/* ============================================================
   NIQSA — Design System & Styles
   ============================================================ */

/* ---- CSS Custom Properties (Design Tokens) ---- */
:root {
    /* Colors */
    --color-primary: #1A1A1A;
    --color-bg: #F9F8F6;
    --color-bg-alt: #F0EFED;
    --color-surface: #FFFFFF;
    --color-text: #1A1A1A;
    --color-text-secondary: #6B6B6B;
    --color-text-muted: #9B9B9B;
    --color-accent: #A8A0C8;
    --color-border: #E5E4E1;
    --color-overlay: rgba(0, 0, 0, 0.08);
    --color-overlay-heavy: rgba(0, 0, 0, 0.4);

    /* Typography */
    --font-display: 'Playfair Display', serif;
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;

    /* Spacings */
    --sidebar-width: 90px;
    --section-padding-x: clamp(2rem, 5vw, 8rem);
    --section-padding-y: clamp(4rem, 8vw, 10rem);

    /* Transitions */
    --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
    --transition-fast: 0.2s var(--ease-out);
    --transition-medium: 0.4s var(--ease-out);
    --transition-slow: 0.7s var(--ease-out);
}

/* ---- Dark Mode ---- */
body.dark {
    --color-primary: #F5F5F5;
    --color-bg: #0E0E0E;
    --color-bg-alt: #181818;
    --color-surface: #1A1A1A;
    --color-text: #EAEAEA;
    --color-text-secondary: #A0A0A0;
    --color-text-muted: #666666;
    --color-accent: #B4ADCF;
    --color-border: #2A2A2A;
    --color-overlay: rgba(0, 0, 0, 0.25);
    --color-overlay-heavy: rgba(0, 0, 0, 0.55);
}

/* ---- Reset & Base ---- */
*,
*::before,
*::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-sans);
    background-color: var(--color-bg);
    color: var(--color-text);
    min-height: 100vh;
    display: flex;
    overflow-x: hidden;
    transition: background-color var(--transition-medium), color var(--transition-medium);
}

a {
    text-decoration: none;
    color: inherit;
    transition: color var(--transition-fast);
}

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

button {
    background: none;
    border: none;
    cursor: pointer;
    font-family: inherit;
    color: inherit;
}

input,
textarea {
    font-family: inherit;
    font-size: inherit;
    color: inherit;
}

/* ============================================================
   SIDEBAR NAVIGATION
   ============================================================ */
.sidebar-nav {
    position: fixed;
    top: 0;
    left: 0;
    width: var(--sidebar-width);
    height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 2.5rem 0;
    border-right: 1px solid var(--color-border);
    background-color: var(--color-bg);
    z-index: 100;
    transition: background-color var(--transition-medium), border-color var(--transition-medium);
}

.sidebar-logo {
    margin-bottom: auto;
    display: flex;
    align-items: center;
    justify-content: center;
}

.logo-text {
    font-family: var(--font-display);
    font-size: 2rem;
    font-weight: 700;
    color: var(--color-primary);
    transition: color var(--transition-fast);
    line-height: 1;
}

.sidebar-logo:hover .logo-text {
    color: var(--color-accent);
}

.sidebar-links {
    display: flex;
    flex-direction: column;
    gap: 3rem;
    align-items: center;
    writing-mode: vertical-rl;
    text-orientation: mixed;
    transform: rotate(180deg);
}

.sidebar-link {
    font-size: 0.65rem;
    letter-spacing: 0.25em;
    text-transform: uppercase;
    color: var(--color-text-muted);
    transition: color var(--transition-fast);
    position: relative;
}

.sidebar-link::after {
    content: '';
    position: absolute;
    right: -8px;
    top: 50%;
    transform: translateY(-50%);
    width: 3px;
    height: 0;
    background-color: var(--color-accent);
    transition: height var(--transition-medium);
    border-radius: 2px;
}

