/* ================================================================
   LOGIN.CSS — Sistema Universal
   Estilo: industrial-técnico, oscuro, preciso
   ================================================================ */

@import url('https://fonts.googleapis.com/css2?family=DM+Mono:wght@400;500&family=Sora:wght@300;400;500;600;700&display=swap');

/* ── Variables ────────────────────────────────────────────────── */
:root {
    --bg:           #08081e;
    --bg-card:      #0e0e2e;
    --bg-input:     #06061a;
    --bg-brand:     #06061a;
    --border:       #2525a0;
    --border-focus: #1F15E6;
    --text-primary: #eaeaff;
    --text-secondary:#8080cc;
    --text-muted:   #4040aa;
    --accent:       #1F15E6;
    --accent-hover: #1710c8;
    --accent-glow:  rgba(31,21,230,0.2);
    --danger:       #ef4444;
    --danger-bg:    rgba(239,68,68,0.08);
    --success:      #22c55e;
    --tag-bg:       rgba(31,21,230,0.1);
    --tag-border:   rgba(31,21,230,0.25);
    --radius:       10px;
    --radius-sm:    6px;
    --font-body:    'Sora', sans-serif;
    --font-mono:    'DM Mono', monospace;
    --shadow-card:  0 24px 64px rgba(0,0,0,0.6);
    --transition:   0.2s ease;
}



body {
    min-height: 100vh;
    font-family: var(--font-body);
    background: linear-gradient(135deg, #1F15E6 0%, #0f0a8a 30%, #08081e 70%);
    color: var(--text-primary);
    display: flex;
    align-items: stretch;
    overflow: hidden;
}

/* ── Fondo ────────────────────────────────────────────────────── */
.bg-grid {
    position: fixed;
    inset: 0;
    background-image:
        linear-gradient(rgba(31,21,230,0.05) 1px, transparent 1px),
        linear-gradient(90deg, rgba(59,130,246,0.03) 1px, transparent 1px);
    background-size: 40px 40px;
    pointer-events: none;
    z-index: 0;
}

.bg-glow {
    position: fixed;
    top: -20%;
    left: -10%;
    width: 60vw;
    height: 60vw;
    background: radial-gradient(circle, rgba(59,130,246,0.06) 0%, transparent 70%);
    pointer-events: none;
    z-index: 0;
}

/* ── Layout ───────────────────────────────────────────────────── */
.login-wrapper {
    position: relative;
    z-index: 1;
    display: flex;
    width: 100vw;
    min-height: 100vh;
}

/* ── Panel izquierdo (branding) ───────────────────────────────── */
.brand-panel {
    width: 380px;
    min-width: 320px;
    background: var(--bg-brand);
    border-right: 1px solid var(--border);
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    padding: 3rem 2.5rem;
    position: relative;
    overflow: hidden;
    flex-shrink: 0;
}

/* Detalle decorativo */
.brand-panel::after {
    content: '';
    position: absolute;
    top: 0; right: 0;
    width: 1px;
    height: 100%;
    background: linear-gradient(
        to bottom,
        transparent,
        var(--accent) 30%,
        var(--accent) 70%,
        transparent
    );
    opacity: 0.3;
}

.brand-content {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    animation: slideUp 0.6s ease both;
}

.brand-logo {
    color: var(--accent);
    animation: fadeIn 0.8s ease 0.1s both;
}

.brand-title {
    font-size: 2.8rem;
    font-weight: 700;
    line-height: 1.1;
    letter-spacing: -0.03em;
    color: var(--text-primary);
}

.brand-sub {
    font-size: 0.9rem;
    color: var(--text-secondary);
    line-height: 1.6;
    font-weight: 300;
}

.brand-tags {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.tag {
    font-family: var(--font-mono);
    font-size: 0.7rem;
    font-weight: 500;
    letter-spacing: 0.08em;
    color: var(--accent);
    background: var(--tag-bg);
    border: 1px solid var(--tag-border);
    padding: 0.25rem 0.6rem;
    border-radius: var(--radius-sm);
}

.brand-footer {
    display: flex;
    align-items: center;
}

.version {
    font-family: var(--font-mono);
    font-size: 0.72rem;
    color: var(--text-muted);
    letter-spacing: 0.05em;
}

/* ── Panel derecho (formulario) ───────────────────────────────── */
.form-panel {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 2rem;
}

.form-card {
    width: 100%;
    max-width: 420px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: calc(var(--radius) + 4px);
    padding: 2.5rem;
    box-shadow: var(--shadow-card);
    animation: slideUp 0.5s ease 0.15s both;
}

/* ── Encabezado del form ──────────────────────────────────────── */
.form-header {
    margin-bottom: 2rem;
}

.form-header h2 {
    font-size: 1.6rem;
    font-weight: 600;
    letter-spacing: -0.02em;
    color: var(--text-primary);
    margin-bottom: 0.4rem;
}

.form-header p {
    font-size: 0.85rem;
    color: var(--text-secondary);
}

/* ── Campos ───────────────────────────────────────────────────── */
.field-group {
    margin-bottom: 1.25rem;
}

.field-group label {
    display: block;
    font-size: 0.78rem;
    font-weight: 500;
    letter-spacing: 0.04em;
    text-transform: uppercase;
    color: var(--text-secondary);
    margin-bottom: 0.5rem;
}

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

.input-icon {
    position: absolute;
    left: 0.9rem;
    width: 16px;
    height: 16px;
    color: var(--text-muted);
    pointer-events: none;
    flex-shrink: 0;
}

