@layer reset, tokens, base, layout, components, animations, utilities;

@layer reset {
  html, body, div, span, header, nav, main, section, article, aside, footer,
  h1, h2, h3, h4, h5, h6, p, blockquote, figure, figcaption, ul, ol, li, dl, dt, dd,
  table, caption, thead, tbody, tr, th, td, form, fieldset, legend, label,
  input, select, textarea, button, dialog, details, summary, search {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
  }

  img, svg, picture, video {
    display: block;
    max-inline-size: 100%;
    block-size: auto;
  }

  button, input, select, textarea {
    font: inherit;
    color: inherit;
  }

  ul, ol {
    list-style: none;
  }

  table {
    border-collapse: collapse;
    inline-size: 100%;
  }
}

@layer tokens {
  :root {
    color-scheme: light;

    /* Official Serhat Plastik Brand Palette (from design.css & SVG logo) */
    --primary-color: #0299d6;
    --primary-color-dark: #058cc2;
    --logo-cyan: #10a1dc;
    --secondary-color: #59ab4c;
    --secondary-color-dark: #4d9443;
    --whatsapp-green: #50ba22;

    /* High-Contrast Commercial Surfaces & Text */
    --surface-white: #ffffff;
    --surface-subtle: #f9f9f9;
    --surface-muted: #efefef;
    --surface-dark: #0a181c;
    --surface-darker: #111111;

    --text-heading: #111111;
    --text-contrast: #0a181c;
    --text-body: #586977;
    --text-muted: #666666;
    --text-on-dark: #ffffff;
    --text-on-dark-muted: #b3b5b9;

    --border-light: #e2e8f0;
    --border-medium: #dddddd;
    --border-strong: #94a3b8;

    --status-error: #c62828;
    --status-error-bg: #fef2f2;

    --font-sans: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    --container-max: 75rem; /* 1200px */

    --radius-sm: 0.25rem; /* 4px matching original site */
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;

    --shadow-header: 0 3px 12px rgba(41, 46, 58, 0.1);
    --shadow-card: 0 10px 30px rgba(41, 46, 58, 0.08);
    --shadow-card-hover: 0 20px 40px rgba(10, 24, 28, 0.16);
    --shadow-Strong: 0 20px 40px rgba(10, 24, 28, 0.22);
  }

  @media (forced-colors: active) {
    :root {
      --border-light: CanvasText;
      --border-medium: CanvasText;
      --border-strong: CanvasText;
    }
  }
}

@layer base {
  html {
    scroll-behavior: smooth;
    scroll-padding-block-start: 6.25rem;
    background-color: var(--surface-white);
    color: var(--text-body);
    font-family: var(--font-sans);
    line-height: 1.65;
    text-align: start;
    accent-color: var(--primary-color);
  }

  @media (prefers-reduced-motion: reduce) {
    html {
      scroll-behavior: auto;
    }
  }

  body {
    background-color: var(--surface-white);
    color: var(--text-body);
    min-block-size: 100dvh;
    overflow-x: clip;
  }

  h1, h2, h3, h4, h5, h6, th {
    color: var(--text-heading);
    line-height: 1.25;
    font-weight: 800;
    text-wrap: balance;
  }

  p, li, blockquote, dd {
    text-wrap: pretty;
  }

  a {
    color: inherit;
    text-decoration: none;
    transition: color 0.2s ease, background-color 0.2s ease, border-color 0.2s ease, transform 0.2s ease, box-shadow 0.2s ease;
  }

  :where(a:any-link, button, input, select, textarea, summary):focus-visible {
    outline: 3px solid var(--primary-color);
    outline-offset: 3px;
  }

  ::selection {
    background-color: var(--primary-color);
    color: var(--surface-white);
  }
}

@layer layout {
  .container {
    inline-size: min(100% - 2.5rem, var(--container-max));
    margin-inline: auto;
  }

  .section {
    padding-block: clamp(4rem, 6.5vw, 6rem);
    background-color: var(--surface-white);
  }

  .section-subtle {
    background-color: var(--surface-subtle);
    border-block: 1px solid var(--border-light);
  }

  .section-dark {
    background: linear-gradient(135deg, var(--surface-dark) 0%, #132529 100%);
    color: var(--text-on-dark);
    padding-block: clamp(4.25rem, 7vw, 6.5rem);
    position: relative;
    overflow: clip;
  }

