@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;650;700;800&display=swap');

:root {
    --color-bg: #f5f6f9;
    --color-surface: #ffffff;
    --color-surface-muted: #f1f3f7;
    --color-border: #e4e7ed;
    --color-border-strong: #d4d8e1;
    --color-text: #161a24;
    --color-text-muted: #666f82;
    --color-text-faint: #9aa2b1;
    --color-primary: #2554e8;
    --color-primary-dark: #1b3fc0;
    --color-primary-subtle: #eaf0ff;
    --color-danger: #dc2626;
    --color-danger-dark: #b91c1c;
    --color-danger-subtle: #fef2f2;
    --color-success: #16a34a;
    --color-success-subtle: #f0fdf4;
    --color-warning: #d97706;
    --color-warning-subtle: #fffbeb;
    --radius-sm: 7px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --shadow-xs: 0 1px 2px rgba(16, 24, 40, 0.04);
    --shadow-sm: 0 1px 3px rgba(16, 24, 40, 0.06), 0 1px 2px rgba(16, 24, 40, 0.04);
    --shadow-md: 0 4px 12px rgba(16, 24, 40, 0.08), 0 2px 4px rgba(16, 24, 40, 0.04);
    --shadow-focus: 0 0 0 3px var(--color-primary-subtle);
    --sidebar-width: 248px;
    --font-size-xs: .76rem;
    --font-size-sm: .86rem;
    --font-size-base: .93rem;
    --font-size-lg: 1.1rem;
    --font-size-xl: 1.35rem;
    --font-size-2xl: 1.6rem;
    --ease: cubic-bezier(.2, 0, 0, 1);
}

* { box-sizing: border-box; }

body {
    margin: 0;
    font-family: 'Inter', system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
    background: var(--color-bg);
    color: var(--color-text);
    font-size: var(--font-size-base);
    -webkit-font-smoothing: antialiased;
    text-rendering: optimizeLegibility;
}

h1:focus { outline: none; }

a { color: var(--color-primary); text-decoration: none; }
a:hover { color: var(--color-primary-dark); text-decoration: underline; }

:focus-visible {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
    border-radius: 4px;
}

/* ---------- Shell ---------- */

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

.app-sidebar {
    width: var(--sidebar-width);
    flex-shrink: 0;
    background: #141828;
    color: #cdd2e0;
    padding: 1.1rem 0;
    display: flex;
    flex-direction: column;
}

.app-sidebar-brand {
    display: flex;
    align-items: center;
    gap: .65rem;
    font-weight: 700;
    font-size: var(--font-size-lg);
    letter-spacing: -.01em;
    color: #fff;
    padding: 0 1.3rem 1.1rem;
    border-bottom: 1px solid rgba(255,255,255,.08);
    margin-bottom: .75rem;
}

.app-sidebar-brand svg { flex-shrink: 0; filter: drop-shadow(0 2px 6px rgba(37, 84, 232, .35)); }

.app-nav { display: flex; flex-direction: column; gap: .1rem; padding: 0 .6rem; }

.app-nav a {
    display: flex;
    align-items: center;
    color: #aab0c4;
    padding: .55rem .8rem;
    font-size: var(--font-size-sm);
    font-weight: 500;
    border-inline-start: 3px solid transparent;
    border-radius: var(--radius-sm);
    transition: background-color .15s var(--ease), color .15s var(--ease);
}

.app-nav a:hover { background: rgba(255,255,255,.06); color: #fff; text-decoration: none; }
.app-nav a.active {
    background: rgba(37, 84, 232, .18);
    color: #fff;
    border-inline-start: 3px solid var(--color-primary);
    font-weight: 600;
}

.app-main { flex: 1; display: flex; flex-direction: column; min-width: 0; }

.app-topbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: .8rem 1.75rem;
    background: var(--color-surface);
    border-bottom: 1px solid var(--color-border);
}

.app-topbar-user { color: var(--color-text-muted); font-size: var(--font-size-sm); font-weight: 500; }

.app-topbar-actions {
    display: flex;
    align-items: center;
    gap: .6rem;
}

