:root {
    --green-dark: #1E4538;
    --green-light: #4C8C5A;
    --beige: #F0EBE0;
    --text-dark: #333333;
    --white: #FFFFFF;
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    font-family: "Open Sans", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    background: var(--beige);
    color: var(--text-dark);
}

/* TYPOGRAFIA */
h1 {
    font-size: 48px;
    font-family: "Montserrat", sans-serif;
    font-weight: 700;
    margin-bottom: 16px;
}

h2 {
    font-size: 32px;
    font-family: "Montserrat", sans-serif;
    font-weight: 600;
    margin-bottom: 12px;
}

h3 {
    font-size: 24px;
    font-family: "Montserrat", sans-serif;
    font-weight: 600;
    margin-bottom: 8px;
}

p {
    font-size: 18px;
    line-height: 1.7;
}

/* HEADER */
.topbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 16px 40px;
    background: var(--green-dark);
    color: var(--white);
}

/* LOGO */
.logo {
    font-family: "Montserrat", sans-serif;
    font-size: 32px;
    font-weight: 800;
    letter-spacing: 1px;
    color: white;
    display: inline-block;
}

.logo-ai {
    color: var(--green-light);
    font-weight: 900;
    text-shadow: 0 0 8px rgba(76, 140, 90, 0.7);
}

/* Animoitu logo vain etusivulla */
.animated-logo {
    opacity: 0;
    transform: scale(0.8);
    animation: logoIn 1.2s ease forwards;
    animation-delay: 0.3s;
}

@keyframes logoIn {
    0% {
        opacity: 0;
        transform: scale(0.8);
    }
    60% {
        opacity: 1;
        transform: scale(1.05);
    }
    100% {
        opacity: 1;
        transform: scale(1);
    }
}

/* NAVI */
.main-nav a {
    color: var(--white);
    text-decoration: none;
    margin-left: 20px;
    font-weight: 500;
    position: relative;
}

.main-nav a::after {
    content: "";
    position: absolute;
    left: 0;
    bottom: -4px;
    width: 0;
    height: 2px;
    background: var(--green-light);
    transition: width 0.3s;
}

.main-nav a:hover::after {
    width: 100%;
}

.main-nav a.active {
    text-decoration: underline;
}

/* HAMBURGER */
.hamburger {
    display: none;
    flex-direction: column;
    gap: 6px;
    background: transparent;
    border: none;
    cursor: pointer;
}

.hamburger span {
    width: 30px;
    height: 4px;
    background: var(--white);
    border-radius: 4px;
    transition: 0.4s;
}

.hamburger.open span:nth-child(1) {
    transform: rotate(45deg) translateY(10px);
}

.hamburger.open span:nth-child(2) {
    opacity: 0;
}

.hamburger.open span:nth-child(3) {
    transform: rotate(-45deg) translateY(-10px);
}

/* MOBIILINAVI */
.mobile-nav {
    display: none;
    flex-direction: column;
    background: var(--green-dark);
    padding: 10px 20px;
}

.mobile-nav a {
    color: var(--white);
    text-decoration: none;
    padding: 10px 0;
    border-bottom: 1px solid var(--green-light);
}

.mobile-nav a.active {
    font-weight: 700;
}

/* HERO */
.hero {
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    gap: 40px;
    padding: 40px 40px;
    background: var(--white);
}

.hero-text {
    opacity: 0;
    transform: translateX(-40px);
    animation: heroTextIn 1s ease forwards;
}

@keyframes heroTextIn {
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

.hero-visual img {
    width: 100%;
    border-radius: 10px;
    object-fit: cover;
    opacity: 0;
    transform: translateX(40px);
    animation: heroImgIn 1s ease forwards;
    animation-delay: 0.3s;
}

@keyframes heroImgIn {
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

.hero-buttons {
    margin-top: 20px;
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
}

/* BUTTONIT */
.btn {
    display: inline-block;
    padding: 10px 18px;
    border-radius: 6px;
    text-decoration: none;
    font-weight: 600;
    font-size: 16px;
    margin-top: 10px;
}

