/* ============================================================
   Octacer ID — Design System
   Plain CSS component layer (no DaisyUI). Loaded AFTER Tailwind
   CDN so utilities still compose. Deep indigo / slate, light only.
   ============================================================ */

:root {
    /* Brand — deep indigo */
    --brand-50:  #eef2ff;
    --brand-100: #e0e7ff;
    --brand-500: #6366f1;
    --brand-600: #4f46e5;
    --brand-700: #4338ca;
    --brand-800: #3730a3;

    /* Ink / slate neutrals */
    --ink-900: #0f172a;
    --ink-700: #334155;
    --ink-600: #475569;
    --ink-500: #64748b;
    --ink-400: #94a3b8;
    --line:    #e2e8f0;
    --line-2:  #f1f5f9;
    --surface: #ffffff;
    --bg:      #f8fafc;

    /* State */
    --success: #059669;
    --warning: #d97706;
    --danger:  #dc2626;
    --info:    #2563eb;

    --radius:   0.75rem;   /* 12px */
    --radius-lg: 1rem;     /* 16px */
    --ring: 0 0 0 4px rgba(79, 70, 229, .15);
    --shadow-sm: 0 1px 2px 0 rgba(15, 23, 42, .04), 0 1px 3px 0 rgba(15, 23, 42, .06);
    --shadow-md: 0 4px 6px -1px rgba(15, 23, 42, .07), 0 2px 4px -2px rgba(15, 23, 42, .05);
    --shadow-lg: 0 12px 30px -8px rgba(15, 23, 42, .18);
}

html { -webkit-text-size-adjust: 100%; }
body {
    font-family: 'Inter', ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
    color: var(--ink-900);
    -webkit-font-smoothing: antialiased;
    text-rendering: optimizeLegibility;
    letter-spacing: -0.01em;
}

/* Premium page backdrop */
.oc-app-bg {
    background-color: var(--bg);
    background-image:
        radial-gradient(60rem 60rem at 110% -10%, rgba(79, 70, 229, .06), transparent 60%),
        radial-gradient(40rem 40rem at -10% 10%, rgba(99, 102, 241, .05), transparent 55%);
    background-attachment: fixed;
}

/* ---------- Cards ---------- */
.oc-card {
    background: var(--surface);
    border: 1px solid var(--line);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    transition: box-shadow .2s ease, border-color .2s ease, transform .2s ease;
}
.oc-card-hover:hover { box-shadow: var(--shadow-md); border-color: #dbe1ea; }
.oc-card-head {
    display: flex; align-items: center; justify-content: space-between;
    gap: .75rem; padding: .875rem 1.25rem;
    border-bottom: 1px solid var(--line-2);
}
.oc-card-title { font-size: .875rem; font-weight: 600; color: var(--ink-900); display: flex; align-items: center; gap: .5rem; }

/* Small tinted icon tile used in section headers */
.oc-icon-box { width: 2.25rem; height: 2.25rem; border-radius: .625rem; display: inline-flex; align-items: center; justify-content: center; flex-shrink: 0; }

/* ---------- Buttons ---------- */
.btn {
    display: inline-flex; align-items: center; justify-content: center; gap: .5rem;
    font-size: .875rem; font-weight: 600; line-height: 1;
    padding: .625rem 1rem; border-radius: .625rem;
    border: 1px solid transparent; cursor: pointer;
    transition: background-color .15s ease, border-color .15s ease, box-shadow .15s ease, transform .05s ease, color .15s ease;
    white-space: nowrap; user-select: none;
}
.btn:focus-visible { outline: none; box-shadow: var(--ring); }
.btn:active { transform: translateY(.5px) scale(.995); }
.btn:disabled, .btn[disabled], .btn[aria-disabled="true"] { opacity: .6; pointer-events: none; }
.btn-sm { padding: .4rem .7rem; font-size: .8125rem; border-radius: .5rem; }
.btn-lg { padding: .8rem 1.25rem; font-size: .9375rem; }
.btn-block { width: 100%; }

.btn-primary {
    color: #fff;
    background: linear-gradient(180deg, var(--brand-500), var(--brand-600));
    box-shadow: 0 1px 2px rgba(15,23,42,.12), inset 0 1px 0 rgba(255,255,255,.12);
}
.btn-primary:hover { background: linear-gradient(180deg, var(--brand-600), var(--brand-700)); }

