:root {
    --primary-color: #5e72e4;
    --primary-hover: #4a5cd4;
    --primary-light: #eef1fd;
    --accent-color: #54aff9;
    --accent-hover: #3d9fe9;
    --background: #f8f9fe;
    --card-bg: #ffffff;
    --text-primary: #515a6e;
    --text-secondary: #8898aa;
    --text-light: #adb5bd;
    --border-color: #e9ecef;
    --success-color: #2dce89;
    --warning-color: #fb6340;
    --error-color: #f5365c;
    --shadow-sm: 0 2px 4px rgba(50, 50, 93, 0.1);
    --shadow-md: 0 4px 20px rgba(50, 50, 93, 0.1), 0 2px 8px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 40px rgba(50, 50, 93, 0.15), 0 4px 16px rgba(0, 0, 0, 0.08);
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}


.auth-modern-page {
    min-height: 100vh;
    background: var(--background);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
    position: relative;
    overflow: hidden;
}


.auth-modern-page::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -20%;
    width: 80%;
    height: 150%;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--accent-color) 100%);
    border-radius: 50%;
    opacity: 0.06;
    transform: rotate(-12deg);
    z-index: 0;
}

.auth-modern-page::after {
    content: '';
    position: absolute;
    bottom: -30%;
    left: -20%;
    width: 60%;
    height: 100%;
    background: linear-gradient(45deg, var(--accent-color) 0%, var(--primary-color) 100%);
    border-radius: 50%;
    opacity: 0.04;
    transform: rotate(15deg);
    z-index: 0;
}


.auth-card-wrapper {
    width: 100%;
    max-width: 420px;
    position: relative;
    z-index: 1;
}

.auth-card-wrapper.register-card {
    max-width: 520px;
}



.auth-card {
    background: var(--card-bg);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    overflow: hidden;
    animation: slideUp 0.5s ease-out;
}

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}


.auth-card-header {
    background: linear-gradient(135deg, var(--primary-color) 0%, #7c8ce8 100%);
    padding: 28px 32px 36px;
    text-align: center;
    position: relative;
}

.auth-card-header::after {
    content: '';
    position: absolute;
    bottom: -16px;
    left: 0;
    right: 0;
    height: 32px;
    background: var(--card-bg);
    border-radius: 50% 50% 0 0 / 100% 100% 0 0;
}

.auth-logo-wrapper {
    width: 80px;
    height: 80px;
    margin: 0 auto 16px;
    background: var(--card-bg);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-md);
    position: relative;
    z-index: 1;
}

.auth-logo-wrapper img {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    object-fit: cover;
}


.auth-icon-wrapper {
    width: 72px;
    height: 72px;
    margin: 0 auto 16px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    z-index: 1;
    border: 2px solid rgba(255, 255, 255, 0.3);
}

.auth-icon-wrapper i.icon {
    font-size: 36px;
    color: #ffffff;
}

.auth-card-title {
    color: #ffffff;
    font-size: 24px;
    font-weight: 600;
    margin: 0 0 8px;
    position: relative;
    z-index: 1;
}

.auth-card-subtitle {
    color: rgba(255, 255, 255, 0.85);
    font-size: 14px;
    margin: 0;
    position: relative;
    z-index: 1;
}


.auth-card-body {
    padding: 24px 32px 32px;
}


.auth-nav-tabs {
    display: flex;
    margin-bottom: 24px;
    background: var(--primary-light);
    border-radius: var(--radius-md);
    padding: 4px;
}

.auth-nav-tab {
    flex: 1;
    padding: 12px 16px;
    text-align: center;
    color: var(--text-secondary);
    font-size: 14px;
    font-weight: 500;
    text-decoration: none;
    border-radius: var(--radius-sm);
    transition: var(--transition);
}

.auth-nav-tab:hover {
    color: var(--primary-color);
    text-decoration: none;
}

.auth-nav-tab.active {
    background: var(--card-bg);
    color: var(--primary-color);
    box-shadow: var(--shadow-sm);
}


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

.auth-form-label {
    display: block;
    font-size: 13px;
    font-weight: 500;
    color: var(--text-primary);
    margin-bottom: 8px;
}

