:root {
    --bg-black: #000000;
    --zinc-950: #09090b;
    --zinc-900: #18181b;
    --zinc-800: #27272a;
    --zinc-700: #3f3f46;
    --zinc-500: #71717a;
    --zinc-400: #a1a1aa;
    --text-white: #ffffff;
    --transition-smooth: all 0.6s cubic-bezier(0.25, 1, 0.5, 1);
}

body {
    font-family: 'Inter', sans-serif;
    background-color: var(--bg-black);
    color: var(--text-white);
    margin: 0;
    padding: 0;
    overflow-x: hidden;
    position: relative;
}

@media (max-width: 768px) {
    body {
        overflow-y: auto;
        -webkit-overflow-scrolling: touch;
    }
}

html {
    scroll-behavior: smooth;
}

.text-zinc-400 {
    color: var(--zinc-400) !important;
}

.text-zinc-500 {
    color: var(--zinc-500) !important;
}

.bg-zinc-900 {
    background-color: var(--zinc-900) !important;
}

.bg-zinc-950 {
    background-color: var(--zinc-950) !important;
}

.border-zinc-800 {
    border-color: var(--zinc-800) !important;
}

.scrollbar-hide::-webkit-scrollbar {
    display: none;
}

.scrollbar-hide {
    -ms-overflow-style: none;
    scrollbar-width: none;
}

.bg-cover-center {
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
}

.hakkimizda-bg {
    background-image: url('img/hakkimizda-bg.jpg');
}

.danisman-bg {
    background-image: url('img/danisman-bg.jpeg');
}

.yazilim-bg {
    background-image: url('img/Work.jpeg');
}

#preloader {
    position: fixed;
    inset: 0;
    background: #000;
    z-index: 9999;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    transition: opacity 0.5s ease;
}

.spinner {
    width: 50px;
    height: 50px;
    border: 3px solid rgba(255, 255, 255, 0.1);
    border-top-color: #fff;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

.small-spinner {
    width: 36px;
    height: 36px;
}

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}

.navbar {
    padding: 1.5rem 2rem;
    transition: background-color 0.3s, padding 0.3s;
    z-index: 2100;
}

.navbar.scrolled {
    background: rgba(0, 0, 0, 0.85);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    padding: 1rem 2rem;
}

.brand-text {
    display: flex;
    flex-direction: column;
    line-height: 1.1;
}

.brand-title {
    font-size: 1.25rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.18em;
}

.brand-tagline {
    font-size: 0.7rem;
    text-transform: uppercase;
    letter-spacing: 0.16em;
    color: var(--zinc-400);
}

.biz-kimiz-label {
    letter-spacing: 0.2em;
}

.brand-touch {
    cursor: pointer;
}

.nav-actions {
    flex-wrap: wrap;
}

.nav-dropdown-wrapper .dropdown-toggle::after {
    margin-left: 0.35rem;
}

.nav-menu-btn {
    padding-inline: 0.7rem;
    padding-block: 0.4rem;
    border-radius: 999px;
    background-color: transparent;
    border: 1px solid rgba(255, 255, 255, 0.18);
    box-shadow: none;
}

.nav-menu-btn-icon {
    display: inline-block;
    transition: transform 0.35s cubic-bezier(0.22, 1, 0.36, 1);
}

.nav-menu-btn:hover {
    background-color: rgba(15, 23, 42, 0.9);
    border-color: rgba(248, 250, 252, 0.85);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.55);
}

.nav-menu-btn[aria-expanded='true'] .nav-menu-btn-icon {
    transform: rotate(180deg) scale(1.05);
}

.nav-menu-bars {
    display: inline-flex;
    flex-direction: column;
    justify-content: center;
    gap: 4px;
    width: 18px;
    height: 18px;
}

.nav-menu-bars span {
    display: block;
    height: 2px;
    width: 100%;
    background: var(--text-white);
    border-radius: 999px;
    transition: transform 0.3s ease, opacity 0.3s ease;
}

.nav-menu-btn[aria-expanded='true'] .nav-menu-bars span:nth-child(1) {
    transform: translateY(6px) rotate(45deg);
}

.nav-menu-btn[aria-expanded='true'] .nav-menu-bars span:nth-child(2) {
    opacity: 0;
}

