/* === Reset & Variables === */
*,
*::before,
*::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

/* Prevent zoom on iOS */
html {
    touch-action: manipulation;
    -webkit-text-size-adjust: 100%;
}

body {
    --primary: #000;
    --secondary: #fff;
    --backgroundPrimary: #f6f6f6;
    --backgroundSecondary: #ebebeb;
    --backgroundExpiration: #fff;
    --backgroundSuccessOverlay: rgb(58 194 112 / 16%);
    --borderPrimarySolid: rgb(0 0 0 / 10%);
    --textSecondary: #747474;
    --contentSecondary: #666;
    --success: #2aa668;
    --sElevation_4: 0 0 80px rgb(0 0 0 / 10%);
    --payform: linear-gradient(248deg, #ededed 6%, #f6f6f6 97%);
    --bg-actions: #fff;
    --btn-bg: #0a0a0a;
    --btn-color: #fff;
    --btn-hover: #242424;
    --btn-disabled-bg: #f6f6f6;
    --btn-disabled-color: grey;
    font-family: 'Golos Text', Inter, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    -webkit-font-smoothing: antialiased;
    line-height: 1.5;
}

body.dark {
    --primary: #fff;
    --secondary: #000;
    --backgroundPrimary: #000;
    --backgroundSecondary: #242424;
    --backgroundExpiration: #141414;
    --borderPrimarySolid: rgb(255 255 255 / 10%);
    --textSecondary: #a3a3a3;
    --contentSecondary: #c5c5c5;
    --payform: linear-gradient(255deg, #282828 4%, #232323 100%);
    --bg-actions: #141414;
    --btn-bg: #fff;
    --btn-color: #0a0a0a;
    --btn-hover: #a1a1a1;
    --btn-disabled-bg: #1a1a1a;
    --btn-disabled-color: #828282;
    --sElevation_4: 0 0 80px rgb(0 0 0 / 30%);
}

/* === Layout === */
.pay {
    min-height: 100vh;
    background: var(--secondary);
    color: var(--primary);
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
}

.pay-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 0 16px;
}

.pay__content {
    display: flex;
    flex-direction: column;
    max-width: 578px;
    width: 100%;
    margin-top: 40px;
    border-radius: 24px;
    box-shadow: var(--sElevation_4);
}

/* === Header === */
.pay__header {
    background: var(--payform);
    padding: 24px 32px 0;
    border-radius: 24px 24px 0 0;
}

.header__top {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 16px;
}

.header__logo {
    display: flex;
    align-items: center;
    gap: 12px;
}

.header__logo-img {
    height: 52px;
    width: auto;
}

.header__logo-img[alt="Towerex Exchange"] {
    height: 60px;
}

.header__invoice-id {
    font-size: 14px;
    font-weight: 500;
    color: var(--textSecondary);
    font-family: 'SF Mono', 'Fira Code', 'Courier New', monospace;
    letter-spacing: 0.3px;
}

/* === Info Section === */
.pay__info {
    background: var(--payform);
    padding: 0 32px 32px;
}

/* === Actions Section === */
.pay__actions {
    background: var(--bg-actions);
    padding: 32px;
    display: flex;
    flex-direction: column;
    gap: 24px;
    border-radius: 0 0 24px 24px;
}

/* === Invalid Message === */
.invalid-message {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    gap: 16px;
    padding: 32px 0;
}

.invalid-message__title {
    font-size: 20px;
    font-weight: 700;
    color: var(--primary);
}

.invalid-message__text {
    font-size: 15px;
    color: var(--contentSecondary);
    line-height: 1.6;
    max-width: 360px;
}

/* === Invoice Details === */
.invoice-details {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

/* === Invoice Meta === */
.invoice-meta {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.invoice-meta__row {
    display: flex;
    align-items: center;
}

.invoice-meta__label {
    font-size: 18px;
    font-weight: 700;
    color: var(--primary);
}

.invoice-meta__sublabel {
    font-size: 14px;
    color: var(--textSecondary);
    font-weight: 500;
}

.invoice-meta__grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
    margin-top: 8px;
}

.invoice-meta__grid--custom {
    grid-template-columns: 1fr 1fr;
}

/* --- Card structure: both cards identical layout --- */
.invoice-meta__cell {
    background: var(--backgroundExpiration);
    border-radius: 12px;
    padding: 14px 16px;
    display: flex;
    flex-direction: column;
}

