/* ==============================
   CSS Minifier Tool — Styles
   Premium dark theme
   ============================== */

/* --- Custom Properties --- */
:root {
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-mono: 'JetBrains Mono', 'Fira Code', 'Consolas', monospace;

    --color-bg: #0F0A1A;
    --color-surface: #1A1429;
    --color-surface-2: #241D35;
    --color-border: rgba(108, 99, 255, 0.15);
    --color-border-hover: rgba(108, 99, 255, 0.35);

    --color-primary: #6C63FF;
    --color-primary-glow: rgba(108, 99, 255, 0.25);
    --color-accent: #48CFCB;
    --color-accent-glow: rgba(72, 207, 203, 0.2);

    --color-text: #E8E4F0;
    --color-text-muted: #9B93A8;
    --color-text-dim: #6B6380;

    --color-success: #4ADE80;
    --color-warning: #FBBF24;

    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 20px;

    --shadow-card: 0 4px 24px rgba(0, 0, 0, 0.3), 0 1px 4px rgba(0, 0, 0, 0.2);
    --shadow-glow: 0 0 30px var(--color-primary-glow);

    --transition-fast: 0.15s ease;
    --transition-med: 0.25s ease;
    --transition-slow: 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

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

html {
    font-size: 16px;
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-sans);
    background: var(--color-bg);
    color: var(--color-text);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    line-height: 1.6;
    background-image:
        radial-gradient(ellipse at 20% 0%, rgba(108, 99, 255, 0.08) 0%, transparent 50%),
        radial-gradient(ellipse at 80% 100%, rgba(72, 207, 203, 0.06) 0%, transparent 50%);
}

/* --- Header --- */
.header {
    padding: 1.5rem 2rem;
    border-bottom: 1px solid var(--color-border);
    backdrop-filter: blur(12px);
    background: rgba(15, 10, 26, 0.7);
    position: sticky;
    top: 0;
    z-index: 50;
}

.header-inner {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.logo-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: var(--radius-sm);
    background: rgba(108, 99, 255, 0.1);
    border: 1px solid var(--color-border);
    transition: transform var(--transition-med), box-shadow var(--transition-med);
}

.logo-icon:hover {
    transform: scale(1.05) rotate(-2deg);
    box-shadow: var(--shadow-glow);
}

.logo-text {
    font-size: 1.25rem;
    font-weight: 700;
    background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    letter-spacing: -0.02em;
}

.header-tagline {
    font-size: 0.85rem;
    color: var(--color-text-muted);
    font-weight: 400;
}

/* --- Main --- */
.main {
    flex: 1;
    max-width: 1200px;
    margin: 0 auto;
    padding: 1.5rem 2rem 3rem;
    width: 100%;
}

/* --- Stats Bar --- */
.stats-bar {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.stat-card {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: 1rem 1.25rem;
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
    transition: border-color var(--transition-med), transform var(--transition-med);
}

.stat-card:hover {
    border-color: var(--color-border-hover);
    transform: translateY(-1px);
}

.stat-card--accent {
    background: linear-gradient(135deg, rgba(108, 99, 255, 0.12), rgba(72, 207, 203, 0.08));
    border-color: rgba(108, 99, 255, 0.25);
}

.stat-label {
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--color-text-muted);
    font-weight: 500;
}

.stat-value {
    font-size: 1.5rem;
    font-weight: 700;
    font-family: var(--font-mono);
    color: var(--color-text);
    transition: color var(--transition-med);
}

.stat-card--accent .stat-value {
    background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* --- Editor Wrapper --- */
.editor-wrapper {
    display: grid;
    grid-template-columns: 1fr auto 1fr;
    gap: 0;
    margin-bottom: 1.5rem;
}

.editor-panel {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    overflow: hidden;
    display: flex;
    flex-direction: column;
    transition: border-color var(--transition-med), box-shadow var(--transition-med);
}

.editor-panel:focus-within {
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px var(--color-primary-glow);
}

.panel-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.75rem 1rem;
    border-bottom: 1px solid var(--color-border);
    background: rgba(255, 255, 255, 0.02);
    flex-wrap: wrap;
    gap: 0.5rem;
}

.panel-title {
    font-size: 0.8rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: var(--color-text-muted);
}

.panel-actions {
    display: flex;
    gap: 0.25rem;
}

.editor-textarea {
    flex: 1;
    min-height: 350px;
    padding: 1.25rem;
    background: transparent;
    border: none;
    color: var(--color-text);
    font-family: var(--font-mono);
    font-size: 0.85rem;
    line-height: 1.7;
    resize: vertical;
    tab-size: 2;
    outline: none;
    width: 100%;
}

