/* ── CSS Custom Properties ─────────────────────────────────────── */

:root {
    --bg:           #fafafa;
    --surface:      #ffffff;
    --surface-alt:  #f5f5f5;
    --border:       #e5e7eb;
    --text:         #1a1a1a;
    --text-muted:   #6b7280;
    --text-dim:     #9ca3af;
    --primary:      #003366;
    --primary-hover:#002244;
    --nav-bg:       #ffffff;
    --nav-text:     #374151;
    --radius:       4px;
    --transition:   0.15s ease;
}

[data-theme="dark"] {
    --bg:           #111111;
    --surface:      #1a1a1a;
    --surface-alt:  #222222;
    --border:       #2e2e2e;
    --text:         #f0f0f0;
    --text-muted:   #888888;
    --text-dim:     #555555;
    --primary:      #4a90d9;
    --primary-hover:#60a5fa;
    --nav-bg:       #1a1a1a;
    --nav-text:     #d0d0d0;
}

/* ── Base ──────────────────────────────────────────────────────── */

*, *::before, *::after {
    box-sizing: border-box;
}

html {
    transition: background-color var(--transition), color var(--transition);
}

body {
    background-color: var(--bg);
    color: var(--text);
    font-family: system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif;
    font-size: 15px;
    line-height: 1.6;
    margin: 0;
    padding: 0;
    transition: background-color var(--transition), color var(--transition);
}

p {
    color: var(--text);
    font-size: 15px;
    margin: 0 0 12px;
}

a {
    color: var(--primary);
    text-decoration: none;
}

a:hover {
    text-decoration: underline;
}

/* ── Site Header ───────────────────────────────────────────────── */

.site-header {
    display: grid;
    grid-template-columns: 1fr auto 1fr;
    align-items: center;
    background-color: var(--nav-bg);
    border-bottom: 1px solid var(--border);
    padding: 0 24px;
    height: 52px;
    position: sticky;
    top: 0;
    z-index: 100;
    transition: background-color var(--transition), border-color var(--transition);
}

.header-logo {
    display: flex;
    align-items: center;
    gap: 8px;
    flex-shrink: 0;
    text-decoration: none;
}

.img-logo {
    width: 28px;
    height: 28px;
}

.logo-text {
    font-size: 15px;
    font-weight: 600;
    color: var(--text);
    letter-spacing: -0.01em;
}

.site-nav {
    display: flex;
    justify-content: center;
}

.menu {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    align-items: center;
    gap: 2px;
}

.menu li {
    margin: 0;
}

.menu a {
    display: inline-block;
    text-decoration: none;
    color: var(--nav-text);
    padding: 5px 10px;
    font-size: 14px;
    font-weight: 500;
    border-radius: var(--radius);
    transition: color var(--transition), background-color var(--transition);
}

.menu a:hover {
    color: var(--text);
    background-color: var(--surface-alt);
}

.nav-sep {
    width: 1px;
    height: 16px;
    background-color: var(--border);
    margin: 0 6px;
    align-self: center;
    flex-shrink: 0;
}

/* ── Dark Mode Toggle ──────────────────────────────────────────── */

.theme-toggle {
    justify-self: end;
    width: 32px;
    height: 32px;
    border-radius: var(--radius);
    border: 1px solid var(--border);
    background-color: transparent;
    color: var(--text-muted);
    font-size: 16px;
    line-height: 1;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background-color var(--transition), border-color var(--transition), color var(--transition);
}

.theme-toggle:hover {
    background-color: var(--surface-alt);
    color: var(--text);
    border-color: var(--text-muted);
}

/* ── Site Content & Footer ─────────────────────────────────────── */

.site-content {
    min-height: calc(100vh - 52px - 44px);
    padding: 24px 0;
}

.site-footer {
    text-align: center;
    padding: 12px;
    border-top: 1px solid var(--border);
}

