/* =========================================================
   PixelMark — "Ink Stamp on Paper" Light Design System
   ========================================================= */

:root {
    --bg: #FAFAF9;
    --bg-raised: #FFFFFF;
    --bg-raised-2: #F3F4F6;
    --hairline: #E2E4E9;
    --ink: #12151C;
    --ink-dim: #5B6270;
    --ink-faint: #9AA1AC;
    --accent: #1E3FE0;
    --accent-bright: #3355FF;
    --accent-ink: #0A1F8F;
    --gold: #B7791F;
    --gold-bg: #FEF3D9;
    --success: #157A4A;
    --success-bg: #E6F6EE;
    --danger: #C0362C;
    --radius-sm: 6px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --shadow-card: 0 1px 2px rgba(18,21,28,0.04), 0 4px 14px rgba(18,21,28,0.05);
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }

body {
    background: var(--bg);
    color: var(--ink);
    font-family: 'IBM Plex Sans', -apple-system, BlinkMacSystemFont, sans-serif;
    line-height: 1.5;
    -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4, .display {
    font-family: 'Space Grotesk', sans-serif;
    font-weight: 600;
    letter-spacing: -0.01em;
    color: var(--ink);
}

.mono { font-family: 'IBM Plex Mono', monospace; }
a { color: inherit; text-decoration: none; }
.wrap { max-width: 1080px; margin: 0 auto; padding: 0 28px; }

/* ---------- Nav ---------- */
nav.site-nav {
    position: sticky; top: 0; z-index: 50;
    background: rgba(250,250,249,0.92); backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--hairline);
}
.nav-inner {
    max-width: 1080px; margin: 0 auto; padding: 16px 28px;
    display: flex; align-items: center; justify-content: space-between;
}
.logo { display: flex; align-items: center; gap: 10px; font-family: 'Space Grotesk'; font-weight: 700; font-size: 18px; color: var(--ink); }
.logo-mark {
    width: 28px; height: 28px; border-radius: 7px;
    background: var(--accent);
    display: flex; align-items: center; justify-content: center;
    font-size: 14px; color: #fff; font-weight: 700;
    transform: rotate(-6deg); flex-shrink: 0;
}
.nav-links { display: flex; align-items: center; gap: 22px; font-size: 14px; color: var(--ink-dim); }
.nav-links a:hover { color: var(--ink); }

/* ---------- Buttons ---------- */
.btn {
    display: inline-flex; align-items: center; justify-content: center; gap: 8px;
    padding: 11px 20px; border-radius: var(--radius-md); font-size: 14.5px; font-weight: 600;
    border: 1px solid transparent; cursor: pointer; font-family: inherit;
    transition: background 0.15s, border-color 0.15s, transform 0.1s;
}
.btn-primary { background: var(--accent); color: #fff; }
.btn-primary:hover { background: var(--accent-bright); }
.btn-primary:disabled { opacity: 0.5; cursor: not-allowed; }
.btn-ghost { border-color: var(--hairline); color: var(--ink); background: transparent; }
.btn-ghost:hover { border-color: var(--ink-dim); background: var(--bg-raised-2); }
.btn-secondary { background: var(--bg-raised-2); color: var(--ink); border-color: var(--hairline); }
.btn-secondary:hover { border-color: var(--ink-dim); }
.btn-block { width: 100%; }
.btn-lg { padding: 13px 22px; font-size: 15px; }

/* ---------- Cards ---------- */
.card {
    background: var(--bg-raised); border: 1px solid var(--hairline); border-radius: var(--radius-lg);
    padding: 24px; box-shadow: var(--shadow-card);
}

/* ---------- Status pill ---------- */
.status-pill {
    display: inline-flex; align-items: center; gap: 7px;
    padding: 6px 12px; border-radius: 20px; font-size: 12.5px; font-family: 'IBM Plex Mono';
    background: var(--bg-raised-2); border: 1px solid var(--hairline); color: var(--ink-dim);
}
.status-dot { width: 7px; height: 7px; border-radius: 50%; background: var(--ink-faint); }
.status-pill.status-online .status-dot { background: var(--success); }
.status-pill.status-online { color: var(--success); background: var(--success-bg); border-color: rgba(21,122,74,0.2); }

