/* Base Styles */
:root {
    --primary: #4361ee;
    --primary-dark: #3a0ca3;
    --primary-light: #4895ef;
    --light: #f8f9fa;
    --light-gray: #e9ecef;
    --gray: #adb5bd;
    --dark-gray: #495057;
    --dark: #212529;
    --white: #ffffff;
    --success: #4cc9f0;
    --danger: #ff5252;
    
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.1);
    --shadow-input: 0 0 0 3px rgba(67, 97, 238, 0.2);
    
    --transition: all 0.3s ease;
    --radius-sm: 6px;
    --radius-md: 10px;
}

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

body {
    font-family: 'Poppins', sans-serif;
    background-color: #f5f7ff;
    color: var(--dark);
    line-height: 1.6;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
    padding: 20px;
}

/* Auth Card */
.auth-card {
    max-width: 450px;
    width: 100%;
    margin: auto;
    background: var(--white);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-md);
    padding: 2.5rem;
    position: relative;
    overflow: hidden;
}

.auth-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 5px;
    background: linear-gradient(90deg, var(--primary), var(--primary-dark));
}

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

.auth-header h2 {
    font-size: 1.75rem;
    color: var(--primary);
    margin-bottom: 0.5rem;
}

.auth-header p {
    color: var(--dark-gray);
    font-size: 0.95rem;
}

/* Form Styles */
form {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.input-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.input-group label {
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--dark-gray);
}

.input-group input {
    padding: 0.9rem 1rem;
    border: 1px solid var(--light-gray);
    border-radius: var(--radius-sm);
    font-size: 1rem;
    transition: var(--transition);
    background-color: var(--white);
}

.input-group input:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: var(--shadow-input);
}

/* Button Styles */
.btn {
    padding: 0.9rem 1.5rem;
    border-radius: var(--radius-sm);
    font-weight: 500;
    font-size: 1rem;
    cursor: pointer;
    transition: var(--transition);
    border: none;
}

.btn-primary {
    background-color: var(--primary);
    color: var(--white);
    font-weight: 600;
    margin-top: 0.5rem;
}

.btn-primary:hover {
    background-color: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

/* Footer */
.auth-footer {
    text-align: center;
    margin-top: 1.5rem;
    color: var(--dark-gray);
    font-size: 0.9rem;
}

.auth-footer a {
    color: var(--primary);
    text-decoration: none;
    font-weight: 500;
}

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

.footer {
    text-align: center;
    margin-top: auto;
    padding: 1.5rem;
    color: var(--dark-gray);
    font-size: 0.85rem;
}

/* Password Match Indicator */
.password-match {
    display: none;
    font-size: 0.8rem;
    margin-top: 0.25rem;
    align-items: center;
    gap: 0.3rem;
    color: var(--success);
}

.password-match.visible {
    display: flex;
}

.password-match.error {
    color: var(--danger);
}

/* Responsive */
@media (max-width: 480px) {
    .auth-card {
        padding: 1.75rem;
    }
    
    body {
        padding: 15px;
    }
}