/* static/css/auth_style.css */

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

:root {
    --primary-color: #0D47A1; /* 深邃的科研蓝 */
    --primary-light-color: #42A5F5; /* 亮蓝色，用于交互 */
    --bg-color: #F7F9FC; /* 非常浅的蓝灰色背景 */
    --card-bg-color: #FFFFFF;
    --text-color: #37474F; /* 深灰色文字 */
    --text-light-color: #78909C; /* 浅灰色文字 */
    --border-color: #CFD8DC;
    --error-color: #D32F2F;
    --success-color: #388E3C;
    --shadow: 0 4px 15px rgba(0, 0, 0, 0.08);
}

body {
    font-family: 'Inter', sans-serif;
    background-color: var(--bg-color);
    margin: 0;
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    color: var(--text-color);
    line-height: 1.6;
}

.auth-container {
    background-color: var(--card-bg-color);
    padding: 40px 50px;
    border-radius: 12px;
    box-shadow: var(--shadow);
    width: 100%;
    max-width: 480px;
    box-sizing: border-box;
    border-top: 5px solid var(--primary-color);
    animation: fadeIn 0.5s ease-in-out;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(-10px); }
    to { opacity: 1; transform: translateY(0); }
}

.auth-header {
    text-align: center;
    margin-bottom: 30px;
}

.auth-header .logo {
    font-size: 28px;
    font-weight: 700;
    color: var(--primary-color);
    letter-spacing: -1px;
}

.auth-header .logo span {
    font-weight: 400;
    color: var(--primary-light-color);
}

.auth-header p {
    color: var(--text-light-color);
    margin-top: 8px;
    font-size: 16px;
}

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

.form-group label {
    display: block;
    font-weight: 500;
    margin-bottom: 8px;
    font-size: 14px;
    color: var(--text-color);
}

.form-group input {
    width: 100%;
    padding: 12px 15px;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    font-size: 16px;
    box-sizing: border-box;
    transition: all 0.2s ease;
}

.form-group input:focus {
    outline: none;
    border-color: var(--primary-light-color);
    box-shadow: 0 0 0 3px rgba(66, 165, 245, 0.2);
}

.btn-primary {
    width: 100%;
    padding: 14px;
    background-image: linear-gradient(to right, var(--primary-light-color), var(--primary-color));
    color: white;
    border: none;
    border-radius: 8px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    letter-spacing: 0.5px;
    text-transform: uppercase;
}

.btn-primary:hover {
    box-shadow: 0 6px 20px rgba(13, 71, 161, 0.3);
    transform: translateY(-2px);
}

.auth-footer {
    text-align: center;
    margin-top: 25px;
    font-size: 14px;
    color: var(--text-light-color);
}

.auth-footer a {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.2s;
}

.auth-footer a:hover {
    color: var(--primary-light-color);
    text-decoration: underline;
}

/* Flash Messages Styling */
.flash-messages {
    list-style-type: none;
    padding: 0;
    margin: 0 0 20px 0;
}

.flash-messages li {
    padding: 12px 15px;
    border-radius: 8px;
    margin-bottom: 10px;
    font-size: 14px;
    text-align: center;
}

.flash-messages .danger {
    background-color: #FFEBEE;
    color: var(--error-color);
    border: 1px solid #FFCDD2;
}

.flash-messages .success {
    background-color: #E8F5E9;
    color: var(--success-color);
    border: 1px solid #C8E6C9;
}

.flash-messages .info {
    background-color: #E3F2FD;
    color: #1976D2;
    border: 1px solid #BBDEFB;
}