/* variables begin */
:root {
    --font-stack: -apple-system, BlinkMacSystemFont, "SF Pro Display", "SF Pro Text", "Helvetica Neue", sans-serif;
    --color-bg-main: #f4f4f4;
    --color-text-primary: #000000;
    --color-text-secondary: rgba(60, 60, 67, 0.65);
    --color-text-tertiary: rgba(60, 60, 67, 0.35);
    --color-titanium: rgb(142, 142, 147);
    --section-gap: 20px;
    --card-padding: 36px;
    --radius-l: 52px;
    --material-glass-bg: rgba(215, 215, 217, 0.3);
    --material-glass-border: rgba(255, 255, 255, 0.4);
    --material-glass-shadow:
        0 8px 32px -8px rgba(0, 0, 0, 0.08),
        inset 0 1px 1px rgba(255, 255, 255, 1),
        inset 0 -1px 2px rgba(0, 0, 0, 0.1);
    --blur-amount: 2px;
    --noise-pattern: url('data:image/svg+xml,%3Csvg viewBox="0 0 200 200" xmlns="http://www.w3.org/2000/svg"%3E%3Cfilter id="noiseFilter"%3E%3CfeTurbulence type="fractalNoise" baseFrequency="0.8" numOctaves="3" stitchTiles="stitch"/%3E%3C/filter%3E%3Crect width="100%25" height="100%25" filter="url(%23noiseFilter)" opacity="0.05"/%3E%3C/svg%3E');
}

@media (prefers-color-scheme: dark) {
    :root {
        --color-bg-main: #000000;
        --color-text-primary: #FFFFFF;
        --color-text-secondary: rgba(235, 235, 245, 0.6);
        --color-text-tertiary: rgba(235, 235, 245, 0.35);
        --material-glass-bg: rgba(28, 28, 30, 0.3);
        --material-glass-border: rgba(255, 255, 255, 0.1);
        --material-glass-shadow:
            0 12px 40px -10px rgba(0, 0, 0, 0.5),
            inset 0 1px 1px rgba(255, 255, 255, 0.2),
            inset 0 -1px 1px rgba(0, 0, 0, 0.3);
    }
}

/* variables end */

/* base styles begin */
* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    background: var(--color-bg-main);
    color: var(--color-text-primary);
    font-family: var(--font-stack);
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}

body::before {
    content: "";
    position: fixed;
    inset: 0;
    background-image: var(--noise-pattern);
    pointer-events: none;
    z-index: 50;
    opacity: 0.5;
    mix-blend-mode: overlay;
}

a {
    text-decoration: none;
    color: inherit;
    -webkit-tap-highlight-color: transparent;
}

.glass-button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    margin-top: 22px;
    padding: 14px 28px;

    background: var(--color-titanium);
    border: 1px solid var(--material-glass-border);
    box-shadow: var(--material-glass-shadow);
    backdrop-filter: blur(var(--blur-amount));
    -webkit-backdrop-filter: blur(var(--blur-amount));

    border-radius: 100px;
    font-size: 15px;
    font-weight: 500;
    width: fit-content;
    z-index: 3;
}

.glass-button:hover {
    background: rgb(124, 124, 128);
    border-color: rgba(255, 255, 255, 0.3);
}

@media (max-width: 900px) {
    .glass-button {
        align-self: center;
        width: 100%;
    }
}

/* base styles end */

/* layout & typography begin */
.content-container {
    max-width: 1040px;
    margin: 0 auto;
    padding: 0 24px;
}

.section-pad {
    padding: var(--section-gap) 0;
}

.title-kerning {
    letter-spacing: -0.05em;
}

h2 {
    font-size: 44px;
    letter-spacing: -0.03em;
    margin-bottom: 24px;
    line-height: 1;
}

h3.section-label {
    font-size: 12px;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--color-text-tertiary);
    font-weight: 700;
    margin-bottom: 20px;
    padding-left: 4px;
}

h4 {
    font-size: 22px;
    font-weight: 600;
    margin-bottom: 8px;
}

.spatial-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
}

.spatial-grid.projects {
    grid-template-columns: repeat(3, 1fr);
}

.blur-layer {
    backdrop-filter: blur(var(--blur-amount));
    -webkit-backdrop-filter: blur(var(--blur-amount));
}

/* layout & typography end */

/* cards begin */
.glass-card {
    background: var(--material-glass-bg);
    border: 1px solid var(--material-glass-border);
    box-shadow: var(--material-glass-shadow);
    border-radius: var(--radius-l);
    padding: var(--card-padding);
    transition: transform 0.4s cubic-bezier(0.25, 1, 0.5, 1);
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}

.glass-card.dark-accent {
    background: #000000;
    border: 1px solid rgba(255, 255, 255, 0.15);
    position: relative;
    overflow: hidden;
}

