/* ========================================
   Env File Diff Merger — DevOps Dark Theme
   ======================================== */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&family=JetBrains+Mono:wght@400;500&display=swap');

:root {
    --primary: #8B5CF6;
    --primary-glow: rgba(139, 92, 246, 0.2);
    --success: #10B981;
    --success-glow: rgba(16, 185, 129, 0.15);
    --danger: #EF4444;
    --danger-glow: rgba(239, 68, 68, 0.15);
    --warning: #F59E0B;
    --warning-glow: rgba(245, 158, 11, 0.15);

    --bg-deep: #0F172A;
    --bg-base: #1E293B;
    --bg-surface: #334155;
    --bg-elevated: #475569;

    --text-primary: #F1F5F9;
    --text-secondary: #94A3B8;
    --text-muted: #64748B;

    --border: rgba(71, 85, 105, 0.5);
    --border-hover: rgba(100, 116, 139, 0.6);

    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 14px;

    --font-sans: 'Inter', system-ui, sans-serif;
    --font-mono: 'JetBrains Mono', monospace;
    --transition: 200ms ease;
}

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

html {
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
}

body {
    font-family: var(--font-sans);
    background: var(--bg-deep);
    color: var(--text-primary);
    min-height: 100vh;
}

.app {
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 16px 60px;
}

/* Header */
.header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 16px 0;
    gap: 12px;
    flex-wrap: wrap;
}

.logo {
    display: flex;
    align-items: center;
    gap: 8px;
    font-weight: 700;
    font-size: 1.05rem;
}

.logo-icon {
    width: 32px;
    height: 32px;
    background: linear-gradient(135deg, var(--primary), var(--success));
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1rem;
}

.header-actions {
    display: flex;
    align-items: center;
    gap: 8px;
    flex-wrap: wrap;
}

.toggle-label {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 0.78rem;
    color: var(--text-secondary);
    cursor: pointer;
}

.toggle-label input {
    accent-color: var(--primary);
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 5px;
    padding: 6px 12px;
    border-radius: var(--radius-sm);
    font-family: var(--font-sans);
    font-size: 0.78rem;
    font-weight: 500;
    border: 1px solid var(--border);
    background: var(--bg-surface);
    color: var(--text-primary);
    cursor: pointer;
    transition: all var(--transition);
}

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

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

.btn-primary:hover {
    background: #7C3AED;
}

.btn-large {
    padding: 10px 24px;
    font-size: 0.85rem;
}

.btn-icon {
    padding: 5px;
    border: none;
    background: transparent;
    cursor: pointer;
    font-size: 1rem;
}

.btn-ghost {
    background: transparent;
    border-color: transparent;
    color: var(--text-muted);
}

.btn-ghost:hover {
    color: var(--text-primary);
    background: var(--bg-surface);
}

.file-input-hidden {
    display: none;
}

/* Panes */
.panes {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
    margin-bottom: 20px;
}

.pane {
    display: flex;
    flex-direction: column;
}

.pane-header {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 6px;
}

.pane-title-input {
    flex: 1;
    padding: 5px 10px;
    font-family: var(--font-sans);
    font-size: 0.82rem;
    font-weight: 600;
    color: var(--primary);
    background: transparent;
    border: 1px solid transparent;
    border-radius: var(--radius-sm);
    outline: none;
}

.pane-title-input:focus {
    border-color: var(--primary);
    background: var(--bg-base);
}

.pane-input {
    width: 100%;
    min-height: 200px;
    padding: 14px;
    font-family: var(--font-mono);
    font-size: 0.8rem;
    color: var(--text-primary);
    background: var(--bg-base);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    outline: none;
    resize: vertical;
    line-height: 1.6;
}

.pane-input:focus {
    border-color: var(--primary);
}

.action-bar {
    text-align: center;
    margin-bottom: 24px;
}

/* Diff */
.diff-section {
    margin-bottom: 28px;
}

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

.diff-info {
    display: flex;
    gap: 6px;
    flex-wrap: wrap;
}

.badge {
    padding: 3px 10px;
    border-radius: 20px;
    font-size: 0.7rem;
    font-weight: 600;
}

.badge-match {
    background: var(--success-glow);
    color: var(--success);
    border: 1px solid rgba(16, 185, 129, 0.3);
}

.badge-diff {
    background: var(--warning-glow);
    color: var(--warning);
    border: 1px solid rgba(245, 158, 11, 0.3);
}

