/* ============================================================
   ScrubScript — The Auto-Transcript Sanitizer
   Dark developer-tool aesthetic · VS Code / terminal vibes
   ============================================================ */

/* ===== CSS CUSTOM PROPERTIES ===== */
:root {
    /* Colors */
    --bg-primary: #0d1117;
    --bg-secondary: #161b22;
    --bg-tertiary: #1c2128;
    --bg-panel: #0d1117;
    --bg-input: #0a0e14;
    --bg-hover: #21262d;
    --bg-active: #1a2332;

    --text-primary: #e6edf3;
    --text-secondary: #8b949e;
    --text-muted: #484f58;
    --text-placeholder: #3d444d;

    --accent-green: #58d68d;
    --accent-green-dim: #2ea04370;
    --accent-green-glow: #58d68d33;
    --accent-red: #e74c3c;
    --accent-red-dim: #e74c3c30;
    --accent-blue: #58a6ff;
    --accent-orange: #d29922;
    --accent-purple: #bc8cff;

    --border-primary: #30363d;
    --border-subtle: #21262d;
    --border-accent: #58d68d40;

    /* Typography */
    --font-mono: 'JetBrains Mono', 'Fira Code', 'Cascadia Code', 'Consolas', monospace;
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;

    /* Spacing */
    --container-max: 1200px;
    --gap-xs: 0.25rem;
    --gap-sm: 0.5rem;
    --gap-md: 1rem;
    --gap-lg: 1.5rem;
    --gap-xl: 2rem;
    --gap-2xl: 3rem;

    /* Borders & Radius */
    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 14px;
    --radius-pill: 50px;

    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-base: 250ms ease;
    --transition-slow: 400ms ease;

    /* Shadows */
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 8px 30px rgba(0, 0, 0, 0.5);
    --shadow-glow-green: 0 0 20px var(--accent-green-glow);
}

/* ===== 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-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
    overflow-x: hidden;
}

.container {
    width: 100%;
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--gap-md);
}

/* ===== HEADER ===== */
.site-header {
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border-primary);
    padding: var(--gap-lg) 0;
    position: sticky;
    top: 0;
    z-index: 100;
    backdrop-filter: blur(12px);
    background: rgba(22, 27, 34, 0.92);
}

.site-header .container {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--gap-sm);
}

.header-brand {
    text-align: center;
}

.logo {
    display: flex;
    align-items: center;
    gap: var(--gap-sm);
    justify-content: center;
}

.logo-icon {
    font-family: var(--font-mono);
    font-size: 1.4rem;
    font-weight: 700;
    color: var(--accent-green);
    background: var(--accent-green-dim);
    padding: 0.25rem 0.5rem;
    border-radius: var(--radius-sm);
    letter-spacing: -1px;
}

.logo-text {
    font-family: var(--font-mono);
    font-size: 1.6rem;
    font-weight: 700;
    color: var(--text-primary);
    letter-spacing: -0.5px;
}

.logo-text .accent {
    color: var(--accent-green);
}

.tagline {
    font-size: 0.8rem;
    color: var(--text-secondary);
    font-weight: 500;
    letter-spacing: 1px;
    text-transform: uppercase;
    margin-top: var(--gap-xs);
}

.header-badge {
    display: flex;
    align-items: center;
    gap: var(--gap-xs);
    background: var(--bg-tertiary);
    border: 1px solid var(--border-primary);
    padding: 0.3rem 0.75rem;
    border-radius: var(--radius-pill);
    font-size: 0.7rem;
    color: var(--text-secondary);
}

.badge-icon {
    font-size: 0.8rem;
}

/* ===== AD PLACEHOLDERS ===== */
.ad-placeholder {
    border: 2px dashed var(--border-primary);
    color: var(--text-muted);
    font-size: 0.75rem;
    font-family: var(--font-mono);
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-secondary);
    border-radius: var(--radius-sm);
    margin-bottom: var(--gap-lg);
    text-transform: uppercase;
    letter-spacing: 1px;
}

.ad-desktop {
    width: 728px;
    height: 90px;
    max-width: 100%;
    margin-left: auto;
    margin-right: auto;
    display: none;
}

.ad-mobile {
    width: 320px;
    height: 50px;
    max-width: 100%;
    margin-left: auto;
    margin-right: auto;
}

/* ===== SECTION TITLES ===== */
.section-title {
    font-family: var(--font-mono);
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 1.5px;
    margin-bottom: var(--gap-md);
    display: flex;
    align-items: center;
    gap: var(--gap-sm);
}

.section-title::after {
    content: '';
    flex: 1;
    height: 1px;
    background: var(--border-primary);
}

/* ===== PRESETS ===== */
.presets-section {
    margin-bottom: var(--gap-xl);
    padding-top: var(--gap-xl);
}