.sidebar-link:hover,
.sidebar-link.active {
    color: var(--color-primary);
}

.sidebar-link.active::after {
    height: 20px;
}

.sidebar-bottom {
    margin-top: auto;
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    align-items: center;
}

.sidebar-icon-btn {
    color: var(--color-text-muted);
    transition: color var(--transition-fast), transform var(--transition-fast);
}

.sidebar-icon-btn:hover {
    color: var(--color-primary);
    transform: scale(1.1);
}

.sidebar-icon-btn .material-symbols-outlined {
    font-size: 1.25rem;
}

/* ============================================================
   MOBILE HEADER & MENU
   ============================================================ */
.mobile-header {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: 64px;
    padding: 0 1.5rem;
    align-items: center;
    justify-content: space-between;
    background-color: var(--color-bg);
    border-bottom: 1px solid var(--color-border);
    z-index: 90;
    transition: background-color var(--transition-medium), border-color var(--transition-medium);
}

.mobile-logo .logo-text {
    font-size: 1.5rem;
}

.mobile-brand {
    font-family: var(--font-display);
    font-size: 1.1rem;
    font-weight: 500;
    letter-spacing: 0.1em;
    color: var(--color-primary);
}

.mobile-menu-btn .material-symbols-outlined {
    font-size: 1.5rem;
    color: var(--color-primary);
}

/* Mobile Menu Overlay */
.mobile-menu-overlay {
    position: fixed;
    inset: 0;
    background-color: var(--color-bg);
    z-index: 200;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    pointer-events: none;
    transition: opacity var(--transition-medium);
}

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

.mobile-menu-content {
    text-align: center;
    position: relative;
    width: 100%;
    padding: 2rem;
}

.mobile-menu-close {
    position: absolute;
    top: -2rem;
    right: 1.5rem;
}

.mobile-menu-close .material-symbols-outlined {
    font-size: 1.5rem;
    color: var(--color-primary);
}

.mobile-menu-nav {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.mobile-nav-link {
    font-family: var(--font-display);
    font-size: 2.5rem;
    color: var(--color-primary);
    transition: color var(--transition-fast);
}

.mobile-nav-link:hover {
    color: var(--color-accent);
}

.mobile-menu-footer {
    margin-top: 4rem;
}

.social-links-row {
    display: flex;
    gap: 2.5rem;
    justify-content: center;
}

.social-links-row a {
    font-size: 0.7rem;
    text-transform: uppercase;
    letter-spacing: 0.15em;
    color: var(--color-text-muted);
    transition: color var(--transition-fast);
}

.social-links-row a:hover {
    color: var(--color-primary);
}

/* ============================================================
   MAIN CONTENT
   ============================================================ */
.main-content {
    margin-left: var(--sidebar-width);
    flex: 1;
    min-width: 0;
}

/* ============================================================
   SHARED STYLES
   ============================================================ */
.section-label {
    font-size: 0.65rem;
    text-transform: uppercase;
    letter-spacing: 0.3em;
    color: var(--color-text-muted);
    margin-bottom: 1.5rem;
}

.section-title {
    font-family: var(--font-display);
    font-size: clamp(2rem, 4vw, 3.5rem);
    font-weight: 400;
    line-height: 1.15;
    color: var(--color-primary);
}

.italic-accent {
    font-style: italic;
    color: var(--color-accent);
}

.cta-link {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.7rem;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    color: var(--color-primary);
    cursor: pointer;
}

.cta-text {
    border-bottom: 1px solid var(--color-primary);
    padding-bottom: 2px;
    transition: border-color var(--transition-fast);
}

.cta-link:hover .cta-text {
    border-color: transparent;
}

.cta-arrow {
    font-size: 0.9rem;
    transition: transform var(--transition-fast);
}

.cta-link:hover .cta-arrow {
    transform: translateX(4px);
}

.image-overlay {
    position: absolute;
    inset: 0;
    background: var(--color-overlay);
    pointer-events: none;
    transition: background var(--transition-medium);
}