.nav-menu-btn[aria-expanded='true'] .nav-menu-bars span:nth-child(3) {
    transform: translateY(-6px) rotate(-45deg);
}

.navbar.hidden-in-about {
    opacity: 0;
    pointer-events: none;
}

.about-hero-inner {
    margin-top: 5.5rem;
}

.nav-dropdown {
    background: rgba(15, 23, 42, 0.97);
    border: 1px solid rgba(148, 163, 184, 0.35);
    min-width: 180px;
    border-radius: 0.75rem;
    padding: 0.35rem 0;
    box-shadow: 0 18px 45px rgba(0, 0, 0, 0.7);
    margin-top: 0.6rem;
}

.nav-dropdown .dropdown-item {
    color: var(--text-white);
    font-size: 0.9rem;
    padding: 0.5rem 1rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.nav-dropdown .dropdown-item:hover {
    background: rgba(39, 39, 42, 0.9);
    color: #fff;
}

.btn-nav {
    border-radius: 999px;
    font-size: 0.9rem;
    padding: 0.55rem 1.4rem;
    display: flex;
    align-items: center;
    border: 1px solid rgba(255, 255, 255, 0.15);
    background-color: rgba(255, 255, 255, 0.08);
    color: var(--text-white);
    backdrop-filter: blur(4px);
    transition: transform 0.2s ease, background 0.2s ease, border 0.2s ease;
}

.btn-nav:hover {
    background-color: rgba(255, 255, 255, 0.15);
    border-color: rgba(255, 255, 255, 0.35);
    transform: translateY(-1px);
}

.btn-nav.ghost {
    font-weight: 500;
}

.btn-nav.primary {
    border-color: rgba(192, 132, 252, 0.6);
    color: #f5f1ff;
}

.btn-nav.primary:hover {
    background-color: rgba(192, 132, 252, 0.2);
    border-color: rgba(192, 132, 252, 0.9);
}

.split-container {
    display: flex;
    height: 100vh;
    width: 100vw;
    flex-direction: column;
    position: relative;
    overflow: hidden;
}

@media (max-width: 768px) {
    .split-container {
        overflow-y: auto;
        -webkit-overflow-scrolling: touch;
    }
}

.split-pane {
    position: relative;
    overflow: hidden;
    transition: var(--transition-smooth);
    cursor: pointer;
    min-height: 50vh;
    display: flex;
    justify-content: center;
    align-items: center;
}

@media (min-width: 768px) {
    .split-container {
        flex-direction: row;
    }

    .split-pane {
        height: 100vh;
        width: 50%;
        min-height: auto;
    }

    .split-container.hover-left .pane-left {
        width: 60%;
    }

    .split-container.hover-left .pane-right {
        width: 40%;
    }

    .split-container.hover-right .pane-right {
        width: 60%;
    }

    .split-container.hover-right .pane-left {
        width: 40%;
    }

    .split-container.active-left .pane-left {
        width: 100%;
        cursor: default;
    }

    .split-container.active-left .pane-right {
        width: 0%;
        opacity: 0;
        pointer-events: none;
    }

    .split-container.active-right .pane-right {
        width: 100%;
        cursor: default;
    }

    .split-container.active-right .pane-left {
        width: 0%;
        opacity: 0;
        pointer-events: none;
    }
}

.bg-layer {
    position: absolute;
    inset: 0;
    transition: transform 1s ease;
    z-index: 0;
    will-change: transform;
    backface-visibility: hidden;
    -webkit-backface-visibility: hidden;
}

.split-pane:hover .bg-layer {
    transform: scale(1.05);
}

@media (max-width: 768px) {
    .bg-layer {
        background-attachment: scroll !important;
        transform: none !important;
        will-change: auto;
        transition: none !important;
        backface-visibility: visible;
        -webkit-backface-visibility: visible;
    }
    
    .split-pane:hover .bg-layer {
        transform: none !important;
    }
    
    .split-pane.active .bg-layer {
        position: absolute;
        height: 100%;
        width: 100%;
        top: 0;
        left: 0;
    }
}

.overlay {
    position: absolute;
    inset: 0;
    z-index: 1;
    transition: background 0.5s;
}

