/* --- TEEMAMUUTTUJAT --- */
:root {
    --brand: #14695c; /* Sovelluksen vihreä teemaväri */
    --brand-hover: #0d4a40;
    --bg-main: #ffffff;
    --bg-sec: #e8f1ee;
    --bg-glass: rgba(244, 247, 246, 0.85);
    --text-main: #1f2d2a;
    --text-muted: #5c6b67;
    --border: #e1e8e6;
    --danger-bg: #FFF0F0;
    --danger-text: #D00000;
    --danger-border: #FFB3B3;
    --shadow: 0 10px 30px rgba(20, 105, 92, 0.08);
    --font-family: 'Manrope', system-ui, -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    --font-display: 'Fraunces', Georgia, 'Times New Roman', serif;
    --radius: 20px;
    --badge-soon: "Tulossa";
}

[data-theme="dark"] {
    --bg-main: #0d1412;
    --bg-sec: #14201d;
    --bg-glass: rgba(13, 20, 18, 0.85);
    --text-main: #e6efec;
    --text-muted: #9bb0aa;
    --border: #25332f;
    --brand: #4db6a4;
    --brand-hover: #6fcaba;
    --danger-bg: rgba(208, 0, 0, 0.15);
    --danger-text: #ff6b6b;
    --danger-border: #7f1d1d;
    --shadow: 0 10px 30px rgba(0,0,0,0.5);
}

/* --- PERUSASETUKSET --- */
* { margin: 0; padding: 0; box-sizing: border-box; }

body {
    font-family: var(--font-family);
    background-color: var(--bg-main);
    color: var(--text-main);
    line-height: 1.5;
    -webkit-font-smoothing: antialiased;
    transition: background-color 0.3s, color 0.3s;
    overflow-x: hidden;
}

h1, h2, h3, h4, .logo { font-family: var(--font-display); font-weight: 600; }

a { text-decoration: none; color: inherit; }
.container { max-width: 1200px; margin: 0 auto; padding: 0 2rem; }

/* --- SKIP-LINK (saavutettavuus) --- */
.skip-link {
    position: absolute; top: -100px; left: 1rem;
    background: var(--text-main); color: var(--bg-main);
    padding: 0.6rem 1rem; border-radius: 8px;
    font-weight: 600; z-index: 100;
    transition: top 0.15s;
}
.skip-link:focus { top: 0.5rem; outline: 2px solid var(--brand); outline-offset: 2px; }

/* --- MDR BANNERI --- */
.mdr-banner {
    background-color: var(--danger-bg);
    color: var(--danger-text);
    text-align: center;
    padding: 8px 24px;
    font-size: 0.85rem;
    font-weight: 500;
    border-bottom: 1px solid var(--danger-border);
}

/* --- NAVIGOINTI --- */
nav {
    position: sticky;
    top: 0; width: 100%;
    background: var(--bg-glass);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border);
    z-index: 1000;
    padding: 1rem 0;
}

.nav-content { display: flex; justify-content: space-between; align-items: center; }

.logo { font-size: 1.25rem; font-weight: 700; display: flex; align-items: center; gap: 0.6rem; letter-spacing: -0.02em;}
.logo-icon { width: 32px; height: 32px; border-radius: 8px; display: block; }

.nav-links { display: flex; gap: 2rem; align-items: center; }
.nav-links a { font-size: 0.95rem; font-weight: 500; color: var(--text-muted); transition: color 0.2s; }
.nav-links a:hover { color: var(--text-main); }
.lang-link { border: 1px solid var(--border); border-radius: 999px; padding: 0.3rem 0.7rem; font-weight: 600 !important; letter-spacing: 0.03em; }
.lang-link:hover { border-color: var(--brand); color: var(--brand) !important; }

.theme-toggle { background: none; border: none; color: var(--text-main); cursor: pointer; display: flex; padding: 5px; border-radius: 50%; transition: background 0.2s; }
.theme-toggle:hover { background: var(--bg-sec); }

/* Mobiilinavigaation hampurilainen */
.nav-burger {
    display: none; background: none; border: none; cursor: pointer; padding: 6px;
    color: var(--text-main); border-radius: 8px;
}
.nav-burger:hover { background: var(--bg-sec); }

/* Disabloitu painike (kauppanapit) */
.btn:disabled {
    opacity: 0.55; cursor: not-allowed;
    position: relative;
}
.btn:disabled::after {
    content: var(--badge-soon); position: absolute; top: -9px; right: -6px;
    background: var(--brand); color: #fff; font-size: 0.65rem; font-weight: 700;
    padding: 2px 7px; border-radius: 10px; letter-spacing: 0.02em;
}