/* ============================================================
   SECTION: HERO
   ============================================================ */
.hero-section {
    display: flex;
    min-height: 100vh;
}

.hero-text-side {
    width: 50%;
    padding: var(--section-padding-y) var(--section-padding-x);
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.hero-text-inner {
    max-width: 480px;
}

.hero-title {
    font-family: var(--font-display);
    font-size: clamp(2.8rem, 5vw, 4.5rem);
    font-weight: 400;
    line-height: 1.1;
    color: var(--color-primary);
    margin-bottom: 2rem;
}

.hero-description {
    font-size: 0.875rem;
    line-height: 1.8;
    color: var(--color-text-secondary);
    font-weight: 300;
    margin-bottom: 3rem;
}

.hero-cta {
    margin-bottom: 4rem;
}

.hero-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
    border-top: 1px solid var(--color-border);
    padding-top: 2.5rem;
}

.stat-label {
    font-size: 0.6rem;
    text-transform: uppercase;
    letter-spacing: 0.2em;
    color: var(--color-text-muted);
    margin-bottom: 0.5rem;
}

.stat-number {
    font-family: var(--font-display);
    font-size: 2rem;
    color: var(--color-primary);
}

.hero-image-side {
    width: 50%;
    position: relative;
    overflow: hidden;
    background: var(--color-bg-alt);
}

.hero-image {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    filter: grayscale(100%);
    transition: filter 0.7s ease;
}

.hero-image-side:hover .hero-image {
    filter: grayscale(0%);
}

.featured-card {
    position: absolute;
    bottom: 3rem;
    right: 3rem;
    background: var(--color-surface);
    padding: 1.5rem 2rem;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.1);
    max-width: 280px;
    z-index: 2;
}

.featured-label {
    font-size: 0.65rem;
    color: var(--color-text-muted);
    margin-bottom: 0.5rem;
}

.featured-title {
    font-family: var(--font-display);
    font-size: 1.1rem;
    color: var(--color-primary);
    margin-bottom: 1rem;
}

.featured-link {
    font-size: 0.65rem;
    text-transform: uppercase;
    letter-spacing: 0.2em;
    border-bottom: 1px solid var(--color-border);
    padding-bottom: 2px;
    transition: border-color var(--transition-fast);
}

.featured-link:hover {
    border-color: var(--color-primary);
}

/* ============================================================
   SECTION: SERVICES
   ============================================================ */
.services-section {
    padding-top: var(--section-padding-y);
}

.services-header {
    padding: 0 var(--section-padding-x);
    margin-bottom: 4rem;
}

.service-block {
    display: flex;
    min-height: 70vh;
    border-top: 1px solid var(--color-border);
}


.service-text-side {
    width: 50%;
    padding: var(--section-padding-y) var(--section-padding-x);
    display: flex;
    align-items: center;
}

.service-text-inner {
    max-width: 420px;
}

.service-number {
    font-size: 0.65rem;
    text-transform: uppercase;
    letter-spacing: 0.3em;
    color: var(--color-text-muted);
    margin-bottom: 1.5rem;
}

.service-title {
    font-family: var(--font-display);
    font-size: clamp(2.2rem, 4vw, 3.5rem);
    font-weight: 400;
    line-height: 1.15;
    color: var(--color-primary);
    margin-bottom: 1.5rem;
}

.service-description {
    font-size: 0.875rem;
    line-height: 1.8;
    color: var(--color-text-secondary);
    font-weight: 300;
    margin-bottom: 2.5rem;
}

.service-image-side {
    width: 50%;
    position: relative;
    overflow: hidden;
    background: var(--color-bg-alt);
    min-height: 50vh;
}

.service-image {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    filter: grayscale(100%);
    transition: filter 0.7s ease, transform 0.7s ease;
}

.service-image-side:hover .service-image {
    filter: grayscale(0%);
    transform: scale(1.03);
}

/* ============================================================
   SECTION: ABOUT
   ============================================================ */
.about-section {
    display: flex;
    min-height: 100vh;
}