.disclaimer {
    font-size: 13px;
    color: var(--text-dim);
    margin: 0;
}


/* ── Home Grid ─────────────────────────────────────────────────── */

.home-grid {
    display: grid;
    grid-template-columns: repeat(2, 220px);
    gap: 1px;
    background: var(--border);
    border: 1px solid var(--border);
    width: fit-content;
    margin: 8px auto 40px;
}

.home-tile {
    display: flex;
    flex-direction: column;
    padding: 24px 20px;
    background: var(--surface);
    text-decoration: none;
    color: var(--text);
    transition: background var(--transition);
    min-height: 100px;
}

.home-tile:hover {
    background: var(--surface-alt);
    text-decoration: none;
}

.tile-header {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 6px;
}

.tile-icon {
    color: var(--text-dim);
    flex-shrink: 0;
}

.home-tile:hover .tile-icon {
    color: var(--primary);
    transition: color var(--transition);
}

.tile-label {
    display: block;
    font-weight: 600;
    font-size: 15px;
    color: var(--text);
    margin-bottom: 4px;
}

.tile-desc {
    display: block;
    font-size: 13px;
    color: var(--text-muted);
    line-height: 1.4;
}

/* ── Info Button ───────────────────────────────────────────────── */

.info-button-container {
    text-align: center;
    margin-top: 16px;
}

.info-button {
    padding: 7px 18px;
    background-color: transparent;
    color: var(--primary);
    border: 1px solid var(--primary);
    border-radius: var(--radius);
    cursor: pointer;
    font-size: 13px;
    font-weight: 500;
    transition: background-color var(--transition), color var(--transition);
}

.info-button:hover {
    background-color: var(--primary);
    color: #fff;
}

/* ── Info Page (About) ─────────────────────────────────────────── */

.info-page-container {
    width: min(640px, 95vw);
    margin: 0 auto;
    padding: 20px 28px;
    background-color: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    transition: background-color var(--transition), border-color var(--transition);
}

.info-page-container p:last-child {
    margin-bottom: 0;
}

.info-item {
    margin-bottom: 14px;
}

.info-item:last-child {
    margin-bottom: 0;
}

.info-item-label {
    display: flex;
    align-items: center;
    gap: 7px;
    font-weight: 600;
    font-size: 15px;
    color: var(--text);
    margin-bottom: 3px;
}

.info-item-label svg {
    color: var(--text-dim);
    flex-shrink: 0;
}

.info-item p {
    margin: 0;
    font-size: 14px;
    color: var(--text-muted);
    line-height: 1.5;
}

.info-page-title {
    font-size: 18px;
    font-weight: 600;
    color: var(--text);
    margin: 0 0 16px;
}

/* ── Info Modal ────────────────────────────────────────────────── */

.info-frame {
    display: none;
    position: fixed;
    top: 40%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 420px;
    background-color: var(--surface);
    color: var(--text);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    z-index: 1001;
    padding: 16px 20px;
    cursor: pointer;
    transition: background-color var(--transition);
}

.overlay {
    display: none;
    position: fixed;
    inset: 0;
    background-color: rgba(0, 0, 0, 0.4);
    z-index: 1000;
    cursor: pointer;
}

.info-content {
    font-size: 15px;
    line-height: 1.6;
    color: var(--text);
}

.info-content p {
    font-size: 15px;
    color: var(--text);
}

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

/* ── Login ─────────────────────────────────────────────────────── */

.login-container {
    width: 320px;
    margin: 24px auto;
    background-color: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 24px 28px;
    text-align: center;
    transition: background-color var(--transition), border-color var(--transition);
}

.login-title {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    color: var(--text);
    margin: 0 0 20px;
    font-size: 18px;
    font-weight: 600;
}

.login-success {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
    padding: 8px 0;
}

.login-success-icon {
    color: #16a34a;
}

.login-success-label {
    font-size: 16px;
    font-weight: 500;
    color: var(--text);
    margin: 0;
}