.btn-hint { font-size: 0.8rem; color: var(--text-muted); margin-top: -0.25rem; margin-bottom: 1rem; }

/* --- HERO --- */
.hero { padding: 6rem 0 4rem; display: flex; align-items: center; gap: 4rem; min-height: 85vh; }
.hero-text { flex: 1; }

.hero h1 { font-size: clamp(2.5rem, 5vw, 4rem); font-weight: 700; letter-spacing: -0.04em; line-height: 1.05; margin-bottom: 1.5rem; }
.hero p { font-size: 1.2rem; color: var(--text-muted); margin-bottom: 2.5rem; max-width: 550px; }

.stores { display: flex; gap: 1rem; flex-wrap: wrap; margin-bottom: 2rem; }
.btn {
    display: inline-flex; align-items: center; justify-content: center; gap: 0.6rem;
    padding: 0.8rem 1.5rem; border-radius: 30px; font-weight: 600; font-size: 1rem;
    font-family: inherit; line-height: 1;
    background: var(--text-main); color: var(--bg-main);
    border: none; cursor: pointer;
    transition: transform 0.2s, opacity 0.2s, background-color 0.2s;
}
.btn-outline { background: var(--bg-main); color: var(--text-main); border: 1px solid var(--border); }
.btn:not(:disabled):hover { transform: translateY(-2px); opacity: 0.9; }
.btn svg { width: 22px; height: 22px; fill: currentColor; }

/* Uusi tyyli pääpainikkeelle */
.btn-primary { background: var(--brand); color: white; border: none; }
.btn-primary:hover { background: var(--brand-hover); opacity: 1; }

/* Hero-screenshot fan */
.hero-visual { flex: 1; display: flex; justify-content: center; align-items: center; min-width: 0; }
.phone-fan {
    position: relative; width: 320px; height: 650px;
}
.phone {
    position: absolute; top: 0; left: 50%;
    width: 280px; aspect-ratio: 585 / 1266;
    border: 10px solid #1d1d1f; border-radius: 36px;
    background: #1d1d1f; overflow: hidden;
    box-shadow: 0 25px 50px rgba(0,0,0,0.18);
    transform-origin: bottom center;
    transition: transform 0.5s cubic-bezier(0.16, 1, 0.3, 1);
}
[data-theme="dark"] .phone { border-color: #38383a; background: #38383a; }
.phone img { width: 100%; height: 100%; object-fit: cover; display: block; }
.phone-1 { transform: translateX(-50%) translateX(-110px) rotate(-8deg); z-index: 1; }
.phone-2 { transform: translateX(-50%) translateY(-10px) rotate(0deg); z-index: 3; }
.phone-3 { transform: translateX(-50%) translateX(110px) rotate(8deg); z-index: 1; }
.phone-fan:hover .phone-1 { transform: translateX(-50%) translateX(-130px) rotate(-10deg); }
.phone-fan:hover .phone-3 { transform: translateX(-50%) translateX(130px) rotate(10deg); }
@media (prefers-reduced-motion: reduce) {
    .phone { transition: none; }
}

/* --- BENTO GRID (Ominaisuudet) --- */
.section { padding: 6rem 0; }
.section-header { text-align: center; margin-bottom: 4rem; }
.section-header h2 { font-size: 2.5rem; margin-bottom: 1rem; letter-spacing: -0.03em; }
.section-header p { color: var(--text-muted); font-size: 1.15rem; max-width: 600px; margin: 0 auto; }

.bento { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 1.5rem; }
.bento-item { background: var(--bg-main); border: 1px solid var(--border); border-radius: var(--radius); padding: 2.5rem; transition: transform 0.3s, box-shadow 0.3s; }
.bento-item:hover { transform: translateY(-5px); box-shadow: var(--shadow); border-color: var(--text-muted); }
.bento-icon { width: 48px; height: 48px; background: var(--bg-sec); color: var(--brand); border-radius: 12px; display: flex; align-items: center; justify-content: center; margin-bottom: 1.5rem; font-size: 24px;}
.bento-item h3 { font-size: 1.25rem; margin-bottom: 0.8rem; letter-spacing: -0.01em;}
.bento-item p { color: var(--text-muted); font-size: 0.95rem; }

/* --- SYVÄSUKELLUS (Algoritmi & Turvallisuus) --- */
.deep-dive { background: var(--bg-sec); border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); }
.feature-row { display: grid; grid-template-columns: 1fr 1fr; gap: 5rem; align-items: center; margin-bottom: 6rem; }
.feature-row:last-child { margin-bottom: 0; }

