/* ================================================================
 * XMFastPay Payment — Design System
 * ================================================================ */

/* ── 变量 / 基础 ────────────────────────────────────────── */
:root {
    --xmpp-primary: #2563eb;
    --xmpp-primary-dark: #1d4ed8;
    --xmpp-pix: #32b0b4;
    --xmpp-pix-dark: #27989c;
    --xmpp-success: #16a34a;
    --xmpp-failed: #dc2626;
    --xmpp-pending: #d97706;
    --xmpp-bg: #f8fafc;
    --xmpp-card-bg: #ffffff;
    --xmpp-border: #e2e8f0;
    --xmpp-text: #1e293b;
    --xmpp-text-muted: #64748b;
    --xmpp-radius: 12px;
    --xmpp-radius-sm: 8px;
    --xmpp-shadow: 0 4px 24px rgba(0,0,0,0.06);
}

/* ── Container ──────────────────────────────────────────── */
.xmpp-container {
    max-width: 560px;
    margin: 40px auto;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    color: var(--xmpp-text);
    line-height: 1.6;
}

/* ── Steps ──────────────────────────────────────────────── */
.xmpp-steps {
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 28px;
    gap: 0;
}
.xmpp-step {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 6px;
}
.xmpp-step-num {
    width: 34px;
    height: 34px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 14px;
    font-weight: 700;
    background: var(--xmpp-border);
    color: var(--xmpp-text-muted);
    transition: all 0.3s;
}
.xmpp-step.active .xmpp-step-num {
    background: var(--xmpp-primary);
    color: #fff;
}
.xmpp-step.completed .xmpp-step-num {
    background: var(--xmpp-success);
    color: #fff;
}
.xmpp-step-label {
    font-size: 12px;
    color: var(--xmpp-text-muted);
    white-space: nowrap;
}
.xmpp-step.active .xmpp-step-label {
    color: var(--xmpp-primary);
    font-weight: 600;
}
.xmpp-step-line {
    width: 48px;
    height: 2px;
    background: var(--xmpp-border);
    margin: 0 4px 20px;
    transition: background 0.3s;
}

/* ── Card ───────────────────────────────────────────────── */
.xmpp-card {
    background: var(--xmpp-card-bg);
    border: 1px solid var(--xmpp-border);
    border-radius: var(--xmpp-radius);
    padding: 24px;
    margin-bottom: 20px;
}

/* ── Summary ────────────────────────────────────────────── */
.xmpp-summary-title {
    font-size: 18px;
    font-weight: 700;
    margin: 0 0 16px;
    color: var(--xmpp-text);
}
.xmpp-summary-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 10px 0;
    border-bottom: 1px solid var(--xmpp-border);
    font-size: 14px;
}
.xmpp-summary-row:last-child { border-bottom: none; }
.xmpp-summary-row span { color: var(--xmpp-text-muted); }
.xmpp-price {
    font-size: 18px;
    color: var(--xmpp-primary);
    font-weight: 700;
}

/* ── Form ───────────────────────────────────────────────── */
.xmpp-form { margin: 0; }
.xmpp-field-group { margin-bottom: 18px; }
.xmpp-label {
    display: block;
    font-size: 13px;
    font-weight: 600;
    color: var(--xmpp-text);
    margin-bottom: 6px;
}
.xmpp-required { color: var(--xmpp-failed); }
.xmpp-hint {
    font-size: 12px;
    color: var(--xmpp-text-muted);
    margin-top: 4px;
}
.xmpp-input, .xmpp-select {
    width: 100%;
    padding: 11px 14px;
    border: 1px solid var(--xmpp-border);
    border-radius: var(--xmpp-radius-sm);
    font-size: 14px;
    color: var(--xmpp-text);
    background: #fff;
    transition: border-color 0.2s, box-shadow 0.2s;
    box-sizing: border-box;
}
.xmpp-input:focus, .xmpp-select:focus {
    outline: none;
    border-color: var(--xmpp-primary);
    box-shadow: 0 0 0 3px rgba(37,99,235,0.12);
}
.xmpp-input-lg { font-size: 18px; padding: 14px 16px; }
.xmpp-card-input { font-family: "Courier New", monospace; letter-spacing: 2px; }
.xmpp-select { appearance: none; background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%2364748b' d='M6 8L1 3h10z'/%3E%3C/svg%3E"); background-repeat: no-repeat; background-position: right 12px center; padding-right: 36px; }

