/* ============================================================
   mailsign — Design system partagé (front public + admin)
   Style premium "SaaS clair" (réf. mysignature.io) :
   clair, aéré, grandes typos, coins très arrondis, ombres
   douces multi-couches, accents teintés par tenant (--accent).
   Les noms de classes sont stables (markup/JS inchangés).
   ============================================================ */
:root
{
    --accent: #1F63DE;
    --accent-text: #FFFFFF;

    --ink: #111322;
    --ink-soft: #5A6076;
    --ink-faint: #8A90A6;

    --bg: #F4F6FD;
    --bg-2: #ECEFFb;
    --card: #FFFFFF;
    --line: #E7EAF5;
    --line-soft: #F0F2FA;

    --ok: #157A4B;
    --ok-bg: #E6F8EF;
    --err: #B4231A;
    --err-bg: #FFE9E6;

    --radius-xl: 28px;
    --radius: 20px;
    --radius-sm: 14px;
    --radius-xs: 10px;

    --shadow: 0 30px 60px -28px rgba(24, 36, 92, .42);
    --shadow-soft: 0 18px 40px -24px rgba(24, 36, 92, .30);
    --shadow-xs: 0 4px 14px -8px rgba(24, 36, 92, .26);

    --ring: 0 0 0 4px color-mix(in srgb, var(--accent) 22%, transparent);

    --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Arial, sans-serif;

    /* Surfaces teintées par l'accent du tenant */
    --accent-tint: color-mix(in srgb, var(--accent) 10%, #fff);
    --accent-tint-strong: color-mix(in srgb, var(--accent) 16%, #fff);
}

*
{
    box-sizing: border-box;
}

html, body
{
    margin: 0;
    padding: 0;
}

body
{
    font-family: var(--font);
    color: var(--ink);
    background:
        radial-gradient(1100px 520px at 100% -10%, color-mix(in srgb, var(--accent) 12%, transparent) 0%, transparent 60%),
        radial-gradient(900px 480px at -10% 0%, color-mix(in srgb, var(--accent) 9%, transparent) 0%, transparent 55%),
        var(--bg);
    background-attachment: fixed;
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    text-rendering: optimizeLegibility;
    min-height: 100vh;
}

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

h1, h2, h3
{
    letter-spacing: -.022em;
}

:focus-visible
{
    outline: none;
    box-shadow: var(--ring);
    border-radius: 6px;
}

/* ---------- Layout public ---------- */
.shell
{
    max-width: 1120px;
    margin: 0 auto;
    padding: 0 24px;
}

.topbar
{
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    padding: 22px 0;
}

.brand
{
    display: flex;
    align-items: center;
    gap: 12px;
    font-weight: 750;
    font-size: 19px;
    letter-spacing: -.02em;
}

.brand-badge
{
    width: 40px;
    height: 40px;
    border-radius: 13px;
    background: linear-gradient(140deg, color-mix(in srgb, var(--accent) 85%, #fff) 0%, var(--accent) 60%, color-mix(in srgb, var(--accent) 80%, #000) 100%);
    color: var(--accent-text);
    display: grid;
    place-items: center;
    font-weight: 800;
    font-size: 19px;
    box-shadow: var(--shadow-xs);
}

.brand-logo
{
    max-height: 40px;
    width: auto;
    display: block;
}

/* ---------- Hero ---------- */
.hero
{
    position: relative;
    overflow: hidden;
    border-radius: var(--radius-xl);
    padding: 76px 56px;
    margin: 16px 0 36px;
    color: #fff;
    background:
        radial-gradient(130% 150% at 0% 0%, color-mix(in srgb, var(--accent) 82%, #fff) 0%, transparent 55%),
        radial-gradient(130% 150% at 100% 100%, color-mix(in srgb, var(--accent) 72%, #000) 0%, transparent 52%),
        var(--accent);
    box-shadow: var(--shadow);
}

.hero::after
{
    content: "";
    position: absolute;
    inset: 0;
    background-image:
        radial-gradient(circle at 18% 28%, rgba(255,255,255,.20) 0, transparent 9%),
        radial-gradient(circle at 82% 18%, rgba(255,255,255,.13) 0, transparent 8%),
        radial-gradient(circle at 66% 82%, rgba(255,255,255,.11) 0, transparent 10%);
    pointer-events: none;
}

.hero h1
{
    position: relative;
    margin: 0 0 16px;
    font-size: clamp(32px, 5.2vw, 52px);
    line-height: 1.04;
    font-weight: 820;
}

.hero p
{
    position: relative;
    margin: 0;
    max-width: 580px;
    font-size: 18.5px;
    opacity: .94;
}

.hero-actions
{
    position: relative;
    margin-top: 30px;
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
}

.eyebrow
{
    position: relative;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 7px 15px;
    border-radius: 999px;
    background: rgba(255,255,255,.18);
    font-size: 13px;
    font-weight: 650;
    letter-spacing: .02em;
    margin-bottom: 20px;
    backdrop-filter: blur(6px);
}

/* ---------- Boutons ---------- */
.btn
{
    display: inline-flex;
    align-items: center;
    gap: 9px;
    border: 0;
    cursor: pointer;
    font-family: inherit;
    font-size: 15px;
    font-weight: 650;
    padding: 13px 24px;
    border-radius: 999px;
    transition: transform .14s ease, box-shadow .14s ease, opacity .14s ease, background .14s ease;
}

