/* =========================================================
   Viple — Portail écosystème — Windows Metro style
   ========================================================= */

:root {
    --metro-bg: #1a1a1a;
    --metro-surface: #232323;
    --metro-text: #f2f2f2;
    --metro-text-muted: #b9b9b9;
    --metro-cyan: #1ba1e2;
    --metro-teal: #00aba9;
    --metro-lime: #a4c400;
    --metro-magenta: #d80073;
    --metro-orange: #f09609;
    --metro-indigo: #6a00ff;
    --metro-gold: #b08d3f;
    --metro-blue: #2d89ef;
}

* { box-sizing: border-box; }

html, body {
    margin: 0;
    padding: 0;
    background: var(--metro-bg);
    color: var(--metro-text);
    font-family: 'Segoe UI', Inter, -apple-system, BlinkMacSystemFont, sans-serif;
}

a { color: inherit; text-decoration: none; }

.metro-shell { min-height: 100vh; display: flex; flex-direction: column; }

/* ---------- Bandeau sécurité ---------- */
.security-banner {
    background: #071a33;
    color: #dfe7f2;
    border-bottom: 3px solid var(--metro-gold);
}

.security-banner-inner {
    max-width: 1100px;
    margin: 0 auto;
    padding: .4rem 1rem;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: .45rem;
    font-size: .78rem;
    font-weight: 600;
    letter-spacing: .01em;
    text-align: center;
}

.shield-icon { color: #d4b876; flex-shrink: 0; }

/* ---------- Hero ---------- */
.metro-hero {
    padding: 3.5rem 1.5rem 2rem;
    border-bottom: 1px solid #2f2f2f;
}

.metro-hero-inner {
    max-width: 1100px;
    margin: 0 auto;
}

.metro-brand {
    display: inline-block;
    font-size: 1rem;
    font-weight: 700;
    letter-spacing: .12em;
    text-transform: uppercase;
    color: var(--metro-cyan);
    margin-bottom: .5rem;
}

.metro-hero h1 {
    font-size: clamp(2rem, 1.4rem + 3vw, 3.2rem);
    font-weight: 200;
    margin: 0 0 .6rem;
    letter-spacing: -.01em;
}

.metro-hero p {
    color: var(--metro-text-muted);
    max-width: 640px;
    font-size: 1.05rem;
    line-height: 1.5;
    margin: 0;
}

/* ---------- Tile grid ---------- */
.tile-grid-wrap {
    flex: 1;
    padding: 2.5rem 1.5rem 4rem;
}

.tile-grid {
    max-width: 1100px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(4, minmax(140px, 1fr));
    gap: 6px;
}

.tile {
    position: relative;
    aspect-ratio: 1 / 1;
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    padding: 1rem;
    color: #fff;
    font-weight: 600;
    overflow: hidden;
    transition: transform 120ms ease, filter 120ms ease;
    background: var(--metro-surface);
}

.tile:hover, .tile:focus-visible {
    transform: scale(1.015);
    filter: brightness(1.12);
    outline: none;
}

.tile:active { transform: scale(.98); }

.tile-2x { grid-column: span 2; grid-row: span 1; }

.tile-icon {
    position: absolute;
    top: 1rem;
    left: 1rem;
    font-size: 1.8rem;
    line-height: 1;
    opacity: .95;
}

.tile-title {
    font-size: 1.15rem;
    font-weight: 700;
    letter-spacing: -.01em;
}

.tile-sub {
    font-size: .8rem;
    font-weight: 400;
    color: rgba(255,255,255,.85);
    margin-top: .15rem;
}

.tile-accent-cyan { background: var(--metro-cyan); }
.tile-accent-teal { background: var(--metro-teal); }
.tile-accent-lime { background: var(--metro-lime); color: #1a1a1a; }
.tile-accent-lime .tile-sub { color: rgba(0,0,0,.65); }
.tile-accent-magenta { background: var(--metro-magenta); }
.tile-accent-orange { background: var(--metro-orange); }
.tile-accent-indigo { background: var(--metro-indigo); }
.tile-accent-gold { background: var(--metro-gold); color: #1a1a1a; }
.tile-accent-gold .tile-sub { color: rgba(0,0,0,.65); }
.tile-accent-blue { background: var(--metro-blue); }

/* ---------- Footer ---------- */
.metro-footer {
    padding: 1.5rem;
    text-align: center;
    font-size: .8rem;
    color: var(--metro-text-muted);
    border-top: 1px solid #2f2f2f;
}

.metro-back {
    display: inline-block;
    margin-top: 1rem;
    padding: .6rem 1.2rem;
    background: var(--metro-cyan);
    color: #fff;
    font-weight: 600;
}

/* ---------- Responsive ---------- */
@media (max-width: 900px) {
    .tile-grid { grid-template-columns: repeat(3, minmax(110px, 1fr)); }
}

@media (max-width: 640px) {
    .tile-grid { grid-template-columns: repeat(2, minmax(100px, 1fr)); gap: 4px; }
    .tile-2x { grid-column: span 2; }
    .metro-hero { padding: 2.5rem 1rem 1.5rem; }
    .tile-grid-wrap { padding: 1.5rem 1rem 2.5rem; }
    .tile-icon { font-size: 1.4rem; }
    .tile-title { font-size: 1rem; }
    .tile-sub { font-size: .72rem; }
    .security-banner-inner { font-size: .68rem; padding: .4rem .6rem; }
    .shield-icon { width: 13px; height: 13px; }
}

@media (max-width: 400px) {
    .tile-grid { grid-template-columns: 1fr 1fr; }
}