/* ============================================================
   مبدل فونت کاتب — تم «میز نقشه‌کشی»
   پالت: کاغذ روشن + آبی مهندسی + نارنجی قلم فنی
   فونت: وزیرمتن (فارسی) + JetBrains Mono (کدهای خروجی)
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=Vazirmatn:wght@400;500;600;700;800&family=JetBrains+Mono:wght@400;500;600&display=swap');

:root {
    /* پالت اصلی: کاغذ نقشه‌کشی */
    --paper: #FAF9F5;
    --paper-dim: #F1EFE7;
    --panel: #FFFFFF;
    --ink: #1E2A32;
    --muted: #6B7A82;
    --line: #DCE2E0;
    --grid-line: rgba(15, 92, 140, 0.07);
    /* آبی نقشه‌کشی (برند) */
    --blue: #0F5C8C;
    --blue-deep: #0A3D5C;
    --blue-tint: #E7F1F7;
    /* نارنجی قلم فنی (اکشن/برجسته) */
    --accent: #E1631F;
    --accent-dark: #B94E15;
    --accent-tint: #FDEEE3;
    /* سبز تأیید */
    --ok: #1F8A5F;
    --ok-tint: #E4F5EC;
    /* قرمز خطا */
    --danger: #C23B3B;
    --danger-tint: #FBEAEA;
    --mono: 'JetBrains Mono','Courier New', monospace;
    --sans: 'Vazirmatn', Tahoma, sans-serif;
    --radius-sm: 8px;
    --radius-md: 14px;
    --radius-lg: 20px;
    --shadow-sm: 0 1px 2px rgba(15,44,64,.06), 0 1px 1px rgba(15,44,64,.04);
    --shadow-md: 0 8px 24px -8px rgba(15,44,64,.18);
    --shadow-lift: 0 14px 34px -12px rgba(15,44,64,.28);
}

* {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    background: linear-gradient(var(--grid-line) 1px, transparent 1px), linear-gradient(90deg, var(--grid-line) 1px, transparent 1px), var(--paper);
    background-size: 28px 28px, 28px 28px, auto;
    color: var(--ink);
    font-family: var(--sans);
    font-size: 15.5px;
    line-height: 1.65;
    -webkit-font-smoothing: antialiased;
}

.wrap {
    max-width: 960px;
    margin: 0 auto;
    padding: 0 18px;
}

a {
    color: var(--blue);
    text-decoration: none;
    transition: color .15s ease;
}

    a:hover {
        color: var(--accent);
        text-decoration: underline;
    }

:focus-visible {
    outline: 2.5px solid var(--accent);
    outline-offset: 2px;
    border-radius: 4px;
}

::selection {
    background: var(--accent-tint);
    color: var(--accent-dark);
}

/* ---------------- Header ---------------- */
.site-header {
    position: sticky;
    top: 0;
    z-index: 50;
    background: rgba(250,249,245,.86);
    backdrop-filter: blur(10px);
    border-bottom: 2px solid var(--blue-deep);
}

.header-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 14px 0;
}

.brand {
    font-size: 19px;
    font-weight: 800;
    color: var(--blue-deep);
    letter-spacing: -.2px;
    display: flex;
    align-items: center;
    gap: 8px;
}

    .brand::before {
        content: '';
        width: 11px;
        height: 11px;
        background: var(--accent);
        border-radius: 3px;
        transform: rotate(45deg);
        box-shadow: 0 0 0 3px var(--accent-tint);
        flex-shrink: 0;
    }

    .brand:hover {
        color: var(--blue-deep);
        text-decoration: none;
    }

.site-header nav {
    display: flex;
    gap: 18px;
    align-items: center;
    font-size: 14px;
    font-weight: 600;
}

    .site-header nav a {
        color: var(--blue-deep);
    }

.inline-form {
    display: inline;
}

.link-btn {
    background: none;
    border: none;
    color: var(--muted);
    cursor: pointer;
    font-size: 14px;
    font-weight: 600;
    padding: 0;
    font-family: inherit;
}

