/* =============================================================================
   Opernetix — Executive Dark Theme
   A refined, premium dark interface for enterprise resource planning.
   Inspired by high-end financial dashboards and luxury SaaS.
   ============================================================================= */

/* ── Design Tokens ────────────────────────────────────────────────────────── */
:root {
    /* Palette — deep navy with teal accents */
    --hue-base: 222;
    --color-primary: hsl(215, 50%, 23%);
    --color-primary-dark: hsl(222, 47%, 11%);
    --color-primary-light: hsl(215, 40%, 30%);

    --color-accent: #10B981;
    --color-accent-hover: #059669;
    --color-accent-glow: rgba(16, 185, 129, 0.25);

    /* Surfaces */
    --color-bg-dark: hsl(222, 47%, 8%);
    --color-bg-medium: hsl(222, 33%, 14%);
    --color-bg-light: hsl(222, 25%, 20%);
    --color-bg-card: hsl(222, 30%, 13%);
    --color-bg-elevated: hsl(222, 30%, 16%);

    /* Glass */
    --glass-bg: rgba(255, 255, 255, 0.03);
    --glass-border: rgba(255, 255, 255, 0.06);
    --glass-hover: rgba(255, 255, 255, 0.07);

    /* Typography */
    --color-text-primary: #F0F4F8;
    --color-text-secondary: #8B9DC3;
    --color-text-muted: #5B6B89;

    /* Borders */
    --color-border: hsl(222, 20%, 20%);
    --color-border-light: hsl(222, 18%, 28%);

    /* Status */
    --color-success: #10B981;
    --color-warning: #F59E0B;
    --color-error: #F43F5E;
    --color-info: #6366F1;

    /* Sizing */
    --sidebar-width: 260px;
    --topbar-height: 56px;
    --radius: 10px;
    --radius-sm: 6px;
    --radius-xs: 4px;
    --radius-pill: 100px;

    /* Shadows */
    --shadow-sm: 0 1px 2px rgba(0,0,0,.2);
    --shadow-md: 0 4px 16px rgba(0,0,0,.25);
    --shadow-lg: 0 12px 40px rgba(0,0,0,.35);
    --shadow-glow: 0 0 20px var(--color-accent-glow);

    /* Motion */
    --ease-out: cubic-bezier(.16,1,.3,1);
    --ease-spring: cubic-bezier(.34,1.56,.64,1);
    --dur-fast: .15s;
    --dur-normal: .25s;
    --dur-slow: .4s;
}

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

html, body {
    height: 100%;
    font-family: 'DM Sans', system-ui, -apple-system, sans-serif;
    font-size: 14px;
    line-height: 1.6;
    color: var(--color-text-primary);
    background-color: var(--color-bg-dark);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

::selection {
    background: var(--color-accent);
    color: white;
}

/* Scrollbar */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--color-border); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--color-border-light); }

/* ── App Layout ───────────────────────────────────────────────────────────── */
.app-container { display: flex; height: 100vh; }
.main-content { flex: 1; display: flex; flex-direction: column; overflow: hidden; min-width: 0; }
.page-content {
    flex: 1;
    padding: 28px 32px;
    overflow-y: auto;
    background: var(--color-bg-dark);
    background-image:
        radial-gradient(ellipse at 20% 0%, rgba(16, 185, 129, 0.03) 0%, transparent 60%),
        radial-gradient(ellipse at 80% 100%, rgba(99, 102, 241, 0.03) 0%, transparent 60%);
}

/* ── Sidebar ──────────────────────────────────────────────────────────────── */
.sidebar {
    width: var(--sidebar-width);
    background: linear-gradient(180deg, hsl(215, 45%, 18%) 0%, var(--color-primary-dark) 100%);
    display: flex;
    flex-direction: column;
    border-right: 1px solid var(--glass-border);
    transition: width var(--dur-slow) var(--ease-out);
    overflow: hidden;
    position: relative;
    z-index: 10;
}

.sidebar::after {
    content: '';
    position: absolute;
    top: 0; right: 0; bottom: 0;
    width: 1px;
    background: linear-gradient(180deg, var(--color-accent-glow), transparent 50%, var(--color-accent-glow));
    opacity: 0.3;
}