.auth-form-input {
    width: 100%;
    padding: 14px 16px;
    font-size: 15px;
    color: var(--text-primary);
    background: var(--background);
    border: 2px solid transparent;
    border-radius: var(--radius-md);
    outline: none;
    transition: var(--transition);
}

.auth-form-input:focus {
    background: var(--card-bg);
    border-color: var(--primary-color);
    box-shadow: 0 0 0 4px rgba(94, 114, 228, 0.1);
}

.auth-form-input::placeholder {
    color: var(--text-light);
}


.auth-input-wrapper {
    position: relative;
}

.auth-input-wrapper .auth-form-input {
    padding-left: 46px;
}

.auth-input-icon {
    position: absolute;
    left: 16px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-light);
    font-size: 20px;
    transition: var(--transition);
}

.auth-input-wrapper .auth-form-input:focus + .auth-input-icon,
.auth-input-wrapper .auth-form-input:not(:placeholder-shown) + .auth-input-icon {
    color: var(--primary-color);
}


.auth-password-toggle {
    position: absolute;
    right: 16px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-light);
    cursor: pointer;
    transition: var(--transition);
    background: none;
    border: none;
    padding: 0;
}

.auth-password-toggle:hover {
    color: var(--text-primary);
}


.auth-form-input.is-valid {
    border-color: var(--success-color);
}

.auth-form-input.is-invalid {
    border-color: var(--error-color);
}

.auth-form-feedback {
    font-size: 12px;
    margin-top: 6px;
}

.auth-form-feedback.success {
    color: var(--success-color);
}

.auth-form-feedback.error {
    color: var(--error-color);
}


.password-strength {
    margin-top: 8px;
}

.password-strength-bar {
    height: 4px;
    background: var(--border-color);
    border-radius: 2px;
    overflow: hidden;
    margin-bottom: 6px;
}

.password-strength-fill {
    height: 100%;
    border-radius: 2px;
    transition: var(--transition);
}

.password-strength-fill.weak { width: 25%; background: var(--error-color); }
.password-strength-fill.fair { width: 50%; background: var(--warning-color); }
.password-strength-fill.good { width: 75%; background: #ffc107; }
.password-strength-fill.strong { width: 100%; background: var(--success-color); }

.password-strength-text {
    font-size: 12px;
    color: var(--text-secondary);
}


.auth-checkbox-wrapper {
    display: flex;
    align-items: center;
    gap: 10px;
    cursor: pointer;
}

.auth-checkbox {
    width: 18px;
    height: 18px;
    border: 2px solid var(--border-color);
    border-radius: 4px;
    appearance: none;
    cursor: pointer;
    transition: var(--transition);
    position: relative;
}

.auth-checkbox:checked {
    background: var(--primary-color);
    border-color: var(--primary-color);
}

.auth-checkbox:checked::after {
    content: '';
    position: absolute;
    left: 5px;
    top: 2px;
    width: 4px;
    height: 8px;
    border: solid white;
    border-width: 0 2px 2px 0;
    transform: rotate(45deg);
}

.auth-checkbox-label {
    font-size: 14px;
    color: var(--text-secondary);
}


.auth-btn-primary {
    width: 100%;
    padding: 14px 24px;
    font-size: 15px;
    font-weight: 600;
    color: #ffffff;
    background: linear-gradient(135deg, var(--primary-color) 0%, #7c8ce8 100%);
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.auth-btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(94, 114, 228, 0.35);
}

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

.auth-btn-primary:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none;
    box-shadow: none;
}


.auth-btn-secondary {
    width: 100%;
    padding: 14px 24px;
    font-size: 15px;
    font-weight: 500;
    color: var(--text-primary);
    background: var(--background);
    border: 2px solid var(--border-color);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: var(--transition);
}

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


.auth-btn-code {
    padding: 14px 20px;
    font-size: 14px;
    font-weight: 500;
    color: var(--primary-color);
    background: var(--primary-light);
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: var(--transition);
    white-space: nowrap;
}

.auth-btn-code:hover:not(:disabled) {
    background: var(--primary-color);
    color: #ffffff;
}

