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

body {
    font-family: 'Inter', system-ui, -apple-system, sans-serif;
    background-color: #f4f6f8;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
}

.login-container {
    background: #ffffff;
    border-radius: 16px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.05);
    padding: 48px;
    width: 100%;
    max-width: 420px;
    border: 1px solid #e5e7eb;
    animation: slideUp 0.4s ease-out;
}

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

.logo {
    text-align: center;
    margin-bottom: 32px;
}

.logo h1 {
    font-size: 28px;
    font-weight: 700;
    color: #4f46e5;
    margin-bottom: 4px;
}

.logo p {
    color: #6b7280;
    font-size: 15px;
}

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

.form-label {
    display: block;
    font-size: 14px;
    font-weight: 500;
    color: #374151;
    margin-bottom: 6px;
}

.form-input {
    width: 100%;
    padding: 14px 16px;
    border: 1px solid #d1d5db;
    border-radius: 10px;
    font-size: 15px;
    background: #f9fafb;
    transition: border 0.3s ease, box-shadow 0.3s ease;
    outline: none;
}

.form-input:focus {
    border-color: #4f46e5;
    background-color: #fff;
    box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.1);
}

.password-container {
    position: relative;
}

.password-toggle {
    position: absolute;
    right: 12px;
    top: 65%;
    transform: translateY(-50%);
    background: none;
    border: none;
    color: #6b7280;
    cursor: pointer;
    font-size: 16px;
    padding: 4px;
}

.password-toggle:hover {
    color: #4f46e5;
}

.remember-forgot {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 28px;
    font-size: 14px;
}

.remember-me {
    display: flex;
    align-items: center;
    gap: 8px;
}

.remember-me input[type="checkbox"] {
    width: 16px;
    height: 16px;
    accent-color: #4f46e5;
}

.forgot-password {
    color: #4f46e5;
    text-decoration: none;
    font-weight: 500;
}

.forgot-password:hover {
    text-decoration: underline;
    color: #4338ca;
}

.login-btn {
    width: 100%;
    background-color: #4f46e5;
    color: white;
    border: none;
    padding: 14px 24px;
    border-radius: 10px;
    font-size: 15px;
    font-weight: 600;
    cursor: pointer;
    transition: background 0.3s ease, transform 0.2s ease;
}

.login-btn:hover {
    background-color: #4338ca;
    transform: translateY(-1px);
}

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

.divider {
    text-align: center;
    margin: 28px 0;
    position: relative;
    color: #9ca3af;
    font-size: 14px;
}

.divider::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 0;
    right: 0;
    height: 1px;
    background: #e5e7eb;
    z-index: 1;
}

.divider span {
    background: #fff;
    padding: 0 12px;
    position: relative;
    z-index: 2;
}

.signup-link {
    text-align: center;
    font-size: 14px;
    color: #6b7280;
}

.signup-link a {
    color: #4f46e5;
    font-weight: 600;
    text-decoration: none;
}

.signup-link a:hover {
    text-decoration: underline;
    color: #4338ca;
}

.error-message {
    background: #fef2f2;
    color: #b91c1c;
    padding: 12px 16px;
    border-radius: 8px;
    margin-bottom: 20px;
    font-size: 14px;
    border-left: 4px solid #fca5a5;
    animation: shake 0.4s ease-in-out;
}

@keyframes shake {
    0%, 100% { transform: translateX(0); }
    25% { transform: translateX(-3px); }
    75% { transform: translateX(3px); }
}

@media (max-width: 480px) {
    .login-container {
        padding: 32px 20px;
        margin: 16px;
    }

    .logo h1 {
        font-size: 24px;
    }
}