.sidebar-collapsed { width: 62px; }
.sidebar-collapsed .nav-text,
.sidebar-collapsed .nav-arrow,
.sidebar-collapsed .user-name,
.sidebar-collapsed .nav-section-content { display: none; }
.sidebar-collapsed .nav-section-header { justify-content: center; padding: 10px 0; }
.sidebar-collapsed .nav-item { justify-content: center; padding: 10px 0; }
.sidebar-collapsed .nav-icon { margin-right: 0; }
.sidebar-collapsed .sidebar-content { padding: 12px 6px; }
.sidebar-collapsed .sidebar-footer { padding: 10px 6px; }
.sidebar-collapsed .user-info { justify-content: center; padding: 8px 0; }
.sidebar-collapsed .user-icon { margin-right: 0; }
.sidebar-collapsed .logout-btn { justify-content: center; padding: 8px 0; }
.sidebar-collapsed .sidebar-header { padding: 0 10px; justify-content: center; gap: 0; }

.sidebar-header {
    height: var(--topbar-height);
    display: flex;
    align-items: center;
    padding: 0 20px;
    border-bottom: 1px solid rgba(255,255,255,0.06);
    justify-content: space-between;
    gap: 12px;
    flex-shrink: 0;
}

.sidebar-header .logo {
    font-family: 'Space Mono', 'JetBrains Mono', monospace;
    font-size: 22px;
    font-weight: 700;
    letter-spacing: -0.5px;
    color: var(--color-text-primary);
    white-space: nowrap;
    background: linear-gradient(135deg, var(--color-text-primary) 40%, var(--color-accent));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.sidebar-toggle {
    background: none;
    border: 1px solid rgba(255,255,255,0.1);
    color: rgba(255,255,255,0.5);
    cursor: pointer;
    font-size: 11px;
    padding: 5px 7px;
    border-radius: var(--radius-xs);
    transition: all var(--dur-fast);
    flex-shrink: 0;
}
.sidebar-toggle:hover { color: white; background: rgba(255,255,255,0.08); border-color: rgba(255,255,255,0.2); }
.sidebar-collapsed .sidebar-toggle { padding: 5px; }

.sidebar-content { flex: 1; overflow-y: auto; padding: 12px 10px; }

.sidebar-footer {
    padding: 14px;
    border-top: 1px solid rgba(255,255,255,0.06);
    flex-shrink: 0;
}

.user-info {
    display: flex; align-items: center;
    padding: 8px 12px; margin-bottom: 8px;
    color: var(--color-text-secondary); font-size: 13px;
}
.user-icon { font-size: 16px; margin-right: 10px; opacity: 0.7; }
.user-name { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

.logout-btn {
    display: flex; align-items: center; width: 100%;
    padding: 10px 14px; border: 1px solid rgba(244,63,94,0.15);
    border-radius: var(--radius-sm); background: rgba(244,63,94,0.06);
    color: var(--color-error); font-size: 13px; font-weight: 500;
    cursor: pointer; transition: all var(--dur-fast);
    font-family: inherit;
}
.logout-btn:hover { background: rgba(244,63,94,0.12); border-color: rgba(244,63,94,0.25); }
.logout-btn .nav-icon { font-size: 16px; margin-right: 10px; }

/* Nav Items */
.nav-item {
    display: flex; align-items: center;
    padding: 9px 14px; margin: 2px 0;
    border-radius: var(--radius-sm);
    color: var(--color-text-secondary);
    text-decoration: none;
    font-size: 13.5px; font-weight: 450;
    transition: all var(--dur-fast);
    position: relative;
}
.nav-item:hover { background: var(--glass-hover); color: var(--color-text-primary); }
.nav-item.active {
    background: linear-gradient(135deg, var(--color-accent), hsl(160, 80%, 35%));
    color: white;
    box-shadow: 0 2px 12px var(--color-accent-glow);
    font-weight: 600;
}
.nav-icon { font-size: 17px; margin-right: 11px; width: 22px; text-align: center; flex-shrink: 0; }
.nav-text { font-size: 13.5px; font-weight: 450; white-space: nowrap; }

