/* =====================================================================
   Discordia - stylesheet principale
   Strategia: mobile-first, dark di default, niente framework.
   Custom properties per il theming: facile aggiungere un tema chiaro
   in futuro cambiando solo le var sotto :root[data-theme="..."].
   ===================================================================== */

/* ---------- 1. Reset minimo ---------- */

*, *::before, *::after { box-sizing: border-box; }

html {
    -webkit-text-size-adjust: 100%; /* niente zoom auto su iOS in landscape */
    scroll-behavior: smooth;
}

@media (prefers-reduced-motion: reduce) {
    html { scroll-behavior: auto; }
    *, *::before, *::after { animation-duration: .001ms !important; transition-duration: .001ms !important; }
}

body {
    margin: 0;
    min-height: 100vh;
    min-height: 100dvh; /* dynamic viewport, gestisce iOS bar */
    display: flex;
    flex-direction: column;
    font-family: var(--font-sans);
    font-size: 16px;          /* base 16px = niente zoom su mobile */
    line-height: 1.6;
    color: var(--color-text);
    background: var(--color-bg);
    -webkit-font-smoothing: antialiased;
    text-rendering: optimizeLegibility;
}

img, svg { display: block; max-width: 100%; height: auto; }
button { font: inherit; cursor: pointer; }
a { color: inherit; text-decoration: none; }
:focus-visible {
    outline: 2px solid var(--color-accent);
    outline-offset: 2px;
    border-radius: 2px;
}

/* ---------- 2. Theme tokens ---------- */

:root {
    /* Palette dark (default) */
    --color-bg:        #0d0e10;
    --color-bg-elev:   #16171a;
    --color-bg-card:   #1c1d21;
    --color-border:    #2a2c32;
    --color-text:      #e6e6e9;
    --color-text-dim:  #8b8d96;
    --color-accent:    #5865f2;  /* blurple Discord */
    --color-accent-h:  #4752c4;
    --color-success:   #3ba55d;
    --color-warning:   #faa61a;
    --color-danger:    #ed4245;

    /* Layout */
    --container-w:     1100px;
    --radius-sm:       6px;
    --radius:          10px;
    --radius-lg:       16px;
    --shadow:          0 1px 0 rgba(255,255,255,.04), 0 8px 24px rgba(0,0,0,.4);
    --transition:      150ms ease;

    /* Tipografia */
    --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
                 Helvetica, Arial, system-ui, sans-serif,
                 "Apple Color Emoji", "Segoe UI Emoji";

    /* Touch target minimo (Apple HIG / Material) */
    --tap-min: 44px;
}

/* ---------- 3. Utilities ---------- */

.container {
    width: 100%;
    max-width: var(--container-w);
    margin-inline: auto;
    padding-inline: 1.25rem;
}

.skip-link {
    position: absolute;
    inset-inline-start: -9999px;
}
.skip-link:focus {
    position: fixed;
    top: 1rem; inset-inline-start: 1rem;
    z-index: 9999;
    background: var(--color-accent);
    color: #fff;
    padding: .5rem 1rem;
    border-radius: var(--radius-sm);
}

/* ---------- 4. Header ---------- */

.site-header {
    background: var(--color-bg-elev);
    border-bottom: 1px solid var(--color-border);
    position: sticky;
    top: 0;
    z-index: 50;
    backdrop-filter: saturate(140%) blur(8px);
    -webkit-backdrop-filter: saturate(140%) blur(8px);
}
.site-header__inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    padding-block: .875rem;
}

.site-header__logo {
    display: inline-flex;
    align-items: center;
    gap: .625rem;
    font-weight: 700;
    font-size: 1.0625rem;
    letter-spacing: -.02em;
    color: var(--color-text);
}
.site-header__logo-img {
    width: 28px; height: 28px;
    border-radius: 8px;
    display: block;
    object-fit: contain;
}

.site-header__burger {
    display: inline-flex;
    flex-direction: column;
    justify-content: center;
    gap: 4px;
    width: var(--tap-min);
    height: var(--tap-min);
    background: transparent;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    padding: 0 .75rem;
}
.site-header__burger span {
    display: block;
    height: 2px;
    background: var(--color-text);
    transition: transform var(--transition), opacity var(--transition);
}
.site-header__burger[aria-expanded="true"] span:nth-child(1) {
    transform: translateY(6px) rotate(45deg);
}
.site-header__burger[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.site-header__burger[aria-expanded="true"] span:nth-child(3) {
    transform: translateY(-6px) rotate(-45deg);
}

