/* ==========================================================================
   Global Tokens
   ========================================================================== */

:root {
    color-scheme: light;
    --flash-text: #1f2933;
    --flash-border: #d8dee4;
    --flash-shadow: 0 18px 45px rgba(31, 41, 51, 0.16);
}

/* ==========================================================================
   Flash Messages
   ========================================================================== */

.flash-stack {
    position: fixed;
    top: 24px;
    right: 24px;
    z-index: 1000;
    display: grid;
    gap: 10px;
    width: min(380px, calc(100vw - 32px));
}

.flash {
    display: grid;
    grid-template-columns: 10px 1fr;
    gap: 12px;
    align-items: start;
    padding: 14px 16px;
    border: 1px solid var(--flash-border);
    border-radius: 8px;
    background: #fff;
    color: var(--flash-text);
    box-shadow: var(--flash-shadow);
    font: 14px/1.45 system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

.flash::before {
    content: "";
    width: 10px;
    height: 10px;
    margin-top: 5px;
    border-radius: 999px;
    background: #3b82f6;
}

.flash--success {
    border-color: #9bd8ae;
    background: #f2fbf5;
}

.flash--success::before {
    background: #2f9e44;
}

.flash--error {
    border-color: #f1a7a7;
    background: #fff5f5;
}

.flash--error::before {
    background: #d64545;
}

.flash--warning {
    border-color: #ecd38a;
    background: #fffbea;
}

.flash--warning::before {
    background: #c98a04;
}

.flash--info {
    border-color: #a8c7ee;
    background: #f5f9ff;
}

/* ==========================================================================
   Login Form
   ========================================================================== */

.login-panel {
    max-width: 400px;
    margin: 80px auto;
    font-family: sans-serif;
}

.login-form {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.login-input {
    width: 100%;
    padding: 8px;
    box-sizing: border-box;
}

.login-submit {
    padding: 10px;
    cursor: pointer;
}

/* ==========================================================================
   App Layout
   ========================================================================== */

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

body {
    margin: 0;
    font: 14px/1.5 system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    color: #1e293b;
    background: #f8fafc;
}

.app-layout {
    display: flex;
    min-height: 100vh;
}

/* ==========================================================================
   Sidebar
   ========================================================================== */

.sidebar {
    width: 220px;
    flex-shrink: 0;
    background: #1e293b;
    color: #e2e8f0;
    display: flex;
    flex-direction: column;
}

.sidebar-brand {
    padding: 18px 16px;
    font-size: 18px;
    font-weight: 700;
    color: #fff;
    letter-spacing: 0.03em;
    border-bottom: 1px solid #334155;
}

.sidebar-project {
    padding: 10px 16px;
    background: #0f172a;
    font-size: 11px;
    color: #94a3b8;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    border-bottom: 1px solid #334155;
}

.sidebar-project strong {
    display: block;
    color: #38bdf8;
    font-size: 13px;
    font-weight: 600;
    text-transform: none;
    letter-spacing: 0;
    margin-top: 2px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.sidebar-project--none {
    color: #64748b;
}

.sidebar-nav {
    list-style: none;
    margin: 0;
    padding: 8px 0;
    flex: 1;
}

.sidebar-nav a {
    display: block;
    padding: 9px 16px;
    color: #cbd5e1;
    font-size: 14px;
    text-decoration: none;
    border-left: 3px solid transparent;
    transition: background 0.1s;
}

.sidebar-nav a:hover {
    background: #334155;
    color: #fff;
}

.sidebar-nav a.active {
    background: #334155;
    color: #fff;
    border-left-color: #38bdf8;
}

.sidebar-footer {
    padding: 12px 16px;
    border-top: 1px solid #334155;
}

.sidebar-user {
    font-size: 11px;
    color: #64748b;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 8px;
}

.btn-logout {
    background: none;
    border: 1px solid #475569;
    color: #94a3b8;
    padding: 5px 12px;
    border-radius: 4px;
    font-size: 13px;
    cursor: pointer;
    width: 100%;
}

.btn-logout:hover {
    background: #334155;
    color: #e2e8f0;
}

.sidebar-profile {
    display: block;
    color: #cbd5e1;
    font-size: 13px;
    font-weight: 500;
    text-decoration: none;
    padding: 4px 0;
    margin-bottom: 8px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.sidebar-profile:hover,
.sidebar-profile.active {
    color: #fff;
}

.sidebar-nav-divider {
    height: 1px;
    background: #334155;
    margin: 6px 0;
}

/* ==========================================================================
   Main Content
   ========================================================================== */

.main {
    flex: 1;
    overflow: auto;
}

.page {
    padding: 28px 32px;
    max-width: 1100px;
}

/* ==========================================================================
   Page Header
   ========================================================================== */

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

.page-title {
    font-size: 20px;
    font-weight: 700;
    color: #0f172a;
    margin: 0;
}