.login-container form {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.login-container form label {
    text-align: left;
    font-size: 13px;
    font-weight: 500;
    color: var(--text-muted);
}

.login-container form input[type="text"],
.login-container form input[type="password"] {
    padding: 8px 10px;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    background-color: var(--surface-alt);
    color: var(--text);
    font-size: 14px;
    transition: border-color var(--transition), background-color var(--transition);
}

.login-container form input[type="text"]:focus,
.login-container form input[type="password"]:focus {
    outline: none;
    border-color: var(--primary);
}

.login-container form input[type="submit"] {
    padding: 9px;
    margin-top: 4px;
    background-color: var(--primary);
    color: #fff;
    border: none;
    border-radius: var(--radius);
    cursor: pointer;
    font-size: 14px;
    font-weight: 500;
    transition: background-color var(--transition);
}

.login-container form input[type="submit"]:hover {
    background-color: var(--primary-hover);
}

.error-message {
    color: #dc2626;
    font-size: 13px;
    margin-top: 10px;
}

/* ── Buttons ───────────────────────────────────────────────────── */

.button-container {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 8px;
    margin: 0 auto 16px;
}

.button {
    display: inline-block;
    padding: 8px 18px;
    background-color: var(--primary);
    color: #fff;
    border: none;
    font-size: 14px;
    font-weight: 500;
    border-radius: var(--radius);
    cursor: pointer;
    transition: background-color var(--transition);
}

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

/* ── Client Info ───────────────────────────────────────────────── */

.clientinfo-container {
    background-color: var(--surface);
    width: min(800px, 95vw);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    margin: 0 auto;
    padding: 32px;
    transition: background-color var(--transition), border-color var(--transition);
}

.clientinfo-container h1 {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    margin: 0 0 20px;
    font-size: 18px;
    font-weight: 600;
    color: var(--text);
}

.clientinfo-table {
    width: 100%;
    border-collapse: collapse;
}

.clientinfo-table th,
.clientinfo-table td {
    padding: 10px 12px;
    text-align: left;
    word-break: break-all;
    overflow-wrap: break-word;
    color: var(--text);
}

.clientinfo-table th {
    color: var(--text-muted);
    width: 22%;
    vertical-align: top;
    font-weight: 600;
    font-size: 12px;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.clientinfo-table tr:not(:first-child) th,
.clientinfo-table tr:not(:first-child) td {
    border-top: 1px solid var(--border);
}

.copy-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 20px;
    height: 20px;
    border: none;
    background: transparent;
    color: var(--text-dim);
    cursor: pointer;
    border-radius: 3px;
    vertical-align: middle;
    margin-left: 6px;
    padding: 0;
    opacity: 0;
    transition: opacity var(--transition), color var(--transition);
    flex-shrink: 0;
}

tr:hover .copy-btn {
    opacity: 1;
}

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

.copy-btn.copied {
    color: #16a34a;
    opacity: 1;
}

/* ── Header Table ──────────────────────────────────────────────── */

.clientheader-container {
    background-color: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    width: min(900px, 95vw);
    margin: 0 auto;
    padding: 32px;
    transition: background-color var(--transition), border-color var(--transition);
}

.clientheader-container h1 {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    margin: 0 0 20px;
    font-size: 18px;
    font-weight: 600;
    color: var(--text);
}

.clientheader-table {
    width: 100%;
    border-collapse: collapse;
}

.clientheader-table th,
.clientheader-table td {
    padding: 9px 12px;
    word-break: break-all;
    overflow-wrap: break-word;
    font-size: 14px;
    color: var(--text);
}

.clientheader-table th {
    color: var(--text-muted);
    width: 30%;
    vertical-align: top;
    text-align: left;
    font-weight: 600;
    font-size: 12px;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.clientheader-table tr:not(:first-child) th,
.clientheader-table tr:not(:first-child) td {
    border-top: 1px solid var(--border);
}

