/* Variables de colores - Tema ROCA */
:root {
    --color-primary: #000000;
    --color-accent: #E2F50F;
    --color-accent-rgb: 226, 245, 15;
    --color-white: #FFFFFF;
    --color-gray-50: #F9FAFB;
    --color-gray-100: #F3F4F6;
    --color-gray-200: #E5E7EB;
    --color-gray-300: #D1D5DB;
    --color-gray-400: #9CA3AF;
    --color-gray-500: #6B7280;
    --color-gray-600: #4B5563;
    --color-gray-700: #374151;
    --color-gray-800: #1F2937;
    --color-gray-900: #111827;
    
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px 0 rgba(0, 0, 0, 0.06);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    
    --radius-sm: 0.375rem;
    --radius: 0.5rem;
    --radius-md: 0.75rem;
    --radius-lg: 1rem;
    
    --transition: all 0.2s ease;
}

/* Reset y estilos base */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background-color: var(--color-gray-900);
    color: var(--color-white);
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 1rem;
    background-image: 
        radial-gradient(circle at 15% 50%, rgba(var(--color-accent-rgb), 0.05) 0%, transparent 20%),
        radial-gradient(circle at 85% 30%, rgba(var(--color-accent-rgb), 0.03) 0%, transparent 20%);
}

/* Contenedor principal */
.login-container {
    width: 100%;
    max-width: 420px;
    margin: 0 auto;
    animation: fadeIn 0.6s ease-out;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Header */
.login-header {
    text-align: center;
    margin-bottom: 2.5rem;
}

.logo-container {
    margin-bottom: 1.5rem;
}

.logo {
    width: 80px;
    height: 80px;
    border-radius: var(--radius-lg);
    object-fit: cover;
    border: 2px solid var(--color-accent);
    padding: 4px;
    background: var(--color-white);
    box-shadow: var(--shadow-lg);
    transition: var(--transition);
}

.logo:hover {
    transform: scale(1.05);
    box-shadow: var(--shadow-xl);
}

.login-header h1 {
    font-size: 1.875rem;
    font-weight: 700;
    color: var(--color-white);
    margin-bottom: 0.5rem;
    letter-spacing: -0.025em;
}

.subtitle {
    font-size: 0.875rem;
    color: var(--color-gray-400);
    font-weight: 400;
}

/* Tarjeta de login */
.login-card {
    background: var(--color-gray-800);
    border-radius: var(--radius-lg);
    padding: 2.5rem;
    box-shadow: var(--shadow-xl);
    border: 1px solid var(--color-gray-700);
    margin-bottom: 1.5rem;
    transition: var(--transition);
}

.login-card:hover {
    border-color: var(--color-accent);
    box-shadow: 0 20px 25px -5px rgba(226, 245, 15, 0.1), 0 10px 10px -5px rgba(226, 245, 15, 0.04);
}

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

.card-header h2 {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--color-white);
}

/* Alertas */
.alert {
    padding: 1rem;
    border-radius: var(--radius);
    margin-bottom: 1.5rem;
    font-size: 0.875rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    animation: slideIn 0.3s ease;
}

@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateX(-10px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

.alert-error {
    background: rgba(220, 38, 38, 0.1);
    border: 1px solid rgba(220, 38, 38, 0.2);
    color: #FCA5A5;
}

.alert-success {
    background: rgba(34, 197, 94, 0.1);
    border: 1px solid rgba(34, 197, 94, 0.2);
    color: #86EFAC;
}

/* Formulario */
.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--color-gray-300);
    margin-bottom: 0.5rem;
}

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

.input-with-icon .icon {
    position: absolute;
    left: 1rem;
    width: 1.25rem;
    height: 1.25rem;
    color: var(--color-gray-500);
    pointer-events: none;
    z-index: 10;
}

.input-with-icon input {
    width: 100%;
    padding: 0.875rem 1rem 0.875rem 3rem;
    background: var(--color-gray-900);
    border: 1px solid var(--color-gray-700);
    border-radius: var(--radius);
    color: var(--color-white);
    font-size: 0.875rem;
    transition: var(--transition);
}

