.auth-section {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 70vh;
    padding: 2rem 1rem;
}

.auth-card {
    max-width: 420px;
    width: 100%;
    background: var(--surface-elevated);
    border-radius: 1.5rem;
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--surface-border);
    padding: 2.5rem 2rem;
    text-align: right;
    color: var(--text-primary);
    backdrop-filter: blur(18px);
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.auth-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 30px 60px rgba(15, 23, 42, 0.35);
}

.auth-title {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 0.75rem;
    color: var(--text-primary);
}

.auth-subtitle {
    font-size: 0.95rem;
    color: var(--text-secondary);
    margin-bottom: 2rem;
    line-height: 1.8;
}

.auth-form .form-group {
    text-align: right;
    margin-bottom: 1.5rem;
}

.auth-form .form-label {
    display: block;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
}

.auth-form .form-control {
    width: 100%;
    border-radius: 0.9rem;
    border: 1px solid var(--input-border);
    padding: 0.85rem 1rem;
    background-color: var(--input-bg);
    transition: border-color 0.2s ease, box-shadow 0.2s ease, background-color 0.2s ease;
    font-size: 0.95rem;
    color: var(--text-primary);
    backdrop-filter: blur(12px);
}

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

.auth-form .form-control:focus {
    outline: none;
    border-color: var(--input-border-focus);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.15);
    background-color: var(--surface-card-hover);
}

.otp-inputs {
    display: flex;
    justify-content: center;
    gap: 0.75rem;
    margin: 0 auto 0.5rem;
    direction: ltr;
}

.otp-input {
    width: 3.1rem;
    height: 3.6rem;
    border-radius: 0.9rem;
    border: 1px solid var(--input-border);
    background-color: var(--input-bg);
    color: var(--text-primary);
    font-size: 1.35rem;
    font-weight: 700;
    text-align: center;
    transition: border-color 0.2s ease, box-shadow 0.2s ease, transform 0.2s ease;
}

.otp-input:focus {
    outline: none;
    border-color: var(--input-border-focus);
    box-shadow: 0 0 0 4px rgba(99, 102, 241, 0.2);
    transform: translateY(-2px);
}

.otp-input.is-filled {
    border-color: var(--primary-light);
    background: rgba(99, 102, 241, 0.08);
}

.auth-submit {
    width: 100%;
    border: none;
    border-radius: 0.9rem;
    background: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%);
    color: #fff;
    font-weight: 600;
    padding: 0.95rem 1.25rem;
    cursor: pointer;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
    box-shadow: 0 18px 35px rgba(99, 102, 241, 0.35);
}

.auth-submit:hover,
.auth-submit:focus {
    transform: translateY(-1px);
    box-shadow: 0 22px 40px rgba(99, 102, 241, 0.45);
}

.auth-hint {
    margin-top: 1.5rem;
    padding: 1.1rem;
    border-radius: 1rem;
    background: var(--surface-muted);
    color: var(--text-secondary);
    border: 1px solid var(--surface-border);
    text-align: right;
}

.auth-hint strong {
    color: var(--text-primary);
}

.auth-hint .masked-contact {
    direction: ltr;
    unicode-bidi: plaintext;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.35rem;
    padding: 0.25rem 0.7rem;
    border-radius: 999px;
    background: rgba(99, 102, 241, 0.12);
    box-shadow: inset 0 0 0 1px rgba(99, 102, 241, 0.18);
    font-weight: 700;
    letter-spacing: 0.08em;
    color: inherit;
}

.auth-hint .text-muted {
    margin-top: 0.5rem;
    font-size: 0.85rem;
    color: var(--text-tertiary);
}

.auth-actions {
    margin-top: 1rem;
    display: flex;
    justify-content: center;
    gap: 1rem;
    flex-wrap: wrap;
}

.auth-resend {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    flex-wrap: wrap;
    justify-content: center;
}

.auth-inline-form {
    display: inline-flex;
}

.link-button {
    border: none;
    background: transparent;
    color: var(--primary);
    font-weight: 600;
    cursor: pointer;
    padding: 0;
    position: relative;
    text-decoration: none;
}

.link-button::after {
    content: "";
    position: absolute;
    bottom: -2px;
    right: 0;
    left: auto;
    width: 100%;
    height: 2px;
    background: rgba(99, 102, 241, 0.3);
    transition: background 0.2s ease;
}

.link-button:hover::after,
.link-button:focus::after {
    background: var(--primary);
}

.link-button.is-disabled {
    color: var(--text-tertiary);
    cursor: not-allowed;
    pointer-events: none;
}

.link-button.is-disabled::after {
    background: transparent;
}

.auth-resend-timer {
    font-size: 0.85rem;
    color: var(--text-tertiary);
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    min-height: 1.25rem;
}

.auth-footnote {
    margin-top: 2.5rem;
    font-size: 0.8rem;
    color: var(--text-tertiary);
    line-height: 1.6;
}

.form-error {
    color: var(--state-error-color);
    font-size: 0.8rem;
    margin-top: 0.35rem;
    display: block;
}

@media (max-width: 575px) {
    .auth-card {
        padding: 2rem 1.5rem;
        border-radius: 1.25rem;
    }

    .auth-subtitle {
        font-size: 0.9rem;
    }

    .otp-inputs {
        gap: 0.65rem;
    }

    .otp-input {
        width: 2.6rem;
        height: 3.1rem;
        font-size: 1.2rem;
    }
}

html[data-theme="light"] .auth-card {
    background: var(--surface-card);
}

html[data-theme="light"] .auth-card:hover {
    box-shadow: 0 30px 60px rgba(148, 163, 184, 0.28);
}