/* Row 1: label — identical on both cards */
.invoice-meta__cell-label {
    font-size: 11px;
    font-weight: 600;
    color: var(--textSecondary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    height: 16px;
    line-height: 16px;
}

/* Row 2: main value — identical height on both cards */
.invoice-meta__cell-value {
    font-size: 14px;
    font-weight: 600;
    color: var(--primary);
    height: 20px;
    line-height: 20px;
    margin-top: 6px;
    margin-bottom: 8px;
}

/* Row 3: bottom section — divider + content, pushed to bottom */
.invoice-meta__cell-meeting,
.invoice-meta__timer {
    display: flex;
    align-items: center;
    margin-top: auto;
    padding-top: 14px;
    border-top: 1px solid rgba(255,255,255,0.08);
    height: 18px;
    box-sizing: content-box;
}

/* --- Date & Time card --- */
.invoice-meta__cell--date .invoice-meta__cell-row {
    display: flex;
    justify-content: space-between;
    align-items: baseline;
    height: 20px;
    margin-top: 6px;
}

.invoice-meta__cell--date .invoice-meta__cell-row .invoice-meta__cell-value {
    margin-top: 0;
}

.invoice-meta__cell-time {
    font-size: 14px;
    font-weight: 600;
    color: var(--textSecondary);
    line-height: 20px;
}

.invoice-meta__cell-meeting {
    font-size: 11px;
    font-weight: 500;
    color: var(--textSecondary);
    text-transform: uppercase;
    letter-spacing: 0.3px;
}

/* --- Status card --- */
.invoice-meta__cell-value--status {
    display: flex;
    align-items: center;
    gap: 6px;
    color: #f59e0b;
}

.invoice-meta__timer {
    gap: 6px;
}

.invoice-meta__timer-label {
    font-size: 11px;
    font-weight: 500;
    color: var(--textSecondary);
    text-transform: uppercase;
    letter-spacing: 0.3px;
}

.invoice-meta__timer-value {
    font-size: 11px;
    font-weight: 600;
    color: var(--primary);
    font-family: monospace;
}

.invoice-meta__timer-circle {
    display: flex;
    align-items: center;
    flex-shrink: 0;
    margin-left: auto;
}

.status-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: #f59e0b;
    flex-shrink: 0;
    animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.4; }
}

/* === Rates Section === */
.invoice-rates {
    background: var(--backgroundExpiration);
    border-radius: 16px;
    overflow: hidden;
}

.invoice-rates__header {
    padding: 14px 20px 0;
}

.invoice-rates__title {
    font-size: 12px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--textSecondary);
}

.invoice-rates__amounts {
    padding: 16px 20px;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.invoice-rates__exchange-line {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.invoice-rates__exchange-label {
    font-size: 12px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--textSecondary);
}

.invoice-rates__exchange-value {
    display: flex;
    align-items: center;
    gap: 10px;
}

.invoice-rates__exchange-arrow {
    display: flex;
    justify-content: center;
    padding: 2px 0;
}

.invoice-rates__coin-icon {
    width: 28px;
    height: 28px;
    border-radius: 50%;
    object-fit: contain;
}

.invoice-rates__fiat {
    display: flex;
    align-items: baseline;
    gap: 4px;
}

.invoice-rates__fiat-icon {
    width: 28px;
    height: 28px;
    border-radius: 50%;
    background: rgba(255,255,255,0.1);
    color: var(--textSecondary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 16px;
    font-weight: 700;
    flex-shrink: 0;
}

.invoice-rates__amount {
    font-size: 18px;
    font-weight: 700;
    color: var(--primary);
    letter-spacing: -0.3px;
}

.invoice-rates__amount--fiat {
    font-size: 18px;
    font-weight: 700;
    color: var(--primary);
}

.invoice-rates__detail {
    display: flex;
    flex-direction: column;
    gap: 4px;
    padding: 12px 20px 16px;
    border-top: 1px solid var(--borderPrimarySolid);
}

.invoice-rates__rate {
    font-size: 13px;
    color: var(--textSecondary);
    font-family: 'SF Mono', 'Fira Code', 'Courier New', monospace;
}