.presets-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--gap-sm);
}

.preset-btn {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--gap-xs);
    padding: var(--gap-sm) var(--gap-xs);
    background: var(--bg-secondary);
    border: 1px solid var(--border-primary);
    border-radius: var(--radius-md);
    color: var(--text-secondary);
    font-family: var(--font-sans);
    font-size: 0.75rem;
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-base);
    outline: none;
}

.preset-btn:hover {
    background: var(--bg-hover);
    border-color: var(--accent-green);
    color: var(--text-primary);
    transform: translateY(-1px);
}

.preset-btn.active {
    background: var(--bg-active);
    border-color: var(--accent-green);
    color: var(--accent-green);
    box-shadow: var(--shadow-glow-green);
}

.preset-icon {
    font-size: 1.3rem;
}

.preset-label {
    white-space: nowrap;
}

/* ===== PIPELINE TOGGLES ===== */
.pipeline-section {
    margin-bottom: var(--gap-xl);
}

.pipeline-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--gap-sm);
}

.toggle-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--gap-md);
    padding: var(--gap-sm) var(--gap-md);
    background: var(--bg-secondary);
    border: 1px solid var(--border-primary);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-fast);
    user-select: none;
}

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

.toggle-info {
    display: flex;
    flex-direction: column;
    gap: 2px;
    min-width: 0;
    flex: 1;
}

.toggle-name {
    font-weight: 600;
    font-size: 0.85rem;
    color: var(--text-primary);
}

.toggle-desc {
    font-size: 0.7rem;
    color: var(--text-secondary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

/* Pill Switch */
.toggle-input {
    position: absolute;
    opacity: 0;
    width: 0;
    height: 0;
}

.toggle-switch {
    position: relative;
    width: 44px;
    min-width: 44px;
    height: 24px;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-primary);
    border-radius: var(--radius-pill);
    transition: all var(--transition-base);
    flex-shrink: 0;
}

.toggle-switch::after {
    content: '';
    position: absolute;
    top: 2px;
    left: 2px;
    width: 18px;
    height: 18px;
    background: var(--text-muted);
    border-radius: 50%;
    transition: all var(--transition-base);
}

.toggle-input:checked + .toggle-switch {
    background: var(--accent-green-dim);
    border-color: var(--accent-green);
}

.toggle-input:checked + .toggle-switch::after {
    background: var(--accent-green);
    transform: translateX(20px);
    box-shadow: 0 0 8px var(--accent-green-glow);
}

/* ===== WORKSPACE ===== */
.workspace-section {
    margin-bottom: var(--gap-xl);
    display: flex;
    flex-direction: column;
    gap: var(--gap-lg);
}

.panel {
    background: var(--bg-secondary);
    border: 1px solid var(--border-primary);
    border-radius: var(--radius-lg);
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

.panel-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--gap-sm) var(--gap-md);
    border-bottom: 1px solid var(--border-primary);
    background: var(--bg-tertiary);
    flex-wrap: wrap;
    gap: var(--gap-sm);
}

.panel-title {
    font-family: var(--font-mono);
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    gap: var(--gap-sm);
    text-transform: uppercase;
    letter-spacing: 1px;
}

.panel-icon {
    font-size: 1rem;
}

.input-meta {
    display: flex;
    align-items: center;
    gap: var(--gap-sm);
    font-family: var(--font-mono);
    font-size: 0.7rem;
    color: var(--text-muted);
}

.meta-sep {
    color: var(--border-primary);
}

.editor-wrapper {
    position: relative;
    flex: 1;
    min-height: 0;
}

.editor-area {
    width: 100%;
    min-height: 220px;
    max-height: 500px;
    padding: var(--gap-md);
    background: var(--bg-input);
    color: var(--text-primary);
    font-family: var(--font-mono);
    font-size: 0.82rem;
    line-height: 1.7;
    border: none;
    outline: none;
    resize: vertical;
    overflow-y: auto;
    tab-size: 4;
}

textarea.editor-area {
    display: block;
}

textarea.editor-area::placeholder {
    color: var(--text-placeholder);
    opacity: 1;
}

/* Output display */
.output-display {
    display: none;
    overflow-y: auto;
    white-space: pre-wrap;
    word-wrap: break-word;
    resize: vertical;
}

.output-display.active {
    display: block;
}

.output-placeholder {
    color: var(--text-muted);
    font-style: italic;
}

/* Diff styles */
.diff-removed {
    background: var(--accent-red-dim);
    color: var(--accent-red);
    text-decoration: line-through;
    text-decoration-color: var(--accent-red);
    border-radius: 3px;
    padding: 0 2px;
}

