/*
 * Crypto page rules: only what crypto.html needs beyond theme.css and layout.css - the hero
 * trust list, the Binance Pay panel, the wallet cards the script renders, the security notice
 * and the QR modal. Linked third. A rule moves to layout.css once a second page uses it.
 *
 * One card style serves every coin. The dark page gave each of the fourteen its own accent
 * colour through class names carried in the script's data; the light system has one accent.
 */

/* Hero: the four check-marked claims under the description. */
.trust-list {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 0.75rem 1.5rem;
    list-style: none;
    color: var(--color-text-secondary);
    font-size: 0.95rem;
}

.trust-list li {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}

.trust-list svg {
    flex-shrink: 0;
    width: 20px;
    height: 20px;
    color: var(--color-primary-strong);
}

/* Binance Pay: the QR beside the numbered steps, stacked on phones. */
.pay-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
    align-items: center;
}

.pay-grid .qr-container {
    justify-self: center;
}

.pay-grid .qr-container img {
    width: 256px;
    max-width: 100%;
    height: auto;
}

.steps {
    list-style: none;
    counter-reset: step;
    margin-bottom: 1.5rem;
}

.steps li {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    margin-bottom: 0.75rem;
    color: var(--color-text-secondary);
}

.steps strong {
    color: var(--color-text);
}

/* The step number: dark text on the brand green (5.58:1), as on the primary button. */
.steps li::before {
    counter-increment: step;
    content: counter(step);
    flex-shrink: 0;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 2rem;
    height: 2rem;
    border-radius: 50%;
    background: var(--color-primary);
    color: var(--color-text-on-primary);
    font-weight: 700;
}

.pay-id .wallet-address {
    margin-bottom: 0;
}

/* Wallet cards, rendered by the script into #crypto-wallets-container. */
.wallet-list {
    display: grid;
    gap: 1.5rem;
}

.crypto-card-head {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1.25rem;
}

.crypto-icon {
    flex-shrink: 0;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: var(--color-primary-soft);
    color: var(--color-primary-strong);
    font-size: 1.5rem;
    font-weight: 700;
}

.crypto-card-title {
    font-size: 1.2rem;
    font-weight: 700;
}

.crypto-card-meta {
    font-size: 0.9rem;
    color: var(--color-text-secondary);
}

.crypto-info {
    margin-top: 0.25rem;
    font-size: 0.8rem;
    color: var(--color-text-secondary);
}

/* The XRP memo warning: emphasis in the text colour, not a red the system does not have. */
.crypto-info--warning {
    color: var(--color-text);
    font-weight: 600;
}

.crypto-card-body {
    display: flex;
    flex-wrap: wrap;
    align-items: flex-start;
    gap: 1.5rem;
}

.crypto-card-details {
    flex: 1 1 280px;
    min-width: 0;
}

.qr-label {
    margin-bottom: 0.5rem;
    font-size: 0.8rem;
    color: var(--color-text-secondary);
}

.qr-block .qr-label {
    text-align: center;
}

/* A QR code on its own white surface; as a button it opens the enlarged view. */
.qr-container {
    display: inline-block;
    padding: 1.25rem;
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-card);
}

.qr-container img {
    display: block;
}

.qr-thumb {
    font: inherit;
    color: inherit;
    cursor: pointer;
    transition: transform var(--transition-base), border-color var(--transition-base);
}

.qr-thumb:hover {
    transform: scale(1.05);
    border-color: var(--color-primary-strong);
}

.qr-thumb img {
    width: 120px;
    height: 120px;
}

.wallet-address {
    margin-bottom: 0.75rem;
    padding: 0.75rem;
    font-family: var(--font-mono);
    font-size: 0.85rem;
    word-break: break-all;
    color: var(--color-text);
    background: var(--color-surface-muted);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
}

.copy-btn {
    width: 100%;
    justify-content: center;
    padding: 0.6rem 1rem;
    font-size: 0.9rem;
}

.copy-btn + .qr-label {
    margin-top: 1rem;
}

.copy-btn--done {
    background: var(--color-primary-soft);
    border-color: var(--color-primary);
}

/* Four short cards: auto-fit would fall three-plus-one at desktop width. */
.features--four {
    grid-template-columns: repeat(4, minmax(0, 1fr));
}

/* Security notice: a panel whose title carries the shield. */
.notice .panel-title {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.notice svg {
    flex-shrink: 0;
    width: 1.75rem;
    height: 1.75rem;
    color: var(--color-primary-strong);
}

.notice p {
    margin-bottom: 0.75rem;
    color: var(--color-text-secondary);
    line-height: 1.8;
}

.notice p:last-child {
    margin-bottom: 0;
}

.notice strong {
    color: var(--color-text);
}

/* QR modal: the same overlay and surface as the tech modal on the home page. fadeIn comes
   from layout.css. */
.qr-modal {
    display: none;
    position: fixed;
    inset: 0;
    z-index: 1000;
    padding: 20px;
    background: var(--color-overlay);
    backdrop-filter: blur(10px);
    animation: fadeIn 0.3s ease;
}

.qr-modal.active {
    display: flex;
    align-items: center;
    justify-content: center;
}

.qr-modal-content {
    position: relative;
    display: flex;
    flex-direction: column;
    align-items: center;
    max-width: 90vw;
    max-height: 90vh;
    padding: 2.5rem;
    background: var(--color-surface);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-card-lg);
    animation: scaleIn 0.3s ease;
}

.qr-modal-close {
    position: absolute;
    top: 15px;
    right: 15px;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border: none;
    border-radius: 50%;
    background: var(--color-surface-muted);
    color: var(--color-text);
    font-size: 24px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.qr-modal-close:hover {
    background: var(--color-border);
    transform: rotate(90deg);
}

.qr-modal-title {
    margin-bottom: 0.5rem;
    padding: 0 2.5rem;
    font-size: 1.5rem;
    font-weight: 700;
    text-align: center;
}

.qr-modal-subtitle {
    margin-bottom: 1.5rem;
    font-size: 0.9rem;
    color: var(--color-text-secondary);
    text-align: center;
}

/* The enlarged code. The width lives here, not in the asset: the SVGs carry a viewBox only. */
.qr-modal-image {
    width: 400px;
    max-width: 100%;
    height: auto;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-card);
}

@keyframes scaleIn {
    from {
        transform: scale(0.9);
        opacity: 0;
    }
    to {
        transform: scale(1);
        opacity: 1;
    }
}

@media (max-width: 1024px) {
    .features--four {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .qr-modal-image {
        max-width: 350px;
    }
}

@media (max-width: 768px) {
    .features--four,
    .pay-grid {
        grid-template-columns: 1fr;
    }

    .qr-modal-content {
        padding: 2rem 1.25rem;
    }

    .qr-modal-title {
        font-size: 1.25rem;
    }

    .qr-modal-image {
        max-width: 280px;
    }
}