.btn-outline {
    color: var(--ink-700); background: var(--surface); border-color: var(--line);
    box-shadow: var(--shadow-sm);
}
.btn-outline:hover { background: #f8fafc; border-color: #cbd5e1; color: var(--ink-900); }

.btn-ghost { color: var(--ink-600); background: transparent; }
.btn-ghost:hover { background: #f1f5f9; color: var(--ink-900); }

.btn-danger { color: #fff; background: var(--danger); }
.btn-danger:hover { background: #b91c1c; }

.btn-white { color: var(--brand-700); background: #fff; }
.btn-white:hover { background: #eef2ff; }

/* Button loading state — set aria-busy="true" (or .is-loading) to reveal spinner */
.btn[aria-busy="true"], .btn.is-loading { pointer-events: none; position: relative; color: transparent !important; }
.btn[aria-busy="true"] > *, .btn.is-loading > * { visibility: hidden; }
.btn[aria-busy="true"]::after, .btn.is-loading::after {
    content: ""; position: absolute; width: 1.05em; height: 1.05em;
    border: 2px solid currentColor; border-right-color: transparent; border-radius: 50%;
    color: #fff; animation: oc-spin .6s linear infinite; visibility: visible;
}
.btn-outline[aria-busy="true"]::after, .btn-ghost[aria-busy="true"]::after,
.btn-outline.is-loading::after, .btn-ghost.is-loading::after { color: var(--brand-600); }

/* ---------- Form fields ---------- */
.field-label { display: block; font-size: .78rem; font-weight: 600; color: var(--ink-700); margin-bottom: .375rem; }
.field-hint  { font-size: .72rem; color: var(--ink-400); margin-top: .35rem; }
.field-error { display: block; font-size: .72rem; color: var(--danger); margin-top: .35rem; }

.field-input, .field-select, .field-textarea {
    width: 100%; font-size: .875rem; color: var(--ink-900);
    background: var(--surface); border: 1px solid var(--line);
    border-radius: .625rem; padding: .625rem .75rem;
    transition: border-color .15s ease, box-shadow .15s ease, background .15s ease;
    -webkit-appearance: none; appearance: none;
}
.field-textarea { line-height: 1.5; }
.field-input::placeholder, .field-textarea::placeholder { color: #b4bccb; }
.field-input:focus, .field-select:focus, .field-textarea:focus {
    outline: none; border-color: var(--brand-500); box-shadow: var(--ring); background: #fff;
}
.field-input:disabled, .field-select:disabled { background: #f8fafc; color: var(--ink-400); cursor: not-allowed; }
.field-select { background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%2364748b' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='m6 9 6 6 6-6'/%3E%3C/svg%3E"); background-repeat: no-repeat; background-position: right .75rem center; padding-right: 2.25rem; }

/* Input group: leading icon + input */
.field-group { display: flex; align-items: center; gap: .5rem; width: 100%; background: var(--surface); border: 1px solid var(--line); border-radius: .625rem; padding: 0 .75rem; transition: border-color .15s ease, box-shadow .15s ease; }
.field-group:focus-within { border-color: var(--brand-500); box-shadow: var(--ring); }
.field-group > input, .field-group > .grow { flex: 1 1 auto; min-width: 0; border: none; background: transparent; font-size: .875rem; color: var(--ink-900); padding: .625rem 0; }
.field-group > input:focus { outline: none; }
.field-group.is-error { border-color: var(--danger); }
.field-group.is-success { border-color: var(--success); }

/* Validation states from ASP.NET / jquery-validation */
.field-input.input-validation-error, .field-select.input-validation-error, .field-textarea.input-validation-error { border-color: var(--danger); }
.field-validation-error { color: var(--danger); font-size: .72rem; margin-top: .35rem; display: block; }

/* ---------- Badges ---------- */
.badge { display: inline-flex; align-items: center; gap: .3rem; font-size: .68rem; font-weight: 600; padding: .18rem .5rem; border-radius: 999px; line-height: 1.2; }
.badge-brand   { color: var(--brand-700); background: var(--brand-50); }
.badge-slate   { color: var(--ink-600);  background: #f1f5f9; }
.badge-success { color: #047857; background: #ecfdf5; }
.badge-warning { color: #b45309; background: #fffbeb; }
.badge-danger  { color: #b91c1c; background: #fef2f2; }
.badge-info    { color: #1d4ed8; background: #eff6ff; }

