*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --brand-dark:       #142601;
    --brand-darker:     #0a1500;
    --brand-mint:       #acf299;
    --brand-mint-soft:  rgba(172, 242, 153, 0.22);
    --brand-mint-glow:  rgba(172, 242, 153, 0.45);

    --bg:           #ffffff;
    --bg-alt:       #f6faf3;
    --bg-soft:      #eef4e9;
    --border:       #e0e7da;
    --border-soft:  #ecf0e7;

    --text:         #142601;
    --text-sec:     #3d4d33;
    --text-muted:   #7d8c72;

    --danger:       #b8442b;
    --danger-soft:  #fdebe6;

    --radius-sm:    6px;
    --radius:       10px;
    --radius-lg:    14px;

    --font-display: "Red Hat Display", sans-serif;
    --font-text:    "Red Hat Text", sans-serif;

    --container:    760px;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-text);
    font-size: 16px;
    line-height: 1.6;
    color: var(--text);
    background: var(--bg);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;

    background-image:
        radial-gradient(circle at 0% 0%, var(--brand-mint-soft) 0%, transparent 40%),
        radial-gradient(circle at 100% 8%, var(--brand-mint-soft) 0%, transparent 32%);
    background-attachment: fixed;
    background-repeat: no-repeat;
}

.container {
    max-width: var(--container);
    margin: 0 auto;
    padding: 0 24px;
}


/* Hero */

.hero {
    padding: 56px 0 32px;
}

.hero-inner {
    text-align: center;
}

.hero-logo {
    display: inline-block;
    margin-bottom: 28px;
    transition: opacity 0.18s ease;
}

.hero-logo img {
    height: 44px;
    width: auto;
    display: block;
}

.hero-logo:hover {
    opacity: 0.78;
}

.hero-title {
    font-family: var(--font-display);
    font-weight: 800;
    font-size: clamp(2.2rem, 5.5vw, 3.4rem);
    line-height: 1.05;
    letter-spacing: -0.025em;
    color: var(--text);
    margin-bottom: 18px;
}

.hero-accent {
    color: var(--brand-dark);
    font-style: italic;
    font-weight: 700;
    position: relative;
    display: inline-block;
}

.hero-accent::after {
    content: "";
    position: absolute;
    left: 0;
    right: 0;
    bottom: 0.04em;
    height: 0.32em;
    background: var(--brand-mint);
    z-index: -1;
    border-radius: 2px;
}

.hero-lead {
    max-width: 540px;
    margin: 0 auto 28px;
    font-size: 1.08rem;
    color: var(--text-sec);
}


/* Boutons */

.primary-download {
    display: flex;
    flex-direction: column;
    align-items: center;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 16px 28px;
    border-radius: var(--radius);
    font-family: var(--font-display);
    font-size: 1.05rem;
    font-weight: 600;
    text-decoration: none;
    cursor: pointer;
    transition: transform 0.15s ease, box-shadow 0.2s ease, background 0.2s ease;
    border: 1px solid transparent;
}

.btn-primary {
    background: var(--brand-dark);
    color: #ffffff;
    box-shadow: 0 4px 14px rgba(20, 38, 1, 0.25);
}

.btn-primary:hover {
    background: var(--brand-darker);
    transform: translateY(-1px);
    box-shadow:
        0 6px 22px rgba(20, 38, 1, 0.32),
        0 0 0 4px var(--brand-mint-soft);
}

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

.btn-icon {
    width: 18px;
    height: 18px;
    filter: brightness(0) invert(1);
}


/* Auth (page /connect) */

.auth-form {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
    max-width: 360px;
    margin: 0 auto;
}

.auth-input {
    width: 100%;
    padding: 14px 18px;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    background: var(--bg);
    color: var(--text);
    font-family: var(--font-text);
    font-size: 1rem;
    text-align: center;
    letter-spacing: 0.04em;
    transition: border-color 0.18s ease, box-shadow 0.18s ease;
}

.auth-input:focus {
    outline: none;
    border-color: var(--brand-mint);
    box-shadow: 0 0 0 4px var(--brand-mint-soft);
}