  /* Signature Serhat Plastik Section Heading with Flanking Blue Lines */
  .head {
    margin-block-end: clamp(2.25rem, 4vw, 3.25rem);
    text-align: center;
  }

  .head-left {
    text-align: start;
  }

  .head-eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding-block: 0.3rem;
    padding-inline: 0.85rem;
    border-radius: var(--radius-sm);
    background-color: rgba(2, 153, 214, 0.1);
    color: var(--primary-color);
    font-size: 0.8125rem;
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    margin-block-end: 0.75rem;
  }

  .head-title {
    position: relative;
    color: var(--text-heading);
    font-size: clamp(1.75rem, 1.35rem + 1.6vw, 2.375rem);
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: -0.01em;
    overflow: hidden;
  }

  .head:not(.head-left) .head-title::before,
  .head:not(.head-left) .head-title::after {
    background-color: var(--primary-color);
    content: "";
    display: inline-block;
    block-size: 2px;
    position: relative;
    vertical-align: middle;
    inline-size: 12%;
    max-inline-size: 7rem;
    opacity: 0.55;
  }

  .head:not(.head-left) .head-title::before {
    inset-inline-end: 0.75em;
    margin-inline-start: -12%;
  }

  .head:not(.head-left) .head-title::after {
    inset-inline-start: 0.75em;
    margin-inline-end: -12%;
  }

  .head-title span {
    color: var(--primary-color);
  }

  .head-subtitle {
    margin-block-start: 0.75rem;
    margin-inline: auto;
    max-inline-size: 62ch;
    color: var(--text-body);
    font-size: 1.0625rem;
  }
}

@layer components {
  /* 1. Original Top Info Bar (#0299d6 Blue) */
  .top-info {
    inline-size: 100%;
    min-block-size: 3.125rem;
    display: flex;
    align-items: center;
    background-color: var(--primary-color);
    color: var(--surface-white);
    font-size: 0.875rem;
  }

  .top-info-in {
    display: flex;
    flex-flow: row wrap;
    align-items: safe center;
    justify-content: space-between;
    gap: 0.5rem 1.25rem;
    padding-block: 0.375rem;
  }

  .top-info-text {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--surface-white);
    font-weight: 600;
    letter-spacing: -0.01em;
  }

  .top-info-badge-dot {
    inline-size: 0.5rem;
    block-size: 0.5rem;
    border-radius: 50%;
    background-color: #a7f3d0;
    box-shadow: 0 0 0 3px rgba(255, 255, 255, 0.22);
  }

  .top-info-nav ul {
    display: flex;
    flex-flow: row wrap;
    align-items: safe center;
  }

  .top-info-nav ul li {
    padding-inline: 1.125rem;
    display: flex;
    align-items: center;
  }

  .top-info-nav ul li:not(:first-child) {
    border-inline-start: 1px solid rgba(255, 255, 255, 0.32);
  }

  .top-info-nav ul li a {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--surface-white);
    font-weight: 600;
    min-block-size: 1.75rem;
  }

  .top-info-nav ul li a:hover {
    opacity: 0.88;
    transform: translateY(-1px);
  }

  .top-info-nav ul li a svg {
    inline-size: 1rem;
    block-size: 1rem;
    fill: currentColor;
    flex-shrink: 0;
  }

  /* Language Pill inside Top Info Bar */
  .lang-switcher {
    display: inline-flex;
    align-items: center;
    background-color: #f3f3f3;
    border-radius: 0.375rem;
    padding: 0.15rem;
  }

  .lang-btn {
    appearance: none;
    border: 0;
    background: transparent;
    color: var(--text-heading);
    font-size: 0.8125rem;
    font-weight: 800;
    padding-block: 0.25rem;
    padding-inline: 0.65rem;
    border-radius: 0.25rem;
    cursor: pointer;
    text-transform: uppercase;
    transition: background-color 0.2s ease, color 0.2s ease;
  }

  .lang-btn[aria-pressed="true"] {
    background-color: var(--surface-darker);
    color: var(--surface-white);
  }

  .lang-btn:hover:not([aria-pressed="true"]) {
    background-color: rgba(2, 153, 214, 0.15);
    color: var(--primary-color-dark);
  }

  /* 2. Sticky Main Header (White Background, Original SPS Logo + Slogan + Clean Nav) */
  .header {
    position: sticky;
    inset-block-start: 0;
    z-index: 999;
    inline-size: 100%;
    padding-block: 1.125rem;
    background-color: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow-header);
  }

