:root {
    --primary-color: #4f46e5;
    --primary-hover: #4338ca;
    --secondary-color: #f0f4f8;
    --accent-color: #7c3aed;
    --text-color: #1f2937;
    --text-light: #6b7280;
    --background-color: #ffffff;
    --card-background: #f9fafb;
    --border-color: #e5e7eb;
    --error-color: #ef4444;
    --success-color: #10b981;
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --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);
    --border-radius: 8px;
    --transition: all 0.3s ease;
}

body {
    font-family: 'Inter', sans-serif;
    background: linear-gradient(135deg, #f0f4ff 0%, #dbeafe 100%);
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0;
    padding: 20px;
}

.auth-container {
    width: 100%;
    max-width: 420px;
}

.auth-card {
    background-color: white;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-lg);
    overflow: hidden;
    padding: 2rem;
}

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

.auth-header h1 {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 1rem;
    display: flex;
    align-items: center;
    justify-content: center;
}

.auth-header h1 i {
    margin-right: 0.5rem;
}

.auth-header h2 {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: var(--text-color);
}

.auth-header p {
    color: var(--text-light);
    font-size: 0.9rem;
}

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

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
    color: var(--text-color);
}

.input-with-icon {
    position: relative;
}

.input-with-icon i {
    position: absolute;
    left: 1rem;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-light);
}

.input-with-icon input {
    padding-left: 2.5rem;
}

input {
    width: 100%;
    padding: 0.75rem 1rem;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    font-size: 1rem;
    transition: var(--transition);
}

input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.2);
}

.btn-primary {
    display: block;
    width: 100%;
    padding: 0.875rem;
    background-color: var(--primary-color);
    color: white;
    border: none;
    border-radius: var(--border-radius);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    text-align: center;
}

.btn-primary:hover {
    background-color: var(--primary-hover);
}

.auth-links {
    margin-top: 1.5rem;
    text-align: center;
    font-size: 0.9rem;
    color: var(--text-light);
}

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

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

.error-message {
    background-color: #fef2f2;
    color: var(--error-color);
    border: 1px solid #fee2e2;
    border-radius: var(--border-radius);
    padding: 0.75rem;
    margin-bottom: 1.5rem;
    font-size: 0.875rem;
}

.success-message {
    background-color: #ecfdf5;
    color: var(--success-color);
    border: 1px solid #d1fae5;
    border-radius: var(--border-radius);
    padding: 0.75rem;
    margin-bottom: 1.5rem;
    font-size: 0.875rem;
    text-align: center;
}

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

body {
    min-height: 100vh;
    padding: 2rem 1.25rem;
    background:
        radial-gradient(ellipse at 10% 10%, rgba(37, 99, 235, 0.12), transparent 32%),
        radial-gradient(ellipse at 95% 90%, rgba(15, 159, 145, 0.09), transparent 30%),
        var(--background-color);
}

.auth-container {
    width: min(100%, 440px);
    max-width: 440px;
    margin: auto;
}

.auth-card {
    padding: clamp(1.6rem, 6vw, 2.4rem);
    border: 1px solid var(--border-color);
    border-radius: 18px;
    background: var(--card-background);
    box-shadow: var(--shadow-lg);
}

.auth-header {
    margin-bottom: 1.7rem;
}

.auth-header h1 {
    gap: 0.5rem;
    margin-bottom: 1.7rem;
    color: var(--text-color);
    font-size: 1.1rem;
    letter-spacing: -0.04em;
}

.auth-header h1 i {
    color: var(--primary-color);
}

.auth-header h2 {
    margin-bottom: 0.45rem;
    color: var(--text-color);
    font-size: 1.65rem;
    letter-spacing: -0.045em;
}

.auth-header p {
    color: var(--text-light);
    line-height: 1.6;
}

.form-group {
    margin-bottom: 1.15rem;
}

.form-group label {
    margin-bottom: 0.45rem;
    color: var(--text-color);
    font-size: 0.88rem;
    font-weight: 600;
}

.input-with-icon input,
.form-group > input {
    min-height: 46px;
    border: 1px solid var(--border-color);
    border-radius: 9px;
    background: var(--background-color);
    color: var(--text-color);
    font-family: 'Inter', sans-serif;
    font-size: 0.92rem;
}

.input-with-icon i {
    color: var(--text-light);
}

.input-with-icon input:focus,
.form-group > input:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.14);
}

.auth-card .btn-primary {
    min-height: 47px;
    border: 0;
    border-radius: 9px;
    background: var(--primary-color);
    box-shadow: 0 7px 18px rgba(37, 99, 235, 0.18);
}

.auth-card .btn-primary:hover {
    background: var(--primary-hover);
}

.auth-links {
    color: var(--text-light);
    line-height: 1.6;
}

.auth-links a {
    color: var(--primary-color);
}

.or-divider {
    margin: 1.25rem 0;
}

.auth-card .btn-secondary {
    border: 1px solid var(--border-color);
    border-radius: 9px;
    background: var(--card-background);
    color: var(--text-color);
}

.auth-card .btn-secondary:hover {
    border-color: var(--primary-color);
    background: var(--secondary-color);
}

.error-message,
.success-message {
    border-radius: 9px;
}

.dark-theme .input-with-icon input,
.dark-theme .form-group > input {
    background: #0b1626;
    color: var(--text-color);
}

@media (max-width: 480px) {
    body {
        padding: 1rem;
    }
}