/* ══════════════════════════════════════════════════
   InstiConnect – Auth pages (login, recuperar, nueva clave)
   ══════════════════════════════════════════════════ */

:root {
    --red:       #c0392b;
    --red-dark:  #96281b;
    --red-glow:  rgba(192, 57, 43, 0.18);
    --dark:      #1e1e2e;
    --text:      #1a1a2e;
    --muted:     #6b7280;
    --border:    #e5e7eb;
    --bg-input:  #f9fafb;
    --radius:    14px;
    --shadow:    0 20px 60px rgba(0, 0, 0, 0.45), 0 4px 16px rgba(0, 0, 0, 0.25);
}

*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }

body {
    font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background-image: url('../images/inicioSecion01H.webp');
    background-size: cover;
    background-position: center;
    background-attachment: fixed;
    position: relative;
    padding: 24px 16px;
}

/* Overlay oscuro sobre la imagen */
body::before {
    content: '';
    position: fixed;
    inset: 0;
    background: linear-gradient(135deg,
        rgba(14, 14, 28, 0.82) 0%,
        rgba(60, 10, 10, 0.72) 100%);
    z-index: 0;
}

/* ── Tarjeta auth ────────────────────────────────── */
.auth-card {
    position: relative;
    z-index: 1;
    background: #ffffff;
    border-radius: 22px;
    padding: 44px 40px 36px;
    width: 100%;
    max-width: 420px;
    box-shadow: var(--shadow);
    animation: slideUp 0.45s cubic-bezier(0.22, 1, 0.36, 1);
}

@keyframes slideUp {
    from { opacity: 0; transform: translateY(28px); }
    to   { opacity: 1; transform: translateY(0); }
}

/* ── Marca / Logo ────────────────────────────────── */
.auth-brand {
    display: flex;
    flex-direction: column;
    align-items: center;
    margin-bottom: 32px;
}

.auth-logo {
    width: 56px;
    height: 56px;
    background: var(--red);
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 12px;
    box-shadow: 0 6px 20px var(--red-glow);
}

.auth-logo svg { width: 30px; height: 30px; }

.auth-brand-name {
    font-size: 1.35rem;
    font-weight: 800;
    color: var(--dark);
    letter-spacing: -0.3px;
}

.auth-brand-sub {
    font-size: 0.78rem;
    color: var(--muted);
    margin-top: 2px;
    letter-spacing: 0.3px;
}

/* ── Encabezado del formulario ───────────────────── */
.auth-heading {
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--text);
    margin-bottom: 4px;
}

.auth-desc {
    font-size: 0.83rem;
    color: var(--muted);
    margin-bottom: 24px;
    line-height: 1.55;
}

/* ── Grupos de campo ─────────────────────────────── */
.field-group {
    margin-bottom: 16px;
}

.field-label {
    display: block;
    font-size: 0.72rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.6px;
    color: var(--muted);
    margin-bottom: 6px;
}

.field-wrap {
    position: relative;
    display: flex;
    align-items: center;
}

.field-input {
    width: 100%;
    padding: 12px 16px;
    border: 1.5px solid var(--border);
    border-radius: 10px;
    font-size: 0.93rem;
    color: var(--text);
    background: var(--bg-input);
    outline: none;
    transition: border-color 0.2s, box-shadow 0.2s;
    font-family: inherit;
}

.field-input:focus {
    border-color: var(--red);
    background: #fff;
    box-shadow: 0 0 0 3.5px var(--red-glow);
}

.field-input::placeholder {
    color: #b0b8c1;
    font-size: 0.88rem;
}

/* Icono del campo */
.field-icon {
    position: absolute;
    left: 13px;
    color: #b0b8c1;
    pointer-events: none;
    font-size: 1rem;
    line-height: 1;
}

.field-input.has-icon { padding-left: 40px; }

/* Toggle contraseña */
.toggle-pass {
    position: absolute;
    right: 13px;
    background: none;
    border: none;
    cursor: pointer;
    color: #b0b8c1;
    padding: 4px;
    display: flex;
    align-items: center;
    transition: color 0.2s;
}
.toggle-pass:hover { color: var(--red); }

/* ── Botón principal ─────────────────────────────── */
.auth-btn {
    width: 100%;
    padding: 14px;
    background: var(--red);
    color: #fff;
    border: none;
    border-radius: 10px;
    font-size: 0.97rem;
    font-weight: 700;
    cursor: pointer;
    letter-spacing: 0.3px;
    transition: background 0.2s, transform 0.12s, box-shadow 0.2s;
    margin-top: 8px;
    box-shadow: 0 4px 14px var(--red-glow);
}

.auth-btn:hover {
    background: var(--red-dark);
    transform: translateY(-1px);
    box-shadow: 0 6px 18px rgba(192, 57, 43, 0.35);
}

