/* ==========================================================================
   FileSyncProtect — Portal de Acceso Neutro (login.css)
   Estilo minimalista, oscuro y desacoplado de la identidad de la aplicación
   ========================================================================== */

:root {
    --bg-primary: #0a0e17;
    --bg-card: rgba(18, 24, 38, 0.85);
    --border-card: rgba(255, 255, 255, 0.08);
    --border-focus: #3b82f6;
    --text-primary: #f8fafc;
    --text-secondary: #94a3b8;
    --accent: #2563eb;
    --accent-hover: #1d4ed8;
    --accent-glow: rgba(37, 99, 235, 0.35);
    --danger: #ef4444;
    --danger-bg: rgba(239, 68, 68, 0.12);
    --danger-border: rgba(239, 68, 68, 0.3);
    --font-sans: 'Outfit', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-mono: 'JetBrains Mono', monospace;
}

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

body {
    background-color: var(--bg-primary);
    background-image: 
        radial-gradient(circle at 50% 20%, rgba(37, 99, 235, 0.08) 0%, transparent 50%),
        radial-gradient(circle at 80% 80%, rgba(99, 102, 241, 0.05) 0%, transparent 40%);
    color: var(--text-primary);
    font-family: var(--font-sans);
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 1.5rem;
    overflow-x: hidden;
}

.login-wrapper {
    width: 100%;
    max-width: 420px;
}

.login-card {
    background: var(--bg-card);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid var(--border-card);
    border-radius: 16px;
    padding: 2.5rem 2rem;
    box-shadow: 
        0 20px 40px -15px rgba(0, 0, 0, 0.6),
        0 0 0 1px rgba(255, 255, 255, 0.05);
    animation: fadeIn 0.4s ease-out;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(12px) scale(0.98);
    }
    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

.login-header {
    text-align: center;
    margin-bottom: 2rem;
}

.login-icon {
    font-size: 2.5rem;
    margin-bottom: 0.75rem;
    display: inline-block;
    filter: drop-shadow(0 4px 12px rgba(37, 99, 235, 0.3));
}

.login-title {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--text-primary);
    letter-spacing: -0.02em;
    margin-bottom: 0.5rem;
}

.login-subtitle {
    font-size: 0.9rem;
    color: var(--text-secondary);
    line-height: 1.4;
}

.login-form {
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.form-label {
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--text-secondary);
}

.form-input {
    background: rgba(10, 14, 23, 0.8);
    border: 1px solid var(--border-card);
    border-radius: 10px;
    padding: 0.85rem 1rem;
    font-family: var(--font-mono);
    font-size: 1rem;
    color: var(--text-primary);
    outline: none;
    transition: all 0.2s ease;
}

.form-input:focus {
    border-color: var(--border-focus);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.2);
}

.login-error {
    background: var(--danger-bg);
    border: 1px solid var(--danger-border);
    border-radius: 8px;
    padding: 0.75rem 1rem;
    font-size: 0.85rem;
    color: #fca5a5;
    line-height: 1.4;
}

.login-error.hidden {
    display: none;
}

.btn-submit {
    background: var(--accent);
    color: #ffffff;
    border: none;
    border-radius: 10px;
    padding: 0.9rem 1.5rem;
    font-family: var(--font-sans);
    font-size: 0.95rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
    box-shadow: 0 4px 14px var(--accent-glow);
    display: flex;
    align-items: center;
    justify-content: center;
}

.btn-submit:hover:not(:disabled) {
    background: var(--accent-hover);
    transform: translateY(-1px);
    box-shadow: 0 6px 18px var(--accent-glow);
}

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

.btn-submit:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}