  .header-in {
    display: flex;
    flex-flow: row wrap;
    align-items: safe center;
    justify-content: space-between;
    gap: 1rem 1.5rem;
  }

  .logo {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 1.5rem;
  }

  .logo a {
    display: inline-flex;
    align-items: center;
  }

  .logo svg {
    inline-size: 9.375rem; /* 150px matching design.css */
    block-size: 4.6875rem; /* 75px matching design.css */
    transition: transform 0.25s ease;
  }

  .logo a:hover svg {
    transform: scale(1.03);
  }

  .slogan-text {
    display: flex;
    align-items: center;
    padding-inline-start: 1.5rem;
    border-inline-start: 2px solid var(--border-light);
  }

  .slogan-text span {
    color: var(--text-heading);
    font-size: 0.9375rem;
    font-weight: 500;
    letter-spacing: -0.01em;
  }

  @media (max-width: 900px) {
    .slogan-text {
      display: none;
    }
  }

  .main-nav > ul {
    display: flex;
    flex-flow: row wrap;
    align-items: center;
    gap: 0.25rem;
  }

  .main-nav > ul > li > a {
    position: relative;
    padding-block: 0.625rem;
    padding-inline: 0.875rem;
    display: inline-flex;
    align-items: center;
    color: var(--text-heading);
    font-size: 1rem;
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: 0.02em;
  }

  .main-nav > ul > li > a::after {
    content: "";
    position: absolute;
    inset-block-end: 0.2rem;
    inset-inline: 0.875rem;
    block-size: 3px;
    background-color: var(--primary-color);
    border-radius: 2px;
    transform: scaleX(0);
    transform-origin: center;
    transition: transform 0.25s ease;
  }

  .main-nav > ul > li > a:hover {
    color: var(--primary-color);
  }

  .main-nav > ul > li > a:hover::after {
    transform: scaleX(1);
  }

  /* 3. Full-Bleed High-Contrast Hero Photo Slider (.slide) */
  .hero-slider {
    position: relative;
    inline-size: 100%;
    block-size: clamp(30rem, 62vh, 36rem);
    background-color: var(--surface-dark);
    overflow: clip;
  }

  .slide-track {
    position: relative;
    inline-size: 100%;
    block-size: 100%;
  }

  .slide-box {
    position: absolute;
    inset: 0;
    inline-size: 100%;
    block-size: 100%;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.75s cubic-bezier(0.22, 1, 0.36, 1), visibility 0.75s;
  }

  .slide-box.is-active {
    opacity: 1;
    visibility: visible;
    z-index: 2;
  }

  .slide-bg-img {
    inline-size: 100%;
    block-size: 100%;
    object-fit: cover;
    filter: brightness(0.68) contrast(1.08);
    transform: scale(1.06);
    transition: transform 6s ease-out;
  }

  .slide-box.is-active .slide-bg-img {
    transform: scale(1);
  }

  .slide-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(
      100deg,
      rgba(10, 24, 28, 0.88) 0%,
      rgba(10, 24, 28, 0.62) 52%,
      rgba(2, 153, 214, 0.22) 100%
    );
    display: flex;
    align-items: center;
  }

  .slide-content {
    max-inline-size: 46rem;
    color: var(--surface-white);
    transform: translateY(1.25rem);
    opacity: 0;
    transition: transform 0.65s cubic-bezier(0.22, 1, 0.36, 1) 0.15s, opacity 0.65s ease 0.15s;
  }

  .slide-box.is-active .slide-content {
    transform: translateY(0);
    opacity: 1;
  }

  .slide-kicker {
    display: inline-block;
    padding-block: 0.35rem;
    padding-inline: 0.9rem;
    background-color: var(--primary-color);
    color: var(--surface-white);
    font-size: 0.8125rem;
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    border-radius: var(--radius-sm);
    margin-block-end: 1rem;
  }

  .slide-heading {
    color: var(--surface-white);
    font-size: clamp(2.125rem, 1.5rem + 2.8vw, 3.25rem);
    font-weight: 900;
    line-height: 1.15;
    text-transform: uppercase;
    text-shadow: 2px 2px 0 rgba(17, 17, 17, 0.85);
    margin-block-end: 1rem;
  }

