/* Explain: Styles for UI components like header, footer, and verification elements. */
.site-header {
    border-bottom: 1px solid var(--border-color);
    background: var(--surface-color);
}

.brand {
    display: flex;
    flex-direction: column;
    text-decoration: none;
    color: var(--primary-color);
}

.brand-name {
    font-family: var(--font-logo);
    font-size: 1.35rem;
    font-weight: 700;
    line-height: 1;
}

.brand-sub {
    margin-top: 0.3rem;
    color: var(--text-muted);
    font-size: 0.55rem;
    font-weight: 700;
    letter-spacing: 0.28em;
    text-transform: uppercase;
}

.secure-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    color: var(--success-color);
    font-size: 0.75rem;
    font-weight: 600;
}

.site-footer {
    border-top: 1px solid var(--border-color);
    background: var(--surface-color);
}

.verify-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    border-radius: 999px;
    background: var(--secondary-color);
    padding: 0.35rem 0.9rem;
    color: var(--primary-color);
    font-size: 0.72rem;
    font-weight: 700;
}

.verify-title {
    margin-top: 0.9rem;
    font-size: 1.5rem;
    font-weight: 700;
    letter-spacing: -0.02em;
}

.verify-sub {
    margin-top: 0.4rem;
    color: var(--text-muted);
    font-size: 0.85rem;
}

@media (min-width: 1024px) {
    .verify-title {
        font-size: 2rem;
    }

    .verify-sub {
        font-size: 1rem;
    }
}

.verify-stepper {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    margin: 1.75rem 0 1.5rem;
    padding: 0;
    list-style: none;
}

.verify-stepper-item {
    position: relative;
    display: flex;
    flex: 1;
    flex-direction: column;
    align-items: center;
    gap: 0.4rem;
    color: var(--text-muted);
    font-size: 0.72rem;
    font-weight: 600;
}

.verify-stepper-item .dot {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 2rem;
    height: 2rem;
    border-radius: 999px;
    background: var(--secondary-color);
    color: var(--text-muted);
    font-size: 0.85rem;
    font-weight: 700;
    transition: all 300ms ease;
}

.verify-stepper-item.is-active {
    color: var(--text-color);
}

.verify-stepper-item.is-active .dot {
    background: var(--primary-color);
    color: #ffffff;
}

.verify-stepper-item.is-done .dot {
    background: var(--success-color);
    color: #ffffff;
}

.field {
    margin-bottom: 1.1rem;
}

.form-label {
    display: block;
    margin-bottom: 0.5rem;
    color: var(--text-color);
    font-size: 0.8rem;
    font-weight: 700;
}

.field-hint {
    margin-top: 0.4rem;
    color: var(--text-muted);
    font-size: 0.72rem;
}

.field-input {
    width: 100%;
    min-height: 3rem;
    padding: 0 1rem;
    border: 1px solid var(--border-color);
    border-radius: 0.9rem;
    background: var(--field-bg);
    color: var(--text-color);
    font-size: 0.95rem;
    transition: border-color 200ms ease, box-shadow 200ms ease;
}

.field-input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.15);
}

.field-input::placeholder {
    color: #9aa7b8;
}

.carrier-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 0.6rem;
}

.carrier-chip {
    min-height: 2.9rem;
    border: 1px solid var(--border-color);
    border-radius: 0.9rem;
    background: var(--field-bg);
    color: var(--text-color);
    font-size: 0.9rem;
    font-weight: 700;
    transition: all 200ms ease;
}

.carrier-chip:hover {
    border-color: var(--primary-color);
}

.carrier-chip.is-selected {
    border-color: var(--primary-color);
    background: var(--secondary-color);
    color: var(--primary-color);
    box-shadow: inset 0 0 0 1px var(--primary-color);
}

.phone-group {
    display: flex;
    gap: 0.5rem;
}

.phone-select {
    width: 6.5rem;
    flex-shrink: 0;
}

.terms-box {
    margin-bottom: 1.1rem;
    padding: 1rem;
    border: 1px solid var(--border-color);
    border-radius: 1rem;
    background: var(--field-bg);
}

.terms-all {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    padding-bottom: 0.8rem;
    border-bottom: 1px solid var(--border-color);
    font-size: 0.95rem;
    font-weight: 700;
}

.terms-list {
    display: grid;
    gap: 0.55rem;
    margin-top: 0.8rem;
}

.terms-item {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    color: var(--text-muted);
    font-size: 0.82rem;
}

.checkbox {
    width: 1.15rem;
    height: 1.15rem;
    accent-color: var(--primary-color);
}

.btn-primary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    width: 100%;
    min-height: 3.1rem;
    border: 0;
    border-radius: 0.9rem;
    background: var(--primary-color);
    color: #ffffff;
    font-size: 1rem;
    font-weight: 700;
    box-shadow: var(--shadow-button);
    transition: background 200ms ease, transform 200ms ease;
}