.app-topbar-actions form { margin: 0; }

.app-content { padding: 1.75rem; flex: 1; }

.page-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 1.5rem;
}

.page-header h1 { font-size: var(--font-size-2xl); font-weight: 700; letter-spacing: -.015em; margin: 0; color: var(--color-text); }

/* ---------- Buttons ---------- */

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: .4rem;
    padding: .5rem 1.05rem;
    border-radius: var(--radius-sm);
    border: 1px solid var(--color-border-strong);
    background: var(--color-surface);
    color: var(--color-text);
    font-size: var(--font-size-sm);
    font-weight: 500;
    cursor: pointer;
    transition: background-color .15s var(--ease), border-color .15s var(--ease), box-shadow .15s var(--ease), transform .1s var(--ease);
}

.btn:hover { background: var(--color-surface-muted); text-decoration: none; border-color: var(--color-text-faint); }
.btn:active { transform: translateY(1px); }

.btn-primary { background: var(--color-primary); border-color: var(--color-primary); color: #fff; box-shadow: var(--shadow-xs); }
.btn-primary:hover { background: var(--color-primary-dark); border-color: var(--color-primary-dark); }

.btn-danger { background: var(--color-danger); border-color: var(--color-danger); color: #fff; box-shadow: var(--shadow-xs); }
.btn-danger:hover { background: var(--color-danger-dark); border-color: var(--color-danger-dark); }

.btn-sm { padding: .32rem .65rem; font-size: var(--font-size-xs); }

.btn:disabled { opacity: .55; cursor: not-allowed; transform: none; }

/* ---------- Surfaces ---------- */

.card {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-xs);
    overflow: hidden;
}

.form-card {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-xs);
    padding: 1.75rem;
}

/* ---------- Tables ---------- */

table.data-table {
    width: 100%;
    border-collapse: collapse;
    background: var(--color-surface);
}

table.data-table th, table.data-table td {
    padding: .7rem 1rem;
    text-align: start;
    border-bottom: 1px solid var(--color-border);
    font-size: var(--font-size-sm);
}

table.data-table th {
    background: var(--color-surface-muted);
    font-weight: 600;
    font-size: var(--font-size-xs);
    text-transform: uppercase;
    letter-spacing: .04em;
    color: var(--color-text-muted);
}

table.data-table tbody tr { transition: background-color .1s var(--ease); }
table.data-table tbody tr:hover { background: var(--color-surface-muted); }
table.data-table tr:last-child td { border-bottom: none; }

.pagination { display: flex; align-items: center; gap: .75rem; margin-top: 1.25rem; font-size: var(--font-size-sm); color: var(--color-text-muted); }

/* ---------- Forms ---------- */

.form-field { margin-bottom: 1.1rem; }
.form-field label { display: block; font-weight: 600; margin-bottom: .35rem; font-size: var(--font-size-sm); color: var(--color-text); }
.form-field input, .form-field select, .form-field textarea {
    width: 100%;
    padding: .58rem .75rem;
    border: 1px solid var(--color-border-strong);
    border-radius: var(--radius-sm);
    font-size: var(--font-size-base);
    font-family: inherit;
    background: var(--color-surface);
    color: var(--color-text);
    transition: border-color .15s var(--ease), box-shadow .15s var(--ease);
}
.form-field input:focus, .form-field select:focus, .form-field textarea:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: var(--shadow-focus);
}
.form-field textarea { resize: vertical; }

.form-row { display: flex; gap: 1.1rem; }
.form-row > .form-field { flex: 1; }

/* ---------- Badges ---------- */

.badge {
    display: inline-flex;
    align-items: center;
    padding: .22rem .6rem;
    border-radius: 999px;
    font-size: var(--font-size-xs);
    font-weight: 600;
    letter-spacing: .01em;
}

.badge-neutral { background: var(--color-surface-muted); color: var(--color-text-muted); }
.badge-success { background: var(--color-success-subtle); color: var(--color-success); }
.badge-warning { background: var(--color-warning-subtle); color: var(--color-warning); }
.badge-danger { background: var(--color-danger-subtle); color: var(--color-danger); }

/* ---------- Stat cards ---------- */

.stat-grid {
    display: flex;
    gap: 1.1rem;
    flex-wrap: wrap;
    margin-bottom: 1.75rem;
}

