@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&family=Playfair+Display:wght@400;600;700&display=swap');

:root {
    --primary-color: #667eea;
    --primary-dark: #5a67d8;
    --secondary-color: #764ba2;
    --accent-color: #f093fb;
    --background-light: #f8fafc;
    --background-white: #ffffff;
    --text-primary: #2d3748;
    --text-secondary: #4a5568;
    --text-muted: #718096;
    --border-color: #e2e8f0;
    --shadow-sm: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px 0 rgba(0, 0, 0, 0.06);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    --border-radius: 12px;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

* {
    box-sizing: border-box;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    margin: 0;
    padding: 20px;
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    color: var(--text-primary);
}

.login-container {
    background: var(--background-white);
    padding: 48px;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-xl);
    width: 100%;
    max-width: 450px;
    text-align: center;
    position: relative;
    overflow: hidden;
    backdrop-filter: blur(10px);
}

.login-container::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 6px;
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
}

.login-container::after {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(102, 126, 234, 0.05) 0%, transparent 70%);
    pointer-events: none;
    z-index: 0;
}

.login-container > * {
    position: relative;
    z-index: 1;
}

h2 {
    font-family: 'Playfair Display', serif;
    margin: 0 0 32px 0;
    font-size: 2.25rem;
    font-weight: 700;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

form {
    width: 100%;
}

.input-field {
    width: 100%;
    padding: 16px 20px;
    margin-bottom: 20px;
    border: 2px solid var(--border-color);
    border-radius: 12px;
    font-size: 1rem;
    color: var(--text-primary);
    background: var(--background-white);
    transition: var(--transition);
    font-family: inherit;
}

.input-field:focus {
    border-color: var(--primary-color);
    outline: none;
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
    transform: translateY(-1px);
}

.input-field:hover {
    border-color: var(--primary-color);
}

label {
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
    color: var(--text-primary);
    text-align: left;
    font-size: 0.95rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.submit-btn {
    width: 100%;
    padding: 16px 24px;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    border: none;
    border-radius: 12px;
    color: white;
    font-size: 1rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    cursor: pointer;
    transition: var(--transition);
    margin: 16px 0 24px 0;
    box-shadow: var(--shadow-md);
}

.submit-btn:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

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

.register-link {
    margin-top: 24px;
    padding-top: 24px;
    border-top: 1px solid var(--border-color);
}

.register-link p {
    margin: 0;
    color: var(--text-secondary);
    font-size: 0.95rem;
}

.register-link a {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 600;
    transition: var(--transition);
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.register-link a:hover {
    text-decoration: underline;
    transform: translateY(-1px);
}

/* Error and success messages */
form div {
    margin-bottom: 20px;
    padding: 12px 16px;
    border-radius: 8px;
    font-weight: 500;
    text-align: center;
    background: linear-gradient(135deg, #fed7d7, #feb2b2);
    color: #c53030;
    border: 1px solid #f56565;
}

form div i {
    font-style: normal;
    display: block;
}

/* Responsive Design */
@media (max-width: 768px) {
    body {
        padding: 10px;
    }

    .login-container {
        padding: 32px 24px;
        max-width: 100%;
    }

    h2 {
        font-size: 2rem;
        margin-bottom: 24px;
    }

    .input-field {
        padding: 14px 16px;
        font-size: 1rem;
    }

    .submit-btn {
        padding: 14px 20px;
        font-size: 0.95rem;
    }
}

@media (max-width: 480px) {
    .login-container {
        padding: 24px 20px;
        border-radius: 8px;
    }

    h2 {
        font-size: 1.75rem;
    }

    .input-field {
        padding: 12px 14px;
        border-radius: 8px;
    }

    .submit-btn {
        padding: 12px 18px;
        border-radius: 8px;
    }
}