:root {
    --primary: #006d37;
    --primary-container: #27ae60;
    --primary-light: #61de8a;
    --secondary: #006d37;
    --water-blue: #3498db;

    --surface: #f7f9ff;
    --surface-mint: #f0f8f4;
    --surface-low: #edf4ff;
    --text: #091d2e;
    --text-muted: #3d4a3f;
    --outline: #bccabc;
    --white: #ffffff;

    --container: 1200px;
    --gutter: 24px;
    --section-space: 80px;

    --radius: 12px;
    --radius-lg: 16px;

    --shadow: 0 8px 24px rgba(39, 174, 96, 0.04);
    --shadow-header: 0 1px 8px rgba(39, 174, 96, 0.05);
}

* {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    scroll-padding-top: 80px;
}

body {
    margin: 0;
    min-width: 320px;
    background: var(--surface);
    color: var(--text);
    font-family: "Inter", sans-serif;
    line-height: 1.6;
}

body,
button,
input {
    font-family: "Inter", sans-serif;
}

a {
    color: inherit;
    text-decoration: none;
}

button,
input {
    font: inherit;
}

button {
    border: 0;
    cursor: pointer;
}

img {
    display: block;
    max-width: 100%;
}

.container {
    width: min(100% - 48px, var(--container));
    margin: 0 auto;
}

/* Header */

.site-header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    background: rgba(247, 249, 255, 0.82);
    backdrop-filter: blur(18px);
    -webkit-backdrop-filter: blur(18px);
    box-shadow: var(--shadow-header);
}

.header-inner {
    min-height: 80px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
}

.brand,
.footer-logo {
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--primary);
    font-family: "Plus Jakarta Sans", sans-serif;
    font-weight: 600;
}

.brand img {
    width: auto;
    height: 32px;
}

.main-nav {
    display: flex;
    align-items: center;
    gap: 24px;
    margin-left: auto;
}

.main-nav a {
    color: var(--text-muted);
    font-size: 14px;
    font-weight: 600;
    transition: color 0.2s ease;
}

.main-nav a:hover,
.main-nav a.active {
    color: var(--primary);
}

.header-actions {
    display: flex;
    align-items: center;
    gap: 16px;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 44px;
    padding: 10px 20px;
    border-radius: 8px;
    font-size: 14px;
    font-weight: 600;
    transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
}

.btn:hover {
    transform: translateY(-1px);
}

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

.btn-primary:hover {
    box-shadow: 0 10px 22px rgba(0, 109, 55, 0.2);
}

.btn-small {
    min-height: 36px;
    padding: 8px 16px;
}

.btn-outline {
    border: 1.5px solid var(--primary);
    color: var(--white);
    background: transparent;
}

.btn-outline:hover {
    background: rgba(0, 109, 55, 0.12);
}

.profile-button {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background: var(--primary);
    color: var(--white);
    display: grid;
    place-items: center;
}

.profile-button .material-symbols-outlined {
    font-size: 18px;
}

.mobile-menu-button,
.mobile-nav {
    display: none;
}

/* General typography */

h1,
h2,
h3,
h4 {
    margin: 0;
    font-family: "Plus Jakarta Sans", sans-serif;
}

h2 {
    font-size: 32px;
    line-height: 1.3;
    font-weight: 600;
}

h3 {
    font-size: 24px;
    line-height: 1.4;
    font-weight: 600;
}

p {
    margin: 0;
}

.eyebrow {
    display: inline-block;
    margin-bottom: 8px;
    color: var(--primary);
    font-size: 12px;
    line-height: 1.2;
    letter-spacing: 0.12em;
    font-weight: 600;
    text-transform: uppercase;
}

/* Hero */

.hero {
    position: relative;
    min-height: 800px;
    margin-top: 0;
    display: flex;
    align-items: center;
    overflow: hidden;
}

.hero-background,
.hero-image,
.hero-overlay {
    position: absolute;
    inset: 0;
}

.hero-background {
    z-index: 0;
    background: #d9eaff;
}

.hero-image {
    background-image: url("./../assets/banner.jpg");
    background-size: cover;
    background-position: center;
}

.hero-overlay {
    background: linear-gradient(90deg, rgba(9, 29, 46, 0.82), rgba(9, 29, 46, 0.5), transparent);
}