    .link-btn:hover {
        color: var(--danger);
    }

main.wrap {
    padding: 38px 18px 70px;
}

/* ---------------- Hero / ad text ---------------- */
.hero {
    margin-bottom: 8px;
}

    .hero h1 {
        font-size: clamp(22px, 4vw, 30px);
        font-weight: 800;
        margin: 0 0 14px;
        color: var(--blue-deep);
        letter-spacing: -.3px;
        position: relative;
        padding-inline-start: 16px;
    }

        .hero h1::before {
            content: '';
            position: absolute;
            inset-inline-start: 0;
            top: 4px;
            bottom: 4px;
            width: 5px;
            border-radius: 4px;
            background: linear-gradient(var(--accent), var(--blue));
        }

.ad-text {
    color: var(--ink);
    font-size: 14.5px;
    line-height: 2;
    background: var(--panel);
    border: 1px solid var(--line);
    border-radius: var(--radius-md);
    padding: 18px 20px;
    box-shadow: var(--shadow-sm);
    position: relative;
    overflow: hidden;
}

    .ad-text::before {
        content: 'راهنما';
        position: absolute;
        inset-inline-end: 0;
        top: 0;
        background: var(--blue);
        color: #fff;
        font-size: 11px;
        font-weight: 700;
        padding: 4px 14px;
        border-end-start-radius: 10px;
        letter-spacing: .3px;
    }

    .ad-text strong {
        color: var(--accent-dark);
        font-weight: 700;
    }

/* ---------------- Converter box ---------------- */
.converter-box {
    margin-top: 26px;
}

textarea {
    width: 100%;
    min-height: 120px;
    background: var(--panel);
    border: 1.5px solid var(--line);
    border-radius: var(--radius-md);
    color: var(--ink);
    font-size: 19px;
    padding: 16px;
    resize: vertical;
    font-family: var(--sans);
    box-shadow: var(--shadow-sm);
    transition: border-color .15s ease, box-shadow .15s ease;
}

    textarea:focus {
        outline: none;
        border-color: var(--blue);
        box-shadow: 0 0 0 4px var(--blue-tint);
    }

    textarea::placeholder {
        color: #a8b3b8;
    }

.row {
    display: flex;
    gap: 12px;
    margin-top: 14px;
    align-items: center;
    flex-wrap: wrap;
}

button, input[type="submit"] {
    background: linear-gradient(180deg, var(--accent) 0%, var(--accent-dark) 100%);
    color: #fff;
    border: none;
    border-radius: var(--radius-sm);
    padding: 11px 24px;
    font-size: 14.5px;
    font-weight: 700;
    font-family: inherit;
    cursor: pointer;
    box-shadow: 0 2px 0 var(--accent-dark), var(--shadow-sm);
    transition: transform .12s ease, box-shadow .12s ease, filter .12s ease;
}

    button:hover {
        filter: brightness(1.05);
        transform: translateY(-1px);
    }

    button:active {
        transform: translateY(1px);
        box-shadow: 0 1px 0 var(--accent-dark);
    }

.hint {
    color: var(--muted);
    font-size: 12.5px;
}

.switch-label {
    display: flex;
    gap: 9px;
    align-items: center;
    font-size: 14px;
    font-weight: 600;
    color: var(--blue-deep);
    cursor: pointer;
    background: var(--blue-tint);
    padding: 8px 14px;
    border-radius: 100px;
    border: 1px solid transparent;
    transition: border-color .15s ease;
}

    .switch-label:hover {
        border-color: var(--blue);
    }

    .switch-label input[type="checkbox"] {
        width: 16px;
        height: 16px;
        accent-color: var(--blue);
        cursor: pointer;
    }

.output-box {
    margin-top: 20px;
    border: 1.5px solid var(--blue);
    border-radius: var(--radius-md);
    background: var(--blue-deep);
    padding: 18px 20px;
    box-shadow: var(--shadow-md);
    animation: reveal .25s ease;
}

@keyframes reveal {
    from {
        opacity: 0;
        transform: translateY(6px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.output-label-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 12px;
}

.output-label {
    font-size: 11.5px;
    color: #BFD9E8;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: .6px;
}

