color);
            font-size: 1.75rem;
            font-weight: 700;
        }

        .top-controls {
            display: flex;
            gap: 10px;
        }

        .icon-btn {
            background: var(--btn-secondary-bg);
            color: var(--btn-secondary-text);
            border: 1px solid var(--border-color);
            padding: 8px 14px;
            border-radius: 12px;
            cursor: pointer;
            font-weight: 600;
            font-size: 0.88rem;
            display: flex;
            align-items: center;
            gap: 6px;
        }

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

        .stats-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
            gap: 16px;
            margin-bottom: 24px;
        }

        .stat-card {
            background: var(--stat-bg);
            border-radius: 16px;
            padding: 16px;
            text-align: center;
            border: 1px solid var(--border-color);
        }

        .stat-value {
            font-size: 2rem;
            font-weight: 800;
            color: var(--accent-color);
            margin-bottom: 4px;
        }

        .stat-label {
            font-size: 0.8rem;
            color: var(--text-muted);
            text-transform: uppercase;
            letter-spacing: 0.8px;
            font-weight: 600;
        }

        .file-toolbar {
            background: var(--stat-bg);
            border: 1px solid var(--border-color);
            border-radius: 16px;
            padding: 16px;
            margin-bottom: 20px;
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            align-items: center;
            justify-content: space-between;
        }

        .file-upload-wrapper input[type="file"] {
            display: none;
        }

        .export-controls {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            align-items: center;
            width: 100%;
        }

        .input-group {
            display: flex;
            align-items: center;
            gap: 8px;
            flex: 1;
            min-width: 220px;
        }

        .input-group label {
            font-size: 0.85rem;
            color: var(--text-muted);
            font-weight: 600;
            white-space: nowrap;
        }

        input[type="text"], select {
            background: var(--input-bg);
            color: var(--text-color);
            border: 1px solid var(--border-color);
            padding: 10px 14px;
            border-radius: 10px;
            font-size: 0.9rem;
            outline: none;
            width: 100%;
        }

        input[type="text"]:focus, select:focus {
            border-color: var(--accent-color);
        }

        select {
            min-width: 110px;
            cursor: pointer;
        }

        textarea {
            width: 100%;
            height: 280px;
            padding: 18px;
            background: var(--input-bg);
            color: var(--text-color);
            border: 2px solid var(--border-color);
            border-radius: 16px;
            font-size: 1rem;
            line-height: 1.6;
            resize: vertical;
            outline: none;
        }

        textarea:focus {
            border-color: var(--accent-color);
        }

        .actions {
            display: flex;
            gap: 12px;
            margin-top: 20px;
            justify-content: flex-end;
            flex-wrap: wrap;
        }

        .btn {
            padding: 10px 20px;
            border: none;
            border-radius: 10px;
            font-size: 0.95rem;
            font-weight: 600;
            cursor: pointer;
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }

        .btn-clear {
            background: var(--danger-bg);
            color: var(--danger-color);
        }

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

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

        .footer {
            margin-top: 20px;
            text-align: center;
            font-size: 0.85rem;
            color: var(--text-muted);
            font-weight: 500;
        }

        .toast {
            position: fixed;
            bottom: 24px;
            right: 24px;
            background: var(--text-color);
            color: var(--card-bg);
            padding: 12px 24px;
            border-radius: 12px;
            font-weight: 600;
            font-size: 0.9rem;
            display: none;
            box-shadow: 0 10px 15px -3px rgba(0,0,0,0.3);
            z-index: 1000;
        }

/* ================================
   Cookie Consent
   ================================ */
.cookie-consent {
    position: fixed;
    left: 24px;
    right: 24px;
    bottom: 24px;
    z-index: 2000;
    display: none;
    animation: cookieSlideUp 0.35s ease;
}

.cookie-consent.show {
    display: block;
}

.cookie-content {
    max-width: 920px;
    margin: 0 auto;
    background: var(--card-bg);
    color: var(--text-color);
    border: 1px solid var(--border-color);
    border-radius: 18px;
    padding: 18px 20px;
    box-shadow: 0 20px 35px rgba(0, 0, 0, 0.18);
    display: grid;
    grid-template-columns: auto 1fr auto;
    align-items: center;
    gap: 16px;
}

.cookie-icon {
    font-size: 2rem;
}

.cookie-text h2 {
    font-size: 1rem;
    margin-bottom: 5px;
}

.cookie-text p {
    color: var(--text-muted);
    font-size: 0.88rem;
    line-height: 1.5;
    margin-bottom: 5px;
}
.cookie-actions {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
    justify-content: flex-end;
}

.cookie-btn {
    border: 1px solid var(--border-color);
    border-radius: 10px;
    padding: 9px 14px;
    cursor: pointer;
    font-weight: 700;
    font-size: 0.85rem;
}

.cookie-reject {
    background: var(--btn-secondary-bg);
    color: var(--btn-secondary-text);
}

.cookie-accept {
    background: var(--accent-color);
    color: white;
    border-color: var(--accent-color);
}
@keyframes cookieSlideUp {
    from {
        opacity: 0;
        transform: translateY(18px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@media (max-width: 700px) {
    .cookie-consent {
        left: 12px;
        right: 12px;
        bottom: 12px;
    }

    .cookie-content {
        grid-template-columns: 1fr;
        gap: 10px;
        padding: 16px;
    }

    .cookie-icon {
        display: none;
    }

    .cookie-actions {
        justify-content: stretch;
    }

    .cookie-btn {
        flex: 1;
    }
}

/* Copyright */
.copyright {
    margin-top: 8px;
    text-align: center;
    color: var(--text-muted);
    font-size: 0.82rem;
}

.author-credit {
    margin-top: 8px;
    text-align: center;
    color: var(--text-muted);
    font-size: 0.84rem;
}