.auth-btn-code:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}


.auth-helper-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 24px;
}

.auth-link {
    font-size: 14px;
    color: var(--primary-color);
    text-decoration: none;
    transition: var(--transition);
}

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


.auth-divider {
    display: flex;
    align-items: center;
    margin: 24px 0;
}

.auth-divider::before,
.auth-divider::after {
    content: '';
    flex: 1;
    height: 1px;
    background: var(--border-color);
}

.auth-divider-text {
    padding: 0 16px;
    font-size: 13px;
    color: var(--text-light);
}


.auth-social-buttons {
    display: flex;
    gap: 12px;
    margin-top: 16px;
}

.auth-social-btn {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 16px;
    font-size: 14px;
    font-weight: 500;
    color: var(--text-primary);
    background: var(--card-bg);
    border: 2px solid var(--border-color);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: var(--transition);
    text-decoration: none;
}

.auth-social-btn:hover {
    border-color: var(--primary-color);
    color: var(--primary-color);
    transform: translateY(-2px);
    box-shadow: var(--shadow-sm);
    text-decoration: none;
}

.auth-social-btn i {
    font-size: 20px;
}


.auth-social-btn.passkey-btn {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-color: transparent;
    color: #ffffff;
}

.auth-social-btn.passkey-btn:hover {
    border-color: transparent;
    color: #ffffff;
    box-shadow: 0 4px 16px rgba(102, 126, 234, 0.4);
}


.auth-social-btn.telegram-btn {
    background: linear-gradient(135deg, #0088cc 0%, #00aced 100%);
    border-color: transparent;
    color: #ffffff;
}

.auth-social-btn.telegram-btn:hover {
    border-color: transparent;
    color: #ffffff;
    box-shadow: 0 4px 16px rgba(0, 136, 204, 0.4);
}


.auth-card-footer {
    padding: 20px 32px;
    background: var(--background);
    text-align: center;
    border-top: 1px solid var(--border-color);
}

.auth-footer-text {
    font-size: 13px;
    color: var(--text-secondary);
    margin: 0;
    line-height: 1.6;
}

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

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


.auth-captcha-wrapper {
    margin: 20px 0;
    display: flex;
    justify-content: center;
}

.auth-captcha-wrapper > div {
    transform-origin: center;
}


.auth-captcha-wrapper.altcha-wrapper,
.auth-captcha-wrapper:has(altcha-widget) {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 16px;
    background: linear-gradient(135deg, var(--primary-light) 0%, #f0f4ff 100%);
    border: 2px solid var(--border-color);
    border-radius: var(--radius-md);
    position: relative;
    overflow: hidden;
}


.auth-captcha-wrapper.altcha-wrapper::before,
.auth-captcha-wrapper:has(altcha-widget)::before {
    content: 'verified_user';
    font-family: 'Material Icons';
    font-size: 32px;
    color: var(--primary-color);
    opacity: 0.8;
    flex-shrink: 0;
}


.auth-captcha-wrapper.altcha-wrapper::after,
.auth-captcha-wrapper:has(altcha-widget)::after {
    content: '';
    position: absolute;
    right: -20px;
    top: -20px;
    width: 80px;
    height: 80px;
    background: var(--primary-color);
    opacity: 0.05;
    border-radius: 50%;
}


.auth-captcha-wrapper.altcha-verified,
.auth-captcha-wrapper:has(altcha-widget[data-state="verified"]) {
    border-color: var(--success-color);
    background: linear-gradient(135deg, #e8f5e9 0%, #f1f8e9 100%);
}

.auth-captcha-wrapper.altcha-verified::before,
.auth-captcha-wrapper:has(altcha-widget[data-state="verified"])::before {
    content: 'shield';
    color: var(--success-color);
}

.auth-captcha-wrapper.altcha-verified::after,
.auth-captcha-wrapper:has(altcha-widget[data-state="verified"])::after {
    background: var(--success-color);
}


.auth-captcha-wrapper.altcha-verifying,
.auth-captcha-wrapper:has(altcha-widget[data-state="verifying"]) {
    border-color: var(--primary-color);
}

.auth-captcha-wrapper.altcha-verifying::before,
.auth-captcha-wrapper:has(altcha-widget[data-state="verifying"])::before {
    content: 'hourglass_empty';
    animation: pulse 1s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 0.8; }
    50% { opacity: 0.4; }
}


altcha-widget {
    
    --altcha-max-width: 100%;