.diff-kept {
    color: var(--text-primary);
}

/* Scrollbar styling */
.editor-area::-webkit-scrollbar {
    width: 8px;
}

.editor-area::-webkit-scrollbar-track {
    background: var(--bg-input);
}

.editor-area::-webkit-scrollbar-thumb {
    background: var(--border-primary);
    border-radius: 4px;
}

.editor-area::-webkit-scrollbar-thumb:hover {
    background: var(--text-muted);
}

/* Drag & Drop Overlay */
.drop-overlay {
    position: absolute;
    inset: 0;
    background: rgba(88, 214, 141, 0.08);
    border: 2px dashed var(--accent-green);
    border-radius: var(--radius-md);
    display: none;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: var(--gap-sm);
    z-index: 10;
    pointer-events: none;
}

.drop-overlay.visible {
    display: flex;
}

.drop-icon {
    font-size: 2.5rem;
    animation: dropBounce 1s ease infinite;
}

.drop-text {
    font-family: var(--font-mono);
    font-size: 0.9rem;
    color: var(--accent-green);
    font-weight: 600;
}

@keyframes dropBounce {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-8px); }
}

/* View Tabs */
.view-tabs {
    display: flex;
    gap: 2px;
    background: var(--bg-primary);
    border-radius: var(--radius-sm);
    padding: 2px;
}

.tab-btn {
    padding: 0.3rem 0.8rem;
    font-family: var(--font-mono);
    font-size: 0.7rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--text-muted);
    background: transparent;
    border: none;
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all var(--transition-fast);
    outline: none;
}

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

.tab-btn.active {
    background: var(--bg-tertiary);
    color: var(--accent-green);
}

/* ===== ACTION BUTTONS ===== */
.actions-bar {
    display: flex;
    flex-wrap: wrap;
    gap: var(--gap-sm);
    justify-content: center;
    padding: var(--gap-sm) 0;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: var(--gap-xs);
    padding: 0.6rem 1rem;
    font-family: var(--font-mono);
    font-size: 0.78rem;
    font-weight: 600;
    border: 1px solid var(--border-primary);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-base);
    outline: none;
    white-space: nowrap;
}

.btn:disabled {
    opacity: 0.35;
    cursor: not-allowed;
    transform: none !important;
}

.btn-icon {
    font-size: 0.95rem;
}

.btn-primary {
    background: var(--accent-green);
    color: var(--bg-primary);
    border-color: var(--accent-green);
    box-shadow: var(--shadow-glow-green);
}

.btn-primary:hover:not(:disabled) {
    background: #6ade9a;
    transform: translateY(-2px);
    box-shadow: 0 0 30px var(--accent-green-glow);
}

.btn-primary:active:not(:disabled) {
    transform: translateY(0);
}

.btn-clean {
    animation: pulseBtnGlow 2.5s ease-in-out infinite;
}

@keyframes pulseBtnGlow {
    0%, 100% { box-shadow: 0 0 15px var(--accent-green-glow); }
    50% { box-shadow: 0 0 30px var(--accent-green-glow), 0 0 50px rgba(88, 214, 141, 0.1); }
}

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

.btn-secondary:hover:not(:disabled) {
    background: var(--bg-hover);
    color: var(--text-primary);
    border-color: var(--accent-blue);
    transform: translateY(-1px);
}

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

.btn-danger:hover:not(:disabled) {
    background: var(--accent-red-dim);
    color: var(--accent-red);
    border-color: var(--accent-red);
    transform: translateY(-1px);
}

/* ===== STATS ===== */
.stats-section {
    margin-bottom: var(--gap-xl);
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--gap-sm);
}

.stat-card {
    background: var(--bg-secondary);
    border: 1px solid var(--border-primary);
    border-radius: var(--radius-md);
    padding: var(--gap-md);
    text-align: center;
    display: flex;
    flex-direction: column;
    gap: 2px;
    transition: all var(--transition-base);
}

.stat-card.highlight {
    border-color: var(--accent-green);
    box-shadow: var(--shadow-glow-green);
}

.stat-value {
    font-family: var(--font-mono);
    font-size: 1.6rem;
    font-weight: 700;
    color: var(--accent-green);
    line-height: 1.2;
}

.stat-detail {
    font-family: var(--font-mono);
    font-size: 0.7rem;
    color: var(--text-muted);
}

.stat-label {
    font-size: 0.7rem;
    color: var(--text-secondary);
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-top: var(--gap-xs);
}

/* ===== EDUCATION SECTION ===== */
.education-section {
    margin-bottom: var(--gap-2xl);
    padding-top: var(--gap-md);
}

.edu-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--gap-md);
}

.edu-card {
    background: var(--bg-secondary);
    border: 1px solid var(--border-primary);
    border-radius: var(--radius-lg);
    padding: var(--gap-lg);
    transition: all var(--transition-base);
}