.input-with-icon input:focus {
    outline: none;
    border-color: var(--color-accent);
    box-shadow: 0 0 0 3px rgba(226, 245, 15, 0.1);
}

.input-with-icon input::placeholder {
    color: var(--color-gray-500);
}

.toggle-password {
    position: absolute;
    right: 1rem;
    background: none;
    border: none;
    padding: 0;
    cursor: pointer;
    color: var(--color-gray-500);
    transition: var(--transition);
}

.toggle-password:hover {
    color: var(--color-accent);
}

.toggle-password .icon {
    position: static;
    width: 1.25rem;
    height: 1.25rem;
}

/* Opciones del formulario */
.form-options {
    margin-bottom: 1.5rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.checkbox {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    cursor: pointer;
    user-select: none;
    font-size: 0.875rem;
    color: var(--color-gray-400);
}

.checkbox input[type="checkbox"] {
    width: 1rem;
    height: 1rem;
    border-radius: var(--radius-sm);
    border: 1px solid var(--color-gray-600);
    background: var(--color-gray-900);
    cursor: pointer;
    appearance: none;
    position: relative;
    transition: var(--transition);
}

.checkbox input[type="checkbox"]:checked {
    background: var(--color-accent);
    border-color: var(--color-accent);
}

.checkbox input[type="checkbox"]:checked::after {
    content: '✓';
    position: absolute;
    color: var(--color-primary);
    font-size: 0.75rem;
    font-weight: bold;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
}

/* Botones */
.btn {
    padding: 0.875rem 1.5rem;
    border-radius: var(--radius);
    font-size: 0.875rem;
    font-weight: 500;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    border: none;
    cursor: pointer;
    transition: var(--transition);
}

.btn-block {
    width: 100%;
}

.btn-primary {
    background: linear-gradient(135deg, var(--color-accent) 0%, #D4E90F 100%);
    color: var(--color-primary);
    font-weight: 600;
}

.btn-primary:hover {
    background: linear-gradient(135deg, #D4E90F 0%, var(--color-accent) 100%);
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

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

.btn-primary .icon-right {
    width: 1.25rem;
    height: 1.25rem;
}

/* Enlaces */
.form-links {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 1rem;
    margin-top: 1.5rem;
    padding-top: 1.5rem;
    border-top: 1px solid var(--color-gray-700);
}

.link {
    font-size: 0.875rem;
    color: var(--color-gray-400);
    text-decoration: none;
    transition: var(--transition);
}

.link:hover {
    color: var(--color-accent);
}

.separator {
    color: var(--color-gray-600);
    font-size: 0.875rem;
}

/* Footer */
.login-footer {
    text-align: center;
    margin-top: 2rem;
    padding-top: 2rem;
    border-top: 1px solid var(--color-gray-700);
}

.login-footer p {
    font-size: 0.75rem;
    color: var(--color-gray-500);
    margin-bottom: 0.25rem;
}

.version {
    font-size: 0.75rem;
    color: var(--color-accent);
    font-weight: 500;
}

/* Nota de seguridad */
.security-notice {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 1rem;
    background: rgba(226, 245, 15, 0.05);
    border: 1px solid rgba(226, 245, 15, 0.1);
    border-radius: var(--radius);
    font-size: 0.75rem;
    color: var(--color-gray-400);
}

.security-notice .icon-small {
    width: 1rem;
    height: 1rem;
    color: var(--color-accent);
}

/* Responsive */
@media (max-width: 640px) {
    .login-container {
        padding: 0;
    }
    
    .login-card {
        padding: 2rem 1.5rem;
    }
    
    .login-header h1 {
        font-size: 1.5rem;
    }
    
    .card-header h2 {
        font-size: 1.25rem;
    }
}

@media (max-width: 480px) {
    .form-links {
        flex-direction: column;
        gap: 0.75rem;
    }
    
    .separator {
        display: none;
    }
}