/* =========================================================
   Design tokens
   Colors are named, objects are named. Every visual property
   below references a token — change a token, restyle the site.
   ========================================================= */
:root {
    /* --- Color palette (named) --- */
    --color-night:        #0f172a;  /* deepest background end  */
    --color-twilight:     #1f2937;  /* background highlight     */
    --color-surface:      rgba(15, 23, 42, 0.60); /* panel bg       */
    --color-surface-soft: rgba(15, 23, 42, 0.40); /* card bg        */
    --color-surface-warm: rgba(46, 48, 54, 0.45); /* card hover bg  */
    --color-border:       rgba(255, 255, 255, 0.08); /* panel border */
    --color-border-faint: rgba(255, 255, 255, 0.05); /* card border */
    --color-text:         #e5e7eb;  /* primary text            */
    --color-text-bright:  #ffffff;  /* hover / emphasis        */
    --color-text-muted:   #9ca3af;  /* secondary text          */
    --color-text-faint:   #6b7280;  /* arrows / footer         */
    --color-overlay:      rgba(0, 0, 0, 0.35); /* panel shadow   */
    --color-overlay-soft: rgba(0, 0, 0, 0.25); /* card shadow    */

    /* --- Object tokens (named per component) --- */
    --panel-radius:   20px;
    --card-radius:    16px;
    --panel-blur:     10px;
    --panel-saturate: 120%;
    --panel-shadow:   0 10px 40px var(--color-overlay);
    --card-shadow:    0 6px 25px var(--color-overlay-soft);
    --panel-pad-y:    40px;
    --panel-pad-x:    clamp(16px, 4vw, 48px);
    --card-pad-y:     16px;
    --card-pad-x:     20px;
    --card-gap:       14px;
    --card-margin:    14px;
    --panel-max-width: 560px;
    --icon-size:      28px;
    --card-lift:     -2px;
    --transition:    all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* =========================================================
   Page baseline
   ========================================================= */
html {
    height: 100%;
}

body {
    margin: 0;
    font: 16px/1.4 system-ui, -apple-system, "Segoe UI", Roboto, Ubuntu,
        Cantarell, "Noto Sans", Helvetica, Arial,
        "Apple Color Emoji", "Segoe UI Emoji";
    color: var(--color-text);
    background: radial-gradient(1200px 800px at 70% 20%,
        var(--color-twilight), var(--color-night) 60%);
    background-attachment: fixed;
    background-size: cover;
    min-height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* =========================================================
   Panel (links-wrap)
   ========================================================= */
.links-wrap {
    position: relative;
    z-index: 10;
    width: 100%;
    max-width: var(--panel-max-width);
    margin: 0 auto;
    padding: var(--panel-pad-y) var(--panel-pad-x);
    background: var(--color-surface);
    backdrop-filter: blur(var(--panel-blur)) saturate(var(--panel-saturate));
    border: 1px solid var(--color-border);
    border-radius: var(--panel-radius);
    box-shadow: var(--panel-shadow);
    text-align: center;
}

.links-wrap h1 {
    font-weight: 600;
    margin-bottom: 0.25rem;
}

.links-wrap p.subtitle {
    color: var(--color-text-muted);
    margin-bottom: 2rem;
}

/* =========================================================
   Link card
   ========================================================= */
.link-card {
    display: flex;
    align-items: center;
    gap: var(--card-gap);
    padding: var(--card-pad-y) var(--card-pad-x);
    margin-bottom: var(--card-margin);
    background: var(--color-surface-soft);
    border: 1px solid var(--color-border-faint);
    border-radius: var(--card-radius);
    text-decoration: none;
    color: var(--color-text);
    transition: var(--transition);
}

.link-card:hover {
    background: var(--color-surface-warm);
    box-shadow: var(--card-shadow);
    transform: translateY(var(--card-lift));
    color: var(--color-text-bright);
}

.link-card .icon {
    flex: 0 0 auto;
    width: var(--icon-size);
    height: var(--icon-size);
    display: flex;
    align-items: center;
    justify-content: center;
}

.link-card .label {
    text-align: left;
    font-weight: 500;
}

.link-card .label small {
    display: block;
    color: var(--color-text-muted);
    font-weight: 400;
    font-size: 0.85rem;
}

.link-card .arrow {
    margin-left: auto;
    color: var(--color-text-faint);
}

/* =========================================================
   Footer
   ========================================================= */
footer {
    margin-top: 1.5rem;
    color: var(--color-text-faint);
    font-size: 0.85rem;
}