    
    --altcha-color-base: transparent;
    --altcha-color-text: var(--text-primary);
    --altcha-color-text-subtle: var(--text-secondary);
    --altcha-color-border: transparent;
    --altcha-color-border-focus: transparent;
    --altcha-color-footer-bg: transparent;

    
    --altcha-border-width: 0;
    --altcha-border-radius: 0;

    
    --altcha-checkbox-size: 24px;
    --altcha-color-checkbox-border: var(--primary-color);
    --altcha-color-checkbox-border-hover: var(--primary-hover);
    --altcha-color-checkbox-border-focus: var(--primary-color);

    display: block;
    width: 100%;
    font-family: inherit;
    flex: 1;
    min-width: 0;
}


altcha-widget[data-state="verifying"] {
    --altcha-color-checkbox-border: var(--primary-color);
}


altcha-widget[data-state="verified"] {
    --altcha-color-checkbox-border: var(--success-color);
}


.auth-info-box {
    padding: 12px 16px;
    background: var(--primary-light);
    border-radius: var(--radius-sm);
    margin-bottom: 20px;
}

.auth-info-box p {
    margin: 0;
    font-size: 13px;
    color: var(--text-secondary);
    line-height: 1.5;
}

.auth-info-box.warning {
    background: #fff3e0;
}

.auth-info-box.warning p {
    color: #e65100;
}


.invite-code-tips {
    margin-top: 8px;
}

.invite-code-tips p {
    margin: 4px 0;
    font-size: 12px;
    display: flex;
    align-items: center;
    gap: 6px;
}

.invite-code-tips .tip-success {
    color: var(--success-color);
}

.invite-code-tips .tip-warning {
    color: var(--warning-color);
}

.invite-code-tips .tip-info {
    color: var(--accent-color);
}


.auth-form-row {
    display: flex;
    gap: 16px;
}

.auth-form-row .auth-form-group {
    flex: 1;
}


.auth-code-row {
    display: flex;
    gap: 12px;
}

.auth-code-row .auth-form-input {
    flex: 1;
}


.auth-select-wrapper {
    position: relative;
}

.auth-form-select {
    width: 100%;
    padding: 14px 40px 14px 16px;
    font-size: 15px;
    color: var(--text-primary);
    background: var(--background);
    border: 2px solid transparent;
    border-radius: var(--radius-md);
    outline: none;
    cursor: pointer;
    appearance: none;
    transition: var(--transition);
}

.auth-form-select:focus {
    background: var(--card-bg);
    border-color: var(--primary-color);
    box-shadow: 0 0 0 4px rgba(94, 114, 228, 0.1);
}

.auth-select-arrow {
    position: absolute;
    right: 16px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-light);
    pointer-events: none;
}


@media screen and (max-width: 480px) {
    .auth-modern-page {
        padding: 16px;
        align-items: flex-start;
        padding-top: 40px;
    }

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

    .auth-card-header {
        padding: 24px 24px 32px;
    }

    .auth-card-body {
        padding: 20px 24px 24px;
    }

    .auth-card-footer {
        padding: 16px 24px;
    }

    .auth-form-row {
        flex-direction: column;
        gap: 0;
    }

    .auth-social-buttons {
        flex-direction: column;
    }

    .auth-logo-wrapper {
        width: 64px;
        height: 64px;
    }

    .auth-logo-wrapper img {
        width: 48px;
        height: 48px;
    }

    .auth-card-title {
        font-size: 20px;
    }
}


@keyframes shake {
    0%, 100% { transform: translateX(0); }
    25% { transform: translateX(-5px); }
    75% { transform: translateX(5px); }
}

.auth-form-input.shake {
    animation: shake 0.3s ease;
}


.auth-btn-primary.loading {
    pointer-events: none;
}

.auth-btn-primary.loading::after {
    content: '';
    width: 20px;
    height: 20px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-top-color: #ffffff;
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
    display: inline-block;
    margin-left: 8px;
    vertical-align: middle;
}

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


@media (prefers-color-scheme: dark) {
    
}