.glass-card.dark-accent * {
    color: #FFFFFF !important;
    position: relative;
    z-index: 2;
}

.glass-card.dark-accent::after {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle at 50% 50%, rgba(20, 20, 20, 1), transparent 70%);
    pointer-events: none;
    z-index: 1;
}

.card-body {
    font-size: 18px;
    line-height: 1.5;
    color: var(--color-text-secondary);
    max-width: 550px;
}

.card-body-sm {
    font-size: 16px;
    color: var(--color-text-secondary);
    line-height: 1.4;
}

/* cards end */

/* navigation begin */
.nav-container {
    position: fixed;
    top: 20px;
    left: 50%;
    transform: translateX(-50%);
    width: min(65% - 24px, 1080px);
    display: flex;
    gap: 12px;
    z-index: 100;
    height: 64px;
}

.nav-dock {
    background: var(--material-glass-bg);
    border: 1px solid var(--material-glass-border);
    box-shadow: var(--material-glass-shadow);
    border-radius: 100px;
    display: flex;
    align-items: center;
    backdrop-filter: blur(var(--blur-amount));
    -webkit-backdrop-filter: blur(var(--blur-amount));
    transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
}

.dock-main {
    flex: 1;
    padding: 0 8px 0 24px;
    justify-content: space-between;
}

.dock-main {
    will-change: transform;
    transform-origin: center center;
    cursor: grab;
    user-select: none;
    transition: transform 0.8s cubic-bezier(0.5, 1.5, 0.5, 1);
}

.dock-main:active {
    cursor: grabbing;
}

.dock-main .brand,
.dock-main .nav-item {
    transition: transform 0.2s ease;
}


.brand {
    font-weight: 700;
    font-size: 20px;
    letter-spacing: -0.5px;
    color: var(--color-text-primary);
    white-space: nowrap;
}

.nav-links {
    display: flex;
    gap: 24px;
    margin-right: 16px;
}

.nav-item {
    font-size: 15px;
    font-weight: 500;
    color: var(--color-text-secondary);
    transition: color 0.2s;
}

.nav-item:hover {
    color: var(--color-text-primary);
}

.dock-side {
    flex: 0 0 auto;
    padding: 5px;
    padding-left: 15px;
    padding-right: 15px;
    min-width: 64px;
    justify-content: center;
}

.dock-side {
    will-change: transform;
    transform-origin: center center;
    cursor: grab;
    user-select: none;
    transition: transform 0.8s cubic-bezier(0.5, 1.5, 0.5, 1);
}

.dock-side:active {
    cursor: grabbing;
}

.dock-side .segment-select,
.dock-side .select-item,
.dock-side .menu-toggle {
    transition: transform 0.2s ease;
}

.segment-select {
    background: rgba(120, 120, 128, 0.12);
    padding: 4px;
    border-radius: 100px;
    display: flex;
}

.select-item {
    padding: 6px 14px;
    font-size: 13px;
    font-weight: 600;
    color: var(--color-text-secondary);
    border-radius: 100px;
    transition: all 0.2s ease;
}

.select-item.active {
    background: var(--color-bg-main);
    color: var(--color-text-primary);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.12);
}

.menu-toggle {
    width: 100%;
    height: 100%;
    min-width: 50px;
    background: transparent;
    border: none;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
}

.hamburger-icon {
    width: 20px;
    height: 12px;
    position: relative;
    margin-right: 28%;
}

.hamburger-icon span {
    position: absolute;
    width: 100%;
    height: 2px;
    background: var(--color-text-primary);
    border-radius: 2px;
    transition: 0.3s;
}

.hamburger-icon span:first-child {
    top: 0;
}

.hamburger-icon span:last-child {
    bottom: 0;
}

.menu-open .hamburger-icon span:first-child {
    top: 5px;
    transform: rotate(45deg);
}

.menu-open .hamburger-icon span:last-child {
    bottom: 5px;
    transform: rotate(-45deg);
}

/* navigation end */

/* mobile overlay begin */
.mobile-overlay {
    position: fixed;
    inset: 0;
    background: var(--color-bg-main);
    z-index: 90;
    opacity: 0;
    pointer-events: none;
    transition: 0.3s;
    display: flex;
    align-items: center;
    justify-content: center;
}

.mobile-overlay.active {
    opacity: 1;
    pointer-events: all;
}

.overlay-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 40px;
}

.overlay-list {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 24px;
}

.overlay-list a {
    font-size: 32px;
    font-weight: 700;
    letter-spacing: -0.03em;
}

.mobile-lang-switch {
    display: none;
}

/* mobile overlay end */

/* sections begin */
.hero-section {
    padding-top: 160px;
    padding-bottom: 140px;
    position: relative;
    overflow: hidden;
}