/* Nav Sections */
.nav-section { margin: 4px 0; }
.nav-section-header {
    display: flex; align-items: center; width: 100%;
    padding: 9px 14px; border: none;
    border-radius: var(--radius-sm); background: transparent;
    color: var(--color-text-muted); cursor: pointer;
    transition: all var(--dur-fast); font-family: inherit;
    font-size: 12px; font-weight: 600;
    text-transform: uppercase; letter-spacing: 0.8px;
}
.nav-section-header:hover { background: var(--glass-hover); color: var(--color-text-secondary); }
.nav-section-header .nav-icon { font-size: 15px; }
.nav-section-header .nav-arrow { margin-left: auto; font-size: 9px; opacity: 0.5; }
.nav-section-content { padding-left: 12px; }
.nav-section-content .nav-item { padding: 8px 14px; font-size: 13px; }

/* ── Top Bar ──────────────────────────────────────────────────────────────── */
.top-bar {
    height: var(--topbar-height);
    display: flex; align-items: center; justify-content: space-between;
    padding: 0 32px;
    background: var(--color-bg-medium);
    border-bottom: 1px solid var(--color-border);
    flex-shrink: 0;
    backdrop-filter: blur(12px);
}
.top-bar-left .page-title {
    font-family: 'DM Sans', sans-serif;
    font-size: 16px; font-weight: 600;
    color: var(--color-text-primary);
    letter-spacing: -0.2px;
}
.top-bar-right { display: flex; align-items: center; gap: 16px; }
.top-bar-right .user-name { color: var(--color-text-secondary); font-size: 13px; font-weight: 500; }

/* ── Buttons ──────────────────────────────────────────────────────────────── */
.btn {
    display: inline-flex; align-items: center; justify-content: center;
    padding: 9px 20px; border: none; border-radius: var(--radius-sm);
    font-family: inherit; font-size: 13.5px; font-weight: 550;
    cursor: pointer; transition: all var(--dur-fast);
    text-decoration: none; letter-spacing: 0.1px;
}
.btn:disabled { opacity: 0.5; cursor: not-allowed; }

.btn-primary {
    background: linear-gradient(135deg, var(--color-accent), hsl(160, 70%, 35%));
    color: white;
    box-shadow: 0 2px 8px var(--color-accent-glow);
}
.btn-primary:hover:not(:disabled) {
    box-shadow: 0 4px 16px var(--color-accent-glow);
    transform: translateY(-1px);
}

.btn-secondary { background: var(--color-bg-light); color: var(--color-text-primary); border: 1px solid var(--color-border); }
.btn-secondary:hover:not(:disabled) { background: var(--color-border); border-color: var(--color-border-light); }

.btn-danger { background: var(--color-error); color: white; }
.btn-danger:hover:not(:disabled) { background: hsl(350, 90%, 45%); transform: translateY(-1px); }

.btn-logout {
    background: transparent; color: var(--color-text-secondary);
    padding: 7px 14px; border: 1px solid var(--color-border); border-radius: var(--radius-sm);
    font-family: inherit;
}
.btn-logout:hover { color: var(--color-text-primary); background: var(--color-bg-light); }

.btn-block { width: 100%; }
.btn-sm { padding: 6px 12px; font-size: 12.5px; }

.btn-back {
    background: none; border: none;
    font-size: 22px; color: var(--color-text-muted);
    cursor: pointer; padding: 4px 8px;
    border-radius: var(--radius-sm);
    transition: all var(--dur-fast);
}
.btn-back:hover { color: var(--color-text-primary); background: var(--glass-hover); }

/* ── Forms ─────────────────────────────────────────────────────────────────── */
.form-group { margin-bottom: 20px; }
.form-group label {
    display: block; margin-bottom: 6px;
    color: var(--color-text-muted); font-size: 12px;
    font-weight: 600; text-transform: uppercase; letter-spacing: 0.5px;
}

