:root {
    --brand-orange: #ff6b00;
    --brand-orange-hover: #e05e00;
    --brand-black: #111827;
    --brand-gray-dark: #374151;
    --brand-gray-light: #f8fafc;
    --brand-border: #e2e8f0;
    --brand-white: #ffffff;
}

* {
    box-sizing: border-box;
}

body {
    font-family: 'Segoe UI', system-ui, -apple-system, BlinkMacSystemFont, Roboto, sans-serif;
    background: #f1f5f9;
    background-image: radial-gradient(#cbd5e1 1px, transparent 1px);
    background-size: 24px 24px;
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    margin: 0;
    padding: 20px;
    color: var(--brand-black);
}

.login-card {
    background: var(--brand-white);
    padding: 45px 40px;
    border-radius: 16px;
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.08), 0 5px 15px rgba(0, 0, 0, 0.04);
    border: 1px solid var(--brand-border);
    text-align: center;
    max-width: 440px;
    width: 100%;
}

.brand-header {
    margin-bottom: 25px;
}

.brand-logo-img {
    max-width: 210px;
    height: auto;
    display: block;
    margin: 0 auto 10px auto;
}

.system-subtitle {
    font-size: 0.88rem;
    color: var(--brand-orange);
    font-weight: 700;
    letter-spacing: 1px;
    text-transform: uppercase;
}

h1 {
    color: var(--brand-black);
    font-size: 1.3rem;
    margin-bottom: 25px;
    font-weight: 700;
}

.form-group {
    text-align: left;
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--brand-gray-dark);
    margin-bottom: 6px;
}

.form-group input {
    width: 100%;
    padding: 12px 16px;
    border: 1.5px solid var(--brand-border);
    border-radius: 8px;
    font-size: 0.95rem;
    transition: all 0.25s ease;
    outline: none;
    background-color: var(--brand-white);
    color: var(--brand-black);
}

.form-group input:focus {
    border-color: var(--brand-orange);
    box-shadow: 0 0 0 4px rgba(255, 107, 0, 0.15);
}

.form-group input:disabled {
    background-color: var(--brand-gray-light);
    cursor: not-allowed;
    border-color: var(--brand-border);
}

.forgot-password-container {
    margin-top: 18px;
}

.forgot-password-container a {
    color: var(--brand-gray-dark);
    font-size: 0.85rem;
    text-decoration: none;
    font-weight: 600;
    transition: color 0.2s ease;
}

.forgot-password-container a:hover {
    color: var(--brand-orange);
    text-decoration: underline;
}

.recovery-section {
    display: none;
    margin-top: 20px;
    padding-top: 20px;
    border-top: 1px solid var(--brand-border);
}

.recovery-instructions {
    font-size: 0.85rem;
    color: var(--brand-gray-dark);
    margin-bottom: 15px;
    text-align: left;
    line-height: 1.4;
}

.validation-list {
    list-style: none;
    padding: 0;
    margin: 0 0 20px 0;
    text-align: left;
    font-size: 0.85rem;
}

.validation-list li {
    margin-bottom: 8px;
    transition: color 0.25s ease;
    display: flex;
    align-items: center;
    gap: 6px;
}

.validation-list li span {
    font-weight: bold;
}

.validation-list li.invalid { 
    color: #dc2626; 
}

.validation-list li.valid { 
    color: #16a34a; 
}

.alert-msg {
    display: none;
    padding: 12px 14px;
    border-radius: 8px;
    font-size: 0.85rem;
    margin-bottom: 20px;
    text-align: left;
    line-height: 1.4;
}

.alert-error {
    background-color: #fef2f2;
    color: #991b1b;
    border: 1px solid #fecaca;
}

.alert-success {
    background-color: #f0fdf4;
    color: #166534;
    border: 1px solid #bbf7d0;
}

.btn-ingresar {
    background: var(--brand-orange);
    color: var(--brand-white);
    border: none;
    padding: 14px 20px;
    border-radius: 8px;
    cursor: pointer;
    font-weight: 700;
    font-size: 1rem;
    width: 100%;
    transition: all 0.25s ease;
    box-shadow: 0 4px 12px rgba(255, 107, 0, 0.25);
    display: flex;
    justify-content: center;
    align-items: center;
}

.btn-ingresar:hover {
    background: var(--brand-orange-hover);
    transform: translateY(-1px);
    box-shadow: 0 6px 16px rgba(255, 107, 0, 0.35);
}

.btn-ingresar:disabled {
    background: #cbd5e1;
    color: #94a3b8;
    cursor: not-allowed;
    transform: none;
    box-shadow: none;
}

.btn-secondary {
    background: var(--brand-black);
    box-shadow: 0 4px 12px rgba(17, 24, 39, 0.2);
}

.btn-secondary:hover {
    background: #1f2937;
    box-shadow: 0 6px 16px rgba(17, 24, 39, 0.3);
}

footer {
    margin-top: 35px;
    font-size: 0.78rem;
    color: #94a3b8;
    font-weight: 500;
}

/* Ajuste de logo corporativo */
.brand-logo-img {
    max-width: 200px; /* Tamaño máximo controlado */
    width: 100%;      /* Adaptable en móviles */
    height: auto;     /* Mantiene la relación de aspecto */
    display: block;
    margin: 0 auto 15px auto; /* Centrado y margen inferior */
}