.hero-content {
    position: relative;
    z-index: 1;
    padding-top: 80px;
}

.hero-copy {
    max-width: 680px;
    color: var(--white);
}

.hero-copy h1 {
    margin-bottom: 24px;
    font-size: 48px;
    line-height: 1.2;
    letter-spacing: -0.02em;
    font-weight: 700;
    text-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
}

.hero-copy p {
    max-width: 600px;
    margin-bottom: 48px;
    color: rgba(255, 255, 255, 0.9);
    font-size: 18px;
    line-height: 1.6;
}

.hero-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 16px;
}

/* Sections */

.section {
    position: relative;
    padding: var(--section-space) 0;
}

.section-white {
    background: var(--surface);
}

.section-mint {
    background: var(--surface-mint);
}

.about-grid {
    display: grid;
    grid-template-columns: 5fr 7fr;
    gap: 48px;
    align-items: center;
}

.about-copy p {
    color: var(--text-muted);
    font-size: 18px;
    line-height: 1.6;
}

.about-copy p + p {
    margin-top: 16px;
}

.highlight-text {
    padding: 8px 0 8px 24px;
    border-left: 2px solid var(--primary);
}

/* Footprints */

.footprints-section {
    overflow: hidden;
}

.section-content {
    position: relative;
    z-index: 1;
}

.decor {
    position: absolute;
    border-radius: 50%;
    pointer-events: none;
    filter: blur(80px);
}

.decor-green {
    width: 384px;
    height: 384px;
    top: 0;
    right: 0;
    background: rgba(126, 251, 164, 0.2);
    transform: translate(33%, -50%);
}

.decor-blue {
    width: 320px;
    height: 320px;
    bottom: 0;
    left: 0;
    background: rgba(52, 152, 219, 0.1);
    transform: translate(-33%, 50%);
}

.section-heading {
    max-width: 680px;
    margin: 0 auto 80px;
    text-align: center;
}

.section-heading h2 {
    margin-bottom: 16px;
}

.section-heading p {
    color: var(--text-muted);
    font-size: 16px;
}

.cards-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 48px;
}

.info-card {
    padding: 48px;
    background: var(--surface);
    border: 1px solid #cee9d9;
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    transition: transform 0.3s ease;
}

.info-card:hover {
    transform: translateY(-4px);
}

.icon-circle {
    width: 64px;
    height: 64px;
    margin-bottom: 24px;
    display: grid;
    place-items: center;
    border-radius: 50%;
    background: var(--surface-mint);
}

.icon-circle .material-symbols-outlined {
    color: var(--primary);
    font-size: 32px;
}

.icon-circle.water {
    background: #eff7ff;
}

.icon-circle.water .material-symbols-outlined {
    color: var(--water-blue);
}

.info-card h3 {
    margin-bottom: 16px;
}

.info-card p {
    margin-bottom: 24px;
    color: var(--text-muted);
    font-size: 16px;
}

.card-link {
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--primary);
    font-size: 14px;
    line-height: 1.2;
    font-weight: 600;
}

.card-link .material-symbols-outlined {
    font-size: 18px;
}

.water-link {
    color: var(--water-blue);
}

/* Services */

.services-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 80px;
    align-items: center;
}

.service-list {
    display: flex;
    flex-direction: column;
    gap: 48px;
}

.services-grid > div:first-child h2 {
    margin-bottom: 48px;
}

.service-item {
    display: flex;
    gap: 24px;
}

.service-icon {
    flex: 0 0 48px;
    width: 48px;
    height: 48px;
    margin-top: 4px;
    display: grid;
    place-items: center;
    border-radius: 8px;
    background: var(--surface-mint);
}

.service-icon .material-symbols-outlined {
    color: var(--primary);
    font-size: 24px;
}

.service-item h3 {
    margin-bottom: 8px;
    font-size: 20px;
}

.service-item p {
    color: var(--text-muted);
    font-size: 16px;
}

.service-image {
    position: relative;
    width: 100%;
    height: 500px;
    overflow: hidden;
    border-radius: var(--radius-lg);
    box-shadow: 0 16px 36px rgba(0, 109, 55, 0.08);
}

.service-image-bg {
    position: absolute;
    inset: 0;
    background-image: url("./../assets/services.png");
    background-size: cover;
    background-position: center;
}

.service-image::after {
    content: "";
    position: absolute;
    inset: 0;
    background: rgba(0, 109, 55, 0.1);
    mix-blend-mode: multiply;
}

