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

:root {
    --primary-blue: #003366;
    --secondary-blue: #0055a5;
    --logo-blue: #1687eb;
    --white: #ffffff;
    --text-dark: #333333;
    --text-light: #888888;
    --border-color: #003366;
    --input-border: #003366;
    --shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
    --shadow-hover: 0 6px 25px rgba(0, 0, 0, 0.15);
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    background: var(--primary-blue);
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0;
    margin: 0;
}

/* Logo y Container - MÓVIL */
.login-wrapper {
    width: 100%;
    max-width: 100%;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 30px 20px;
    animation: fadeIn 0.6s ease-in;
}

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

/* Logo Section */
.logo-section {
    text-align: center;
    margin-bottom: 40px;
}

.logo-container {
    display: inline-block;
    background-color: var(--logo-blue);
    padding: 20px 30px;
    border-radius: 0;
    box-shadow: none;
    margin-bottom: 20px;
}

.logo-text {
    font-size: 3.5rem;
    font-weight: 700;
    color: var(--white);
    letter-spacing: 0;
    border: none;
    padding: 0;
    display: inline-block;
    font-family: Georgia, serif;
}

.company-name {
    color: var(--white);
    font-size: 1.5rem;
    font-weight: 600;
    letter-spacing: 4px;
    margin-top: 15px;
}

/* Login Card - MÓVIL */
.login-card {
    background-color: var(--white);
    border-radius: 30px;
    padding: 45px 35px;
    box-shadow: var(--shadow);
    width: 100%;
    max-width: 380px;
    animation: slideUp 0.6s ease-out;
}

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.login-header {
    text-align: center;
    margin-bottom: 35px;
}

.login-header h2 {
    color: var(--text-light);
    font-size: 1rem;
    font-weight: 400;
    margin: 0;
}

/* Form Styles */
.login-form {
    width: 100%;
}

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

.form-group label {
    display: block;
    color: var(--text-dark);
    font-size: 0.95rem;
    font-weight: 500;
    margin-bottom: 8px;
}

.form-group input {
    width: 100%;
    padding: 14px 16px;
    border: 2px solid var(--input-border);
    border-radius: 10px;
    font-size: 1rem;
    color: var(--text-dark);
    transition: all 0.3s ease;
    background-color: var(--white);
}

.form-group input:focus {
    outline: none;
    border-color: var(--primary-blue);
    box-shadow: 0 0 0 3px rgba(0, 51, 102, 0.1);
}

.form-group input::placeholder {
    color: #ccc;
}

/* Checkbox Recordarme */
.remember-me {
    display: flex;
    align-items: center;
    margin-bottom: 25px;
    user-select: none;
}

.remember-me input[type="checkbox"] {
    width: 18px;
    height: 18px;
    margin-right: 8px;
    cursor: pointer;
    accent-color: var(--primary-blue);
}

.remember-me label {
    color: var(--text-dark);
    font-size: 0.95rem;
    cursor: pointer;
    margin: 0;
}

/* Error Message */
.error-message {
    background-color: #fee;
    color: #c00;
    padding: 12px 15px;
    border-radius: 8px;
    margin-bottom: 20px;
    display: none;
    border-left: 4px solid #c00;
    font-size: 0.9rem;
}

.error-message.show {
    display: block;
    animation: shake 0.5s ease;
}

@keyframes shake {
    0%, 100% { transform: translateX(0); }
    25% { transform: translateX(-10px); }
    75% { transform: translateX(10px); }
}

/* Button */
.btn-login {
    width: 100%;
    padding: 15px;
    background-color: var(--primary-blue);
    color: var(--white);
    border: none;
    border-radius: 10px;
    font-size: 1.05rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 2px 8px rgba(0, 51, 102, 0.2);
}

.btn-login:hover {
    background-color: var(--secondary-blue);
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(0, 51, 102, 0.3);
}

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

.btn-login:disabled {
    background-color: #ccc;
    cursor: not-allowed;
    transform: none;
}

/* Loading Spinner */
.btn-login.loading {
    position: relative;
    color: transparent;
}

.btn-login.loading::after {
    content: '';
    position: absolute;
    width: 20px;
    height: 20px;
    top: 50%;
    left: 50%;
    margin-left: -10px;
    margin-top: -10px;
    border: 3px solid rgba(255, 255, 255, 0.3);
    border-top-color: white;
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

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

/* Responsive Design */
@media (max-width: 768px) {
    .login-wrapper {
        padding: 30px 20px;
    }

    .logo-text {
        font-size: 3rem;
    }

    .company-name {
        font-size: 1.3rem;
    }

    .login-card {
        padding: 40px 30px;
        max-width: 360px;
    }
}

@media (max-width: 480px) {
    .login-wrapper {
        padding: 20px 15px;
    }

    .logo-container {
        padding: 18px 25px;
    }

    .logo-text {
        font-size: 2.8rem;
    }

    .company-name {
        font-size: 1.2rem;
        letter-spacing: 3px;
    }

    .login-card {
        padding: 35px 25px;
        max-width: 340px;
        border-radius: 25px;
    }

    .form-group input {
        padding: 13px 15px;
    }

    .btn-login {
        padding: 14px;
    }
}

/* Desktop - Layout de dos columnas */
@media (min-width: 1024px) {
    body {
        background: var(--white);
        padding: 0;
    }

    .login-wrapper {
        flex-direction: row;
        max-width: 100%;
        min-height: 100vh;
        padding: 0;
        animation: none;
    }

    /* Lado izquierdo - Azul */
    .logo-section {
        width: 50%;
        background-color: var(--primary-blue);
        display: flex;
        flex-direction: column;
        align-items: center;
        justify-content: center;
        min-height: 100vh;
        margin-bottom: 0;
    }

    .logo-container {
        padding: 25px 40px;
        margin-bottom: 25px;
    }

    .logo-text {
        font-size: 4.5rem;
    }

    .company-name {
        font-size: 1.8rem;
        letter-spacing: 5px;
    }

    /* Lado derecho - Blanco con formulario */
    .login-card {
        width: 50%;
        max-width: none;
        background-color: var(--white);
        border-radius: 0;
        box-shadow: none;
        padding: 60px 80px;
        display: flex;
        flex-direction: column;
        justify-content: center;
        min-height: 100vh;
        animation: none;
    }

    .login-header {
        margin-bottom: 40px;
    }

    .login-header h2 {
        font-size: 1.1rem;
    }

    .login-form {
        max-width: 500px;
        margin: 0 auto;
        width: 100%;
    }

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

    .form-group label {
        font-size: 1rem;
        margin-bottom: 10px;
    }

    .form-group input {
        padding: 15px 18px;
        font-size: 1.05rem;
        border-radius: 12px;
    }

    .remember-me {
        margin-bottom: 30px;
    }

    .btn-login {
        padding: 16px;
        font-size: 1.1rem;
        border-radius: 12px;
    }
}

@media (min-width: 1440px) {
    .login-card {
        padding: 80px 120px;
    }

    .login-form {
        max-width: 550px;
    }

    .logo-text {
        font-size: 5rem;
    }

    .company-name {
        font-size: 2rem;
    }
}