.form-control {
    width: 100%; padding: 10px 14px;
    border: 1px solid var(--color-border); border-radius: var(--radius-sm);
    background: var(--color-bg-dark); color: var(--color-text-primary);
    font-family: inherit; font-size: 14px;
    transition: all var(--dur-fast);
}
.form-control:focus {
    outline: none;
    border-color: var(--color-accent);
    box-shadow: 0 0 0 3px var(--color-accent-glow);
}
.form-control:disabled { opacity: 0.5; cursor: not-allowed; }
.form-control::placeholder { color: var(--color-text-muted); }
.form-control-sm { padding: 6px 10px; font-size: 13px; }

select.form-control {
    appearance: none;
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 20 20'%3e%3cpath stroke='%238B9DC3' stroke-linecap='round' stroke-linejoin='round' stroke-width='1.5' d='M6 8l4 4 4-4'/%3e%3c/svg%3e");
    background-position: right 10px center; background-repeat: no-repeat; background-size: 16px;
    padding-right: 36px;
}
textarea.form-control { resize: vertical; min-height: 80px; }

.validation-message { color: var(--color-error); font-size: 12px; margin-top: 4px; }

/* ── Login Page ───────────────────────────────────────────────────────────── */
.login-page {
    min-height: 100vh; display: flex; align-items: center; justify-content: center;
    background: var(--color-bg-dark);
    background-image:
        radial-gradient(ellipse at 30% 20%, rgba(16, 185, 129, 0.08) 0%, transparent 50%),
        radial-gradient(ellipse at 70% 80%, rgba(99, 102, 241, 0.06) 0%, transparent 50%);
}
.login-container { width: 100%; max-width: 420px; padding: 20px; }
.login-card {
    background: var(--color-bg-medium);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius); padding: 44px;
    box-shadow: var(--shadow-lg);
}
.login-header { text-align: center; margin-bottom: 36px; }
.login-header h1 {
    font-family: 'Space Mono', monospace;
    font-size: 36px; font-weight: 700;
    background: linear-gradient(135deg, var(--color-text-primary), var(--color-accent));
    -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text;
    margin-bottom: 8px;
}
.login-header p { color: var(--color-text-muted); font-size: 14px; }
.login-form { margin-bottom: 24px; }
.login-footer { text-align: center; }
.login-footer p { color: var(--color-text-muted); font-size: 12px; }

/* ── Alerts ────────────────────────────────────────────────────────────────── */
.alert { padding: 12px 16px; border-radius: var(--radius-sm); margin-bottom: 16px; font-size: 13px; font-weight: 500; }
.alert-error { background: rgba(244,63,94,0.08); border: 1px solid rgba(244,63,94,0.2); color: var(--color-error); }
.alert-success { background: rgba(16,185,129,0.08); border: 1px solid rgba(16,185,129,0.2); color: var(--color-success); }
.alert-warning { background: rgba(245,158,11,0.08); border: 1px solid rgba(245,158,11,0.2); color: var(--color-warning); }
.alert-info { background: rgba(99,102,241,0.08); border: 1px solid rgba(99,102,241,0.2); color: var(--color-info); }

/* ── Dashboard ─────────────────────────────────────────────────────────────── */
.dashboard-header { margin-bottom: 28px; }
.dashboard-header h1 {
    font-size: 26px; font-weight: 700;
    color: var(--color-text-primary);
    letter-spacing: -0.5px; margin-bottom: 4px;
}
.dashboard-header .subtitle { color: var(--color-text-muted); font-size: 14px; }

.dashboard-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 20px; margin-bottom: 28px;
}

.dashboard-card {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius); padding: 22px;
    display: flex; align-items: center; gap: 16px;
    position: relative; overflow: hidden;
}
.dashboard-card::before {
    content: ''; position: absolute; top: 0; left: 0; right: 0; height: 2px;
    background: linear-gradient(90deg, transparent, var(--color-accent), transparent);
    opacity: 0; transition: opacity var(--dur-normal);
}
.dashboard-card.clickable { cursor: pointer; transition: all var(--dur-normal) var(--ease-out); }
.dashboard-card.clickable:hover { transform: translateY(-3px); box-shadow: var(--shadow-md); border-color: var(--color-border-light); }
.dashboard-card.clickable:hover::before { opacity: 1; }