/* ==========================================================================
   Tables
   ========================================================================== */

.table-wrap {
    overflow-x: auto;
    border: 1px solid #e2e8f0;
    border-radius: 8px;
    background: #fff;
}

table {
    width: 100%;
    border-collapse: collapse;
    font-size: 14px;
}

th, td {
    padding: 10px 14px;
    text-align: left;
    border-bottom: 1px solid #f1f5f9;
}

th {
    background: #f8fafc;
    font-weight: 600;
    color: #64748b;
    font-size: 12px;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    border-bottom: 1px solid #e2e8f0;
}

tbody tr:last-child td {
    border-bottom: none;
}

tbody tr:hover td {
    background: #f8fafc;
}

tbody tr.row-active td {
    background: #f0f9ff;
}

td.actions {
    white-space: nowrap;
    text-align: right;
}

td.actions > * + * {
    margin-left: 4px;
}

/* ==========================================================================
   Forms
   ========================================================================== */

.form-grid {
    display: grid;
    gap: 18px;
    max-width: 640px;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 5px;
}

.form-group label {
    font-size: 13px;
    font-weight: 500;
    color: #374151;
}

.form-control {
    padding: 7px 10px;
    border: 1px solid #d1d5db;
    border-radius: 5px;
    font-size: 14px;
    width: 100%;
    background: #fff;
    color: #1e293b;
    transition: border-color 0.15s;
}

.form-control:focus {
    outline: none;
    border-color: #3b82f6;
    box-shadow: 0 0 0 2px rgba(59, 130, 246, 0.15);
}

textarea.form-control {
    resize: vertical;
    font-family: inherit;
}

.form-static {
    padding: 7px 0;
    font-size: 14px;
    color: #475569;
    font-weight: 500;
}

.form-section-title {
    margin: 4px 0 0;
    font-size: 13px;
    font-weight: 600;
    color: #64748b;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    border-bottom: 1px solid #e2e8f0;
    padding-bottom: 6px;
}

/* ==========================================================================
   Buttons
   ========================================================================== */

.btn {
    display: inline-block;
    padding: 8px 16px;
    border: none;
    border-radius: 5px;
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    text-decoration: none;
    line-height: 1.4;
}

.btn-primary {
    background: #3b82f6;
    color: #fff;
}

.btn-primary:hover {
    background: #2563eb;
}

.btn-secondary {
    background: #e2e8f0;
    color: #334155;
}

.btn-secondary:hover {
    background: #cbd5e1;
}

.btn-danger {
    background: #ef4444;
    color: #fff;
}

.btn-danger:hover {
    background: #dc2626;
}

.btn-warning {
    background: #f59e0b;
    color: #fff;
}

.btn-warning:hover {
    background: #d97706;
}

.btn-sm {
    padding: 4px 10px;
    font-size: 13px;
}

/* ==========================================================================
   Badges
   ========================================================================== */

.badge {
    display: inline-block;
    padding: 2px 8px;
    border-radius: 999px;
    font-size: 11px;
    font-weight: 600;
    letter-spacing: 0.02em;
}

.badge-green  { background: #dcfce7; color: #16a34a; }
.badge-gray   { background: #f1f5f9; color: #64748b; }
.badge-red    { background: #fee2e2; color: #dc2626; }
.badge-yellow { background: #fef9c3; color: #b45309; }
.badge-blue   { background: #dbeafe; color: #1d4ed8; }

/* ==========================================================================
   Cards
   ========================================================================== */

.profile-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 24px;
    align-items: start;
}

.card {
    background: #fff;
    border: 1px solid #e2e8f0;
    border-radius: 8px;
    padding: 24px;
}

.card-title {
    font-size: 15px;
    font-weight: 600;
    color: #0f172a;
    margin: 0 0 20px;
    padding-bottom: 12px;
    border-bottom: 1px solid #f1f5f9;
}

/* ==========================================================================
   Modals
   ========================================================================== */

.modal {
    border: 1px solid #e2e8f0;
    border-radius: 10px;
    padding: 28px;
    width: min(440px, calc(100vw - 32px));
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.15);
}

.modal::backdrop {
    background: rgba(15, 23, 42, 0.4);
}

.modal-title {
    font-size: 16px;
    font-weight: 600;
    margin: 0 0 20px;
    color: #0f172a;
}

.modal-actions {
    display: flex;
    gap: 8px;
    margin-top: 20px;
}

/* ==========================================================================
   Misc
   ========================================================================== */

.text-muted {
    color: #94a3b8;
    font-size: 14px;
}

/* ==========================================================================
   Responsive Adjustments
   ========================================================================== */

@media (max-width: 640px) {
    .flash-stack {
        top: 16px;
        right: 16px;
        left: 16px;
        width: auto;
    }

    .form-row {
        grid-template-columns: 1fr;
    }

    .page {
        padding: 16px;
    }
}