.pane-left .overlay {
    background: rgba(0, 0, 0, 0.45);
}

.pane-left:hover .overlay {
    background: rgba(0, 0, 0, 0.4);
}

.pane-right .overlay {
    background: rgba(88, 28, 135, 0.5);
    mix-blend-mode: multiply;
}

.pane-right:hover .overlay {
    background: rgba(88, 28, 135, 0.4);
}

.pane-content {
    position: relative;
    z-index: 10;
    text-align: center;
    transition: opacity 0.3s, transform 0.3s;
}

.split-subtitle {
    letter-spacing: 0.2em;
}

.split-pane.active .pane-content {
    opacity: 0;
    transform: translateY(-20px);
    pointer-events: none;
}

.detail-view {
    position: absolute;
    inset: 0;
    z-index: 20;
    background: rgba(9, 9, 11, 0.9);
    opacity: 0;
    pointer-events: none;
    overflow-y: auto;
    padding-top: 100px;
    transition: opacity 0.5s ease 0.3s;
}

.split-pane.active .detail-view {
    opacity: 1;
    pointer-events: auto;
}

.back-btn {
    position: absolute;
    top: 100px;
    left: 2rem;
    z-index: 50;
    background: var(--zinc-800);
    color: white;
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 50px;
    padding: 0.5rem 1.2rem;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s;
    display: flex;
    align-items: center;
    gap: 8px;
}

.back-btn:hover {
    background: var(--zinc-700);
}

.split-pane.active .back-btn {
    opacity: 1;
    pointer-events: auto;
}

.custom-card {
    background: rgba(24, 24, 27, 0.5);
    border: 1px solid var(--zinc-800);
    border-radius: 1.5rem;
    overflow: hidden;
    transition: transform 0.3s;
}

.custom-card:hover {
    transform: translateY(-5px);
}

.carousel-control-prev-icon,
.carousel-control-next-icon {
    background-color: var(--zinc-800);
    border-radius: 50%;
    background-size: 50%;
    width: 3rem;
    height: 3rem;
}

.carousel-control-btn {
    width: 2.5rem;
    height: 2.5rem;
    border-radius: 999px;
    border: 1px solid rgba(255, 255, 255, 0.2);
    background: rgba(24, 24, 27, 0.8);
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: background 0.2s ease, border 0.2s ease, transform 0.1s ease;
}

.carousel-control-btn:hover {
    background: rgba(39, 39, 42, 0.95);
    border-color: rgba(255, 255, 255, 0.4);
    transform: translateY(-1px);
}

#about-drawer {
    position: fixed;
    inset: 0;
    background: var(--zinc-950);
    z-index: 2000;
    transform: translateY(100%);
    transition: transform 0.6s cubic-bezier(0.16, 1, 0.3, 1);
    overflow-y: auto;
}

#about-drawer.open {
    transform: translateY(0);
}

.close-btn {
    position: fixed;
    top: 2rem;
    right: 2rem;
    z-index: 2010;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: var(--zinc-800);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    border: none;
    transition: background 0.2s;
}

.close-btn:hover {
    background: white;
    color: black;
}

.marquee-wrapper {
    overflow: hidden;
    white-space: nowrap;
    position: relative;
}

.marquee-content {
    display: inline-flex;
    animation: marquee 80s linear infinite;
}

.marquee-content img {
    height: 70px;
    margin: 0 2.4rem;
    filter: grayscale(100%);
    opacity: 0.6;
    transition: 0.3s;
}

.marquee-content img:hover {
    filter: grayscale(0%);
    opacity: 1;
}

@keyframes marquee {
    0% {
        transform: translateX(0);
    }

    100% {
        transform: translateX(-50%);
    }
}

@media (max-width: 768px) {
    .split-pane.active {
        position: fixed;
        inset: 0;
        z-index: 1100;
        height: 100vh;
        overflow: hidden;
    }
    
    .split-pane.active .bg-layer {
        position: absolute;
        height: 100%;
        width: 100%;
        top: 0;
        left: 0;
        transform: none !important;
    }

    .back-btn {
        top: 80px;
        left: 1rem;
    }

    .detail-view {
        padding-top: 130px;
        padding-left: 1rem;
        padding-right: 1rem;
        padding-bottom: 80px;
        -webkit-overflow-scrolling: touch;
    }