.auth-input::placeholder {
    color: var(--text-muted);
    letter-spacing: normal;
}

.auth-form .btn {
    width: 100%;
}

.auth-error {
    margin-top: 16px;
    padding: 10px 16px;
    background: var(--danger-soft);
    border: 1px solid #f5cdc1;
    border-radius: var(--radius);
    color: var(--danger);
    font-size: 0.9rem;
    text-align: center;
    max-width: 360px;
    margin-left: auto;
    margin-right: auto;
}


/* Notice (iOS, autres OS non supportés) */

.notice {
    margin-top: 32px;
    padding: 20px 24px;
    background: var(--danger-soft);
    border: 1px solid #f5cdc1;
    border-radius: var(--radius);
    text-align: left;
}

.notice strong {
    display: block;
    color: var(--danger);
    font-family: var(--font-display);
    font-weight: 700;
    margin-bottom: 4px;
}

.notice p {
    color: var(--text-sec);
    font-size: 0.94rem;
}

.hidden {
    display: none !important;
}


/* Titres de section */

.section-title {
    font-family: var(--font-display);
    font-weight: 700;
    font-size: 1.35rem;
    letter-spacing: -0.01em;
    margin-bottom: 24px;
    color: var(--text);
}


/* Grille plateformes */

.platforms {
    padding: 16px 0 40px;
}

.platforms-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
}

.pl-card {
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 16px 18px;
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    text-decoration: none;
    color: var(--text);
    transition: border-color 0.18s ease, transform 0.18s ease, background 0.18s ease;
}

.pl-card:hover {
    border-color: var(--brand-mint);
    background: var(--bg-alt);
    transform: translateY(-2px);
}

.pl-icon {
    width: 28px;
    height: 28px;
    flex-shrink: 0;
    color: var(--brand-dark);
    opacity: 0.92;
}

.pl-text {
    flex-grow: 1;
    min-width: 0;
}

.pl-text h3 {
    font-family: var(--font-display);
    font-weight: 600;
    font-size: 1rem;
    line-height: 1.2;
    margin-bottom: 2px;
}

.pl-detail {
    font-size: 0.83rem;
    color: var(--text-muted);
}

.pl-arrow {
    font-family: var(--font-display);
    color: var(--text-muted);
    font-size: 1.1rem;
    transition: color 0.18s ease, transform 0.18s ease;
}

.pl-card:hover .pl-arrow {
    color: var(--brand-dark);
    transform: translateY(2px);
}

@media (max-width: 560px) {
    .platforms-grid {
        grid-template-columns: 1fr;
    }
}


/* Étapes */

.howto {
    padding: 28px 0 48px;
    border-top: 1px solid var(--border-soft);
}

.steps {
    list-style: none;
    display: grid;
    gap: 4px;
}

.step {
    display: grid;
    grid-template-columns: 64px 1fr;
    gap: 18px;
    padding: 20px 0;
    border-bottom: 1px dashed var(--border);
    align-items: start;
}

.step:last-child {
    border-bottom: none;
}

.step-num {
    font-family: var(--font-display);
    font-weight: 800;
    font-size: 1.4rem;
    color: var(--brand-dark);
    line-height: 1;
    padding-top: 2px;
    letter-spacing: -0.02em;
}

.step-body h3 {
    font-family: var(--font-display);
    font-weight: 600;
    font-size: 1.05rem;
    margin-bottom: 4px;
    color: var(--text);
}

.step-body p {
    color: var(--text-sec);
    font-size: 0.95rem;
}


/* Footer */

.site-footer {
    padding: 28px 0 36px;
    border-top: 1px solid var(--border-soft);
    margin-top: 16px;
}

.footer-text {
    text-align: center;
    font-size: 0.85rem;
    color: var(--text-muted);
    letter-spacing: 0.01em;
}

.footer-text a {
    color: var(--text-sec);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.18s ease;
}

.footer-text a:hover {
    color: var(--brand-dark);
}

.footer-sep {
    margin: 0 8px;
    color: var(--border);
}