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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Poppins', sans-serif;
    color: #000;
    line-height: 1.6;
    background-color: #fff;
    font-weight: 300;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 80px 20px;
}

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

/* Tipografi */
h1, h2, h3 {
    font-size: 3rem;
    font-weight: 300;
    line-height: 1;
    margin-bottom: 2rem;
    letter-spacing: -0.2rem;
}

h1 span, h2 span, h3 span {
    font-weight: 700;
}

/* Header */
header {
    padding: 40px 0;
    border-bottom: 1px solid #eee;
    position: sticky;
    top: 0;
    z-index: 10;
    background: #fff;
    transition: padding 0.3s ease, box-shadow 0.3s ease;
}

header.is-sticky {
    padding: 18px 0;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.06);
}

.nav-container {
    padding: 0 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 2rem;
    font-weight: 700;
}

.logo img {
    display: block;
    height: 48px;
    width: auto;
    transition: height 0.3s ease;
}

header.is-sticky .logo img {
    height: 36px;
}

nav ul {
    display: flex;
    list-style: none;
}

nav ul li {
    margin-left: 30px;
}

nav ul li a {
    text-decoration: none;
    color: #000;
    font-size: 0.9rem;
}

nav ul li a.active-link {
    font-weight: 700;
}

/* Hero Section */
.hero {
    position: relative;
    height: 80vh;
    display: flex;
    align-items: flex-start;
    padding: 100px 10%;
    color: #fff;
    overflow: hidden;
}

.hero::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, rgba(0, 0, 0, 0.12) 0%, rgba(0, 0, 0, 0.45) 100%);
    z-index: 1;
}

.hero-slides {
    position: absolute;
    inset: 0;
}

.hero-slide {
    position: absolute;
    inset: 0;
    background-position: center;
    background-size: cover;
    opacity: 0;
    transform: scale(1.02);
    transition: opacity 0.8s ease, transform 5s ease;
}

.hero-slide.is-active {
    opacity: 1;
    transform: scale(1);
}

.hero-content,
.hero-pagination {
    position: relative;
    z-index: 2;
}

.hero-content {
    max-width: 320px;
}

.hero-content p {
    max-width: 320px;
    font-size: 0.8rem;
}

.hero-button {
    display: inline-block;
    margin-top: 24px;
    padding: 10px 20px;
    border: 1px solid #fff;
    border-radius: 0;
    background: transparent;
    color: #fff;
    text-decoration: none;
    font-size: 0.8rem;
}

.hero-button strong {
    font-weight: 700;
}

.section-link,
.project-link-button {
    display: inline-block;
    padding: 10px 20px;
    border: 1px solid #000;
    color: #000;
    text-decoration: none;
    font-size: 0.8rem;
    background: transparent;
}

.section-link strong,
.project-link-button strong {
    font-weight: 700;
}

.partner-preview {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
    margin-top: 36px;
    flex-wrap: wrap;
}

.partner-preview-logos {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
}

.placeholder-logo {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 160px;
    height: 92px;
    padding: 12px 18px;
    border: 1px solid #d7d7d7;
    background: linear-gradient(180deg, #fafafa 0%, #f1f1f1 100%);
    color: #111;
    font-size: 0.75rem;
    font-weight: 400;
    letter-spacing: 0.12rem;
    text-transform: uppercase;
}

.placeholder-logo.small {
    min-width: 112px;
    height: 64px;
    font-size: 0.62rem;
}

.hero-pagination {
    position: absolute;
    left: 10%;
    bottom: 48px;
    display: flex;
    gap: 10px;
}

.hero-dot {
    width: 34px;
    height: 2px;
    border: 0;
    padding: 0;
    background: rgba(255, 255, 255, 0.35);
    cursor: pointer;
    transition: background-color 0.3s ease, transform 0.3s ease;
}

.hero-dot.is-active {
    background: #fff;
    transform: scaleX(1.15);
}

.hero-content h1 {
    color: #fff;
}

/* Detail Grid */
.detail-grid {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: 40px;
    margin-bottom: 40px;
}

.blueprints {
    display: flex;
    gap: 10px;
    margin-top: 20px;
}

.gallery-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 15px;
}

/* Project Lists */
.grid-4 {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
}

.projects-list-header {
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
    gap: 24px;
    margin-bottom: 2rem;
}

