/* ════════════════════════════════════════════════════════════════════════
   ILMS Enterprise Frontend — Auth + Public pages stylesheet
   Self-contained: defines its own design tokens so it works even when
   app.css is NOT loaded (the blank layout only loads this file).
   Modern, professional, responsive. SRS §67/§118.
   ════════════════════════════════════════════════════════════════════════ */

:root {
    --ilms-primary: #1d4ed8;
    --ilms-primary-dark: #1e3a8a;
    --ilms-primary-light: #3b82f6;
    --ilms-accent: #0ea5e9;
    --ilms-bg: #f4f6fb;
    --ilms-surface: #ffffff;
    --ilms-border: #e2e8f0;
    --ilms-border-focus: #93c5fd;
    --ilms-text: #1e293b;
    --ilms-text-light: #475569;
    --ilms-muted: #64748b;
    --ilms-danger: #dc2626;
    --ilms-danger-bg: #fef2f2;
    --ilms-success: #16a34a;
    --ilms-success-bg: #f0fdf4;
    --ilms-warning: #d97706;
    --ilms-warning-bg: #fffbeb;
    --ilms-info: #0891b2;
    --ilms-info-bg: #ecfeff;
    --ilms-radius: 12px;
    --ilms-radius-sm: 8px;
    --ilms-shadow-sm: 0 1px 2px rgba(15,23,42,.05);
    --ilms-shadow: 0 4px 6px -1px rgba(15,23,42,.08), 0 2px 4px -2px rgba(15,23,42,.04);
    --ilms-shadow-lg: 0 20px 50px -10px rgba(15,23,42,.25);
    --ilms-shadow-glow: 0 0 0 4px rgba(29,78,216,.12);
    --ilms-font: 'Inter', system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html, body { height: 100%; }
body {
    font-family: var(--ilms-font);
    color: var(--ilms-text);
    line-height: 1.6;
    font-size: 15px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}
a { color: var(--ilms-primary); text-decoration: none; transition: color .15s; }
a:hover { color: var(--ilms-primary-dark); text-decoration: underline; }

/* ── Buttons (self-contained — NOT dependent on app.css) ────────────────── */
.btn {
    display: inline-flex; align-items: center; justify-content: center; gap: 8px;
    padding: 12px 20px; border: 0; border-radius: var(--ilms-radius-sm);
    font-weight: 600; cursor: pointer; text-decoration: none; font-size: 15px;
    font-family: var(--ilms-font); transition: all .2s ease; line-height: 1.4;
    -webkit-appearance: none; appearance: none;
}
.btn:focus-visible { outline: none; box-shadow: var(--ilms-shadow-glow); }
.btn-primary {
    background: linear-gradient(135deg, var(--ilms-primary) 0%, var(--ilms-primary-dark) 100%);
    color: #fff; box-shadow: 0 4px 12px rgba(29,78,216,.3);
}
.btn-primary:hover {
    background: linear-gradient(135deg, var(--ilms-primary-light) 0%, var(--ilms-primary) 100%);
    transform: translateY(-1px); box-shadow: 0 6px 16px rgba(29,78,216,.4);
    text-decoration: none; color: #fff;
}
.btn-primary:active { transform: translateY(0); }
.btn-primary:disabled { opacity: .6; cursor: not-allowed; transform: none; box-shadow: none; }
.btn-secondary {
    background: var(--ilms-surface); color: var(--ilms-text);
    border: 1.5px solid var(--ilms-border);
}
.btn-secondary:hover { border-color: var(--ilms-primary); color: var(--ilms-primary); text-decoration: none; }
.btn-block { width: 100%; }
.btn-lg { padding: 14px 24px; font-size: 16px; min-height: 52px; }

/* ── Flash / callout messages ───────────────────────────────────────────── */
.flash {
    padding: 12px 16px; border-radius: var(--ilms-radius-sm); margin-bottom: 16px;
    font-size: 14px; font-weight: 500; display: flex; align-items: flex-start; gap: 10px;
}
.flash-error { background: var(--ilms-danger-bg); color: #991b1b; border-left: 4px solid var(--ilms-danger); }
.flash-info  { background: var(--ilms-info-bg); color: #155e75; border-left: 4px solid var(--ilms-info); }
.flash-success { background: var(--ilms-success-bg); color: #166534; border-left: 4px solid var(--ilms-success); }
.callout { padding: 12px 16px; border-radius: var(--ilms-radius-sm); margin-bottom: 16px; font-size: 14px; }
.callout-info { background: var(--ilms-info-bg); color: #155e75; border-left: 4px solid var(--ilms-info); }
.callout small { font-size: 13px; }

/* ── Form elements (self-contained) ─────────────────────────────────────── */
.field { margin-bottom: 18px; }
.field label {
    display: block; margin-bottom: 7px; font-weight: 600; font-size: 14px;
    color: var(--ilms-text); letter-spacing: .01em;
}
.field-error { display: block; color: var(--ilms-danger); font-size: 13px; margin-top: 4px; font-weight: 500; }
.req { color: var(--ilms-danger); }
.field-checkbox label { display: flex; align-items: center; gap: 8px; font-weight: 400; cursor: pointer; }
.field-checkbox input[type="checkbox"] { width: 18px; height: 18px; accent-color: var(--ilms-primary); }
input, select, textarea {
    font-family: var(--ilms-font); font-size: 15px; color: var(--ilms-text);
}
input[type="text"], input[type="email"], input[type="password"], input[type="tel"],
input[type="date"], input[type="number"], select, textarea {
    width: 100%; padding: 12px 14px; border: 1.5px solid var(--ilms-border);
    border-radius: var(--ilms-radius-sm); background: var(--ilms-surface);
    transition: border-color .2s, box-shadow .2s; outline: none;
}
input:focus, select:focus, textarea:focus {
    border-color: var(--ilms-primary); box-shadow: var(--ilms-shadow-glow);
}
input::placeholder { color: #94a3b8; }
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.form-actions { margin-top: 8px; }