/* ---------- Alerts ---------- */
.oc-alert { display: flex; gap: .75rem; align-items: flex-start; padding: .875rem 1rem; border-radius: var(--radius); border: 1px solid; font-size: .85rem; }
.oc-alert-success { background: #ecfdf5; border-color: #a7f3d0; color: #065f46; }
.oc-alert-warning { background: #fffbeb; border-color: #fde68a; color: #92400e; }
.oc-alert-danger  { background: #fef2f2; border-color: #fecaca; color: #991b1b; }
.oc-alert-info    { background: #eff6ff; border-color: #bfdbfe; color: #1e40af; }

/* ---------- Toggle switch ---------- */
.oc-toggle { position: relative; display: inline-block; width: 2.5rem; height: 1.4rem; flex-shrink: 0; }
.oc-toggle input { position: absolute; opacity: 0; width: 0; height: 0; }
.oc-toggle-track { position: absolute; inset: 0; background: #cbd5e1; border-radius: 999px; transition: background .2s ease; }
.oc-toggle-track::before { content: ""; position: absolute; height: 1.05rem; width: 1.05rem; left: .18rem; top: .175rem; background: #fff; border-radius: 50%; transition: transform .2s ease; box-shadow: 0 1px 2px rgba(0,0,0,.2); }
.oc-toggle input:checked + .oc-toggle-track { background: var(--brand-600); }
.oc-toggle input:checked + .oc-toggle-track::before { transform: translateX(1.1rem); }
.oc-toggle input:focus-visible + .oc-toggle-track { box-shadow: var(--ring); }
.oc-toggle input:disabled + .oc-toggle-track { opacity: .5; }
.oc-toggle-success input:checked + .oc-toggle-track { background: var(--success); }

/* ---------- Checkbox ---------- */
.oc-check { width: 1.05rem; height: 1.05rem; border-radius: .3rem; border: 1.5px solid #cbd5e1; accent-color: var(--brand-600); cursor: pointer; }
.oc-check-success { accent-color: var(--success); }

/* ---------- Spinner / skeleton ---------- */
@keyframes oc-spin { to { transform: rotate(360deg); } }
.oc-spinner { display: inline-block; width: 1.25rem; height: 1.25rem; border: 2.5px solid var(--brand-100); border-right-color: var(--brand-600); border-radius: 50%; animation: oc-spin .6s linear infinite; }
.oc-spinner-sm { width: 1rem; height: 1rem; border-width: 2px; }

@keyframes oc-shimmer { 100% { transform: translateX(100%); } }
.oc-skeleton { position: relative; overflow: hidden; background: #eef1f5; border-radius: .5rem; }
.oc-skeleton::after { content: ""; position: absolute; inset: 0; transform: translateX(-100%); background: linear-gradient(90deg, transparent, rgba(255,255,255,.6), transparent); animation: oc-shimmer 1.4s infinite; }

/* ---------- Divider with label ---------- */
.oc-divider { display: flex; align-items: center; gap: .75rem; color: var(--ink-400); font-size: .72rem; font-weight: 500; }
.oc-divider::before, .oc-divider::after { content: ""; flex: 1; height: 1px; background: var(--line); }

/* Submit button spinner while its form is mid-htmx-request */
form.htmx-request button[type="submit"].btn { color: transparent !important; pointer-events: none; position: relative; }
form.htmx-request button[type="submit"].btn > * { visibility: hidden; }
form.htmx-request button[type="submit"].btn::after {
    content: ""; position: absolute; width: 1.05em; height: 1.05em; visibility: visible;
    border: 2px solid #fff; border-right-color: transparent; border-radius: 50%;
    animation: oc-spin .6s linear infinite;
}

/* ---------- htmx global top progress bar ---------- */
#oc-progress { position: fixed; top: 0; left: 0; height: 3px; width: 0; z-index: 100; background: linear-gradient(90deg, var(--brand-500), var(--brand-700)); box-shadow: 0 0 10px rgba(79,70,229,.5); opacity: 0; transition: width .2s ease, opacity .3s ease; }
#oc-progress.active { opacity: 1; }

/* Respect reduced motion */
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after { animation-duration: .01ms !important; transition-duration: .01ms !important; }
}