    .software-section {
        padding-bottom: 120px;
    }

    .brand-title {
        font-size: 1.05rem;
    }

    .brand-tagline {
        font-size: 0.6rem;
    }

    .nav-actions {
        width: 100%;
        justify-content: flex-start;
        gap: 0.75rem;
        margin-top: 0.5rem;
    }

    .navbar {
        padding-inline: 1rem;
        padding-block: 0.9rem;
    }

    .nav-menu-btn {
        padding-inline: 0.7rem;
        padding-block: 0.4rem;
    }

    .footer-bar {
        flex-direction: column;
        align-items: flex-start;
        gap: 0.35rem;
        padding-inline: 1rem;
        padding-block: 0.75rem;
    }

    .contact-links {
        flex-direction: column;
        align-items: flex-start;
        gap: 0.25rem;
    }

    .contact-links a {
        font-size: 0.85rem;
    }

    .footer-bar i.bi-c-circle {
        font-size: 0.8rem;
    }

    .about-hero-section {
        padding-inline: 1.5rem;
        padding-top: 5rem;
        padding-bottom: 3rem;
    }

    .about-hero-title {
        font-size: 1.9rem;
    }

    .about-hero-text p {
        font-size: 1rem;
    }

    .software-grid {
        gap: 1.5rem;
    }

    .marquee-content img {
        height: 50px;
        margin: 0 1.5rem;
    }

    .custom-card {
        margin-bottom: 1.5rem;
    }

    .carousel-control-btn {
        width: 2rem;
        height: 2rem;
        font-size: 0.875rem;
    }
}

@media (max-width: 480px) {
    .navbar {
        padding-inline: 0.75rem;
        padding-block: 0.75rem;
    }

    .brand-title {
        font-size: 0.95rem;
    }

    .brand-tagline {
        font-size: 0.55rem;
    }

    .about-hero-title {
        font-size: 1.5rem;
    }

    .about-hero-text p {
        font-size: 0.9rem;
    }

    .detail-view {
        padding-top: 100px;
        padding-left: 0.75rem;
        padding-right: 0.75rem;
        padding-bottom: 70px;
    }

    .software-section {
        padding-bottom: 100px;
    }

    .back-btn {
        top: 70px;
        left: 0.75rem;
        font-size: 0.875rem;
        padding: 0.4rem 1rem;
    }

    .marquee-content img {
        height: 40px;
        margin: 0 1rem;
    }

    .footer-bar {
        padding-inline: 0.75rem;
        padding-block: 0.6rem;
        font-size: 0.75rem;
    }
}

.footer-bar {
    background: rgba(0, 0, 0, 0.05);
    backdrop-filter: blur(8px);
    z-index: 1040;
}

@media (max-width: 768px) {
    .split-pane.active .footer-bar {
        z-index: 1000;
    }
    
    .detail-view {
        z-index: 1101;
    }
}

.btn-soft-ghost {
    background-color: transparent;
    border: 1px solid rgba(148, 163, 184, 0.5);
    color: var(--text-white);
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
    font-weight: 500;
    transition: background 0.2s ease, border 0.2s ease, transform 0.1s ease;
}

.btn-soft-ghost:hover {
    background-color: rgba(15, 23, 42, 0.7);
    border-color: rgba(248, 250, 252, 0.8);
    transform: translateY(-1px);
}

.contact-links a {
    font-weight: 500;
}

.hover-white:hover {
    color: #ffffff !important;
}

.section-flow {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s ease, transform 0.8s ease;
}

.section-flow.in-view {
    opacity: 1;
    transform: translateY(0);
}

.hero-overlay {
    opacity: 0.3;
}

.hero-gradient {
    background: linear-gradient(to bottom, rgba(9, 9, 11, 0.45), rgba(9, 9, 11, 0.95));
    inset: 0;
    position: absolute;
}

.software-section {
    padding-bottom: 8rem;
}

.software-grid {
    margin-bottom: 3rem;
}

@media (max-width: 768px) {
    .software-section {
        padding-bottom: 120px;
    }

    .detail-view {
        padding-bottom: 80px;
    }
}

@media (max-width: 480px) {
    .software-section {
        padding-bottom: 100px;
    }

    .detail-view {
        padding-bottom: 70px;
    }
}

.pane-content.instant-hide,
.detail-view.instant-hide {
    opacity: 0 !important;
    transition: none !important;
}