.invoice-rates__bonus {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    font-size: 13px;
    font-weight: 600;
    color: var(--textSecondary);
    background: var(--backgroundSecondary);
    padding: 4px 10px;
    border-radius: 6px;
    width: fit-content;
}

.invoice-rates__bonus::before {
    content: '\2713';
    font-weight: 700;
}

/* === Wallet Address Input === */
.wallet-address {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.section-label {
    display: block;
    font-size: 12px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--textSecondary);
    margin-bottom: -12px;
}

.wallet-address__label {
    font-size: 12px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--textSecondary);
}

.wallet-address__input-wrap {
    position: relative;
}

.wallet-address__input {
    width: 100%;
    padding: 14px 16px;
    background: var(--backgroundExpiration);
    border: 1px solid var(--borderPrimarySolid);
    border-radius: 12px;
    color: var(--primary);
    font-size: 14px;
    font-family: 'SF Mono', 'Fira Code', 'Courier New', monospace;
    letter-spacing: 0.2px;
    outline: none;
    transition: border-color .2s;
}

.wallet-address__input::placeholder {
    color: var(--textSecondary);
    font-family: inherit;
}

.wallet-address__input:focus {
    border-color: var(--primary);
}

/* === Delivery Method === */
.delivery-method {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.delivery-method__label {
    font-size: 12px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--textSecondary);
}

.delivery-method__options {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
}

.delivery-method__option {
    display: flex;
    flex-direction: row;
    align-items: center;
    gap: 12px;
    padding: 14px 16px;
    background: var(--backgroundExpiration);
    border: 2px solid var(--borderPrimarySolid);
    border-radius: 14px;
    cursor: pointer;
    transition: border-color .2s, background .2s;
    color: var(--textSecondary);
    font-family: inherit;
}

.delivery-method__text {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: 1px;
}

.delivery-method__option:hover {
    border-color: rgba(255,255,255,0.3);
}

.delivery-method__option.active {
    border-color: var(--primary);
    color: var(--textSecondary);
    background: var(--backgroundExpiration);
}

.delivery-method__icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: 10px;
    background: var(--backgroundSecondary);
    flex-shrink: 0;
}

.delivery-method__option.active .delivery-method__icon {
    background: var(--backgroundSecondary);
}

.delivery-method__name {
    font-size: 14px;
    font-weight: 600;
}

.delivery-method__price {
    font-size: 12px;
    font-weight: 500;
    color: var(--success);
}

/* === Timer === */
.expire {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 14px 16px;
    background: var(--backgroundExpiration);
    border-radius: 14px;
}

.expire__icon {
    flex-shrink: 0;
    line-height: 0;
}

.expire__text {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.expire__label {
    font-size: 15px;
    color: var(--contentSecondary);
}

.expire__time {
    font-size: 16px;
    font-weight: 600;
    color: #3ac270;
}

/* === Verify Prompt === */
.verify-prompt__text {
    font-size: 15px;
    color: var(--contentSecondary);
    text-align: center;
}

.verify-disclaimer {
    font-size: 13px;
    color: var(--textSecondary);
    text-align: center;
    line-height: 1.5;
}

/* === Buttons === */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    border: none;
    border-radius: 12px;
    cursor: pointer;
    font-family: inherit;
    font-weight: 500;
    transition: background .2s, opacity .2s;
    white-space: nowrap;
    text-decoration: none;
}

.btn--large {
    height: 56px;
    padding: 0 24px;
    font-size: 16px;
    font-weight: 600;
    border-radius: 16px;
}

.btn--full {
    width: 100%;
}

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

.btn--primary:hover {
    opacity: .85;
}

.btn--primary:active {
    opacity: .75;
}

.btn__logo {
    width: 24px;
    height: 24px;
    flex-shrink: 0;
}

/* === Alt Pay Buttons === */
.alt-pay__buttons {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.alt-pay__buttons .btn__logo {
    width: 28px;
    height: 28px;
}

/* === Expired Banner === */
.expired-banner {
    background: var(--payform);
    padding: 0 32px 24px;
    display: none;
}

.expired-banner__inner {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 20px 24px;
    background: rgba(239, 68, 68, 0.12);
    border: 1px solid rgba(239, 68, 68, 0.25);
    border-radius: 16px;
}

.expired-banner__icon {
    flex-shrink: 0;
}

.expired-banner__text {
    display: flex;
    flex-direction: column;
    gap: 3px;
}