.editor-textarea::placeholder {
    color: var(--color-text-dim);
}

.editor-textarea--output {
    color: var(--color-accent);
    cursor: default;
}

/* --- Editor Divider --- */
.editor-divider {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0 0.75rem;
}

/* --- Buttons --- */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    border: none;
    border-radius: var(--radius-sm);
    font-family: var(--font-sans);
    font-size: 0.8rem;
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-fast);
    white-space: nowrap;
}

.btn--ghost {
    background: transparent;
    color: var(--color-text-muted);
    padding: 0.4rem 0.65rem;
}

.btn--ghost:hover {
    background: rgba(108, 99, 255, 0.1);
    color: var(--color-text);
}

.btn--ghost:active {
    transform: scale(0.96);
}

.btn--primary {
    background: linear-gradient(135deg, var(--color-primary), #8B83FF);
    color: #fff;
    padding: 0.75rem 1.5rem;
    font-size: 0.9rem;
    font-weight: 600;
    border-radius: var(--radius-md);
    box-shadow: 0 4px 16px var(--color-primary-glow);
}

.btn--primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 24px var(--color-primary-glow), var(--shadow-glow);
}

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

.btn--minify {
    writing-mode: horizontal-tb;
}

/* --- Options Bar --- */
.options-bar {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem 1.5rem;
    padding: 1.25rem 1.5rem;
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
}

.toggle-option {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    cursor: pointer;
    user-select: none;
}

.toggle-option input[type="checkbox"] {
    display: none;
}

.toggle-slider {
    position: relative;
    width: 36px;
    height: 20px;
    background: var(--color-surface-2);
    border: 1px solid var(--color-border);
    border-radius: 999px;
    transition: all var(--transition-fast);
    flex-shrink: 0;
}

.toggle-slider::after {
    content: '';
    position: absolute;
    top: 2px;
    left: 2px;
    width: 14px;
    height: 14px;
    background: var(--color-text-muted);
    border-radius: 50%;
    transition: all var(--transition-med);
}

.toggle-option input:checked+.toggle-slider {
    background: var(--color-primary);
    border-color: var(--color-primary);
}

.toggle-option input:checked+.toggle-slider::after {
    left: 18px;
    background: #fff;
}

.toggle-label {
    font-size: 0.85rem;
    color: var(--color-text-muted);
    transition: color var(--transition-fast);
}

.toggle-option:hover .toggle-label {
    color: var(--color-text);
}

/* --- Toast --- */
.toast {
    position: fixed;
    bottom: 2rem;
    left: 50%;
    transform: translateX(-50%) translateY(120%);
    background: var(--color-surface-2);
    border: 1px solid var(--color-border);
    color: var(--color-text);
    padding: 0.75rem 1.25rem;
    border-radius: var(--radius-md);
    font-size: 0.85rem;
    font-weight: 500;
    box-shadow: var(--shadow-card);
    opacity: 0;
    pointer-events: none;
    transition: all var(--transition-slow);
    z-index: 100;
    backdrop-filter: blur(12px);
}

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

.toast.toast--success {
    border-color: rgba(74, 222, 128, 0.3);
    background: linear-gradient(135deg, rgba(74, 222, 128, 0.1), var(--color-surface-2));
}

/* --- Footer --- */
.footer {
    text-align: center;
    padding: 1.5rem 2rem;
    border-top: 1px solid var(--color-border);
    color: var(--color-text-dim);
    font-size: 0.8rem;
}

/* --- Responsive --- */
@media (max-width: 900px) {
    .editor-wrapper {
        grid-template-columns: 1fr;
        gap: 1rem;
    }

    .editor-divider {
        padding: 0.5rem 0;
    }

    .btn--minify {
        width: 100%;
        justify-content: center;
        padding: 0.85rem;
    }
}

@media (max-width: 640px) {
    .header {
        padding: 1rem 1rem;
    }

    .header-inner {
        flex-direction: column;
        align-items: flex-start;
        gap: 0.25rem;
    }

    .main {
        padding: 1rem 1rem 2rem;
    }

    .stats-bar {
        grid-template-columns: 1fr;
    }

    .stat-card {
        flex-direction: row;
        align-items: center;
        justify-content: space-between;
    }

    .stat-value {
        font-size: 1.15rem;
    }

    .editor-textarea {
        min-height: 200px;
    }

    .options-bar {
        gap: 0.75rem 1rem;
        padding: 1rem;
    }

    .panel-actions {
        flex-wrap: wrap;
    }
}

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

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

.stats-bar,
.editor-wrapper,
.options-bar {
    animation: fadeIn 0.5s var(--transition-slow) backwards;
}

.editor-wrapper {
    animation-delay: 0.1s;
}

.options-bar {
    animation-delay: 0.2s;
}