.hero-title {
    font-size: clamp(56px, 11vw, 100px);
    font-weight: 580;
    line-height: 0.92;
    margin-bottom: 24px;
    color: #FFFFFF;
}

.glass-text {
    font-size: 20px;
    color: rgba(235, 235, 245);
    max-width: 480px;
    font-weight: 500;
}

/* contact start */
.contact-card {
    text-align: center;
    align-items: center !important;
    justify-content: center;
    padding: 60px 24px !important;
    gap: 32px;
}

.contact-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 16px;
}

.contact-cta {
    background: linear-gradient(180deg, #FFFFFF 0%, var(--color-titanium) 100%);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    font-weight: 700;
    margin-bottom: 0;
}

.titanium-btn {
    margin-top: 10px;
    background: var(--color-titanium);
    border: 1px solid var(--material-glass-border);
    box-shadow: var(--material-glass-shadow);
    backdrop-filter: blur(var(--blur-amount));
    -webkit-backdrop-filter: blur(var(--blur-amount));
}

.titanium-btn:hover {
    background: rgb(124, 124, 128) !important;
}

/* sections end */


.project-tag {
    font-size: 10px;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    background: rgba(120, 120, 128, 0.1);
    padding: 4px 10px;
    border-radius: 20px;
    margin-bottom: 12px;
    display: inline-block;
    color: var(--color-text-secondary);
}

.project-card {
    min-height: 280px;
}

.process-steps {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 40px;
    margin-top: 40px;
    padding: 0 10px;
}

.step-item {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.step-num {
    font-size: 14px;
    font-weight: 700;
    color: var(--color-text-tertiary);
    font-family: monospace;
}

@media (max-width: 900px) {
    .process-steps {
        grid-template-columns: repeat(2, 1fr);
        gap: 32px;
    }

    .project-card {
        min-height: 220px;
    }
}

/* animations begin */
.motion-canvas {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    pointer-events: none;
}

.laser-beam {
    position: absolute;
    width: 2px;
    height: 150vmax;
    top: 50%;
    transform: translateY(-50%);
    background: var(--color-titanium);
    opacity: 1;
    will-change: transform, width, opacity;
}

.laser-left {
    left: 0;
    animation: leftLaserMove 6s cubic-bezier(0.4, 0, 0.2, 1) forwards;
}

.laser-right {
    right: 0;
    animation: rightLaserMove 6s cubic-bezier(0.4, 0, 0.2, 1) forwards;
}

@keyframes leftLaserMove {
    0% {
        left: -5%;
        width: 100px;
        transform: translateY(-50%) rotate(0deg);
    }

    45% {
        left: 50%;
        width: 60px;
        transform: translateY(-50%) translateX(-100%) rotate(0deg);
    }

    53% {
        left: 50%;
        width: 50px;
        transform: translateY(-50%) translateX(-90%) rotate(60deg);
    }

    100% {
        left: 50%;
        width: 200vh;
        transform: translateY(-50%) translateX(-90%) rotate(60deg);
    }
}

@keyframes rightLaserMove {
    0% {
        right: -5%;
        width: 100px;
        transform: translateY(-50%) rotate(0deg);
    }

    45% {
        right: 50%;
        width: 60px;
        transform: translateY(-50%) translateX(100%) rotate(0deg);
    }

    53% {
        right: 50%;
        width: 50px;
        transform: translateY(-50%) translateX(90%) rotate(60deg);
    }

    100% {
        right: 50%;
        width: 200vh;
        transform: translateY(-50%) translateX(90%) rotate(60deg);
    }
}

/* animations end */

/* responsive logic begin */
.mobile-only {
    display: none;
}

@media (max-width: 900px) {
    .desktop-only {
        display: none !important;
    }

    .mobile-only {
        display: flex !important;
    }

    .nav-container {
        width: calc(94% - 20px);
        top: 16px;
    }

    .dock-main {
        padding-right: 6px;
    }

    .dock-main .segment-select {
        margin-right: 8px;
    }

    .dock-side {
        width: 64px;
        border-radius: 50%;
        padding: 0;
        aspect-ratio: 1 / 1;
    }

    .content-container {
        padding: 0 12px;
    }

    .spatial-grid {
        gap: 10px;
        grid-template-columns: repeat(2, 1fr);
    }

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

    .project-card.span-2 {
        grid-column: span 2;
    }

    .span-2 {
        grid-column: span 1;
    }

    .hero-title {
        font-size: 52px;
    }

    .contact-cta {
        font-size: 32px;
    }

    h2 {
        font-size: 32px;
    }

    .glass-card {
        padding: 28px;
    }

    .card-body-sm {
        font-size: 14px;
    }

    h4 {
        font-size: 20px;
    }

    .dark-accent {
        padding: 26px 26px !important;
    }
}

/* responsive logic end */