.copy-btn {
    background: transparent;
    color: #fff;
    border: 1.5px solid rgba(255,255,255,.4);
    border-radius: var(--radius-sm);
    padding: 6px 16px;
    font-size: 12.5px;
    font-weight: 700;
    cursor: pointer;
    font-family: inherit;
    transition: background .15s ease, border-color .15s ease;
}

    .copy-btn:hover {
        background: rgba(255,255,255,.12);
        border-color: #fff;
    }

    .copy-btn.copied {
        background: var(--ok);
        color: #fff;
        border-color: var(--ok);
    }

.output-string {
    font-family: var(--mono);
    direction: ltr;
    text-align: left;
    font-size: 16px;
    color: #FFD9B8;
    word-break: break-all;
    line-height: 1.8;
    user-select: all;
}

.error-box {
    margin-top: 16px;
    color: var(--danger);
    background: var(--danger-tint);
    border: 1px solid #EFC3C3;
    border-radius: var(--radius-sm);
    padding: 11px 16px;
    font-size: 13.5px;
    font-weight: 600;
}

/* ---------------- How-to ---------------- */
.how-to {
    margin-top: 40px;
    background: var(--panel);
    border: 1px solid var(--line);
    border-radius: var(--radius-md);
    padding: 22px 24px;
    box-shadow: var(--shadow-sm);
}

    .how-to h2 {
        color: var(--blue-deep);
        font-size: 16.5px;
        font-weight: 800;
        margin: 0 0 14px;
    }

    .how-to ol {
        margin: 0;
        padding-inline-start: 20px;
        color: var(--ink);
        font-size: 14.5px;
        line-height: 2.1;
    }

    .how-to li::marker {
        color: var(--accent);
        font-weight: 700;
    }

/* ---------------- Footer ---------------- */
.site-footer {
    border-top: 1px solid var(--line);
    color: var(--muted);
    font-size: 12.5px;
    padding: 20px 0;
    margin-top: 50px;
    text-align: center;
}

/* ---------------- Login ---------------- */
.login-box {
    max-width: 380px;
    margin: 70px auto;
    background: var(--panel);
    border: 1px solid var(--line);
    border-radius: var(--radius-lg);
    padding: 32px 28px;
    box-shadow: var(--shadow-lift);
}

    .login-box h1 {
        font-size: 19px;
        color: var(--blue-deep);
        margin: 0 0 20px;
        text-align: center;
        font-weight: 800;
    }

    .login-box form {
        display: flex;
        flex-direction: column;
        gap: 6px;
    }

    .login-box label {
        font-size: 13px;
        font-weight: 700;
        color: var(--muted);
        margin-top: 8px;
    }

    .login-box input {
        background: var(--paper-dim);
        border: 1.5px solid var(--line);
        border-radius: var(--radius-sm);
        color: var(--ink);
        padding: 11px 12px;
        font-size: 14.5px;
        font-family: inherit;
        transition: border-color .15s ease;
    }

        .login-box input:focus {
            outline: none;
            border-color: var(--blue);
            background: #fff;
        }

    .login-box button {
        margin-top: 16px;
        width: 100%;
    }

/* ---------------- Admin ---------------- */
.admin-stats {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
    margin-bottom: 28px;
}

.stat-card {
    background: var(--panel);
    border: 1px solid var(--line);
    border-radius: var(--radius-md);
    padding: 16px 22px;
    min-width: 150px;
    box-shadow: var(--shadow-sm);
    border-top: 3px solid var(--blue);
}

    .stat-card.wide {
        flex: 1;
        min-width: 280px;
        border-top-color: var(--accent);
    }

.stat-num {
    font-size: 28px;
    font-weight: 800;
    color: var(--blue-deep);
    letter-spacing: -.5px;
}

.stat-label {
    color: var(--muted);
    font-size: 12px;
    margin-top: 4px;
    font-weight: 600;
}

.os-list {
    list-style: none;
    padding: 0;
    margin: 10px 0 0;
    font-size: 13.5px;
    color: var(--ink);
    display: flex;
    flex-direction: column;
    gap: 6px;
}

    .os-list li {
        display: flex;
        justify-content: space-between;
        border-bottom: 1px dashed var(--line);
        padding-bottom: 6px;
    }