.sustainability-box {
    position: absolute;
    z-index: 2;
    right: 16px;
    bottom: 16px;
    left: 16px;
    padding: 16px;
    border: 1px solid #cee9d9;
    border-radius: 12px;
    background: rgba(247, 249, 255, 0.9);
    backdrop-filter: blur(12px);
}

.sustainability-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 16px;
    font-size: 14px;
    font-weight: 600;
}

.sustainability-header strong {
    color: var(--primary);
}

.progress {
    width: 100%;
    height: 8px;
    overflow: hidden;
    border-radius: 999px;
    background: var(--surface-mint);
}

.progress-bar {
    position: relative;
    width: 75%;
    height: 100%;
    border-radius: inherit;
    background: var(--secondary);
    overflow: hidden;
}

.progress-bar::after {
    content: "";
    position: absolute;
    inset: 0;
    background: rgba(255, 255, 255, 0.2);
    animation: pulse 2s infinite;
}

@keyframes pulse {
    50% {
        opacity: 0.35;
    }
}

/* Footer */
/* ==========================================
   FOOTER
   ========================================== */

.site-footer {
    width: 100%;

    padding: 48px 0 28px;

    background: var(--surface-mint);
 
}


.footer-content {
    display: flex;

    flex-direction: column;

    align-items: center;

    justify-content: center;

    text-align: center;
}


/* Logo */

.footer-logo {
    display: inline-flex;

    align-items: center;
    justify-content: center;

    margin-bottom: 28px;

    transition:
        transform 0.2s ease,
        opacity 0.2s ease;
}

.footer-logo:hover {
    transform: translateY(-2px);

    opacity: 0.9;
}

.footer-logo img {
    display: block;

    width: auto;

    height: 72px;

    object-fit: contain;
}


/* Copyright */

.copyright {
    width: 100%;

    margin: 0; 

    border-top: 1px solid rgba(178, 205, 189, 0.25);

    color: var(--text-muted);

    text-align: center;

    font-size: 12px;

    line-height: 1.5;
}


/* Mobil */

@media (max-width: 640px) {

    .site-footer {
        padding: 40px 0 24px;
    }

    .footer-logo img {
        height: 60px;
    }

    .footer-logo {
        margin-bottom: 24px;
    }

    .copyright { 

        font-size: 11px;
    }
}

.newsletter-form {
    display: flex;
    flex-direction: column;
    gap: 8px;
    margin-top: 8px;
}

.newsletter-form input {
    width: 100%;
    min-height: 40px;
    padding: 8px 12px;
    border: 1px solid var(--outline);
    border-radius: 8px;
    outline: none;
    background: var(--surface);
    color: var(--text);
    font-size: 12px;
}

.newsletter-form input:focus {
    border-color: var(--primary);
}

.newsletter-form .btn {
    width: 100%;
    min-height: 40px;
}

.contact-item {
    display: flex;
    align-items: flex-start;
    gap: 8px;
    margin-bottom: 10px;
    color: var(--text-muted);
    font-size: 12px;
}

.contact-item .material-symbols-outlined {
    color: var(--primary);
    font-size: 18px;
}

.copyright {  
    border-top: 1px solid rgba(178, 205, 189, 0.2);
    color: var(--text-muted);
    text-align: center;
    font-size: 12px;
}

/* Responsive */

@media (max-width: 900px) {
    :root {
        --section-space: 64px;
    }

    .main-nav {
        display: none;
    }

    .mobile-menu-button {
        width: 36px;
        height: 36px;
        display: grid;
        place-items: center;
        background: transparent;
        color: var(--primary);
    }

    .mobile-nav {
        display: none;
        flex-direction: column;
        gap: 4px;
        padding: 12px 24px 20px;
        background: rgba(247, 249, 255, 0.97);
        border-top: 1px solid rgba(188, 202, 188, 0.3);
    }

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

    .mobile-nav a {
        padding: 12px 8px;
        color: var(--text-muted);
        font-weight: 600;
    }

    .mobile-nav a:hover {
        color: var(--primary);
    }

    .hero {
        min-height: 700px;
    }

    .hero-copy h1 {
        font-size: 40px;
    }

    .about-grid,
    .services-grid {
        grid-template-columns: 1fr;
        gap: 48px;
    }

    .cards-grid {
        gap: 24px;
    }

    .footer-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 640px) {
    .container {
        width: min(100% - 32px, var(--container));
    }