.xmpp-field-row {
    display: flex;
    gap: 12px;
}
.xmpp-field-row > .xmpp-field-group { flex: 1; }
.xmpp-field-row-3 > .xmpp-field-group { flex: 1; }

/* ── Buttons ────────────────────────────────────────────── */
.xmpp-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 14px 32px;
    border: none;
    border-radius: var(--xmpp-radius-sm);
    font-size: 15px;
    font-weight: 600;
    cursor: pointer;
    text-decoration: none;
    transition: transform 0.15s, box-shadow 0.2s, opacity 0.2s;
    width: 100%;
}
.xmpp-btn:hover { transform: translateY(-1px); }
.xmpp-btn:active { transform: translateY(0); }
.xmpp-btn-primary {
    background: linear-gradient(135deg, var(--xmpp-primary), var(--xmpp-primary-dark));
    color: #fff;
    box-shadow: 0 4px 14px rgba(37,99,235,0.3);
}
.xmpp-btn-primary:hover { box-shadow: 0 6px 20px rgba(37,99,235,0.4); }
.xmpp-btn-pix {
    background: linear-gradient(135deg, var(--xmpp-pix), var(--xmpp-pix-dark));
    color: #fff;
    box-shadow: 0 4px 14px rgba(50,176,180,0.3);
}
.xmpp-btn-pix:hover { box-shadow: 0 6px 20px rgba(50,176,180,0.4); }
.xmpp-btn-outline {
    background: #fff;
    color: var(--xmpp-primary);
    border: 2px solid var(--xmpp-primary);
}
.xmpp-btn-sm { width: auto; padding: 10px 20px; font-size: 13px; }
.xmpp-btn-icon { font-size: 18px; }
.xmpp-btn-price {
    display: block;
    font-size: 12px;
    font-weight: 400;
    opacity: 0.8;
}
.xmpp-link-btn {
    background: none; border: none;
    color: var(--xmpp-primary); font-size: 13px;
    cursor: pointer; padding: 8px 0;
    text-decoration: underline;
}
.xmpp-btn.loading {
    pointer-events: none; opacity: 0.7;
}

/* ── Messages ───────────────────────────────────────────── */
.xmpp-msg {
    padding: 12px 16px;
    border-radius: var(--xmpp-radius-sm);
    font-size: 13px;
    font-weight: 500;
    margin-bottom: 16px;
}
.xmpp-msg.success { background: #f0fdf4; border: 1px solid #86efac; color: #166534; }
.xmpp-msg.error   { background: #fef2f2; border: 1px solid #fca5a5; color: #991b1b; }
.xmpp-msg.info    { background: #eff6ff; border: 1px solid #93c5fd; color: #1e40af; }

/* ── Card Logos ──────────────────────────────────────────── */
.xmpp-card-logos {
    display: flex;
    gap: 10px;
    justify-content: center;
    margin: 16px 0;
    flex-wrap: wrap;
}
.xmpp-card-logo {
    display: inline-block;
    padding: 4px 12px;
    border-radius: 4px;
    font-size: 11px;
    font-weight: 700;
    letter-spacing: 0.5px;
    border: 1px solid var(--xmpp-border);
}
.xmpp-card-logo.visa     { background: #1a1f71; color: #fff; border-color: #1a1f71; }
.xmpp-card-logo.master   { background: #eb001b; color: #fff; border-color: #eb001b; }
.xmpp-card-logo.jcb      { background: #0b7e3e; color: #fff; border-color: #0b7e3e; }
.xmpp-card-logo.ae       { background: #2e77bc; color: #fff; border-color: #2e77bc; }
.xmpp-card-logo.discover { background: #ff6000; color: #fff; border-color: #ff6000; }

.xmpp-footer-text {
    text-align: center;
    font-size: 12px;
    color: var(--xmpp-text-muted);
    margin-top: 16px;
}

/* ── Hidden ──────────────────────────────────────────────── */
.xmpp-hidden { display: none !important; }

/* ── Extra fields ───────────────────────────────────────── */
.xmpp-extra-fields {
    padding: 16px;
    background: var(--xmpp-bg);
    border-radius: var(--xmpp-radius-sm);
    margin-bottom: 16px;
}

/* ── Section headers ────────────────────────────────────── */
.xmpp-section {
    margin-bottom: 24px;
}
.xmpp-section-header {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 15px;
    font-weight: 700;
    color: var(--xmpp-text);
    padding-bottom: 8px;
    margin-bottom: 16px;
    border-bottom: 2px solid var(--xmpp-border);
}
.xmpp-section-icon { font-size: 18px; }