.admin-log {
    background: var(--panel);
    border: 1px solid var(--line);
    border-radius: var(--radius-md);
    padding: 20px;
    box-shadow: var(--shadow-sm);
}

    .admin-log form.row {
        margin-top: 0;
    }

    .admin-log input[type="text"] {
        background: var(--paper-dim);
        border: 1.5px solid var(--line);
        border-radius: var(--radius-sm);
        color: var(--ink);
        padding: 10px 14px;
        flex: 1;
        font-family: inherit;
        font-size: 14px;
        min-width: 180px;
    }

        .admin-log input[type="text"]:focus {
            outline: none;
            border-color: var(--blue);
            background: #fff;
        }

.log-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 12.5px;
    margin-top: 18px;
    display: block;
    overflow-x: auto;
    white-space: nowrap;
    border-radius: var(--radius-sm);
}

    .log-table th, .log-table td {
        padding: 10px 12px;
        text-align: center;
        border-bottom: 1px solid var(--line);
    }

    .log-table th {
        color: #fff;
        background: var(--blue-deep);
        font-weight: 700;
        font-size: 11px;
        text-transform: uppercase;
        letter-spacing: .4px;
        position: sticky;
        top: 0;
    }

    .log-table tbody tr:hover {
        background: var(--blue-tint);
    }

    .log-table tbody tr:nth-child(even) {
        background: var(--paper-dim);
    }

        .log-table tbody tr:nth-child(even):hover {
            background: var(--blue-tint);
        }

.truncate {
    max-width: 170px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.mono {
    font-family: var(--mono);
    direction: ltr;
}

.pagination {
    display: flex;
    gap: 6px;
    margin-top: 18px;
    flex-wrap: wrap;
}

    .pagination a {
        padding: 7px 13px;
        border: 1.5px solid var(--line);
        border-radius: var(--radius-sm);
        color: var(--blue-deep);
        font-weight: 700;
        font-size: 13px;
        transition: .15s ease;
    }

        .pagination a:hover {
            border-color: var(--blue);
            text-decoration: none;
        }

        .pagination a.active {
            background: var(--blue);
            color: #fff;
            border-color: var(--blue);
        }

/* ---------------- Reduced motion ---------------- */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: .001ms !important;
        transition-duration: .001ms !important;
    }

    html {
        scroll-behavior: auto;
    }
}

/* ---------------- Responsive ---------------- */
@media (max-width:640px) {
    body {
        font-size: 14.5px;
        background-size: 20px 20px, 20px 20px, auto;
    }

    main.wrap {
        padding: 26px 14px 50px;
    }

    .header-inner {
        padding: 12px 0;
    }

    .brand {
        font-size: 16.5px;
    }

    .site-header nav {
        gap: 12px;
        font-size: 13px;
    }

    .hero h1 {
        font-size: 20px;
        padding-inline-start: 13px;
    }

    .ad-text {
        font-size: 13.5px;
        padding: 16px 16px 20px;
        line-height: 1.9;
    }

    textarea {
        font-size: 17px;
        padding: 13px;
        min-height: 100px;
    }

    .row {
        gap: 9px;
    }

    button, input[type="submit"] {
        width: 100%;
        padding: 12px 20px;
    }

    .switch-label {
        width: 100%;
        justify-content: center;
    }

    .output-string {
        font-size: 14px;
    }

    .how-to {
        padding: 18px 16px;
    }

    .admin-stats {
        gap: 10px;
    }

    .stat-card {
        min-width: 0;
        flex: 1 1 45%;
        padding: 13px 14px;
    }

        .stat-card.wide {
            flex: 1 1 100%;
        }

    .stat-num {
        font-size: 22px;
    }

    .admin-log {
        padding: 14px;
    }

        .admin-log form.row {
            flex-direction: column;
            align-items: stretch;
        }

        .admin-log input[type="text"] {
            width: 100%;
        }

    .login-box {
        margin: 36px auto;
        padding: 26px 20px;
    }
}

@media (max-width:400px) {
    .stat-card {
        flex: 1 1 100%;
    }
}