.about-content-side {
    width: 50%;
    padding: var(--section-padding-y) var(--section-padding-x);
    display: flex;
    flex-direction: column;
}

.about-story {
    margin-bottom: 5rem;
}

.about-title {
    font-family: var(--font-display);
    font-size: clamp(2.2rem, 4vw, 3.5rem);
    font-weight: 400;
    line-height: 1.15;
    color: var(--color-primary);
    margin-bottom: 1.5rem;
}

.about-description {
    font-size: 0.875rem;
    line-height: 1.8;
    color: var(--color-text-secondary);
    font-weight: 300;
}

.values-list {
    display: flex;
    flex-direction: column;
    gap: 3rem;
}

.value-title {
    font-family: var(--font-display);
    font-size: 1.4rem;
    color: var(--color-primary);
    margin-bottom: 0.75rem;
}

.value-description {
    font-size: 0.875rem;
    line-height: 1.8;
    color: var(--color-text-secondary);
    font-weight: 300;
}

.about-image-side {
    width: 50%;
    position: sticky;
    top: 0;
    height: 100vh;
    overflow: hidden;
    background: var(--color-bg-alt);
}

.about-image {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    filter: grayscale(100%);
    transition: filter 0.7s ease;
}

.about-image-side:hover .about-image {
    filter: grayscale(0%);
}

/* ============================================================
   SECTION: CONTACT
   ============================================================ */
.contact-section {
    display: flex;
    min-height: 100vh;
    border-top: 1px solid var(--color-border);
}

.contact-form-area {
    width: 60%;
    padding: var(--section-padding-y) var(--section-padding-x);
    display: flex;
    align-items: center;
    justify-content: center;
}

.contact-form-inner {
    width: 100%;
    max-width: 520px;
}

.contact-title {
    font-family: var(--font-display);
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: 400;
    color: var(--color-primary);
    margin-bottom: 3.5rem;
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: 2.5rem;
}

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

.form-label {
    font-family: var(--font-display);
    font-size: 1.15rem;
    color: var(--color-primary);
    margin-bottom: 0.5rem;
}

.form-input {
    background: transparent;
    border: none;
    border-bottom: 1px solid var(--color-border);
    padding: 0.75rem 0;
    font-size: 0.875rem;
    color: var(--color-text);
    outline: none;
    transition: border-color var(--transition-fast);
}

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

.form-textarea {
    resize: none;
    min-height: 100px;
}

.form-submit {
    margin-top: 1rem;
}

.contact-info-area {
    width: 40%;
    display: flex;
    align-items: flex-end;
    justify-content: flex-end;
    padding: var(--section-padding-y) var(--section-padding-x);
}

.contact-info-inner {
    text-align: right;
}

.contact-info-block {
    margin-bottom: 2rem;
}

.contact-info-label {
    font-size: 0.6rem;
    text-transform: uppercase;
    letter-spacing: 0.2em;
    color: var(--color-text-muted);
    margin-bottom: 0.25rem;
}

.contact-info-value {
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.15em;
    color: var(--color-text);
}

.contact-socials {
    justify-content: flex-end;
}

/* ============================================================
   FOOTER
   ============================================================ */
.site-footer {
    border-top: 1px solid var(--color-border);
    padding: 3rem var(--section-padding-x);
}

.footer-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 1.5rem;
}

.footer-brand {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.footer-logo {
    font-family: var(--font-display);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-primary);
}

.footer-name {
    font-family: var(--font-display);
    font-size: 1rem;
    letter-spacing: 0.1em;
    color: var(--color-primary);
}

.footer-copy {
    font-size: 0.7rem;
    color: var(--color-text-muted);
    letter-spacing: 0.05em;
}

.footer-links {
    display: flex;
    gap: 2rem;
}

.footer-links a {
    font-size: 0.65rem;
    text-transform: uppercase;
    letter-spacing: 0.15em;
    color: var(--color-text-muted);
    transition: color var(--transition-fast);
}