.card-icon {
    width: 50px; height: 50px; border-radius: var(--radius-sm);
    display: flex; align-items: center; justify-content: center; font-size: 22px;
    flex-shrink: 0;
}
.card-icon.sales { background: rgba(16,185,129,0.1); }
.card-icon.purchases { background: rgba(99,102,241,0.1); }
.card-icon.receivables { background: rgba(245,158,11,0.1); }
.card-icon.payables { background: rgba(244,63,94,0.1); }

.card-content h3 { font-size: 12px; font-weight: 600; color: var(--color-text-muted); margin-bottom: 2px; text-transform: uppercase; letter-spacing: 0.5px; }
.card-value { font-family: 'JetBrains Mono', 'Fira Code', monospace; font-size: 22px; font-weight: 700; color: var(--color-text-primary); letter-spacing: -0.5px; }
.card-label { font-size: 12px; color: var(--color-text-muted); margin-top: 2px; }

.dashboard-sections { display: grid; grid-template-columns: repeat(auto-fit, minmax(400px, 1fr)); gap: 20px; }
.dashboard-section {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius); padding: 22px;
}
.dashboard-section h2 { font-size: 14px; font-weight: 600; color: var(--color-text-primary); margin-bottom: 16px; text-transform: uppercase; letter-spacing: 0.5px; }
.empty-state { color: var(--color-text-muted); text-align: center; padding: 40px 20px; font-size: 14px; }

/* ── Toast Notifications ───────────────────────────────────────────────────── */
.toast-container { position: fixed; top: 16px; right: 16px; z-index: 9999; display: flex; flex-direction: column; gap: 8px; }
.toast {
    display: flex; align-items: center; gap: 12px;
    padding: 14px 18px; border-radius: var(--radius-sm);
    background: var(--color-bg-elevated); border: 1px solid var(--color-border);
    box-shadow: var(--shadow-lg); min-width: 320px; max-width: 440px;
    animation: toastIn var(--dur-slow) var(--ease-out);
    backdrop-filter: blur(12px);
}
@keyframes toastIn {
    from { transform: translateX(120%); opacity: 0; }
    50% { opacity: 1; }
    to { transform: translateX(0); }
}
.toast-success { border-left: 3px solid var(--color-success); }
.toast-error { border-left: 3px solid var(--color-error); }
.toast-warning { border-left: 3px solid var(--color-warning); }
.toast-info { border-left: 3px solid var(--color-info); }
.toast-title { color: var(--color-text-primary); font-weight: 600; font-size: 13px; }
.toast-message { color: var(--color-text-secondary); flex: 1; font-size: 13px; }
.toast-close { background: none; border: none; color: var(--color-text-muted); font-size: 18px; cursor: pointer; padding: 0 4px; transition: color var(--dur-fast); }
.toast-close:hover { color: var(--color-text-primary); }

/* ── Dialog / Modal ────────────────────────────────────────────────────────── */
.dialog-overlay {
    position: fixed; inset: 0;
    background: rgba(0,0,0,0.6); backdrop-filter: blur(4px);
    display: flex; align-items: center; justify-content: center; z-index: 9998;
    animation: fadeIn var(--dur-fast) ease;
}
@keyframes fadeIn { from { opacity: 0; } to { opacity: 1; } }
.dialog {
    background: var(--color-bg-elevated); border: 1px solid var(--color-border);
    border-radius: var(--radius); min-width: 400px; max-width: 500px;
    box-shadow: var(--shadow-lg);
    animation: dialogIn var(--dur-normal) var(--ease-spring);
}
@keyframes dialogIn { from { transform: scale(0.95) translateY(8px); opacity: 0; } to { transform: scale(1) translateY(0); opacity: 1; } }
.dialog-header { padding: 20px 24px; border-bottom: 1px solid var(--color-border); }
.dialog-header h3 { font-size: 16px; font-weight: 600; color: var(--color-text-primary); }
.dialog-body { padding: 24px; }
.dialog-body p { color: var(--color-text-secondary); font-size: 14px; line-height: 1.6; }
.dialog-footer { padding: 16px 24px; border-top: 1px solid var(--color-border); display: flex; justify-content: flex-end; gap: 10px; }