/* ── PIX Specific ───────────────────────────────────────── */
.xmpp-pix-container {
    --xmpp-primary: var(--xmpp-pix);
    --xmpp-primary-dark: var(--xmpp-pix-dark);
}
.xmpp-pix-banner {
    text-align: center;
    padding: 28px 20px;
    background: linear-gradient(135deg, #e0f7f7, #ccf0f0);
    border-radius: var(--xmpp-radius);
    margin-bottom: 24px;
}
.xmpp-pix-logo {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    margin-bottom: 8px;
}
.xmpp-pix-icon { font-size: 36px; }
.xmpp-pix-brand {
    font-size: 32px;
    font-weight: 800;
    color: var(--xmpp-pix-dark);
    letter-spacing: -1px;
}
.xmpp-pix-banner p {
    color: var(--xmpp-text-muted);
    font-size: 14px;
    margin: 0;
}
.xmpp-pix-result-card {
    text-align: center;
    padding: 28px;
}
.xmpp-pix-qr-placeholder {
    width: 200px;
    height: 200px;
    margin: 0 auto 20px;
    border: 2px dashed var(--xmpp-border);
    border-radius: var(--xmpp-radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    background: #fff;
}
.xmpp-pix-loading { text-align: center; color: var(--xmpp-text-muted); font-size: 13px; }
.xmpp-pix-info {
    text-align: left;
    margin-bottom: 16px;
}
.xmpp-pix-info-row {
    display: flex;
    justify-content: space-between;
    padding: 8px 0;
    border-bottom: 1px solid var(--xmpp-border);
    font-size: 14px;
}
.xmpp-pix-info-row:last-child { border-bottom: none; }
.xmpp-pix-info-row span { color: var(--xmpp-text-muted); }
.xmpp-pix-actions {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

/* ── Spinner ────────────────────────────────────────────── */
.xmpp-spinner {
    width: 32px;
    height: 32px;
    border: 3px solid var(--xmpp-border);
    border-top-color: var(--xmpp-primary);
    border-radius: 50%;
    animation: xmpp-spin 0.7s linear infinite;
    margin: 0 auto 10px;
}
@keyframes xmpp-spin { to { transform: rotate(360deg); } }

/* ── Result Page ────────────────────────────────────────── */
.xmpp-result-container {
    max-width: 480px;
}
.xmpp-result-card {
    background: #fff;
    border: 1px solid var(--xmpp-border);
    border-radius: var(--xmpp-radius);
    padding: 36px 28px;
    text-align: center;
}
.xmpp-result-icon {
    font-size: 56px;
    margin-bottom: 12px;
}
.xmpp-result-title {
    font-size: 24px;
    font-weight: 700;
    margin: 0 0 20px;
}
.xmpp-result-title.xmpp-result-success    { color: var(--xmpp-success); }
.xmpp-result-title.xmpp-result-failed     { color: var(--xmpp-failed); }
.xmpp-result-title.xmpp-result-pending    { color: var(--xmpp-pending); }
.xmpp-result-title.xmpp-result-processing { color: var(--xmpp-primary); }
.xmpp-result-title.xmpp-result-error      { color: var(--xmpp-failed); }
.xmpp-result-details {
    text-align: left;
    margin-bottom: 24px;
}
.xmpp-result-row {
    display: flex;
    justify-content: space-between;
    padding: 10px 12px;
    border-bottom: 1px solid var(--xmpp-border);
    font-size: 14px;
}
.xmpp-result-row:last-child { border-bottom: none; }
.xmpp-result-row span { color: var(--xmpp-text-muted); }
.xmpp-result-row strong { color: var(--xmpp-text); }
.xmpp-result-hint {
    color: var(--xmpp-text-muted);
    font-size: 14px;
}
.xmpp-result-hint p { margin-bottom: 12px; }
.xmpp-result-actions {
    margin-top: 20px;
}
.xmpp-result-actions .xmpp-btn {
    width: 100%;
    max-width: 280px;
    margin: 0 auto;
}

/* ── Responsive ─────────────────────────────────────────── */
@media (max-width: 600px) {
    .xmpp-container { margin: 16px; }
    .xmpp-card { padding: 16px; }
    .xmpp-field-row { flex-direction: column; gap: 0; }
    .xmpp-field-row-3 { flex-direction: column; gap: 0; }
    .xmpp-step-line { width: 24px; }
    .xmpp-step-num { width: 28px; height: 28px; font-size: 12px; }
    .xmpp-step-label { font-size: 10px; }
}