/* Auth input wrapper with icon */
.auth-form .input-wrap {
    display: flex; align-items: center; gap: 10px;
    border: 1.5px solid var(--ilms-border); border-radius: var(--ilms-radius-sm);
    padding: 0 14px; background: var(--ilms-surface); transition: border-color .2s, box-shadow .2s;
}
.auth-form .input-wrap:focus-within { border-color: var(--ilms-primary); box-shadow: var(--ilms-shadow-glow); }
.auth-form .input-wrap i { color: var(--ilms-muted); font-size: 15px; }
.auth-form .input-wrap input {
    flex: 1; border: 0; outline: 0; background: transparent; padding: 12px 0; font-size: 15px; box-shadow: none;
}
.auth-form .input-wrap input:focus { box-shadow: none; }
.toggle-pw { background: none; border: 0; color: var(--ilms-muted); cursor: pointer; padding: 4px; font-size: 15px; }
.toggle-pw:hover { color: var(--ilms-primary); }

/* ── Utility classes used by portal views ───────────────────────────────── */
.muted { color: var(--ilms-muted); }
.center { text-align: center; }
.small { font-size: 13px; }
.brand-mark { color: var(--ilms-primary); }
.brand-mark.center { text-align: center; font-size: 36px; margin-bottom: 12px; }
.auth-wrap { min-height: 100vh; display: flex; align-items: center; justify-content: center; padding: 20px; }
.auth-card.narrow { max-width: 420px; }
.auth-card.wide { max-width: 640px; }
.auth-card h1 { font-size: 22px; margin-bottom: 8px; color: var(--ilms-text); }
.auth-card .muted.center { margin-bottom: 20px; }

/* ══ Auth pages layout (login/forgot/reset) — split-screen ════════════════ */
body.auth-body {
    background: linear-gradient(135deg, var(--header, #0f172a) 0%, var(--ilms-primary-dark) 50%, var(--ilms-primary) 100%);
    min-height: 100vh; display: flex; align-items: center; justify-content: center; padding: 20px;
    position: relative; overflow-x: hidden;
}
body.auth-body::before {
    content: ''; position: absolute; top: -50%; right: -20%; width: 600px; height: 600px;
    background: radial-gradient(circle, color-mix(in srgb, var(--ilms-primary) 15%, transparent) 0%, transparent 70%);
    border-radius: 50%; pointer-events: none;
}
body.auth-body::after {
    content: ''; position: absolute; bottom: -30%; left: -10%; width: 500px; height: 500px;
    background: radial-gradient(circle, color-mix(in srgb, var(--ilms-accent) 12%, transparent) 0%, transparent 70%);
    border-radius: 50%; pointer-events: none;
}

.auth-card {
    background: var(--ilms-surface); border-radius: 18px; padding: 40px 36px; width: 100%; max-width: 440px;
    box-shadow: var(--ilms-shadow-lg); position: relative; z-index: 1;
    border: 1px solid rgba(255,255,255,.2);
}
.auth-brand { text-align: center; margin-bottom: 28px; }
.auth-logo { height: 56px; max-width: 56px; object-fit: contain; border-radius: 12px; }
.auth-mark { font-size: 44px; color: var(--ilms-primary); display: inline-flex; width: 64px; height: 64px;
    align-items: center; justify-content: center; background: #eff6ff; border-radius: 16px; margin-bottom: 4px; }
.auth-brand h1 { margin-top: 12px; font-size: 22px; color: var(--ilms-text); font-weight: 700; }
.auth-brand .auth-subtitle { color: var(--ilms-muted); font-size: 14px; margin-top: 4px; }
.auth-intro { color: var(--ilms-text-light); margin-bottom: 20px; font-size: 14px; line-height: 1.5; }
.auth-links { text-align: center; margin-top: 20px; }
.auth-links a { color: var(--ilms-primary); text-decoration: none; font-size: 14px; font-weight: 500; }
.auth-links a:hover { text-decoration: underline; }
.auth-foot {
    text-align: center; margin-top: 24px; border-top: 1px solid var(--ilms-border);
    padding-top: 18px;
}
.auth-foot a { color: var(--ilms-muted); text-decoration: none; font-size: 13px; }
.auth-foot a:hover { color: var(--ilms-primary); }

/* Login button — ensure always visible */
.auth-form .btn-primary { min-height: 50px; font-size: 16px; margin-top: 4px; }

/* ══ Key-value display (track results, profile) ═══════════════════════════ */
.kv { display: grid; grid-template-columns: max-content 1fr; gap: 8px 20px; }
.kv dt { color: var(--ilms-muted); font-size: 14px; }
.kv dd { font-weight: 600; }

/* ── Responsive auth (SRS §67/§118 — usable at 320px) ───────────────────── */
@media (max-width: 480px) {
    body.auth-body { padding: 12px; }
    .auth-card { padding: 28px 22px; border-radius: 14px; }
    .auth-brand h1 { font-size: 19px; }
    .auth-mark { font-size: 36px; width: 56px; height: 56px; }
    .auth-form .input-wrap { min-height: 50px; }
    .auth-form .input-wrap input { font-size: 16px; } /* prevent iOS auto-zoom */
    .btn { min-height: 50px; font-size: 16px; }
    .form-grid { grid-template-columns: 1fr; }
}
@media (max-width: 320px) {
    .auth-card { padding: 22px 16px; }
    .kv { grid-template-columns: 1fr; gap: 4px; }
}