.stat-card {
    position: relative;
    display: block;
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-xs);
    padding: 1.35rem 1.5rem;
    min-width: 170px;
    flex: 1;
    overflow: hidden;
    color: inherit;
    transition: box-shadow .15s var(--ease), transform .1s var(--ease), border-color .15s var(--ease);
}

a.stat-card:hover {
    text-decoration: none;
    box-shadow: var(--shadow-md);
    border-color: var(--color-border-strong);
    transform: translateY(-1px);
}

.stat-card::before {
    content: "";
    position: absolute;
    inset-inline-start: 0;
    top: 0;
    bottom: 0;
    width: 3px;
    background: var(--color-primary);
    opacity: .85;
}

.stat-card.stat-card-warning::before { background: var(--color-warning); }
.stat-card.stat-card-warning .stat-value { color: var(--color-warning); }

.stat-card .stat-value {
    font-size: 1.9rem;
    font-weight: 800;
    letter-spacing: -.02em;
    color: var(--color-text);
    line-height: 1.15;
}

.stat-card .stat-label {
    font-size: var(--font-size-sm);
    color: var(--color-text-muted);
    margin-top: .3rem;
    font-weight: 500;
}

/* ---------- Empty / alert states ---------- */

.empty-state {
    color: var(--color-text-muted);
    padding: 3.5rem 2rem;
    text-align: center;
    font-size: var(--font-size-sm);
}

.alert { padding: .75rem 1.05rem; border-radius: var(--radius-sm); margin-bottom: 1.1rem; font-size: var(--font-size-sm); font-weight: 500; }
.alert-danger { background: var(--color-danger-subtle); color: var(--color-danger-dark); }
.alert-success { background: var(--color-success-subtle); color: #15803d; }

/* ---------- Images ---------- */

.image-upload-preview {
    width: 96px;
    height: 96px;
    object-fit: cover;
    border-radius: var(--radius-sm);
    border: 1px solid var(--color-border);
    display: block;
    margin-bottom: .5rem;
    background: var(--color-surface-muted);
}

.image-slot {
    display: flex;
    align-items: flex-start;
    gap: .5rem;
    margin-bottom: .5rem;
}

/* ---------- Modal ---------- */

.modal-backdrop {
    position: fixed;
    inset: 0;
    background: rgba(12, 15, 26, .5);
    backdrop-filter: blur(2px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    animation: fade-in .12s var(--ease);
}

.modal-card {
    background: var(--color-surface);
    border-radius: var(--radius-lg);
    padding: 1.75rem;
    max-width: 420px;
    width: 100%;
    box-shadow: var(--shadow-md);
    animation: modal-in .15s var(--ease);
}

.modal-actions { display: flex; justify-content: flex-end; gap: .6rem; margin-top: 1.4rem; }

@keyframes fade-in { from { opacity: 0; } to { opacity: 1; } }
@keyframes modal-in { from { opacity: 0; transform: translateY(6px) scale(.98); } to { opacity: 1; transform: none; } }

/* ---------- Blazor error UI ---------- */

.blazor-error-boundary {
    background: url(data:image/svg+xml;base64,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) no-repeat 1rem/1.8rem, #b32121;
    padding: 1rem 1rem 1rem 3.7rem;
    color: white;
}

[dir="rtl"] .blazor-error-boundary {
    background-position: right 1rem center;
    padding-inline: 1rem 3.7rem;
}

.blazor-error-boundary::after { content: "An error has occurred."; }

/* ---------- Responsive ---------- */

@media (max-width: 860px) {
    .app-shell { flex-direction: column; }
    .app-sidebar { width: 100%; padding: .6rem 0; }
    .app-sidebar-brand { padding: 0 1rem .75rem; margin-bottom: .5rem; }
    .app-nav { flex-direction: row; overflow-x: auto; padding: 0 .5rem; }
    .app-nav a { white-space: nowrap; border-inline-start: none; border-bottom: 3px solid transparent; }
    .app-nav a.active { border-inline-start: none; border-bottom: 3px solid var(--color-primary); }
    .app-content { padding: 1.1rem; }
    .form-row { flex-direction: column; }
    .app-topbar { padding: .7rem 1.1rem; flex-wrap: wrap; gap: .5rem; }
}