:root {
    --bg-dark: #050505;
    --text-main: #ffffff;
    --text-sub: rgba(255, 255, 255, 0.5);
    --accent: #4ade80;
    --border: rgba(255, 255, 255, 0.08);
    --glass-bg: rgba(10, 10, 10, 0.4);
    --transition: 1.2s cubic-bezier(0.77, 0, 0.175, 1);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: "Poppins", sans-serif;
    font-weight: 300;
}

h1,
h2,
h3,
h4,
h5,
h6 {
    font-family: "Montserrat", sans-serif;
    font-weight: 600 !important;
    letter-spacing: -0.5px; /* Montserrat için daha sıkı ve modern bir görünüm */
}

b,
strong {
    font-weight: 500 !important;
}

body,
html {
    min-height: 100vh;
    overflow-x: hidden;
    background-color: var(--bg-dark);
    color: var(--text-main);
}

a {
    text-decoration: none;
}

/* PRELOADER */
#preloader {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--bg-dark);
    z-index: 9999;
    display: flex;
    justify-content: center;
    align-items: center;
    transition:
        opacity 1s ease,
        visibility 1s;
}
#preloader.loaded {
    opacity: 0;
    visibility: hidden;
}
.loader-icon {
    font-size: 40px;
    color: var(--accent);
    animation: loaderPulse 2s infinite;
    text-shadow: 0 0 20px rgba(74, 222, 128, 0.4);
}
@keyframes loaderPulse {
    0% {
        opacity: 0.3;
        transform: scale(0.9);
    }
    50% {
        opacity: 1;
        transform: scale(1.1);
    }
    100% {
        opacity: 0.3;
        transform: scale(0.9);
    }
}

/* GRAIN OVERLAY */
.grain-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: url("https://grainy-gradients.vercel.app/noise.svg");
    opacity: 0.06;
    pointer-events: none;
    z-index: 50;
}

/* SIDEBAR */
.sidebar {
    position: fixed;
    left: 0;
    top: 0;
    bottom: 0;
    width: 90px;
    background: var(--glass-bg);
    backdrop-filter: blur(15px);
    -webkit-backdrop-filter: blur(15px);
    border-right: 1px solid var(--border);
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    align-items: center;
    padding: 40px 0;
    z-index: 1000;
}
@media (max-width: 991px) {
    .sidebar {
        display: none;
    }
}

.logo-area i {
    font-size: 28px;
    color: var(--text-main);
    transition: 0.4s;
}
.logo-area i:hover {
    color: var(--accent);
    transform: scale(1.1);
    text-shadow: 0 0 15px rgba(74, 222, 128, 0.5);
}

.social-middle {
    display: flex;
    flex-direction: column;
    gap: 35px;
    font-size: 18px;
}
.social-middle i {
    color: var(--text-main);
    opacity: 0.4;
    transition: 0.4s;
    cursor: pointer;
}
.social-middle i:hover {
    opacity: 1;
    color: var(--accent);
    transform: translateY(-3px);
}

.contact-bottom {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 20px;
}
.sidebar-contact-text {
    writing-mode: vertical-rl;
    transform: rotate(180deg);
    font-size: 10px;
    letter-spacing: 3px;
    color: var(--text-sub);
    margin-bottom: 10px;
    transition: 0.4s;
    font-weight: 500;
}
.contact-bottom i {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.03);
    color: var(--text-main);
    font-size: 16px;
    transition: 0.4s;
    cursor: pointer;
    border: 1px solid var(--border);
}
.contact-bottom i:hover {
    background: var(--text-main);
    color: var(--bg-dark);
    transform: translateY(-5px);
    box-shadow: 0 5px 15px rgba(255, 255, 255, 0.2);
}
.contact-bottom:hover .sidebar-contact-text {
    color: var(--text-main);
    letter-spacing: 4px;
}

/* HEADER */
header {
    position: fixed;
    top: 0;
    right: 0;
    left: 90px;
    height: 100px;
    z-index: 1100;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 60px;
}
@media (max-width: 991px) {
    header {
        left: 0;
        padding: 0 30px;
    }
}

.menu-btn {
    background: none;
    border: none;
    cursor: pointer;
    padding: 15px;
    display: flex;
    align-items: center;
    gap: 15px;
}
.menu-text {
    color: var(--text-main);
    font-size: 12px;
    letter-spacing: 2px;
    font-weight: 500;
    transition: 0.3s;
}
.hamburger {
    display: flex;
    flex-direction: column;
    align-items: flex-end;
}
.hamburger span {
    width: 30px;
    height: 1px;
    background: var(--text-main);
    display: block;
    margin-bottom: 8px;
    transition: 0.4s cubic-bezier(0.77, 0, 0.175, 1);
}
.hamburger span:nth-child(2) {
    width: 20px;
}
.menu-btn:hover .hamburger span {
    width: 30px;
    background: var(--accent);
}
.menu-btn:hover .menu-text {
    color: var(--accent);
}

/* MINIMAL PREMIUM OVERLAY MENÜ */
.overlay-menu {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(5, 5, 5, 0.98);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    z-index: 2000;
    transform: translateY(-100%);
    transition: 1s cubic-bezier(0.77, 0, 0.175, 1);
    overflow-y: auto;
    color: var(--text-main);
    display: flex;
    flex-direction: column;
}
.overlay-menu.active {
    transform: translateY(0);
}