.badge-missing {
    background: var(--danger-glow);
    color: var(--danger);
    border: 1px solid rgba(239, 68, 68, 0.3);
}

.badge-warn {
    background: rgba(139, 92, 246, 0.12);
    color: var(--primary);
    border: 1px solid rgba(139, 92, 246, 0.3);
}

.control-select {
    padding: 5px 10px;
    font-family: var(--font-sans);
    font-size: 0.78rem;
    color: var(--text-primary);
    background: var(--bg-surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    outline: none;
}

/* Diff Table */
.diff-table {
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    overflow: hidden;
}

.diff-row {
    display: grid;
    grid-template-columns: 200px 1fr 1fr 80px 60px;
    align-items: center;
    border-bottom: 1px solid var(--border);
}

.diff-row:last-child {
    border-bottom: none;
}

.diff-header {
    background: var(--bg-base);
}

.diff-header .diff-cell {
    font-size: 0.7rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    color: var(--text-muted);
    padding: 8px 12px;
}

.diff-cell {
    padding: 8px 12px;
    font-size: 0.8rem;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.cell-key {
    font-family: var(--font-mono);
    font-weight: 600;
    color: var(--text-primary);
}

.cell-val {
    font-family: var(--font-mono);
    color: var(--text-secondary);
}

.cell-status {
    text-align: center;
}

.cell-pick {
    text-align: center;
}

.diff-row.status-match {
    background: rgba(16, 185, 129, 0.04);
}

.diff-row.status-diff {
    background: rgba(245, 158, 11, 0.04);
}

.diff-row.status-missing {
    background: rgba(239, 68, 68, 0.04);
}

.diff-row.status-secret {
    background: rgba(139, 92, 246, 0.04);
}

.status-dot {
    display: inline-block;
    width: 8px;
    height: 8px;
    border-radius: 50%;
}

.dot-match {
    background: var(--success);
}

.dot-diff {
    background: var(--warning);
}

.dot-missing {
    background: var(--danger);
}

.dot-secret {
    background: var(--primary);
}

.pick-btn {
    padding: 3px 8px;
    font-size: 0.7rem;
    font-family: var(--font-mono);
    border-radius: 4px;
    border: 1px solid var(--border);
    background: var(--bg-surface);
    color: var(--text-muted);
    cursor: pointer;
    transition: all var(--transition);
}

.pick-btn:hover {
    border-color: var(--primary);
    color: var(--primary);
}

.pick-btn.active {
    background: var(--primary);
    border-color: var(--primary);
    color: white;
}

.masked-value {
    filter: blur(4px);
    cursor: pointer;
    transition: filter 0.2s;
    user-select: none;
}

.masked-value:hover,
.masked-value.revealed {
    filter: none;
}

.group-header {
    grid-column: 1 / -1;
    padding: 8px 12px;
    font-size: 0.72rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--primary);
    background: rgba(139, 92, 246, 0.06);
    border-bottom: 1px solid var(--border);
}

/* Merge */
.merge-section {
    margin-bottom: 28px;
}

.merge-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 12px;
    gap: 8px;
    flex-wrap: wrap;
}

.merge-header h2 {
    font-size: 1rem;
    font-weight: 600;
}

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

.merge-output {
    background: var(--bg-base);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    padding: 16px;
    font-family: var(--font-mono);
    font-size: 0.8rem;
    color: var(--text-secondary);
    line-height: 1.6;
    overflow-x: auto;
    white-space: pre;
    max-height: 400px;
    overflow-y: auto;
}

/* Toast */
.toast-container {
    position: fixed;
    bottom: 20px;
    right: 20px;
    z-index: 2000;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.toast {
    padding: 10px 14px;
    background: rgba(30, 41, 59, 0.9);
    backdrop-filter: blur(16px);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    font-size: 0.82rem;
    color: var(--text-primary);
    animation: toast-in 0.3s ease-out;
}

.toast.success {
    border-left: 3px solid var(--success);
}

@keyframes toast-in {
    from {
        opacity: 0;
        transform: translateX(30px);
    }

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

@media (max-width: 700px) {
    .panes {
        grid-template-columns: 1fr;
    }

    .diff-row {
        grid-template-columns: 120px 1fr 1fr 60px 50px;
        font-size: 0.72rem;
    }

    .logo span {
        display: none;
    }
}