/* ── Curl Details ──────────────────────────────────────────────── */

.curl-details {
    width: 500px;
    margin: 0 auto 16px;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    background: var(--surface);
    transition: background var(--transition), border-color var(--transition);
}

.curl-details summary {
    padding: 9px 14px;
    cursor: pointer;
    font-size: 13px;
    font-weight: 500;
    color: var(--text-muted);
    display: flex;
    align-items: center;
    justify-content: space-between;
    list-style: none;
    user-select: none;
}

.curl-details summary::-webkit-details-marker { display: none; }

.curl-details summary::after {
    content: '›';
    display: inline-block;
    font-size: 18px;
    line-height: 1;
    transition: transform var(--transition);
}

.curl-details[open] summary::after {
    transform: rotate(90deg);
}

.curl-output {
    border-top: 1px solid var(--border);
    padding: 12px 14px;
    font-family: ui-monospace, 'SF Mono', 'Cascadia Code', 'Fira Code', monospace;
    font-size: 12px;
    line-height: 1.6;
    white-space: pre-wrap;
    word-break: break-all;
    margin: 0;
    max-height: 320px;
    overflow-y: auto;
    color: var(--text);
}

.curl-req  { color: #2563eb; }
.curl-res  { color: #16a34a; }
.curl-body { color: var(--text); }
.curl-meta { color: var(--text-dim); }

[data-theme="dark"] .curl-req { color: #60a5fa; }
[data-theme="dark"] .curl-res { color: #4ade80; }

/* ── Request / Frame ───────────────────────────────────────────── */

.request-info-container {
    width: min(500px, calc(100vw - 32px));
    min-height: 40px;
    margin: 0 auto 8px;
    padding: 8px 12px;
    border: 1px solid var(--border);
    background-color: var(--surface);
    color: var(--text-muted);
    display: flex;
    justify-content: center;
    align-items: center;
    flex-wrap: wrap;
    border-radius: var(--radius);
    font-size: 12px;
    font-family: ui-monospace, 'SF Mono', 'Cascadia Code', monospace;
    word-break: break-all;
    overflow-wrap: break-word;
    text-align: center;
    line-height: 1.5;
    transition: background-color var(--transition), border-color var(--transition);
}

.frame-container {
    width: 500px;
    margin: 0 auto 16px;
    border: 1px solid var(--border);
    background-color: var(--surface);
    border-radius: var(--radius);
    overflow: hidden;
    transition: background-color var(--transition), border-color var(--transition);
}

.frame {
    width: 100%;
    height: 375px;
    border: none;
    display: block;
}

.script-container {
    display: flex;
    justify-content: center;
    align-items: center;
}

/* ── Content / State Containers ────────────────────────────────── */

.content-container {
    width: 280px;
    margin: 48px auto;
    background-color: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 32px;
    text-align: center;
    transition: background-color var(--transition), border-color var(--transition);
}

.state-container {
    text-align: center;
    padding: 60px 20px;
}

.state-icon {
    font-size: 40px;
    margin-bottom: 12px;
}

.state-success {
    color: #16a34a;
}

.state-error {
    color: #dc2626;
}

.state-label {
    font-size: 16px;
    font-weight: 500;
    color: var(--text);
    margin: 0 0 12px;
}

.response-container {
    width: 280px;
    margin: 32px auto;
    padding: 20px;
    text-align: center;
}

body.response-page {
    background-color: #ffffff;
}

/* ── Rate ──────────────────────────────────────────────────────── */

.rate-container {
    display: flex;
    justify-content: center;
    align-items: center;
    flex-direction: column;
    gap: 16px;
    margin-bottom: 16px;
}

.input-container {
    display: flex;
    flex-direction: row;
    align-items: center;
    gap: 20px;
}

.input-item {
    display: flex;
    flex-direction: row;
    align-items: center;
    gap: 8px;
}

.input-item label {
    font-size: 13px;
    font-weight: 500;
    color: var(--text-muted);
}