.btn-primary:hover {
    background: var(--primary-hover);
}

.btn-primary:active {
    transform: translateY(1px);
}

.btn-primary:disabled {
    background: var(--text-muted);
    box-shadow: none;
    cursor: not-allowed;
    transform: none;
}

.btn-ghost {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 3.1rem;
    padding: 0 1.2rem;
    border: 1px solid var(--border-color);
    border-radius: 0.9rem;
    background: var(--surface-color);
    color: var(--text-color);
    font-size: 0.95rem;
    font-weight: 700;
    transition: all 200ms ease;
}

.btn-ghost:hover {
    border-color: var(--primary-color);
    color: var(--primary-color);
}

.form-status {
    min-height: 1.1rem;
    margin: 0.5rem 0 0.9rem;
    font-size: 0.82rem;
    font-weight: 600;
}

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

.form-status.error {
    color: var(--danger-color);
}

.step2-title {
    font-size: 1.15rem;
    font-weight: 700;
}

.step2-sub {
    margin-top: 0.4rem;
    color: var(--text-muted);
    font-size: 0.85rem;
}

.code-group {
    display: flex;
    justify-content: center;
    gap: 0.5rem;
    margin: 1.5rem 0 0.75rem;
}

.code-input {
    width: 100%;
    max-width: 3.2rem;
    height: 3.6rem;
    border: 1px solid var(--border-color);
    border-radius: 0.8rem;
    background: var(--field-bg);
    color: var(--text-color);
    text-align: center;
    font-size: 1.4rem;
    font-weight: 700;
}

.code-input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.15);
}

.code-input:disabled {
    background: var(--background-color);
    color: var(--text-muted);
    cursor: not-allowed;
}

.code-meta {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 1.1rem;
    font-size: 0.85rem;
}

.code-timer {
    color: var(--danger-color);
    font-weight: 700;
    font-variant-numeric: tabular-nums;
}

.code-resend {
    border: 0;
    background: none;
    color: var(--primary-color);
    font-size: 0.85rem;
    font-weight: 700;
    text-decoration: underline;
}

.done-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 4.5rem;
    height: 4.5rem;
    border-radius: 999px;
    background: var(--secondary-color);
    color: var(--success-color);
    font-size: 2rem;
}

.done-icon.is-error {
    background: rgba(220, 38, 38, 0.08);
    color: var(--danger-color);
}

.done-title {
    margin-top: 1.25rem;
    font-size: 1.3rem;
    font-weight: 700;
}

.done-sub {
    margin-top: 0.4rem;
    color: var(--text-muted);
    font-size: 0.85rem;
}

.done-summary {
    display: grid;
    gap: 0.75rem;
    margin: 1.5rem 0;
}

.done-summary > div {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.85rem 1rem;
    border-radius: 0.8rem;
    background: var(--secondary-color);
}

.done-summary dt {
    color: var(--text-muted);
    font-size: 0.85rem;
}

.done-summary dd {
    margin: 0;
    font-size: 0.9rem;
    font-weight: 700;
}

.current-code {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 1.25rem;
    padding: 0.85rem 1rem;
    border-radius: 0.8rem;
    background: var(--secondary-color);
}

.current-code span {
    color: var(--text-muted);
    font-size: 0.85rem;
}

.current-code strong {
    color: var(--primary-color);
    font-size: 1.25rem;
    font-weight: 700;
    letter-spacing: 0.2em;
    font-variant-numeric: tabular-nums;
}

.lang-select {
    position: relative;
}

.lang-trigger {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    min-height: 2.6rem;
    padding: 0 0.75rem;
    border: 1px solid var(--border-color);
    border-radius: 999px;
    background: var(--surface-color);
    color: var(--text-color);
    font-size: 0.78rem;
    font-weight: 700;
    transition: border-color 200ms ease, color 200ms ease;
}

.lang-trigger:hover {
    border-color: var(--primary-color);
    color: var(--primary-color);
}

.lang-caret {
    font-size: 0.6rem;
    opacity: 0.6;
}

.lang-menu {
    position: absolute;
    right: 0;
    top: calc(100% + 0.4rem);
    z-index: 50;
    display: none;
    min-width: 9rem;
    margin: 0;
    padding: 0.35rem;
    list-style: none;
    border: 1px solid var(--border-color);
    border-radius: 0.9rem;
    background: var(--surface-color);
    box-shadow: var(--shadow-soft);
}

.lang-select.is-open .lang-menu {
    display: block;
}

.lang-menu li {
    list-style: none;
}

.lang-option {
    display: block;
    width: 100%;
    padding: 0.5rem 0.75rem;
    border: 0;
    border-radius: 0.6rem;
    background: transparent;
    color: var(--text-color);
    text-align: left;
    font-size: 0.82rem;
    font-weight: 600;
    transition: background 200ms ease, color 200ms ease;
}

.lang-option:hover {
    background: var(--secondary-color);
    color: var(--primary-color);
}

.lang-option.is-active {
    background: var(--secondary-color);
    color: var(--primary-color);
    font-weight: 700;
}