/* ── Tables ────────────────────────────────────────────────────────────────── */
.data-table-container {
    overflow-x: auto; border: 1px solid var(--color-border);
    border-radius: var(--radius);
}
.data-table { width: 100%; border-collapse: collapse; }
.data-table th, .data-table td { padding: 11px 16px; text-align: left; border-bottom: 1px solid var(--color-border); }
.data-table th {
    background: var(--color-bg-light); position: sticky; top: 0; z-index: 1;
    font-size: 11px; font-weight: 700; color: var(--color-text-muted);
    text-transform: uppercase; letter-spacing: 0.8px;
}
.data-table td { color: var(--color-text-primary); font-size: 13.5px; }
.data-table tbody tr { transition: background var(--dur-fast); }
.data-table tbody tr:nth-child(even) { background: rgba(255,255,255,0.01); }
.data-table tbody tr:hover { background: var(--glass-hover); }
.data-table tbody tr.selected { background: rgba(16,185,129,0.08); }
.data-table tfoot { background: var(--color-bg-light); }
.data-table tfoot td { border-bottom: none; font-weight: 600; }
.totals-row td { font-weight: 600; }

.clickable-row { cursor: pointer; }

/* Status Badges */
.status-badge {
    display: inline-flex; align-items: center;
    padding: 3px 10px; border-radius: var(--radius-pill);
    font-size: 11.5px; font-weight: 600; letter-spacing: 0.2px;
}
.status-badge.draft { background: rgba(91,107,137,0.15); color: var(--color-text-secondary); }
.status-badge.pending { background: rgba(245,158,11,0.12); color: var(--color-warning); }
.status-badge.approved, .status-badge.confirmed { background: rgba(99,102,241,0.12); color: var(--color-info); }
.status-badge.sent, .status-badge.processing { background: rgba(139,92,246,0.12); color: #A78BFA; }
.status-badge.partial { background: rgba(245,158,11,0.12); color: var(--color-warning); }
.status-badge.received, .status-badge.shipped, .status-badge.invoiced { background: rgba(16,185,129,0.12); color: var(--color-success); }
.status-badge.closed { background: rgba(91,107,137,0.1); color: var(--color-text-muted); }
.status-badge.cancelled { background: rgba(244,63,94,0.1); color: var(--color-error); }
.status-badge.active { background: rgba(16,185,129,0.12); color: var(--color-success); }
.status-badge.inactive { background: rgba(244,63,94,0.1); color: var(--color-error); }
.status-badge.info { background: rgba(99,102,241,0.12); color: var(--color-info); }

/* Icon Buttons */
.btn-icon {
    background: none; border: none; padding: 6px 8px;
    cursor: pointer; color: var(--color-text-muted);
    border-radius: var(--radius-xs); transition: all var(--dur-fast);
}
.btn-icon:hover { background: var(--glass-hover); color: var(--color-text-primary); }
.btn-icon-danger:hover { background: rgba(244,63,94,0.1); color: var(--color-error); }
.btn-icon-success:hover { background: rgba(16,185,129,0.1); color: var(--color-success); }

/* ── Page Layout ───────────────────────────────────────────────────────────── */
.page-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 24px; }
.page-header-left { display: flex; align-items: center; gap: 14px; }
.page-header-left h1 { font-size: 22px; font-weight: 700; color: var(--color-text-primary); letter-spacing: -0.3px; }
.page-header-right { display: flex; gap: 10px; }

.page-toolbar { display: flex; justify-content: space-between; align-items: center; margin-bottom: 20px; gap: 16px; }
.search-box { display: flex; gap: 8px; flex: 1; max-width: 400px; }
.search-box .form-control { flex: 1; }
.toolbar-options { display: flex; align-items: center; gap: 14px; }
.checkbox-label { display: flex; align-items: center; gap: 8px; color: var(--color-text-secondary); font-size: 13px; cursor: pointer; }
.checkbox-label input[type="checkbox"] { width: 16px; height: 16px; accent-color: var(--color-accent); cursor: pointer; }