    .header-inner {
        min-height: 68px;
    }

    .brand span {
        font-size: 16px;
    }

    .brand img {
        height: 28px;
    }

    .profile-button {
        display: none;
    }

    .header-actions {
        gap: 8px;
    }

    .btn-small {
        min-height: 34px;
        padding: 7px 12px;
    }

    .hero {
        min-height: 640px;
    }

    .hero-content {
        padding-top: 60px;
    }

    .hero-copy h1 {
        font-size: 30px;
    }

    .hero-copy p {
        margin-bottom: 32px;
        font-size: 16px;
    }

    .hero-actions {
        flex-direction: column;
        align-items: stretch;
    }

    .hero-actions .btn {
        width: 100%;
    }

    h2 {
        font-size: 24px;
    }

    .about-copy p {
        font-size: 16px;
    }

    .section-heading {
        margin-bottom: 48px;
    }

    .cards-grid {
        grid-template-columns: 1fr;
    }

    .info-card {
        padding: 28px;
    }

    .service-list {
        gap: 32px;
    }

    .service-item {
        gap: 16px;
    }

    .service-image {
        height: 380px;
    }

    .footer-grid {
        grid-template-columns: 1fr;
        gap: 32px;
    }

    .site-footer {
        padding-top: 64px;
    }

    .copyright {
        margin-top: 48px;
    }
}

/* ==========================================
   CONTACT SECTION
   ========================================== */

.contact-section {
    position: relative;
    background: var(--surface-mint);
    overflow: hidden;
}

.contact-section::before {
    content: "";
    position: absolute;
    width: 420px;
    height: 420px;
    top: -180px;
    right: -140px;
    border-radius: 50%;
    background: rgba(126, 251, 164, 0.16);
    filter: blur(80px);
    pointer-events: none;
}

.contact-section::after {
    content: "";
    position: absolute;
    width: 360px;
    height: 360px;
    bottom: -180px;
    left: -140px;
    border-radius: 50%;
    background: rgba(52, 152, 219, 0.08);
    filter: blur(90px);
    pointer-events: none;
}


/* Ana grid */

.contact-grid {
    position: relative;
    z-index: 1;

    display: grid;
    grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);

    gap: 80px;

    align-items: center;
}


/* ==========================================
   SOL TARAF
   ========================================== */

.contact-intro {
    max-width: 560px;
}

.contact-intro .eyebrow {
    margin-bottom: 12px;
}

.contact-intro h2 {
    margin-bottom: 20px;

    color: var(--text);

    font-family: "Plus Jakarta Sans", sans-serif;
    font-size: 36px;
    line-height: 1.25;
    font-weight: 600;
}

.contact-intro > p {
    max-width: 520px;

    color: var(--text-muted);

    font-size: 16px;
    line-height: 1.7;
}


/* ==========================================
   İLETİŞİM BİLGİLERİ
   ========================================== */

.contact-details {
    display: flex;
    flex-direction: column;

    gap: 16px;

    margin-top: 36px;
}

.contact-detail {
    display: flex;
    align-items: center;

    gap: 16px;

    padding: 14px 16px;

    border: 1px solid rgba(188, 202, 188, 0.45);
    border-radius: 12px;

    background: rgba(255, 255, 255, 0.55);

    transition:
        transform 0.2s ease,
        background 0.2s ease,
        box-shadow 0.2s ease;
}

.contact-detail:hover {
    transform: translateX(4px);

    background: rgba(255, 255, 255, 0.9);

    box-shadow: 0 8px 20px rgba(0, 109, 55, 0.06);
}

.contact-detail-icon {
    width: 46px;
    height: 46px;

    flex: 0 0 46px;

    display: grid;
    place-items: center;

    border-radius: 12px;

    background: var(--white);

    color: var(--primary);

    box-shadow: 0 4px 12px rgba(0, 109, 55, 0.08);
}

.contact-detail-icon .material-symbols-outlined {
    font-size: 22px;
}

.contact-detail strong {
    display: block;

    margin-bottom: 2px;

    color: var(--text);

    font-size: 14px;
    font-weight: 600;
}

.contact-detail > div:last-child > span {
    display: block;

    color: var(--text-muted);

    font-size: 14px;
}


/* ==========================================
   FORM KARTI
   ========================================== */

.contact-form {
    width: 100%;

    padding: 36px;

    border: 1px solid rgba(188, 202, 188, 0.55);
    border-radius: 20px;

    background: rgba(255, 255, 255, 0.92);

    box-shadow:
        0 20px 50px rgba(0, 109, 55, 0.07),
        0 2px 8px rgba(0, 0, 0, 0.02);

