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

:root {
    --primary: #6366f1;
    --primary-dark: #4f46e5;
    --primary-light: #818cf8;
    --secondary: #ec4899;
    --success: #10b981;
    --danger: #ef4444;
    --dark: #0f172a;
    --gray: #64748b;
    --light: #f8fafc;
    --white: #ffffff;
}

body {
    font-family: 'Inter', sans-serif;
    margin: 0;
    padding: 0;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
}

.login-background {
    width: 100%;
    max-width: 550px;
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 2rem;
}

.login-container {
    background: var(--white);
    padding: 3rem;
    border-radius: 24px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
    animation: slideInLeft 0.6s ease-out;
}

@keyframes slideInLeft {
    from {
        opacity: 0;
        transform: translateX(-30px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

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

.logo {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    border-radius: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.5rem;
    box-shadow: 0 10px 30px rgba(99, 102, 241, 0.3);
}

.logo i {
    font-size: 2.5rem;
    color: var(--white);
}

.login-header h1 {
    font-size: 2rem;
    font-weight: 800;
    color: var(--dark);
    margin-bottom: 0.5rem;
}

.login-header p {
    color: var(--gray);
    font-size: 1rem;
}

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

.form-group label {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-weight: 600;
    color: var(--dark);
    margin-bottom: 0.5rem;
    font-size: 0.95rem;
}

.form-group label i {
    color: var(--primary);
}

.form-group input {
    width: 100%;
    padding: 1rem;
    border: 2px solid #e2e8f0;
    border-radius: 12px;
    font-size: 1rem;
    font-family: 'Inter', sans-serif;
    transition: all 0.3s;
    background: var(--light);
}

.form-group input:focus {
    outline: none;
    border-color: var(--primary);
    background: var(--white);
    box-shadow: 0 0 0 4px rgba(99, 102, 241, 0.1);
}

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

.toggle-password {
    position: absolute;
    right: 1rem;
    background: none;
    border: none;
    color: var(--gray);
    cursor: pointer;
    padding: 0.5rem;
    transition: color 0.3s;
}

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

.form-options {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
    font-size: 0.875rem;
}

.remember-me {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    cursor: pointer;
    color: var(--dark);
}

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

.forgot-password {
    color: var(--primary);
    text-decoration: none;
    font-weight: 600;
    transition: color 0.3s;
}

.forgot-password:hover {
    color: var(--primary-dark);
}

.btn-login {
    width: 100%;
    padding: 1.125rem;
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    color: var(--white);
    border: none;
    border-radius: 12px;
    font-size: 1.05rem;
    font-weight: 600;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;
    transition: all 0.3s;
    box-shadow: 0 4px 15px rgba(99, 102, 241, 0.3);
}

.btn-login:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(99, 102, 241, 0.4);
}

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

.btn-login i {
    transition: transform 0.3s;
}

.btn-login:hover i {
    transform: translateX(5px);
}

.error-message {
    margin-top: 1rem;
    padding: 1rem;
    background: #fee2e2;
    color: #991b1b;
    border-radius: 8px;
    font-size: 0.875rem;
    text-align: center;
    display: none;
    animation: shake 0.5s;
}

.error-message.show {
    display: block;
}

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

.login-footer {
    margin-top: 2rem;
    text-align: center;
    color: var(--gray);
    font-size: 0.9rem;
}

.login-footer a {
    color: var(--primary);
    text-decoration: none;
    font-weight: 600;
}

.login-footer a:hover {
    text-decoration: underline;
}

/* Features Showcase */
.features-showcase {
    color: var(--white);
    animation: slideInRight 0.6s ease-out;
}

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

.features-showcase h2 {
    font-size: 2.5rem;
    font-weight: 800;
    margin-bottom: 2rem;
    line-height: 1.2;
}

.feature-item {
    display: flex;
    align-items: flex-start;
    gap: 1.5rem;
    margin-bottom: 2rem;
    padding: 1.5rem;
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    border-radius: 16px;
    border: 1px solid rgba(255, 255, 255, 0.2);
    transition: all 0.3s;
}

.feature-item:hover {
    background: rgba(255, 255, 255, 0.15);
    transform: translateX(10px);
}

.feature-item i {
    font-size: 2.5rem;
    min-width: 60px;
    height: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 12px;
}

.feature-item h3 {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
}

.feature-item p {
    opacity: 0.9;
    line-height: 1.5;
}

/* Loading State */
.btn-login.loading {
    pointer-events: none;
    opacity: 0.7;
}

.btn-login.loading .btn-text::after {
    content: '';
    display: inline-block;
    width: 16px;
    height: 16px;
    border: 2px solid var(--white);
    border-top-color: transparent;
    border-radius: 50%;
    animation: spin 0.6s linear infinite;
    margin-left: 0.5rem;
}

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

/* Responsive */
@media (max-width: 1024px) {
    .login-background {
        grid-template-columns: 1fr;
        max-width: 500px;
    }

    .features-showcase {
        display: none;
    }

    .login-container {
        padding: 2rem;
    }
}

@media (max-width: 480px) {
    .login-container {
        padding: 1.5rem;
    }

    .login-header h1 {
        font-size: 1.5rem;
    }

    .logo {
        width: 60px;
        height: 60px;
    }

    .logo i {
        font-size: 2rem;
    }
}