/* Estilos base para el login - Se actualizarán con los colores del logo */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(135deg, #1e3a8a 0%, #3b82f6 50%, #60a5fa 100%);
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
}

/* Fondo deportivo animado - Colores CAN */
body::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: 
        radial-gradient(circle at 20% 80%, rgba(30, 58, 138, 0.3) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(255, 255, 255, 0.15) 0%, transparent 50%),
        radial-gradient(circle at 40% 40%, rgba(59, 130, 246, 0.2) 0%, transparent 50%);
    animation: float 6s ease-in-out infinite;
}

@keyframes float {
    0%, 100% { transform: translateY(0px) rotate(0deg); }
    50% { transform: translateY(-20px) rotate(2deg); }
}

.login-container {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-radius: 20px;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
    padding: 40px;
    width: 100%;
    max-width: 400px;
    position: relative;
    z-index: 1;
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.logo-container {
    text-align: center;
    margin-bottom: 30px;
}

.logo {
    max-width: 120px;
    height: auto;
    margin-bottom: 15px;
    filter: drop-shadow(0 4px 8px rgba(0, 0, 0, 0.1));
}

.system-title {
    color: #1e3a8a;
    font-size: 22px;
    font-weight: 700;
    margin-bottom: 5px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.1);
    line-height: 1.2;
}

.system-subtitle {
    color: #3b82f6;
    font-size: 14px;
    font-weight: 600;
    letter-spacing: 1px;
}

.form-group {
    margin-bottom: 25px;
    position: relative;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    color: #333;
    font-weight: 600;
    font-size: 14px;
}

.form-control {
    width: 100%;
    padding: 15px 20px;
    border: 2px solid #e1e5e9;
    border-radius: 12px;
    font-size: 16px;
    transition: all 0.3s ease;
    background: rgba(255, 255, 255, 0.9);
}

.form-control:focus {
    outline: none;
    border-color: #3b82f6;
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
    transform: translateY(-2px);
}

.btn-login {
    width: 100%;
    padding: 15px;
    background: linear-gradient(135deg, #1e3a8a 0%, #3b82f6 50%, #60a5fa 100%);
    color: white;
    border: none;
    border-radius: 12px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    text-transform: uppercase;
    letter-spacing: 1px;
    box-shadow: 0 4px 15px rgba(59, 130, 246, 0.3);
}

.btn-login:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 25px rgba(59, 130, 246, 0.4);
    background: linear-gradient(135deg, #60a5fa 0%, #3b82f6 50%, #1e3a8a 100%);
}

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

.alert {
    padding: 12px 15px;
    border-radius: 8px;
    margin-bottom: 20px;
    font-size: 14px;
}

.alert-danger {
    background-color: #f8d7da;
    border: 1px solid #f5c6cb;
    color: #721c24;
}

.alert-success {
    background-color: #d4edda;
    border: 1px solid #c3e6cb;
    color: #155724;
}

/* Efectos deportivos - Colores CAN */
.sport-icon {
    position: absolute;
    opacity: 0.1;
    font-size: 60px;
    color: #1e3a8a;
    animation: bounce 3s infinite;
}

.sport-icon:nth-child(1) {
    top: 10%;
    left: 10%;
    animation-delay: 0s;
}

.sport-icon:nth-child(2) {
    top: 20%;
    right: 15%;
    animation-delay: 1s;
}

.sport-icon:nth-child(3) {
    bottom: 15%;
    left: 20%;
    animation-delay: 2s;
}

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% { transform: translateY(0); }
    40% { transform: translateY(-10px); }
    60% { transform: translateY(-5px); }
}

/* Responsive */
@media (max-width: 480px) {
    .login-container {
        margin: 20px;
        padding: 30px 25px;
    }
    
    .system-title {
        font-size: 18px;
        letter-spacing: 0.3px;
    }
    
    .system-subtitle {
        font-size: 12px;
    }
}

/* Efectos adicionales para temática deportiva - Colores CAN */
.login-container::before {
    content: '';
    position: absolute;
    top: -50px;
    right: -50px;
    width: 100px;
    height: 100px;
    background: radial-gradient(circle, rgba(59, 130, 246, 0.1) 0%, transparent 70%);
    border-radius: 50%;
    animation: pulse 4s ease-in-out infinite;
}

.login-container::after {
    content: '';
    position: absolute;
    bottom: -30px;
    left: -30px;
    width: 60px;
    height: 60px;
    background: radial-gradient(circle, rgba(96, 165, 250, 0.1) 0%, transparent 70%);
    border-radius: 50%;
    animation: pulse 3s ease-in-out infinite reverse;
}

@keyframes pulse {
    0%, 100% { transform: scale(1); opacity: 0.1; }
    50% { transform: scale(1.2); opacity: 0.2; }
}

/* Estilo para placeholder del logo deportivo - Colores CAN */
.logo-placeholder {
    width: 120px;
    height: 120px;
    background: linear-gradient(135deg, #1e3a8a 0%, #3b82f6 50%, #60a5fa 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 24px;
    font-weight: bold;
    margin: 0 auto 15px;
    box-shadow: 0 8px 25px rgba(59, 130, 246, 0.3);
    position: relative;
    overflow: hidden;
}

.logo-placeholder::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    animation: shine 3s infinite;
}

@keyframes shine {
    0% { left: -100%; }
    100% { left: 100%; }
}
/* Spinner para botón de login */
.spinner {
    display: inline-block;
    width: 16px;
    height: 16px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    border-top-color: white;
    animation: spin 1s ease-in-out infinite;
    margin-right: 8px;
}

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

/* Mejorar el estado disabled del botón */
.btn-login:disabled {
    opacity: 0.7;
    cursor: not-allowed;
    transform: none !important;
}

.btn-login:disabled:hover {
    transform: none !important;
    box-shadow: 0 4px 15px rgba(59, 130, 246, 0.3) !important;
}