/**
 * _sf_styles.css — shared CSS for Solution Finders public pages
 * Deploy: /public/solution_finders/_sf_styles.css
 * Included via <link> in solution_room_public_include.php and room_signals.php
 */

/* ── Tokens ── */
:root {
    --bg:       #f5f3ef;
    --white:    #ffffff;
    --ink:      #0a0f1e;
    --ink2:     #2d3348;
    --ink3:     #5a6070;
    --ink4:     #8a8f9e;
    --blue:     #1a3fff;
    --blue-dim: rgba(26,63,255,.08);
    --green:    #00b67a;
    --amber:    #f59e0b;
    --red:      #ef4444;
    --border:   rgba(10,15,30,.1);
    --border2:  rgba(10,15,30,.05);
    --display:  'Sora', sans-serif;
    --sans:     'DM Sans', sans-serif;
    --mono:     'DM Mono', monospace;
    --radius:   14px;
    --radius-sm:8px;
    --shadow:   0 2px 12px rgba(10,15,30,.07);
    --shadow-lg:0 8px 32px rgba(10,15,30,.12);
}

/* ── Reset ── */
*,*::before,*::after { box-sizing: border-box; margin: 0; padding: 0; }
html { -webkit-font-smoothing: antialiased; scroll-behavior: smooth; }
body { font-family: var(--sans); background: var(--bg); color: var(--ink); min-height: 100vh; }
a { color: inherit; text-decoration: none; }

/* ── Nav ── */
.sf-nav {
    background: rgba(245,243,239,.92);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border);
    position: sticky; top: 0; z-index: 100;
}
.sf-nav-inner {
    max-width: 1100px; margin: 0 auto;
    padding: 0 clamp(16px,3vw,48px);
    height: 58px; display: flex; align-items: center;
    justify-content: space-between; gap: 16px;
}
.sf-nav-brand {
    display: flex; align-items: center; gap: 10px;
    font-family: var(--display); font-weight: 900; font-size: 17px;
    color: var(--ink); letter-spacing: -.03em; flex-shrink: 0;
}
.sf-nav-brand-dot {
    width: 28px; height: 28px; border-radius: 8px;
    background: var(--blue); display: flex; align-items: center;
    justify-content: center; font-size: 14px; color: #fff; font-weight: 900;
}
.sf-nav-links {
    display: flex; gap: 2px; align-items: center; flex: 1; justify-content: center;
}
.sf-nav-link {
    font-size: 13px; font-weight: 600; color: var(--ink3);
    padding: 6px 12px; border-radius: var(--radius-sm);
    transition: color .15s, background .15s;
    white-space: nowrap;
}
.sf-nav-link:hover { color: var(--ink); background: var(--blue-dim); }
.sf-nav-link.active { color: var(--blue); background: var(--blue-dim); }
.sf-nav-link-open {
    color: var(--blue); font-weight: 700;
}
.sf-nav-right { display: flex; align-items: center; gap: 8px; flex-shrink: 0; }
.sf-nav-cta {
    font-size: 13px; font-weight: 700; color: #fff;
    background: var(--blue); padding: 7px 16px;
    border-radius: var(--radius-sm); transition: background .15s; white-space: nowrap;
}
.sf-nav-cta:hover { background: #0f2ddd; }
.sf-nav-cta-outline {
    background: transparent; color: var(--ink2);
    border: 1.5px solid var(--border);
}
.sf-nav-cta-outline:hover { border-color: var(--blue); color: var(--blue); }

@media(max-width: 640px) {
    .sf-nav-links { display: none; }
    .sf-nav-link-open { display: none; }
}

/* ── Layout ── */
.sf-wrap { max-width: 1000px; margin: 0 auto; padding: 0 clamp(16px,3vw,40px); }
.sf-page  { padding: 36px 0 80px; }