.site-header__nav {
    display: none;
    flex-direction: column;
    gap: .25rem;
    position: absolute;
    inset: 100% 0 auto 0;
    padding: .75rem 1.25rem 1rem;
    background: var(--color-bg-elev);
    border-bottom: 1px solid var(--color-border);
}
.site-header__nav.is-open { display: flex; }
.site-header__nav a {
    color: var(--color-text-dim);
    padding: .625rem .25rem;
    min-height: var(--tap-min);
    display: inline-flex;
    align-items: center;
    transition: color var(--transition);
}
.site-header__nav a:hover { color: var(--color-text); }
.site-header__nav-link {
    gap: .5rem;
}
.site-header__avatar {
    width: 24px; height: 24px;
    border-radius: 50%;
}

@media (min-width: 720px) {
    .site-header__burger { display: none; }
    .site-header__nav {
        display: flex;
        flex-direction: row;
        gap: 1.25rem;
        position: static;
        padding: 0;
        background: transparent;
        border: none;
    }
}

/* ---------- 5. Buttons ---------- */

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: .5rem;
    padding: .75rem 1.25rem;
    min-height: var(--tap-min);
    font-weight: 500;
    font-size: .9375rem;
    border: 1px solid transparent;
    border-radius: var(--radius);
    transition: background var(--transition), color var(--transition),
                border-color var(--transition), transform 50ms;
    user-select: none;
    white-space: nowrap;
}
.btn:active { transform: translateY(1px); }
.btn[aria-disabled="true"], .btn:disabled { opacity: .5; pointer-events: none; }

.btn--primary { background: var(--color-accent); color: #fff; }
.btn--primary:hover { background: var(--color-accent-h); }

.btn--ghost {
    background: transparent;
    color: var(--color-text);
    border-color: var(--color-border);
}
.btn--ghost:hover { background: var(--color-bg-elev); }

.btn--discord { gap: .625rem; }

.btn--sm { padding: .5rem .875rem; font-size: .875rem; min-height: 36px; }
.btn--lg { padding: .875rem 1.5rem; font-size: 1rem; }
.btn--full { width: 100%; }

/* ---------- 6. Hero ---------- */

.hero {
    text-align: center;
    padding-block: 3.5rem 2.5rem;
}
.hero__logo {
    width: 80px;
    height: 80px;
    margin: 0 auto 1rem;
    display: block;
    border-radius: 18px;
    box-shadow: 0 12px 40px rgba(88, 101, 242, .25);
}
@media (min-width: 720px) {
    .hero__logo { width: 96px; height: 96px; }
}
.hero__title {
    font-size: clamp(2rem, 6vw, 3.25rem);
    line-height: 1.1;
    letter-spacing: -.03em;
    margin: 1rem 0;
}
.hero__lead {
    color: var(--color-text-dim);
    max-width: 560px;
    margin: 0 auto 2rem;
    font-size: 1.0625rem;
}
.hero__cta {
    display: flex;
    flex-direction: column;
    gap: .75rem;
    align-items: stretch;
    max-width: 320px;
    margin-inline: auto;
}
@media (min-width: 560px) {
    .hero__cta { flex-direction: row; justify-content: center; max-width: none; }
}

/* ---------- 7. Badge ---------- */

.badge {
    display: inline-block;
    padding: .25rem .75rem;
    font-size: .8125rem;
    font-weight: 500;
    border-radius: 999px;
    border: 1px solid var(--color-border);
    background: var(--color-bg-elev);
    color: var(--color-text-dim);
}
.badge--accent {
    background: rgba(88,101,242,.12);
    border-color: rgba(88,101,242,.3);
    color: var(--color-accent);
}

/* ---------- 8. Features ---------- */

.features {
    padding-block: 3rem 2rem;
    border-top: 1px solid var(--color-border);
}
.features__title {
    text-align: center;
    font-size: clamp(1.5rem, 3vw, 2rem);
    margin-block: 0 2rem;
    letter-spacing: -.02em;
}
.features__grid {
    display: grid;
    gap: 1rem;
    grid-template-columns: 1fr;
}
@media (min-width: 720px) {
    .features__grid { grid-template-columns: repeat(3, 1fr); }
}

.feature-card {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: 1.5rem;
    transition: border-color var(--transition), transform var(--transition);
}
.feature-card:hover { border-color: var(--color-accent); transform: translateY(-2px); }
.feature-card__icon { font-size: 1.75rem; margin-bottom: .75rem; }
.feature-card h3 { margin: 0 0 .5rem; font-size: 1.125rem; }
.feature-card p { color: var(--color-text-dim); margin: 0; }