.page-footer { margin-top: 14px; padding: 10px 0; border-top: 1px solid var(--color-border); }
.record-count { color: var(--color-text-muted); font-size: 12.5px; }

.loading-state, .empty-state { text-align: center; padding: 60px 20px; color: var(--color-text-muted); }

/* ── Detail Form ───────────────────────────────────────────────────────────── */
.detail-form {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius); padding: 28px;
}
.form-section { margin-bottom: 32px; }
.form-section:last-of-type { margin-bottom: 24px; }
.form-section h2 {
    font-size: 13px; font-weight: 700; color: var(--color-text-muted);
    text-transform: uppercase; letter-spacing: 0.8px;
    margin-bottom: 16px; padding-bottom: 10px;
    border-bottom: 1px solid var(--color-border);
}
.form-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 18px; }
.form-group-full { grid-column: 1 / -1; }
.checkbox-grid { display: flex; flex-wrap: wrap; gap: 20px; }
.form-actions {
    display: flex; justify-content: flex-end; gap: 10px;
    padding-top: 24px; border-top: 1px solid var(--color-border);
}
.section-header {
    display: flex; justify-content: space-between; align-items: center;
    margin-bottom: 16px; padding-bottom: 10px; border-bottom: 1px solid var(--color-border);
}
.section-header h2 { margin-bottom: 0; padding-bottom: 0; border-bottom: none; }

/* ── Audit Trail ───────────────────────────────────────────────────────────── */
.audit-trail { display: flex; flex-direction: column; gap: 10px; padding: 8px 0; }
.audit-item {
    display: flex; align-items: flex-start; gap: 12px;
    padding: 10px 14px; background: var(--glass-bg);
    border-radius: var(--radius-sm); border-left: 3px solid var(--color-success);
    transition: background var(--dur-fast);
}
.audit-item:hover { background: var(--glass-hover); }
.audit-item.audit-item-muted { border-left-color: var(--color-text-muted); opacity: 0.6; }
.audit-icon { font-size: 15px; flex-shrink: 0; margin-top: 2px; }
.audit-content { display: flex; flex-direction: column; gap: 2px; }
.audit-action { font-weight: 600; color: var(--color-text-primary); font-size: 13px; }
.audit-details { font-size: 12px; color: var(--color-text-muted); }
.audit-link { font-size: 12px; color: var(--color-accent); text-decoration: none; font-weight: 500; }
.audit-link:hover { text-decoration: underline; }

/* ── Utility Classes ───────────────────────────────────────────────────────── */
.text-center { text-align: center; }
.text-right { text-align: right; }
.text-muted { color: var(--color-text-muted); }
.text-success { color: var(--color-success); }
.text-error { color: var(--color-error); }
.text-warning { color: var(--color-warning); }
.mt-1 { margin-top: 8px; } .mt-2 { margin-top: 16px; } .mt-3 { margin-top: 24px; }
.mb-1 { margin-bottom: 8px; } .mb-2 { margin-bottom: 16px; } .mb-3 { margin-bottom: 24px; }
.p-1 { padding: 8px; } .p-2 { padding: 16px; } .p-3 { padding: 24px; }

/* ── Loading Animation ─────────────────────────────────────────────────────── */
@keyframes pulse { 0%, 100% { opacity: 0.4; } 50% { opacity: 0.8; } }
.loading-state p { animation: pulse 1.5s ease-in-out infinite; }

/* ── Tabs ──────────────────────────────────────────────────────────────────── */
.tab-strip {
    display: flex;
    border-bottom: 1px solid var(--color-border);
    margin-bottom: 24px;
    gap: 2px;
}
.tab-button {
    background: none;
    border: none;
    padding: 12px 22px;
    font-family: inherit;
    font-size: 13px;
    font-weight: 600;
    color: var(--color-text-muted);
    cursor: pointer;
    border-bottom: 2px solid transparent;
    transition: all var(--dur-fast);
    letter-spacing: 0.3px;
}
.tab-button:hover {
    color: var(--color-text-secondary);
    background: var(--glass-hover);
}
.tab-button.active {
    color: var(--color-accent);
    border-bottom-color: var(--color-accent);
}

