.auth-page {
    min-height: 100vh;
    background: linear-gradient(135deg, #EEF2FF 0%, #E0E7FF 50%, #C7D2FE 100%);
    /*position: relative;*/
}

.auth-page::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%236366f1' fill-opacity='0.03'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
}

.auth-section {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: calc(100vh - 72px);
    padding: 120px 24px 60px;
    position: relative;
}

.auth-container {
    width: 100%;
    max-width: 480px;
}

.auth-container-register {
    max-width: 900px;
}

.auth-card {
    background-color: var(--surface-color);
    border-radius: var(--radius-2xl);
    box-shadow: var(--shadow-2xl), var(--shadow-glow);
    padding: 48px;
    position: relative;
    overflow: hidden;
}

.auth-card-register {
    padding: 42px 44px;
}

.auth-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--primary-gradient);
}

.auth-tabs {
    display: flex;
    gap: 8px;
    margin-bottom: 36px;
    padding: 6px;
    background-color: var(--background-color);
    border-radius: var(--radius-lg);
}

.auth-tab {
    flex: 1;
    padding: 14px 24px;
    font-size: 14px;
    font-weight: 600;
    color: var(--text-secondary);
    background: none;
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-fast);
}

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

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

.auth-form {
    display: none;
}

.auth-form.active {
    display: block;
}

.auth-form h2 {
    font-size: 28px;
    font-weight: 800;
    margin-bottom: 8px;
    text-align: center;
    letter-spacing: -0.02em;
}

.auth-subtitle {
    font-size: 15px;
    color: var(--text-secondary);
    text-align: center;
    margin-bottom: 36px;
}

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

.form-group label {
    display: block;
    font-size: 14px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 8px;
}

.form-group input[type="text"],
.form-group input[type="email"],
.form-group input[type="password"],
.form-group input[type="tel"],
.form-group input[type="url"],
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 14px 18px;
    font-size: 15px;
    font-family: inherit;
    border: 2px solid var(--border-color);
    border-radius: var(--radius-lg);
    background-color: var(--surface-color);
    transition: all var(--transition-fast);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 4px rgba(99, 102, 241, 0.1);
}

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

.form-help,
.form-hint {
    display: block;
    font-size: 13px;
    color: var(--text-light);
    margin-top: 8px;
}

.register-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 18px;
    margin-bottom: 24px;
}

.register-grid .full-width {
    grid-column: 1 / -1;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}

.form-options {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 28px;
}

.form-options.full-width {
    margin-bottom: 0;
}

.checkbox-label {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    font-size: 14px;
    color: var(--text-secondary);
    cursor: pointer;
}

.checkbox-label input[type="checkbox"] {
    width: 20px;
    height: 20px;
    margin-top: 2px;
    accent-color: var(--primary-color);
    border-radius: var(--radius-sm);
}

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

.checkbox-label a:hover {
    text-decoration: underline;
}

.forgot-link {
    font-size: 14px;
    font-weight: 500;
    color: var(--primary-color);
    text-decoration: none;
}

.forgot-link:hover {
    text-decoration: underline;
}

.auth-divider {
    display: flex;
    align-items: center;
    margin: 28px 0;
}

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

.auth-divider span {
    padding: 0 20px;
    font-size: 13px;
    font-weight: 500;
    color: var(--text-light);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.social-login {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 14px;
}

.social-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    padding: 14px 20px;
    font-size: 14px;
    font-weight: 600;
    font-family: inherit;
    background-color: var(--surface-color);
    border: 2px solid var(--border-color);
    border-radius: var(--radius-lg);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.social-btn:hover {
    background-color: var(--background-color);
    border-color: var(--text-light);
}

.social-btn.google {
    color: var(--text-primary);
}

.social-btn.github {
    color: var(--text-primary);
}

.social-btn svg {
    width: 20px;
    height: 20px;
}

.password-toggle {
    position: relative;
}

.password-toggle input {
    padding-right: 48px;
}

.password-toggle-btn {
    position: absolute;
    right: 16px;
    top: 50%;
    transform: translateY(-50%);
    background: none;
    border: none;
    color: var(--text-light);
    cursor: pointer;
    padding: 4px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.password-toggle-btn:hover {
    color: var(--text-secondary);
}

.field-error {
    display: none;
    margin-top: 6px;
    font-size: 12px;
    color: #dc2626;
    font-weight: 500;
}

.form-group.has-error input,
.form-group.has-error select,
.form-group.has-error textarea {
    border-color: #dc2626;
    box-shadow: 0 0 0 3px rgba(220, 38, 38, 0.12);
}