/* ---------- 9. CTA banner ---------- */

.cta-banner {
    text-align: center;
    padding-block: 3rem;
    border-top: 1px solid var(--color-border);
}
.cta-banner h2 { font-size: 1.5rem; margin-block: 0 .5rem; }
.cta-banner p {
    color: var(--color-text-dim);
    max-width: 520px;
    margin: 0 auto 1.5rem;
}

/* ---------- 10. Auth card ---------- */

.auth { padding-block: 3rem 4rem; }
.auth__card {
    max-width: 440px;
    margin-inline: auto;
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: 2rem;
    box-shadow: var(--shadow);
}
.auth__title { margin-block: 0 .75rem; font-size: 1.5rem; letter-spacing: -.02em; }
.auth__lead { color: var(--color-text-dim); margin-block: 0 1.5rem; font-size: .9375rem; }
.auth__legal {
    color: var(--color-text-dim);
    font-size: .8125rem;
    margin-block: 1.5rem 0;
    text-align: center;
    line-height: 1.5;
}
.auth__legal code {
    background: var(--color-bg-elev);
    padding: .1em .4em;
    border-radius: 4px;
    font-size: .9em;
}

/* ---------- 11. Alerts ---------- */

.alert {
    padding: 1rem 1.25rem;
    border-radius: var(--radius);
    border: 1px solid var(--color-border);
    background: var(--color-bg-elev);
    color: var(--color-text-dim);
    margin-block: 1rem;
    font-size: .9375rem;
}
.alert p { margin-block: 0; }
.alert p + p { margin-top: .5rem; }
.alert strong { color: var(--color-text); }
.alert code {
    background: var(--color-bg-card);
    padding: .15em .4em;
    border-radius: 4px;
    font-size: .9em;
}
.alert--warning {
    border-color: rgba(250,166,26,.3);
    background: rgba(250,166,26,.08);
    color: var(--color-warning);
}

/* ---------- 12. Dashboard ---------- */

.dashboard { padding-block: 2rem 4rem; }
.dashboard__header {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-block: 0 2rem;
}
.dashboard__avatar {
    width: 64px; height: 64px;
    border-radius: 50%;
    border: 2px solid var(--color-border);
}
@media (min-width: 560px) {
    .dashboard__avatar { width: 72px; height: 72px; }
}
.dashboard__greeting { margin-block: 0; font-size: 1.5rem; letter-spacing: -.02em; }
.dashboard__role { color: var(--color-text-dim); margin-block: .25rem 0; font-size: .9375rem; }
.dashboard__grid {
    display: grid;
    gap: 1rem;
    grid-template-columns: 1fr;
    margin-block: 2rem 0;
}
@media (min-width: 720px) {
    .dashboard__grid { grid-template-columns: repeat(3, 1fr); }
}
.dashboard__card {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: 1.5rem;
}
.dashboard__card h2 { margin-block: 0 .75rem; font-size: 1rem; color: var(--color-text-dim); text-transform: uppercase; letter-spacing: .05em; }
.dashboard__placeholder { color: var(--color-text-dim); font-size: .9375rem; margin-block: 0 1rem; }

/* ---------- 13. Footer ---------- */

.site-footer {
    border-top: 1px solid var(--color-border);
    padding-block: 1.5rem;
    color: var(--color-text-dim);
    font-size: .875rem;
    margin-top: auto;
}
.site-footer__inner {
    display: flex;
    flex-direction: column;
    gap: .75rem;
    align-items: center;
    text-align: center;
}
.site-footer p { margin-block: 0; }
.site-footer__nav { display: flex; gap: 1rem; flex-wrap: wrap; justify-content: center; }
.site-footer__nav a { color: var(--color-text-dim); }
.site-footer__nav a:hover { color: var(--color-text); }
.site-footer__nav a[aria-disabled="true"] { opacity: .5; cursor: not-allowed; }

@media (min-width: 720px) {
    .site-footer__inner { flex-direction: row; justify-content: space-between; }
}

/* ---------- 14. Error pages ---------- */

.error-page {
    text-align: center;
    padding-block: 4rem 5rem;
}
.error-page__code {
    font-size: clamp(4.5rem, 14vw, 7rem);
    line-height: 1;
    color: var(--color-text-dim);
    margin: 0 0 .5rem;
    font-weight: 800;
    letter-spacing: -.05em;
}
.error-page__title {
    font-size: clamp(1.5rem, 4vw, 2rem);
    margin-block: 0 .75rem;
    letter-spacing: -.02em;
}
.error-page__lead {
    color: var(--color-text-dim);
    max-width: 480px;
    margin: 0 auto 1.5rem;
}