.project-card {
    position: relative;
    overflow: hidden;
}

.project-card a {
    display: block;
    color: inherit;
    text-decoration: none;
}

.project-card img {
    width: 100%;
    height: 350px;
    object-fit: cover;
    filter: grayscale(0%);
    transition: 0.3s;
}

.project-card:hover img {
    filter: grayscale(100%);
}

.project-card h4 {
    background: #000;
    color: #fff;
    padding: 10px;
    font-size: 0.8rem;
    text-align: center;
}

.page-hero {
    position: relative;
    min-height: 56vh;
    display: flex;
    align-items: flex-end;
    padding: 120px 10% 72px;
    color: #fff;
    background-position: center;
    background-size: cover;
    overflow: hidden;
}

.page-hero::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, rgba(0, 0, 0, 0.14) 0%, rgba(0, 0, 0, 0.52) 100%);
}

.page-hero-content {
    position: relative;
    z-index: 1;
    max-width: 520px;
}

.page-hero-content p {
    max-width: 420px;
    font-size: 0.9rem;
}

.about-story {
    display: grid;
    grid-template-columns: 1.1fr 1.5fr;
    gap: 48px;
    align-items: start;
    margin-top: 56px;
}

.about-intro-copy p {
    max-width: 460px;
    font-size: 0.95rem;
}

.partner-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.partner-card {
    padding: 28px;
    border: 1px solid #e5e5e5;
    background: #fbfbfb;
}

.partner-card h3 {
    margin-top: 24px;
    margin-bottom: 18px;
    font-size: 1.35rem;
    letter-spacing: -0.06rem;
}

.partner-card p {
    font-size: 0.9rem;
}

.project-detail-title {
    margin-bottom: 2rem;
}

.project-page-detail {
    padding-top: 40px;
}

.project-page-detail .detail-main-img img,
.project-detail .detail-main-img img,
.gallery-grid img,
.blueprints img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.project-page-detail .detail-main-img {
    min-height: 520px;
}

/* Contact Section */
.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
}

.contact-page-grid {
    align-items: start;
}

.contact-page-grid .contact-form h2 {
    margin-bottom: 2rem;
}

.contact-social {
    margin-top: 32px;
}

.contact-social p {
    margin-bottom: 16px;
    font-size: 0.85rem;
    letter-spacing: 0.08rem;
    text-transform: uppercase;
}

.contact-social .footer-social a {
    border-color: rgba(0, 0, 0, 0.18);
    color: #000;
}

.contact-social .footer-social a:hover {
    border-color: #000;
    background: rgba(0, 0, 0, 0.04);
}

form input, form textarea {
    width: 100%;
    padding: 15px;
    margin-bottom: 15px;
    border: 1px solid #ddd;
    font-family: inherit;
}

form button {
    background: #000;
    color: #fff;
    padding: 15px 40px;
    border: none;
    cursor: pointer;
}

/* Footer */
footer {
    background: #000;
    color: #fff;
    padding: 60px 0;
}

.footer-content {
    display: grid;
    grid-template-columns: 1fr 1fr 1fr 1fr;
    gap: 32px;
    align-items: start;
    padding: 0 20px;
}

.footer-logo {
    font-size: 1.5rem;
    font-weight: 700;
}

.footer-logo img {
    display: block;
    height: 40px;
    width: auto;
    filter: brightness(0) invert(1);
}

.footer-column {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.footer-info p,
.footer-contact a {
    color: #fff;
    text-decoration: none;
    font-size: 0.9rem;
    line-height: 1.8;
}

.footer-menu {
    align-items: flex-start;
}

.footer-links {
    display: flex;
    flex-direction: row;
    gap: 20px;
}

.footer-links a {
    color: #fff;
    text-decoration: none;
    font-size: 0.8rem;
}

.footer-social {
    display: flex;
    gap: 12px;
    margin-top: 16px;
}

.footer-social a {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 34px;
    height: 34px;
    border: 1px solid rgba(255, 255, 255, 0.25);
    border-radius: 50%;
    color: #fff;
    transition: border-color 0.3s ease, background-color 0.3s ease;
}

.footer-social a:hover {
    border-color: #fff;
    background: rgba(255, 255, 255, 0.08);
}

.footer-social svg {
    width: 16px;
    height: 16px;
    fill: currentColor;
}