.input-wrap input {
    width: 100%;
    background: var(--bg-input);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 0.75rem 0.9rem 0.75rem 2.6rem;
    font-family: var(--font-mono);
    font-size: 0.9rem;
    color: var(--text-primary);
    outline: none;
    transition: border-color var(--transition), box-shadow var(--transition);
    letter-spacing: 0.02em;
}

.input-wrap input::placeholder {
    color: var(--text-muted);
    font-family: var(--font-body);
    letter-spacing: 0;
}

.input-wrap input:focus {
    border-color: var(--border-focus);
    box-shadow: 0 0 0 3px var(--accent-glow);
}

.input-wrap input.error {
    border-color: var(--danger);
    box-shadow: 0 0 0 3px rgba(239,68,68,0.1);
}

/* Toggle contraseña */
.toggle-pass {
    position: absolute;
    right: 0.75rem;
    background: none;
    border: none;
    padding: 0.25rem;
    cursor: pointer;
    color: var(--text-muted);
    display: flex;
    align-items: center;
    transition: color var(--transition);
}

.toggle-pass:hover { color: var(--text-secondary); }
.toggle-pass svg { width: 16px; height: 16px; }

/* Error de campo */
.field-error {
    display: block;
    font-size: 0.75rem;
    color: var(--danger);
    margin-top: 0.35rem;
    min-height: 1rem;
}

/* ── Opciones ─────────────────────────────────────────────────── */
.form-options {
    margin-bottom: 1.5rem;
}

.checkbox-label {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    cursor: pointer;
    font-size: 0.83rem;
    color: var(--text-secondary);
    user-select: none;
}

.checkbox-label input[type="checkbox"] {
    display: none;
}

.checkbox-custom {
    width: 16px;
    height: 16px;
    border: 1.5px solid var(--border);
    border-radius: 4px;
    background: var(--bg-input);
    flex-shrink: 0;
    transition: all var(--transition);
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
}

.checkbox-label input:checked + .checkbox-custom {
    background: var(--accent);
    border-color: var(--accent);
}

.checkbox-label input:checked + .checkbox-custom::after {
    content: '';
    width: 9px;
    height: 5px;
    border-left: 2px solid #fff;
    border-bottom: 2px solid #fff;
    transform: rotate(-45deg) translateY(-1px);
    display: block;
}

/* ── Alerta de error global ───────────────────────────────────── */
.alert-error {
    display: none;
    background: var(--danger-bg);
    border: 1px solid rgba(239,68,68,0.2);
    border-radius: var(--radius-sm);
    padding: 0.7rem 1rem;
    font-size: 0.83rem;
    color: #fca5a5;
    margin-bottom: 1.25rem;
    line-height: 1.5;
}

.alert-error.visible {
    display: block;
    animation: shake 0.4s ease;
}

/* ── Botón login ──────────────────────────────────────────────── */
.btn-login {
    width: 100%;
    background: var(--accent);
    color: #fff;
    border: none;
    border-radius: var(--radius);
    padding: 0.85rem;
    font-family: var(--font-body);
    font-size: 0.9rem;
    font-weight: 600;
    letter-spacing: 0.02em;
    cursor: pointer;
    transition: background var(--transition), transform var(--transition), box-shadow var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;
    position: relative;
    overflow: hidden;
}

.btn-login:hover:not(:disabled) {
    background: var(--accent-hover);
    box-shadow: 0 4px 20px rgba(59,130,246,0.3);
    transform: translateY(-1px);
}

.btn-login:active:not(:disabled) {
    transform: translateY(0);
}

.btn-login:disabled {
    opacity: 0.7;
    cursor: not-allowed;
}

.btn-loader {
    display: none;
    width: 16px;
    height: 16px;
    border: 2px solid rgba(255,255,255,0.3);
    border-top-color: #fff;
    border-radius: 50%;
    animation: spin 0.7s linear infinite;
}

.btn-login.loading .btn-text { opacity: 0.7; }
.btn-login.loading .btn-loader { display: block; }

/* ── Footer del form ──────────────────────────────────────────── */
.form-footer {
    margin-top: 1.5rem;
    text-align: center;
}

.form-footer p {
    font-size: 0.78rem;
    color: var(--text-muted);
    line-height: 1.5;
}

/* ── Animaciones ──────────────────────────────────────────────── */
@keyframes slideUp {
    from { opacity: 0; transform: translateY(16px); }
    to   { opacity: 1; transform: translateY(0); }
}

@keyframes fadeIn {
    from { opacity: 0; }
    to   { opacity: 1; }
}

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

@keyframes shake {
    0%, 100% { transform: translateX(0); }
    20%       { transform: translateX(-6px); }
    40%       { transform: translateX(6px); }
    60%       { transform: translateX(-4px); }
    80%       { transform: translateX(4px); }
}

/* ── Responsive ───────────────────────────────────────────────── */
@media (max-width: 768px) {
    body { overflow: auto; }

    .login-wrapper { flex-direction: column; }

    .brand-panel {
        width: 100%;
        min-width: unset;
        padding: 2rem 1.5rem 1.5rem;
        border-right: none;
        border-bottom: 1px solid var(--border);
    }

    .brand-panel::after { display: none; }

    .brand-title { font-size: 2rem; }

    .brand-content { flex-direction: row; align-items: center; flex-wrap: wrap; gap: 1rem; }

    .brand-logo { display: none; }

    .form-panel { padding: 1.5rem; }

    .form-card { padding: 2rem 1.5rem; }
}