.footer-links a:hover {
    color: var(--color-primary);
}

/* ============================================================
   ANIMATIONS
   ============================================================ */
.animate-in {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s var(--ease-out), transform 0.8s var(--ease-out);
}

.animate-in.visible {
    opacity: 1;
    transform: translateY(0);
}

.delay-1 {
    transition-delay: 0.1s;
}

.delay-2 {
    transition-delay: 0.2s;
}

.delay-3 {
    transition-delay: 0.3s;
}

.delay-4 {
    transition-delay: 0.4s;
}

.delay-5 {
    transition-delay: 0.5s;
}

/* Scroll reveal for service blocks */
.service-block .service-text-inner,
.about-story,
.about-values,
.contact-form-inner,
.contact-info-inner {
    opacity: 0;
    transform: translateY(40px);
    transition: opacity 0.8s var(--ease-out), transform 0.8s var(--ease-out);
}

.service-block.in-view .service-text-inner,
.about-section.in-view .about-story,
.about-section.in-view .about-values,
.contact-section.in-view .contact-form-inner,
.contact-section.in-view .contact-info-inner {
    opacity: 1;
    transform: translateY(0);
}

.about-section.in-view .about-values {
    transition-delay: 0.15s;
}

.contact-section.in-view .contact-info-inner {
    transition-delay: 0.15s;
}

/* ============================================================
   SCROLL PROGRESS BAR
   ============================================================ */
.scroll-progress {
    position: fixed;
    top: 0;
    left: var(--sidebar-width);
    height: 2px;
    background: linear-gradient(90deg, var(--color-accent), var(--color-primary));
    width: 0%;
    z-index: 150;
    transition: width 0.1s linear;
}

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 1024px) {
    .sidebar-nav {
        display: none;
    }

    .mobile-header {
        display: flex;
    }

    .main-content {
        margin-left: 0;
        margin-top: 64px;
    }

    .hero-section {
        flex-direction: column;
        min-height: auto;
    }

    .hero-text-side,
    .hero-image-side {
        width: 100%;
    }

    .hero-image-side {
        height: 60vh;
    }

    .service-block {
        flex-direction: column;
    }

    .service-text-side,
    .service-image-side {
        width: 100%;
    }

    .service-image-side {
        min-height: 50vh;
    }



    .about-section {
        flex-direction: column;
    }

    .about-content-side,
    .about-image-side {
        width: 100%;
    }

    .about-image-side {
        position: relative;
        height: 60vh;
    }

    .contact-section {
        flex-direction: column;
    }

    .contact-form-area,
    .contact-info-area {
        width: 100%;
    }

    .contact-info-area {
        justify-content: flex-start;
        padding-top: 0;
    }

    .contact-info-inner {
        text-align: left;
    }

    .contact-socials {
        justify-content: flex-start;
    }

    .featured-card {
        display: none;
    }

    .scroll-progress {
        left: 0;
    }
}

@media (max-width: 640px) {
    .hero-title {
        font-size: 2.4rem;
    }

    .hero-stats {
        grid-template-columns: repeat(3, 1fr);
        gap: 1rem;
    }

    .stat-number {
        font-size: 1.5rem;
    }

    .service-title,
    .about-title {
        font-size: 2rem;
    }

    .contact-title {
        font-size: 2.2rem;
    }

    .mobile-nav-link {
        font-size: 2rem;
    }

    .footer-inner {
        flex-direction: column;
        align-items: flex-start;
    }
}

/* ============================================================
   SELECTION & SCROLLBAR
   ============================================================ */
::selection {
    background: var(--color-accent);
    color: var(--color-surface);
}

::-webkit-scrollbar {
    width: 6px;
}

::-webkit-scrollbar-track {
    background: var(--color-bg);
}

::-webkit-scrollbar-thumb {
    background: var(--color-border);
    border-radius: 3px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--color-text-muted);
}