.form-group.has-error .checkbox-label input[type="checkbox"],
.form-options.has-error .checkbox-label input[type="checkbox"] {
    outline: 2px solid #dc2626;
    outline-offset: 2px;
}

.form-group.has-success input,
.form-group.has-success select,
.form-group.has-success textarea {
    border-color: #16a34a;
}

@media (max-width: 576px) {
    .auth-card {
        padding: 32px 24px;
    }

    .auth-card-register {
        padding: 32px 22px;
    }

    .form-row {
        grid-template-columns: 1fr;
    }

    .social-login {
        grid-template-columns: 1fr;
    }

    .form-options {
        flex-direction: column;
        align-items: flex-start;
        gap: 10px;
    }

    .auth-form h2 {
        font-size: 24px;
    }
}

/* ================================================================
   Register page – standalone two-column card
   ================================================================ */
.reg-container {
    width: 100%;
    max-width: 840px;
    margin: 0 auto;
}

.reg-card {
    background-color: var(--surface-color);
    border-radius: var(--radius-2xl);
    box-shadow: var(--shadow-2xl), var(--shadow-glow);
    padding: 40px 48px;
    position: relative;
    overflow: hidden;
}

.reg-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--primary-gradient);
}

.reg-title {
    font-size: 28px;
    font-weight: 800;
    text-align: center;
    margin-bottom: 8px;
    letter-spacing: -0.02em;
}

.reg-server-errors p {
    margin: 2px 0;
    font-size: 14px;
}

/* Two-column flex layout */
.reg-grid {
    display: flex;
    flex-wrap: wrap;
    gap: 16px 20px;
    margin-bottom: 24px;
}

.reg-grid > .form-group {
    flex: 0 0 calc(50% - 10px);
    min-width: 0;
    box-sizing: border-box;
    margin-bottom: 0;
}

.reg-grid > .reg-span2 {
    flex: 0 0 100%;
    min-width: 0;
    box-sizing: border-box;
    margin-bottom: 0;
}

.req-star {
    color: #dc2626;
    margin-left: 2px;
    font-size: 11px;
    vertical-align: super;
}

/* Inline validation messages – hidden until form.was-validated */
.field-msg {
    display: none;
    margin-top: 5px;
    font-size: 12px;
    color: #dc2626;
    font-weight: 500;
}

/* Red/green borders on submit attempt */
#registerForm.was-validated input:invalid,
#registerForm.was-validated select:invalid {
    border-color: #dc2626 !important;
    box-shadow: 0 0 0 3px rgba(220, 38, 38, 0.12) !important;
}

#registerForm.was-validated input:valid,
#registerForm.was-validated select:valid {
    border-color: #16a34a !important;
    box-shadow: none !important;
}

#registerForm.was-validated input[type="checkbox"]:valid,
#registerForm.was-validated input[type="checkbox"]:invalid {
    box-shadow: none !important;
}

/* Show field-msg when sibling input is invalid */
#registerForm.was-validated input:invalid ~ .field-msg,
#registerForm.was-validated select:invalid ~ .field-msg {
    display: block;
}

#registerForm.was-validated input:valid ~ .field-msg,
#registerForm.was-validated select:valid ~ .field-msg {
    display: none;
}

/* Terms checkbox row */
.reg-terms-group {
    display: flex;
    align-items: flex-start;
    flex-wrap: wrap;
    gap: 8px;
    margin-top: 4px;
    border: none;
    padding: 0;
}

.reg-terms-group input[type="checkbox"] {
    width: 18px;
    height: 18px;
    margin-top: 3px;
    flex-shrink: 0;
    accent-color: var(--primary-color);
    cursor: pointer;
}

.terms-label {
    flex: 1;
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.5;
    cursor: pointer;
}

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

.terms-label a:hover {
    text-decoration: underline;
}

.terms-field-msg {
    width: 100%;
    flex-basis: 100%;
    margin-top: 0;
}

#registerForm.was-validated input[type="checkbox"]:invalid ~ .terms-label {
    color: #dc2626;
}

#registerForm.was-validated input[type="checkbox"]:invalid ~ .terms-field-msg {
    display: block;
}

#registerForm.was-validated input[type="checkbox"]:valid ~ .terms-field-msg {
    display: none;
}

@media (max-width: 640px) {
    .reg-grid > .form-group {
        flex: 0 0 100%;
    }

    .reg-card {
        padding: 28px 20px;
    }
}