.btn.primary {
    background: var(--green-dark);
    color: var(--white);
}

.btn.primary:hover {
    background: var(--green-light);
}

.btn.secondary {
    border: 2px solid var(--green-dark);
    color: var(--green-dark);
    background: transparent;
}

.btn.secondary:hover {
    background: var(--green-dark);
    color: var(--white);
}

/* PANEL / AI-OSA-ALUEET */
.panel {
    padding: 40px 40px;
    background: #F7F3EA;
}

/* Korttiryhmän animaatio (etusivu) */
.feature-row {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 20px;
    margin-top: 30px;
    opacity: 0;
    transform: translateY(50px);
    transition: 1s ease;
}

.feature-row.show {
    opacity: 1;
    transform: translateY(0);
}

.feature {
    background: var(--white);
    padding: 20px;
    border-radius: 10px;
    border: 1px solid #ddd;
    text-align: center;
}

/* Korttien hover-liike */
.card {
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.card:hover {
    transform: translateY(-10px);
    box-shadow: 0 10px 20px rgba(0,0,0,0.15);
}

/* HYÖDYT */
.benefits {
    padding: 40px 40px;
    background: var(--white);
}

.benefit-row {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 20px;
}

/* STATUS */
.status {
    margin-top: 16px;
    font-size: 16px;
    color: #555;
}

/* PAGE HERO (palvelut + yhteystiedot) */
.page-hero {
    padding: 40px 40px;
    background: var(--white);
}

/* PALVELUT-SIVU */
.service-list {
    padding: 40px 40px;
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 20px;
}

.service-list img {
    width: 100%;
    border-radius: 8px;
    margin-bottom: 10px;
}

/* Palvelukorttien animaatio */
.service-list .card {
    opacity: 0;
    transform: translateY(40px);
    animation: serviceCardIn 0.9s ease forwards;
}

.service-list .card:nth-child(1) { animation-delay: 0.2s; }
.service-list .card:nth-child(2) { animation-delay: 0.4s; }
.service-list .card:nth-child(3) { animation-delay: 0.6s; }

@keyframes serviceCardIn {
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* CTA-OSIO */
.cta-section {
    padding: 40px 40px;
    background: #F7F3EA;
}

/* YHTEYSTIEDOT */
.contact {
    padding: 30px;
    max-width: 1100px;
    margin: 20px auto;
}

.contact-image img {
    width: 100%;
    border-radius: 8px;
    opacity: 0;
    transform: translateX(-40px);
    animation: contactImgIn 1s ease forwards;
}

@keyframes contactImgIn {
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

.contact-content {
    display: grid;
    grid-template-columns: 1.1fr 1fr;
    gap: 30px;
    margin-top: 20px;
    opacity: 0;
    transform: translateX(40px);
    animation: contactFormIn 1s ease forwards;
    animation-delay: 0.3s;
}

@keyframes contactFormIn {
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

.contact form input,
.contact form textarea {
    width: 100%;
    padding: 8px;
    border-radius: 6px;
    border: 1px solid #aaa;
    font-size: 16px;
}

/* FOOTER */
footer {
    text-align: center;
    padding: 16px;
    background: var(--green-dark);
    color: var(--white);
    margin-top: 20px;
}

/* RESPONSIIVISUUS */
@media (max-width: 900px) {
    .hero {
        grid-template-columns: 1fr;
        padding: 30px 20px;
    }

    .feature-row,
    .benefit-row,
    .service-list {
        grid-template-columns: 1fr;
    }

    .contact-content {
        grid-template-columns: 1fr;
    }

    .topbar {
        padding: 12px 20px;
    }

    .main-nav {
        display: none;
    }

    .hamburger {
        display: flex;
    }

    .mobile-nav.open {
        display: flex;
    }
}

@media (max-width: 600px) {
    .panel,
    .benefits,
    .page-hero,
    .cta-section {
        padding: 30px 16px;
    }

    h1 {
        font-size: 36px;
    }

    h2 {
        font-size: 26px;
    }

    p {
        font-size: 16px;
    }
}