.input-item input[type="number"] {
    width: 100px;
    padding: 7px 10px;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    background-color: var(--surface);
    color: var(--text);
    font-size: 14px;
    transition: border-color var(--transition), background-color var(--transition);
}

.input-item input[type="number"]:focus {
    outline: none;
    border-color: var(--primary);
}

#startRateButton {
    padding: 8px 16px;
    background-color: var(--primary);
    color: #fff;
    border: none;
    border-radius: var(--radius);
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: background-color var(--transition);
}

#startRateButton:hover {
    background-color: var(--primary-hover);
}

/* ── Nav Toggle (hamburger) ────────────────────────────────────── */

.nav-toggle {
    display: none;
    width: 36px;
    height: 36px;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    background: transparent;
    color: var(--text-muted);
    cursor: pointer;
    align-items: center;
    justify-content: center;
    transition: background-color var(--transition), color var(--transition), border-color var(--transition);
}

.nav-toggle:hover {
    background-color: var(--surface-alt);
    color: var(--text);
    border-color: var(--text-muted);
}

/* ── Touch devices: always show copy buttons ───────────────────── */

@media (hover: none) {
    .copy-btn { opacity: 1; }
}

/* ── Mobile (≤768px) ───────────────────────────────────────────── */

@media (max-width: 768px) {

    /* Header: make room for hamburger */
    .site-header {
        grid-template-columns: 1fr auto auto;
        gap: 8px;
    }

    /* Nav: collapse to fixed dropdown below header */
    .site-nav {
        display: none;
        position: fixed;
        top: 52px;
        left: 0;
        right: 0;
        background-color: var(--nav-bg);
        border-bottom: 1px solid var(--border);
        z-index: 99;
    }

    .site-header.nav-open .site-nav {
        display: block;
    }

    .menu {
        flex-direction: column;
        gap: 0;
        padding: 6px 0;
    }

    .menu a {
        display: block;
        padding: 11px 20px;
        border-radius: 0;
    }

    .nav-sep {
        width: auto;
        height: 1px;
        margin: 4px 16px;
    }

    /* Show hamburger button */
    .nav-toggle {
        display: flex;
    }

    /* Home grid: fluid 2-column */
    .home-grid {
        width: calc(100vw - 32px);
        grid-template-columns: repeat(2, 1fr);
    }

    /* Frame / curl / request containers */
    .frame-container,
    .request-info-container,
    .curl-details {
        width: calc(100vw - 32px);
        max-width: 500px;
    }

    /* Info modal */
    .info-frame {
        width: calc(100vw - 32px);
        max-width: 420px;
    }

    /* Login */
    .login-container {
        width: calc(100vw - 32px);
        max-width: 320px;
    }

    /* Client / Header containers */
    .clientinfo-container,
    .clientheader-container {
        padding: 20px 16px;
    }

    /* About / info page */
    .info-page-container {
        width: calc(100vw - 32px);
        max-width: 640px;
    }

    /* Rate: stack inputs vertically */
    .input-container {
        flex-direction: column;
        gap: 12px;
        align-items: center;
    }

    /* Prevent iOS auto-zoom on input focus (triggered when font-size < 16px) */
    .input-item input[type="number"],
    .login-container form input[type="text"],
    .login-container form input[type="password"] {
        font-size: 16px;
    }

    /* Touch targets */
    .button,
    .info-button {
        min-height: 44px;
        padding-top: 10px;
        padding-bottom: 10px;
    }
}

/* ── Small phones (≤480px) ─────────────────────────────────────── */

@media (max-width: 480px) {

    /* Home grid: single column */
    .home-grid {
        grid-template-columns: 1fr;
    }

    /* Client/Header table: tighten label column */
    .clientinfo-table th,
    .clientheader-table th {
        width: 35%;
        font-size: 11px;
    }

    .clientinfo-container,
    .clientheader-container {
        padding: 16px 12px;
    }
}