.ft-text h3 { font-size: 2.2rem; margin-bottom: 1.2rem; letter-spacing: -0.03em; line-height: 1.1;}
.ft-text p { color: var(--text-muted); margin-bottom: 1.2rem; font-size: 1.1rem; }
.ft-list { list-style: none; margin-top: 1.5rem; }
.ft-list li { margin-bottom: 1rem; display: flex; align-items: flex-start; gap: 1rem; color: var(--text-main);}
.ft-list li svg { width: 22px; height: 22px; color: var(--brand); flex-shrink: 0; margin-top: 2px;}

.ft-visual { background: var(--bg-main); border: 1px solid var(--border); border-radius: 24px; padding: 3rem; display: flex; flex-direction: column; align-items: center; justify-content: center; box-shadow: var(--shadow); position: relative; overflow: hidden; min-height: 380px;}

/* --- MDR FOOTER --- */
footer { padding: 5rem 0 3rem; text-align: center; }
.mdr-box { background: var(--danger-bg); border: 1px solid rgba(208,0,0,0.2); border-radius: 16px; padding: 2rem; text-align: left; margin-bottom: 4rem; max-width: 900px; margin-left: auto; margin-right: auto;}
.mdr-box h4 { color: var(--danger-text); display: flex; align-items: center; gap: 0.5rem; margin-bottom: 1rem; font-size: 1.1rem; }
.mdr-box p { color: var(--text-main); font-size: 0.95rem; margin-bottom: 0.8rem; }
.footer-links { display: flex; gap: 1.5rem; justify-content: center; margin-bottom: 1.5rem; flex-wrap: wrap; }
.footer-links a { color: var(--text-muted); font-size: 0.9rem; transition: color 0.2s; }
.footer-links a:hover { color: var(--text-main); }
.footer-bottom { border-top: 1px solid var(--border); padding-top: 2rem; color: var(--text-muted); font-size: 0.9rem; display: flex; justify-content: space-between; align-items: center;}

/* --- RESPONSIVISUUS --- */
@media (max-width: 900px) {
    .hero { flex-direction: column; text-align: center; gap: 3rem; }
    .feature-row { grid-template-columns: 1fr; gap: 3rem; }
    .hero-text { display: flex; flex-direction: column; align-items: center; }
    .stores { justify-content: center; }
    .ft-list li { text-align: left; }
    .hero h1 { font-size: 2.8rem; }
    .phone-fan { width: 320px; height: 500px; margin: 0 auto; }
    .phone { width: 200px; border-width: 8px; border-radius: 30px; }
    .phone-1 { transform: translateX(-50%) translateX(-70px) rotate(-6deg); }
    .phone-3 { transform: translateX(-50%) translateX(70px) rotate(6deg); }
    .phone-fan:hover .phone-1 { transform: translateX(-50%) translateX(-80px) rotate(-7deg); }
    .phone-fan:hover .phone-3 { transform: translateX(-50%) translateX(80px) rotate(7deg); }

    .nav-burger { display: inline-flex; }
    .nav-links {
        position: absolute; top: 100%; left: 0; right: 0;
        flex-direction: column; align-items: stretch; gap: 0;
        background: var(--bg-glass); backdrop-filter: blur(20px);
        -webkit-backdrop-filter: blur(20px);
        border-bottom: 1px solid var(--border);
        padding: 0.5rem 2rem 1rem;
        transform: translateY(-10px); opacity: 0; pointer-events: none;
        transition: transform 0.2s, opacity 0.2s;
    }
    .nav-links a { padding: 0.9rem 0; border-bottom: 1px solid var(--border); }
    .nav-links a:last-of-type { border-bottom: none; }
    .nav-links .theme-toggle { align-self: flex-end; margin-top: 0.5rem; }
    nav.open .nav-links { transform: translateY(0); opacity: 1; pointer-events: auto; }
}
@media (max-width: 600px) {
    .footer-bottom { flex-direction: column; gap: 1rem; }
    .footer-links { flex-wrap: wrap; justify-content: center; }
    /* Pinoaa napit siististi allekkain mobiilissa */
    .stores { flex-direction: column; width: 100%; max-width: 280px; margin: 0 auto 2rem; }
}

/* --- ANIMAATIOT --- */
.fade-in { opacity: 0; transform: translateY(20px); transition: opacity 0.8s cubic-bezier(0.16, 1, 0.3, 1), transform 0.8s cubic-bezier(0.16, 1, 0.3, 1); }
.fade-in.visible { opacity: 1; transform: translateY(0); }

/* Animaatiot pois liikkeenrajoituksen kanssa */
@media (prefers-reduced-motion: reduce) {
    .fade-in { opacity: 1; transform: none; transition: none; }
}