.auth-btn:active { transform: translateY(0); }

/* ── Links inferiores ────────────────────────────── */
.auth-footer {
    margin-top: 22px;
    text-align: center;
    font-size: 0.83rem;
    color: var(--muted);
    display: flex;
    justify-content: center;
    gap: 20px;
    flex-wrap: wrap;
}

.auth-footer a {
    color: var(--red);
    font-weight: 600;
    text-decoration: none;
    transition: opacity 0.15s;
}

.auth-footer a:hover { opacity: 0.75; text-decoration: underline; }

/* Divider */
.auth-divider {
    width: 100%;
    height: 1px;
    background: var(--border);
    margin: 20px 0;
}

/* Mensajes de feedback */
.auth-success {
    background: #ecfdf5;
    border: 1px solid #6ee7b7;
    border-radius: 10px;
    padding: 14px 16px;
    color: #065f46;
    font-size: 0.87rem;
    line-height: 1.5;
    display: none;
    text-align: center;
}

.auth-error {
    background: #fef2f2;
    border: 1px solid #fca5a5;
    border-radius: 10px;
    padding: 14px 16px;
    color: #991b1b;
    font-size: 0.87rem;
    line-height: 1.5;
    display: none;
    text-align: center;
}

.field-error {
    font-size: 0.75rem;
    color: var(--red);
    margin-top: 4px;
    display: none;
}

/* ── Tarjetas demo ───────────────────────────────── */
.demo-box {
    position: fixed;
    bottom: 24px;
    background: linear-gradient(135deg, #c0392b 0%, #8e1a10 100%);
    color: #fff;
    border-radius: 16px;
    padding: 16px 18px;
    width: 230px;
    box-shadow: 0 8px 28px rgba(0, 0, 0, 0.45);
    cursor: pointer;
    z-index: 10;
    border: 1.5px solid rgba(255, 255, 255, 0.2);
    animation: pulse-demo 2.4s ease-in-out infinite;
    user-select: none;
    transition: transform 0.15s, box-shadow 0.15s;
}

.demo-box:hover {
    transform: translateY(-3px);
    box-shadow: 0 12px 32px rgba(0, 0, 0, 0.55);
    animation: none;
}

@keyframes pulse-demo {
    0%, 100% { box-shadow: 0 8px 28px rgba(0,0,0,0.45), 0 0 0 0 rgba(192,57,43,0.5); }
    50%       { box-shadow: 0 8px 28px rgba(0,0,0,0.45), 0 0 0 10px rgba(192,57,43,0); }
}

.demo-box .demo-label {
    font-size: 0.65rem;
    letter-spacing: 1.5px;
    text-transform: uppercase;
    opacity: 0.72;
    margin-bottom: 5px;
}

.demo-box .demo-title {
    font-size: 0.95rem;
    font-weight: 700;
    margin-bottom: 10px;
    display: flex;
    align-items: center;
    gap: 6px;
}

.demo-box .demo-cred {
    background: rgba(255, 255, 255, 0.14);
    border-radius: 7px;
    padding: 6px 10px;
    margin-bottom: 5px;
    font-size: 0.72rem;
    line-height: 1.55;
    word-break: break-all;
}

.demo-box .demo-cred span {
    display: block;
    opacity: 0.65;
    font-size: 0.67rem;
    letter-spacing: 0.4px;
    text-transform: uppercase;
    margin-bottom: 1px;
}

.demo-box .demo-btn {
    margin-top: 10px;
    width: 100%;
    background: #fff;
    color: var(--red);
    border: none;
    border-radius: 8px;
    padding: 8px 0;
    font-weight: 700;
    font-size: 0.83rem;
    cursor: pointer;
    letter-spacing: 0.3px;
    transition: background 0.15s;
}

.demo-box .demo-btn:hover { background: #f3f3f3; }

/* ── Loading overlay ─────────────────────────────── */
#loadingOverlay {
    position: fixed;
    inset: 0;
    background: rgba(14, 14, 28, 0.72);
    display: none;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    z-index: 999;
    color: #fff;
    gap: 14px;
    font-size: 0.95rem;
    backdrop-filter: blur(4px);
}

.spinner {
    width: 44px;
    height: 44px;
    border: 3.5px solid rgba(255, 255, 255, 0.15);
    border-top-color: var(--red);
    border-radius: 50%;
    animation: spin 0.75s linear infinite;
}

@keyframes spin { to { transform: rotate(360deg); } }

/* ── Responsive ──────────────────────────────────── */
@media (max-width: 500px) {
    .auth-card { padding: 32px 22px 28px; border-radius: 18px; }
    .demo-box { width: calc(50vw - 18px); padding: 12px 14px; }
    .demo-box .demo-cred { font-size: 0.66rem; }
}

@media (max-width: 380px) {
    .demo-box { font-size: 0.8rem; }
}