/* ── Cards ── */
.sf-card {
    background: var(--white); border: 1px solid var(--border);
    border-radius: var(--radius); padding: 24px 28px; margin-bottom: 20px;
}
.sf-card-label {
    font-size: 11px; font-weight: 700; letter-spacing: .1em;
    text-transform: uppercase; color: var(--ink4);
    margin-bottom: 14px; display: flex; align-items: center; gap: 8px;
}
.sf-card-label::before {
    content: ''; width: 16px; height: 2px; background: var(--blue); display: block;
}

/* ── Buttons ── */
.sf-btn {
    display: inline-flex; align-items: center; justify-content: center;
    gap: 7px; padding: 11px 18px; border-radius: var(--radius-sm);
    font-size: 14px; font-weight: 700; border: 1.5px solid transparent;
    cursor: pointer; font-family: var(--sans); text-decoration: none;
    transition: all .15s; white-space: nowrap;
}
.sf-btn-blue   { background: var(--blue); color: #fff; border-color: var(--blue); }
.sf-btn-blue:hover { background: #0f2ddd; }
.sf-btn-green  { background: var(--green); color: #fff; border-color: var(--green); }
.sf-btn-green:hover { background: #00956a; }
.sf-btn-outline { background: var(--white); color: var(--ink2); border-color: var(--border); }
.sf-btn-outline:hover { border-color: var(--blue); color: var(--blue); }
.sf-btn-ghost  { background: transparent; color: var(--ink3); border-color: var(--border); }
.sf-btn-ghost:hover  { color: var(--ink); border-color: rgba(26,63,255,.3); }
.sf-btn-full   { width: 100%; }
.sf-btn-sm     { padding: 7px 14px; font-size: 13px; }
.sf-btn-watching { background: rgba(0,182,122,.08); color: #047857; border-color: rgba(0,182,122,.3); }

/* ── Alerts ── */
.sf-alert {
    padding: 12px 16px; border-radius: var(--radius-sm);
    font-size: 13px; line-height: 1.55; border: 1px solid transparent; margin-bottom: 12px;
}
.sf-alert-info    { background: var(--blue-dim); color: var(--blue); border-color: rgba(26,63,255,.2); }
.sf-alert-success { background: rgba(0,182,122,.08); color: #047857; border-color: rgba(0,182,122,.25); }
.sf-alert-warn    { background: rgba(245,158,11,.08); color: #92400e; border-color: rgba(245,158,11,.25); }
.sf-alert-danger  { background: rgba(239,68,68,.07); color: #b91c1c; border-color: rgba(239,68,68,.2); }

/* ── Form elements ── */
.sf-label {
    font-size: 11px; font-weight: 700; letter-spacing: .07em;
    text-transform: uppercase; color: var(--ink3); margin-bottom: 6px; display: block;
}
.sf-textarea {
    width: 100%; border: 1.5px solid var(--border); border-radius: var(--radius-sm);
    padding: 10px 12px; font-family: var(--sans); font-size: 13px;
    color: var(--ink); background: var(--white); resize: vertical; min-height: 90px;
}
.sf-textarea:focus { outline: none; border-color: rgba(26,63,255,.4); }
.sf-textarea::placeholder { color: var(--ink4); }
.sf-input {
    width: 100%; border: 1.5px solid var(--border); border-radius: var(--radius-sm);
    padding: 9px 12px; font-family: var(--sans); font-size: 13px;
    color: var(--ink); background: var(--white);
}
.sf-input:focus { outline: none; border-color: rgba(26,63,255,.4); }

/* ── Toast ── */
.sf-toast {
    position: fixed; bottom: 24px; right: 24px; z-index: 999;
    padding: 10px 18px; border-radius: 10px; font-size: 13px; font-weight: 600;
    opacity: 0; transform: translateY(6px); transition: all .2s;
    pointer-events: none; max-width: 300px;
}
.sf-toast.show { opacity: 1; transform: none; }
.sf-toast.ok  { background: var(--ink); color: #fff; }
.sf-toast.err { background: var(--red); color: #fff; }