.edu-card:hover {
    border-color: var(--border-accent);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.edu-icon {
    font-size: 1.8rem;
    margin-bottom: var(--gap-sm);
}

.edu-card h3 {
    font-family: var(--font-mono);
    font-size: 0.95rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: var(--gap-sm);
}

.edu-card p {
    font-size: 0.85rem;
    color: var(--text-secondary);
    line-height: 1.7;
}

.edu-card ul {
    list-style: none;
    padding: 0;
}

.edu-card ul li {
    font-size: 0.82rem;
    color: var(--text-secondary);
    padding: 0.35rem 0;
    padding-left: 1.2rem;
    position: relative;
    line-height: 1.6;
}

.edu-card ul li::before {
    content: '▸';
    position: absolute;
    left: 0;
    color: var(--accent-green);
    font-weight: 700;
}

.edu-card ul li strong {
    color: var(--text-primary);
}

/* ===== TOAST ===== */
.toast-container {
    position: fixed;
    bottom: 1.5rem;
    right: 1.5rem;
    z-index: 9999;
    display: flex;
    flex-direction: column;
    gap: var(--gap-sm);
    pointer-events: none;
}

.toast {
    display: flex;
    align-items: center;
    gap: var(--gap-sm);
    padding: 0.7rem 1.2rem;
    background: var(--bg-tertiary);
    border: 1px solid var(--accent-green);
    border-radius: var(--radius-md);
    color: var(--accent-green);
    font-family: var(--font-mono);
    font-size: 0.8rem;
    font-weight: 600;
    box-shadow: var(--shadow-lg);
    pointer-events: auto;
    animation: toastSlideIn var(--transition-slow) ease forwards;
    max-width: 320px;
}

.toast.toast-error {
    border-color: var(--accent-red);
    color: var(--accent-red);
}

.toast-icon {
    font-size: 1rem;
    flex-shrink: 0;
}

@keyframes toastSlideIn {
    from {
        opacity: 0;
        transform: translateX(80px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes toastSlideOut {
    from {
        opacity: 1;
        transform: translateX(0);
    }
    to {
        opacity: 0;
        transform: translateX(80px);
    }
}

/* ===== FOOTER ===== */
.site-footer {
    background: var(--bg-secondary);
    border-top: 1px solid var(--border-primary);
    padding: var(--gap-lg) 0;
    text-align: center;
}

.site-footer p {
    font-size: 0.75rem;
    color: var(--text-muted);
    line-height: 1.6;
}

.footer-privacy {
    margin-top: var(--gap-xs);
    color: var(--text-secondary) !important;
    font-weight: 500;
}

/* ============================================================
   RESPONSIVE: TABLET (min-width: 640px)
   ============================================================ */
@media (min-width: 640px) {
    .presets-grid {
        grid-template-columns: repeat(3, 1fr);
    }

    .pipeline-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .stats-grid {
        grid-template-columns: repeat(3, 1fr);
    }

    .edu-grid {
        grid-template-columns: 1fr;
    }

    .editor-area {
        min-height: 280px;
    }
}

/* ============================================================
   RESPONSIVE: DESKTOP (min-width: 960px)
   ============================================================ */
@media (min-width: 960px) {
    .site-header .container {
        flex-direction: row;
        justify-content: space-between;
    }

    .header-brand {
        text-align: left;
    }

    .logo-text {
        font-size: 1.8rem;
    }

    .ad-desktop {
        display: flex;
    }

    .ad-mobile {
        display: none;
    }

    .presets-grid {
        grid-template-columns: repeat(6, 1fr);
    }

    .pipeline-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .workspace-section {
        display: grid;
        grid-template-columns: 1fr 1fr;
        grid-template-rows: auto 1fr;
        gap: var(--gap-lg);
    }

    .panel-input {
        grid-column: 1;
        grid-row: 1 / 3;
    }

    .actions-bar {
        grid-column: 2;
        grid-row: 1;
        justify-content: flex-start;
        align-items: center;
        padding: 0;
    }

    .panel-output {
        grid-column: 2;
        grid-row: 2;
    }

    .editor-area {
        min-height: 350px;
    }

    .stats-grid {
        grid-template-columns: repeat(5, 1fr);
    }

    .edu-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

/* ============================================================
   RESPONSIVE: WIDE DESKTOP (min-width: 1200px)
   ============================================================ */
@media (min-width: 1200px) {
    .pipeline-grid {
        grid-template-columns: repeat(4, 1fr);
    }
}

/* ===== UTILITY: FOCUS VISIBLE ===== */
:focus-visible {
    outline: 2px solid var(--accent-green);
    outline-offset: 2px;
}

/* ===== SELECTION ===== */
::selection {
    background: var(--accent-green-dim);
    color: var(--accent-green);
}