:root {
    --primary-color: #2563eb;
    --primary-dark: #1d4ed8;
    --error-color: #dc2626;
    --success-color: #16a34a;
    --warning-color: #d97706;
    --text-primary: #1f2937;
    --text-secondary: #6b7280;
    --bg-color: #f8fafc;
    --card-bg: #ffffff;
    --border-color: #e5e7eb;
    --shadow:
        0 10px 25px -5px rgba(0, 0, 0, 0.1),
        0 10px 10px -5px rgba(0, 0, 0, 0.04);
}

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

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

.container {
    display: flex;
    max-width: 1200px;
    width: 100%;
    gap: 30px;
}

.auth-card {
    background: var(--card-bg);
    border-radius: 20px;
    padding: 40px;
    box-shadow: var(--shadow);
    flex: 1;
    max-width: 500px;
}

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

.logo {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    margin-bottom: 8px;
}

.logo i {
    font-size: 32px;
    color: var(--primary-color);
}

.logo h1 {
    font-size: 28px;
    font-weight: 700;
    color: var(--text-primary);
}

.subtitle {
    color: var(--text-secondary);
    font-size: 14px;
    letter-spacing: 0.5px;
}

.alert {
    background: linear-gradient(135deg, #fef3c7 0%, #fde68a 100%);
    border-left: 4px solid var(--warning-color);
    padding: 16px;
    border-radius: 8px;
    margin-bottom: 30px;
    display: flex;
    align-items: center;
    gap: 12px;
    color: #92400e;
}

.alert i {
    font-size: 20px;
}

.auth-form {
    margin-bottom: 25px;
}

.form-group {
    margin-bottom: 24px;
}

.form-group label {
    display: flex;
    align-items: center;
    gap: 8px;
    font-weight: 500;
    margin-bottom: 8px;
    color: var(--text-primary);
}

.form-group label i {
    color: var(--text-secondary);
    width: 16px;
}

.form-group input {
    width: 100%;
    padding: 14px 16px;
    border: 2px solid var(--border-color);
    border-radius: 10px;
    font-size: 16px;
    transition: all 0.3s ease;
    background: #f9fafb;
}

.form-group input:focus {
    outline: none;
    border-color: var(--primary-color);
    background: white;
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.input-hint {
    font-size: 12px;
    color: var(--text-secondary);
    margin-top: 6px;
    display: flex;
    align-items: center;
    gap: 4px;
}

.checkbox-group {
    display: flex;
    align-items: center;
    gap: 10px;
}

.checkbox-group input[type="checkbox"] {
    width: 18px;
    height: 18px;
    accent-color: var(--primary-color);
}

.login-btn {
    width: 100%;
    padding: 16px;
    background: linear-gradient(
        135deg,
        var(--primary-color) 0%,
        var(--primary-dark) 100%
    );
    color: white;
    border: none;
    border-radius: 10px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.login-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 20px rgba(37, 99, 235, 0.2);
}

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

.spinner {
    width: 20px;
    height: 20px;
    border: 3px solid rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    border-top-color: white;
    animation: spin 1s ease-in-out infinite;
}

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}

.links {
    display: flex;
    justify-content: space-between;
    margin-top: 20px;
}

.link {
    color: var(--primary-color);
    text-decoration: none;
    font-size: 14px;
    display: flex;
    align-items: center;
    gap: 6px;
    transition: color 0.3s ease;
}

.link:hover {
    color: var(--primary-dark);
    text-decoration: underline;
}

.error-message {
    background: linear-gradient(135deg, #fee2e2 0%, #fecaca 100%);
    border-left: 4px solid var(--error-color);
    padding: 16px;
    border-radius: 8px;
    margin-bottom: 25px;
    display: flex;
    align-items: flex-start;
    gap: 12px;
    color: #991b1b;
}

.error-message i {
    font-size: 20px;
    margin-top: 2px;
}

.error-message strong {
    display: block;
    margin-bottom: 4px;
}

.error-message p {
    font-size: 14px;
    opacity: 0.9;
}

.close-btn {
    background: none;
    border: none;
    font-size: 24px;
    color: var(--error-color);
    cursor: pointer;
    padding: 0 4px;
    margin-left: auto;
}

.footer {
    border-top: 1px solid var(--border-color);
    padding-top: 20px;
    margin-top: 30px;
}

.security-info {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    color: var(--success-color);
    font-size: 14px;
    margin-bottom: 10px;
}

.version {
    text-align: center;
    font-size: 12px;
    color: var(--text-secondary);
}

.version a {
    color: var(--text-secondary);
    text-decoration: none;
}

.version a:hover {
    text-decoration: underline;
}

.sidebar {
    flex: 1;
    max-width: 350px;
    background: var(--card-bg);
    border-radius: 20px;
    padding: 30px;
    box-shadow: var(--shadow);
}

.sidebar-content h2 {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 25px;
    color: var(--text-primary);
}

.info-item {
    display: flex;
    align-items: center;
    gap: 15px;
    padding: 15px;
    background: #f8fafc;
    border-radius: 10px;
    margin-bottom: 15px;
}

.info-item i {
    font-size: 24px;
    color: var(--primary-color);
}

.info-label {
    font-size: 12px;
    color: var(--text-secondary);
    margin-bottom: 4px;
}

.info-value {
    font-weight: 600;
    font-size: 16px;
}

.info-value.online {
    color: var(--success-color);
}

.info-value.high {
    color: var(--warning-color);
}

.tips {
    margin-top: 30px;
    padding-top: 20px;
    border-top: 1px solid var(--border-color);
}

.tips h3 {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 15px;
    color: var(--text-primary);
}

.tips ul {
    list-style: none;
    padding-left: 0;
}

.tips li {
    padding: 8px 0;
    padding-left: 28px;
    position: relative;
    color: var(--text-secondary);
    font-size: 14px;
}

.tips li:before {
    content: "✓";
    position: absolute;
    left: 0;
    color: var(--success-color);
    font-weight: bold;
}

.hidden {
    display: none !important;
}

/* Анимации */
@keyframes shake {
    0%,
    100% {
        transform: translateX(0);
    }
    10%,
    30%,
    50%,
    70%,
    90% {
        transform: translateX(-5px);
    }
    20%,
    40%,
    60%,
    80% {
        transform: translateX(5px);
    }
}

.shake {
    animation: shake 0.5s ease-in-out;
}

/* Адаптивность */
@media (max-width: 768px) {
    .container {
        flex-direction: column;
    }

    .auth-card,
    .sidebar {
        max-width: 100%;
    }

    .links {
        flex-direction: column;
        gap: 10px;
        align-items: center;
    }
}

/* Эффект при фокусе */
.form-group input:invalid {
    border-color: var(--error-color);
}

/* Стили для загрузки */
.loading {
    opacity: 0.7;
    cursor: not-allowed;
}