.btn:hover
{
    transform: translateY(-2px);
}

.btn:active
{
    transform: translateY(0);
}

.btn-light
{
    background: #fff;
    color: var(--accent);
    box-shadow: var(--shadow-soft);
}

.btn-ghost
{
    background: rgba(255,255,255,.16);
    color: #fff;
    box-shadow: inset 0 0 0 1px rgba(255,255,255,.4);
}

.btn-accent
{
    background: linear-gradient(135deg, color-mix(in srgb, var(--accent) 88%, #fff) 0%, var(--accent) 100%);
    color: var(--accent-text);
    box-shadow: 0 14px 30px -14px color-mix(in srgb, var(--accent) 75%, transparent);
}

.btn-block
{
    width: 100%;
    justify-content: center;
}

.btn-link
{
    background: none;
    border: 0;
    color: var(--accent);
    font-family: inherit;
    font-size: 14px;
    cursor: pointer;
    text-decoration: underline;
}

/* ---------- Cartes ---------- */
.grid-cards
{
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
    margin-bottom: 44px;
}

.card
{
    background: var(--card);
    border: 1px solid var(--line);
    border-radius: var(--radius);
    padding: 28px;
    box-shadow: var(--shadow-soft);
    transition: transform .16s ease, box-shadow .16s ease;
}

.card h3
{
    margin: 16px 0 8px;
    font-size: 17.5px;
}

.card p
{
    margin: 0;
    color: var(--ink-soft);
    font-size: 14.5px;
}

.chip
{
    width: 48px;
    height: 48px;
    border-radius: 14px;
    display: grid;
    place-items: center;
    font-size: 21px;
    color: var(--accent);
    background: var(--accent-tint);
}

/* ---------- Footer ---------- */
.footer
{
    color: var(--ink-faint);
    font-size: 13px;
    padding: 36px 0 56px;
    text-align: center;
}

.footer strong
{
    color: var(--ink-soft);
}

.footer-links
{
    margin-top: 8px;
}

.footer-links a
{
    color: var(--ink-soft);
}

/* ---------- Listes tenants ---------- */
.tenant-list
{
    display: grid;
    gap: 12px;
    max-width: 460px;
    margin: 24px auto;
}

.tenant-link
{
    display: flex;
    align-items: center;
    justify-content: space-between;
    background: var(--card);
    border: 1px solid var(--line);
    border-radius: var(--radius-sm);
    padding: 16px 20px;
    font-weight: 650;
    box-shadow: var(--shadow-soft);
    transition: transform .14s ease, box-shadow .14s ease;
}

.tenant-link:hover
{
    transform: translateY(-2px);
    box-shadow: var(--shadow);
}

.center-wrap
{
    min-height: 70vh;
    display: grid;
    place-items: center;
    text-align: center;
}

/* ---------- Auth (login / otp) ---------- */
.auth-wrap
{
    min-height: 74vh;
    display: grid;
    place-items: center;
    padding: 24px 0 64px;
}

.auth-card
{
    width: 100%;
    max-width: 440px;
    background: var(--card);
    border: 1px solid var(--line);
    border-radius: var(--radius);
    padding: 40px 36px;
    box-shadow: var(--shadow);
}

.auth-card h1
{
    margin: 0 0 8px;
    font-size: 27px;
}

.auth-sub
{
    margin: 0 0 24px;
    color: var(--ink-soft);
    font-size: 15px;
}

/* ---------- Champs ---------- */
.field-label
{
    display: block;
    font-size: 13px;
    font-weight: 650;
    color: var(--ink-soft);
    margin-bottom: 7px;
}

.field
{
    width: 100%;
    border: 1px solid var(--line);
    background: #fff;
    border-radius: var(--radius-sm);
    padding: 13px 15px;
    font-family: inherit;
    font-size: 15px;
    color: var(--ink);
    margin-bottom: 18px;
    transition: border-color .14s ease, box-shadow .14s ease;
}

.field::placeholder
{
    color: var(--ink-faint);
}

.field:focus
{
    outline: none;
    border-color: var(--accent);
    box-shadow: var(--ring);
}

.field-code
{
    text-align: center;
    font-size: 30px;
    letter-spacing: 14px;
    font-weight: 800;
    padding: 16px;
}

/* ---------- Alertes ---------- */
.alert
{
    border-radius: var(--radius-sm);
    padding: 13px 16px;
    font-size: 14px;
    margin-bottom: 18px;
}

.alert-error
{
    background: var(--err-bg);
    color: var(--err);
}

.alert-ok
{
    background: var(--ok-bg);
    color: var(--ok);
}

.checkbox-row
{
    display: flex;
    align-items: center;
    gap: 9px;
    font-size: 14px;
    color: var(--ink-soft);
    margin-bottom: 22px;
    cursor: pointer;
}

.resend-form
{
    text-align: center;
    margin-top: 18px;
}

/* ---------- Responsive ---------- */
@media (max-width: 640px)
{
    .hero { padding: 48px 28px; }
    .auth-card { padding: 30px 24px; }
}