.expired-banner__title {
    font-size: 16px;
    font-weight: 700;
    color: var(--primary);
}

.expired-banner__sub {
    font-size: 15px;
    color: var(--contentSecondary);
}

/* === FAQ Mini === */
.faq-mini {
    border-top: 1px solid var(--borderPrimarySolid);
    padding-top: 0;
}

.faq-item {
    border-bottom: 1px solid var(--borderPrimarySolid);
}

.faq-item:last-child {
    border-bottom: none;
}

.faq-item__question {
    display: flex;
    justify-content: space-between;
    align-items: center;
    width: 100%;
    padding: 16px 0;
    background: none;
    border: none;
    color: var(--primary);
    font-size: 14px;
    font-weight: 600;
    font-family: inherit;
    cursor: pointer;
    text-align: left;
    gap: 16px;
    transition: opacity .2s;
}

.faq-item__question:hover {
    opacity: .7;
}

.faq-item__toggle {
    font-size: 20px;
    font-weight: 300;
    flex-shrink: 0;
    color: var(--textSecondary);
    transition: transform .2s;
    line-height: 1;
}

.faq-item.open .faq-item__toggle {
    transform: rotate(45deg);
}

.faq-item__answer {
    display: none;
    padding: 0 0 16px;
}

.faq-item.open .faq-item__answer {
    display: block;
}

.faq-item__answer p {
    font-size: 14px;
    line-height: 1.6;
    color: var(--contentSecondary);
}

/* === Footer === */
.pay__footer {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    padding: 24px 16px 40px;
}

.footer__text {
    font-size: 15px;
    color: var(--contentSecondary);
    text-align: center;
}

.footer__icons {
    display: flex;
    gap: 8px;
    margin-top: 4px;
}

.footer__icon {
    display: flex;
    line-height: 0;
}

/* === Spinner (for buttons) === */
.confirm__spinner {
    animation: spin 2s linear infinite;
    flex-shrink: 0;
}

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

/* === Responsive === */
@media (max-width: 520px) {
    .pay-container {
        padding: 0;
    }

    .pay__content {
        margin-top: 0;
        border-radius: 0;
        box-shadow: none;
    }

    .pay__header {
        border-radius: 0;
        padding: 14px 16px 0;
    }

    .header__top {
        margin-bottom: 16px;
    }

    .header__logo-img {
        height: 40px;
    }

    .header__invoice-id {
        font-size: 11px;
        padding-bottom: 12px;
    }

    .delivery-method__option {
        padding: 16px 12px;
    }

    .pay__info {
        padding: 0 16px 24px;
    }

    .pay__actions {
        padding: 24px 16px;
        border-radius: 0 !important;
        padding-bottom: 32px;
    }

    .expired-banner {
        padding: 0 16px 16px;
    }

    .expired-banner__inner {
        flex-direction: column;
        text-align: center;
        padding: 16px;
        gap: 12px;
    }

    .invoice-meta__grid,
    .invoice-meta__grid--custom {
        grid-template-columns: 1fr 1fr;
    }

    .invoice-meta__cell {
        padding: 10px 12px;
    }

    .invoice-meta__cell-label {
        font-size: 10px;
    }

    .invoice-meta__cell-value {
        font-size: 12px;
        height: 18px;
        line-height: 18px;
    }

    .invoice-meta__cell-time {
        font-size: 12px;
    }

    .invoice-meta__cell--date .invoice-meta__cell-row {
        height: 18px;
    }

    .invoice-meta__cell-meeting,
    .invoice-meta__timer {
        height: 24px;
        padding-top: 8px;
    }

    .invoice-meta__cell-meeting {
        font-size: 10px;
    }

    .invoice-meta__timer-label {
        font-size: 10px;
    }

    .invoice-meta__timer-value {
        font-size: 10px;
    }

    .invoice-meta__timer-circle svg {
        height: 16px;
        width: 16px;
    }

    .invoice-rates__amount {
        font-size: 20px;
    }

    .invoice-rates__amount--fiat {
        font-size: 20px;
    }

    .header__logo-img[alt="Towerex Exchange"] {
        height: 50px;
    }

    .btn--large {
        height: 50px;
        padding: 0 18px;
        font-size: 15px;
    }

    .pay__footer {
        padding: 20px 16px 32px;
    }
}