.close-btn {
    position: absolute;
    top: 40px;
    right: 60px;
    font-size: 35px;
    font-weight: 300;
    cursor: pointer;
    color: var(--text-main);
    transition: 0.4s;
    display: flex;
    align-items: center;
    gap: 15px;
    z-index: 10;
}
.close-btn span {
    font-size: 12px;
    letter-spacing: 2px;
    text-transform: uppercase;
    font-family: "Poppins", sans-serif;
}
.close-btn:hover {
    color: var(--accent);
}
.close-btn:hover i {
    transform: rotate(90deg);
}

.menu-items {
    margin-top: 20px;
}
.menu-items li {
    overflow: hidden;
    margin-bottom: 25px;
}
.menu-items a {
    color: var(--text-sub);
    font-family: "Montserrat", sans-serif; /* Montserrat'a güncellendi */
    font-size: clamp(24px, 3vw, 40px);
    display: inline-block;
    transition: 0.5s cubic-bezier(0.77, 0, 0.175, 1);
    position: relative;
    transform: translateY(100%);
    opacity: 0;
    padding-bottom: 5px;
    font-weight: 500; /* Menü linkleri için biraz daha tok bir görünüm */
}

.menu-items a::after {
    content: "";
    position: absolute;
    left: 0;
    bottom: 0;
    width: 0;
    height: 1px;
    background: var(--text-main);
    transition: 0.5s cubic-bezier(0.77, 0, 0.175, 1);
}

.overlay-menu.active .menu-items a {
    transform: translateY(0);
    opacity: 1;
}
.overlay-menu.active .menu-items li:nth-child(1) a {
    transition-delay: 0.2s;
}
.overlay-menu.active .menu-items li:nth-child(2) a {
    transition-delay: 0.3s;
}
.overlay-menu.active .menu-items li:nth-child(3) a {
    transition-delay: 0.4s;
}
.overlay-menu.active .menu-items li:nth-child(4) a {
    transition-delay: 0.5s;
}
.overlay-menu.active .menu-items li:nth-child(5) a {
    transition-delay: 0.6s;
}

.menu-items a:hover {
    color: var(--text-main);
    transform: translateX(10px);
}
.menu-items a:hover::after {
    width: 100%;
}

.menu-right-content {
    border-left: 1px solid rgba(255, 255, 255, 0.05);
    padding-left: 80px;
    height: 100%;
    display: flex;
    flex-direction: column;
    justify-content: center;
}
@media (max-width: 991px) {
    .menu-right-content {
        border-left: none;
        border-top: 1px solid rgba(255, 255, 255, 0.05);
        padding-top: 40px;
        margin-top: 40px;
        padding-left: 0;
    }
}

.menu-right-content h3 {
    color: var(--text-main);
    font-size: 26px;
    margin-bottom: 15px;
}
.menu-right-content p {
    color: var(--text-sub);
    font-size: 13px;
    line-height: 1.8;
    letter-spacing: 0.5px;
}

.c-btn {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    padding: 12px 25px;
    border-radius: 4px;
    text-decoration: none;
    font-size: 11px;
    letter-spacing: 1.5px;
    font-weight: 500;
    text-transform: uppercase;
    transition: 0.4s;
    border: 1px solid rgba(255, 255, 255, 0.15);
    color: var(--text-main);
    background: transparent;
    position: relative;
    overflow: hidden;
    font-family: "Montserrat", sans-serif;
}
.c-btn::before {
    content: "";
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: var(--text-main);
    transition: 0.4s;
    z-index: -1;
}
.c-btn:hover::before {
    left: 0;
}
.c-btn:hover {
    color: var(--bg-dark);
    border-color: var(--text-main);
}

/* MENU FOOTER */
.menu-footer {
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    padding: 30px 0;
    opacity: 0;
    transform: translateY(20px);
    transition: 1s ease 0.8s;
}
.overlay-menu.active .menu-footer {
    opacity: 1;
    transform: translateY(0);
}
.menu-copy {
    font-size: 11px;
    letter-spacing: 1.5px;
    color: var(--text-sub);
    text-transform: uppercase;
}
.menu-socials a {
    color: var(--text-main);
    font-size: 16px;
    transition: 0.3s;
    opacity: 0.5;
}
.menu-socials a:hover {
    opacity: 1;
    color: var(--text-main);
    transform: translateY(-3px);
}

/* FOOTER */
.global-footer {
    position: fixed;
    bottom: 0;
    left: 90px;
    right: 0;
    height: 100px;
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 60px;
    color: var(--text-sub);
    font-size: 10px;
    pointer-events: none;
    letter-spacing: 1px;
}
@media (max-width: 991px) {
    .global-footer {
        left: 0;
        padding: 0 30px;
        font-size: 8px;
    }
    .scroll-indicator {
        display: none !important;
    }
}
.global-footer div {
    pointer-events: auto;
}

.scroll-indicator {
    display: flex;
    align-items: center;
    gap: 15px;
    opacity: 0.6;
    transition: 0.3s;
}
.scroll-indicator:hover {
    opacity: 1;
    color: var(--text-main);
}
.mouse {
    width: 22px;
    height: 34px;
    border: 1px solid rgba(255, 255, 255, 0.5);
    border-radius: 12px;
    position: relative;
}
.wheel {
    width: 2px;
    height: 6px;
    background: var(--text-main);
    position: absolute;
    top: 6px;
    left: 50%;
    transform: translateX(-50%);
    border-radius: 2px;
    animation: scroll-anim 2s infinite;
}
@keyframes scroll-anim {
    0% {
        opacity: 1;
        top: 6px;
    }
    100% {
        opacity: 0;
        top: 20px;
    }
}