    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
}


/* ==========================================
   FORM SATIRLARI
   ========================================== */

.form-row {
    display: grid;

    grid-template-columns: repeat(2, minmax(0, 1fr));

    gap: 20px;
}


/* ==========================================
   FORM GRUPLARI
   ========================================== */

.form-group {
    display: flex;
    flex-direction: column;

    gap: 8px;

    margin-bottom: 20px;
}

.form-group label {
    color: var(--text);

    font-size: 13px;
    font-weight: 600;
}


/* ==========================================
   INPUT / SELECT / TEXTAREA
   ========================================== */

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;

    box-sizing: border-box;

    border: 1px solid #cbd8ce;
    border-radius: 10px;

    outline: none;

    background: #f8fbf9;

    color: var(--text);

    font-family: "Inter", sans-serif;
    font-size: 14px;

    transition:
        border-color 0.2s ease,
        background 0.2s ease,
        box-shadow 0.2s ease,
        transform 0.2s ease;
}


/* Input ve select */

.form-group input,
.form-group select {
    height: 48px;

    padding: 0 14px;
}


/* Textarea */

.form-group textarea {
    min-height: 140px;

    padding: 13px 14px;

    line-height: 1.5;

    resize: vertical;
}


/* Placeholder */

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: #89968e;

    opacity: 1;
}


/* Focus */

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    border-color: var(--primary);

    background: #ffffff;

    box-shadow:
        0 0 0 3px rgba(0, 109, 55, 0.08);
}


/* Hover */

.form-group input:hover,
.form-group select:hover,
.form-group textarea:hover {
    border-color: #a9bbae;
}


/* Select */

.form-group select {
    cursor: pointer;

    appearance: none;
    -webkit-appearance: none;

    background-image:
        linear-gradient(45deg, transparent 50%, #006d37 50%),
        linear-gradient(135deg, #006d37 50%, transparent 50%);

    background-position:
        calc(100% - 18px) 20px,
        calc(100% - 13px) 20px;

    background-size:
        5px 5px,
        5px 5px;

    background-repeat: no-repeat;

    padding-right: 40px;
}


/* ==========================================
   CHECKBOX / ONAY
   ========================================== */

.consent {
    display: flex;

    align-items: flex-start;

    gap: 10px;

    margin-top: 2px;
    margin-bottom: 22px;

    color: var(--text-muted);

    font-size: 12px;
    line-height: 1.5;

    cursor: pointer;
}

.consent input {
    width: 17px;
    height: 17px;

    flex: 0 0 17px;

    margin: 1px 0 0;

    accent-color: var(--primary);

    cursor: pointer;
}


/* ==========================================
   GÖNDER BUTONU
   ========================================== */

.submit-button {
    width: 100%;

    min-height: 48px;

    display: flex;
    align-items: center;
    justify-content: center;

    gap: 8px;

    border-radius: 10px;

    font-size: 14px;
    font-weight: 600;
}

.submit-button .material-symbols-outlined {
    font-size: 19px;
}


/* ==========================================
   FORM MESAJI
   ========================================== */

.form-message {
    min-height: 20px;

    margin-top: 14px;

    color: var(--primary);

    text-align: center;

    font-size: 13px;
    font-weight: 600;
}

.form-message.error {
    color: #ba1a1a;
}

.form-message.success {
    color: var(--primary);
}


/* ==========================================
   RESPONSIVE
   ========================================== */

@media (max-width: 1000px) {

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

        gap: 50px;
    }

    .contact-intro {
        max-width: 700px;
    }

    .contact-form {
        max-width: 700px;
    }
}


@media (max-width: 640px) {

    .contact-intro h2 {
        font-size: 28px;
    }

    .contact-intro > p {
        font-size: 15px;
    }

    .contact-form {
        padding: 24px;

        border-radius: 16px;
    }

    .form-row {
        grid-template-columns: 1fr;

        gap: 0;
    }

    .contact-detail {
        padding: 12px;
    }

    .contact-detail-icon {
        width: 42px;
        height: 42px;

        flex-basis: 42px;
    }

    .form-group input,
    .form-group select {
        height: 46px;
    }
}