/* ---------- Form controls ---------- */
.form-group { margin-bottom: 18px; }
.form-group label {
    display: block; font-size: 13px; color: var(--ink-dim); margin-bottom: 7px; font-weight: 500;
}
.form-control {
    width: 100%; padding: 10px 12px; border-radius: var(--radius-sm);
    border: 1px solid var(--hairline); background: var(--bg-raised); color: var(--ink);
    font-size: 14px; font-family: inherit;
}
.form-control:focus { outline: none; border-color: var(--accent); box-shadow: 0 0 0 3px rgba(30,63,224,0.12); }
select.form-control { cursor: pointer; }

.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }

.color-picker-wrapper { display: flex; gap: 8px; align-items: center; }
.color-picker { width: 42px; height: 38px; border-radius: var(--radius-sm); border: 1px solid var(--hairline); background: none; padding: 2px; cursor: pointer; }
.hex-input { flex: 1; font-family: 'IBM Plex Mono'; font-size: 13px; }

.slider-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 7px; }
.slider-header label { margin-bottom: 0; }
.slider-value { font-family: 'IBM Plex Mono'; font-size: 12px; color: var(--gold); }
.slider {
    width: 100%; height: 4px; border-radius: 2px; background: var(--hairline);
    appearance: none; cursor: pointer;
}
.slider::-webkit-slider-thumb {
    appearance: none; width: 16px; height: 16px; border-radius: 50%;
    background: var(--accent); cursor: pointer; border: 2px solid #fff; box-shadow: 0 1px 4px rgba(0,0,0,0.25);
}
.slider::-moz-range-thumb {
    width: 16px; height: 16px; border-radius: 50%; background: var(--accent);
    cursor: pointer; border: 2px solid #fff;
}

.file-input { font-size: 13px; color: var(--ink-dim); margin-bottom: 10px; }

.section-title {
    font-family: 'IBM Plex Mono'; font-size: 12px; color: var(--accent-ink);
    letter-spacing: 0.02em; margin-bottom: 14px;
    padding-bottom: 8px; border-bottom: 1px solid var(--hairline);
}
.form-section { margin-bottom: 28px; }

/* ---------- Toast ---------- */
.toast {
    position: fixed; bottom: 24px; left: 50%; transform: translateX(-50%) translateY(20px);
    background: var(--ink); border: 1px solid var(--ink); color: #fff;
    padding: 12px 20px; border-radius: var(--radius-md); font-size: 14px;
    opacity: 0; pointer-events: none; transition: opacity 0.25s, transform 0.25s;
    box-shadow: 0 10px 30px rgba(0,0,0,0.2); z-index: 100;
}
.toast.show { opacity: 1; transform: translateX(-50%) translateY(0); }

/* ---------- Footer ---------- */
footer.site-footer { padding: 40px 0; border-top: 1px solid var(--hairline); margin-top: 40px; }
.footer-inner { display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 16px; }
.footer-inner p { color: var(--ink-faint); font-size: 13px; }

/* ---------- Help link (shared) ---------- */
.help-link {
    display: inline-flex; align-items: center; gap: 6px; font-size: 13px;
    color: var(--accent-ink); background: var(--bg-raised-2); border: 1px solid var(--hairline);
    padding: 8px 14px; border-radius: 20px;
}
.help-link:hover { border-color: var(--accent); }

@media (max-width: 860px) {
    .nav-links a:not(.btn) { display: none; }
    .nav-inner { padding: 14px 20px; }
    .btn { padding: 10px 16px; font-size: 13.5px; white-space: nowrap; }
    .wrap { padding: 0 20px; }
    .grid-2 { grid-template-columns: 1fr; }
}