/* ── Gantt Chart ───────────────────────────────────────────────────────────── */
.gantt-wrapper {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    overflow: hidden;
}
.gantt-toolbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 14px 18px;
    border-bottom: 1px solid var(--color-border);
}
.gantt-toolbar h3 {
    font-size: 13px;
    font-weight: 700;
    color: var(--color-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.8px;
}
.gantt-scroll {
    overflow-x: auto;
    overflow-y: visible;
}
.gantt-grid {
    display: grid;
    grid-template-columns: 260px 1fr;
    min-width: fit-content;
}
.gantt-header-label,
.gantt-task-label {
    padding: 10px 14px;
    border-right: 1px solid var(--color-border);
    background: var(--color-bg-light);
}
.gantt-header-label {
    font-size: 11px;
    font-weight: 700;
    color: var(--color-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.8px;
    border-bottom: 1px solid var(--color-border);
}
.gantt-task-label {
    background: var(--color-bg-card);
    border-bottom: 1px solid var(--color-border);
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 13px;
    color: var(--color-text-primary);
    cursor: pointer;
    transition: background var(--dur-fast);
}
.gantt-task-label:hover { background: var(--glass-hover); }
.gantt-task-label .task-status-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    flex-shrink: 0;
}
.gantt-task-label .task-name {
    flex: 1;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}
.gantt-timeline-header {
    display: flex;
    background: var(--color-bg-light);
    border-bottom: 1px solid var(--color-border);
    position: relative;
}
.gantt-day {
    flex-shrink: 0;
    padding: 6px 0;
    text-align: center;
    font-size: 10px;
    font-weight: 600;
    color: var(--color-text-muted);
    border-right: 1px solid var(--color-border);
    box-sizing: border-box;
}
.gantt-day.weekend { background: rgba(255,255,255,0.02); }
.gantt-day.today { background: rgba(16,185,129,0.1); color: var(--color-accent); }
.gantt-day .day-num { font-size: 11px; font-weight: 700; color: var(--color-text-secondary); }
.gantt-day .day-name { font-size: 9px; text-transform: uppercase; }

.gantt-row {
    position: relative;
    height: 38px;
    background: var(--color-bg-card);
    border-bottom: 1px solid var(--color-border);
}
.gantt-row:nth-child(even) { background: rgba(255,255,255,0.01); }
.gantt-row .weekend-stripe {
    position: absolute;
    top: 0;
    bottom: 0;
    background: rgba(255,255,255,0.02);
    pointer-events: none;
}
.gantt-row .today-line {
    position: absolute;
    top: 0;
    bottom: 0;
    width: 2px;
    background: var(--color-accent);
    opacity: 0.6;
    pointer-events: none;
    z-index: 2;
}

.gantt-bar {
    position: absolute;
    top: 8px;
    height: 22px;
    border-radius: 4px;
    display: flex;
    align-items: center;
    padding: 0 8px;
    font-size: 11px;
    font-weight: 600;
    color: white;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    cursor: pointer;
    transition: transform var(--dur-fast), box-shadow var(--dur-fast);
    z-index: 1;
}
.gantt-bar:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(0,0,0,0.35);
    z-index: 3;
}
.gantt-bar.status-not-started { background: linear-gradient(135deg, #6366F1, #4F46E5); }
.gantt-bar.status-in-progress { background: linear-gradient(135deg, #10B981, hsl(160, 70%, 35%)); }
.gantt-bar.status-completed   { background: linear-gradient(135deg, #64748B, #475569); }
.gantt-bar.status-blocked     { background: linear-gradient(135deg, #F43F5E, #BE123C); }

.task-status-dot.status-not-started { background: #6366F1; }
.task-status-dot.status-in-progress { background: #10B981; }
.task-status-dot.status-completed   { background: #64748B; }
.task-status-dot.status-blocked     { background: #F43F5E; }

.gantt-empty {
    padding: 60px 20px;
    text-align: center;
    color: var(--color-text-muted);
}