  .slide-desc {
    color: rgba(255, 255, 255, 0.94);
    font-size: clamp(1.0625rem, 0.98rem + 0.4vw, 1.35rem);
    font-weight: 600;
    line-height: 1.45;
    margin-block-end: 1.75rem;
    max-inline-size: 54ch;
  }

  .slide-box-buttons {
    display: flex;
    flex-flow: row wrap;
    gap: 0.875rem;
  }

  /* Brand Buttons */
  .btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;
    padding-block: 0.85rem;
    padding-inline: 1.5rem;
    border-radius: var(--radius-sm);
    border: 2px solid transparent;
    font-size: 0.9375rem;
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: 0.03em;
    cursor: pointer;
    min-block-size: 3rem;
    transition: background-color 0.2s ease, border-color 0.2s ease, color 0.2s ease, transform 0.2s ease, box-shadow 0.2s ease;
  }

  .btn svg {
    inline-size: 1.125rem;
    block-size: 1.125rem;
    fill: currentColor;
    transition: transform 0.2s ease;
  }

  .btn:hover:not(:disabled) svg {
    transform: translateX(4px);
  }

  .btn-green {
    background-color: var(--secondary-color);
    color: var(--surface-white);
    box-shadow: 0 8px 20px rgba(89, 171, 76, 0.3);
  }

  .btn-green:hover:not(:disabled) {
    background-color: var(--secondary-color-dark);
    transform: translateY(-2px);
    box-shadow: 0 12px 24px rgba(89, 171, 76, 0.4);
  }

  .btn-blue {
    background-color: var(--primary-color);
    color: var(--surface-white);
    box-shadow: 0 8px 20px rgba(2, 153, 214, 0.28);
  }

  .btn-blue:hover:not(:disabled) {
    background-color: var(--primary-color-dark);
    transform: translateY(-2px);
    box-shadow: 0 12px 24px rgba(2, 153, 214, 0.38);
  }

  .btn-dark {
    background-color: var(--surface-darker);
    color: var(--surface-white);
  }

  .btn-dark:hover:not(:disabled) {
    background-color: var(--secondary-color);
    transform: translateY(-2px);
  }

  .btn-outline-white {
    background-color: rgba(255, 255, 255, 0.12);
    color: var(--surface-white);
    border-color: rgba(255, 255, 255, 0.7);
    backdrop-filter: blur(4px);
  }

  .btn-outline-white:hover:not(:disabled) {
    background-color: var(--surface-white);
    color: var(--text-heading);
    border-color: var(--surface-white);
  }

  /* Slider Arrow Controls & Dots (Matching .slide-arrow in design.css) */
  .slide-controls {
    position: absolute;
    inset-inline: 0;
    inset-block-end: 1.75rem;
    z-index: 10;
    pointer-events: none;
  }

  .slide-controls-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
  }

  .slide-dots {
    display: flex;
    align-items: center;
    gap: 0.625rem;
    pointer-events: auto;
  }

  .slide-dot {
    appearance: none;
    border: 0;
    inline-size: 2.5rem;
    block-size: 0.375rem;
    border-radius: 999px;
    background-color: rgba(255, 255, 255, 0.38);
    cursor: pointer;
    transition: background-color 0.25s ease, inline-size 0.25s ease;
  }

  .slide-dot[aria-selected="true"] {
    inline-size: 4rem;
    background-color: var(--secondary-color);
  }

  .slide-arrows {
    display: flex;
    gap: 0.625rem;
    pointer-events: auto;
  }

  .slide-arrow-btn {
    appearance: none;
    border: 0;
    inline-size: 3.25rem;
    block-size: 3.25rem;
    border-radius: var(--radius-sm);
    background-color: var(--surface-white);
    color: var(--text-heading);
    display: grid;
    place-content: center;
    cursor: pointer;
    box-shadow: var(--shadow-card);
    transition: background-color 0.2s ease, color 0.2s ease, transform 0.2s ease;
  }

  .slide-arrow-btn:hover {
    background-color: var(--primary-color);
    color: var(--surface-white);
    transform: translateY(-2px);
  }

  .slide-arrow-btn svg {
    inline-size: 1.25rem;
    block-size: 1.25rem;
    fill: currentColor;
  }

  /* 4. High-Contrast Brand Stats Strip */
  .stats-strip {
    background-color: var(--surface-white);
    border-block-end: 1px solid var(--border-light);
    padding-block: 2.25rem;
    position: relative;
    z-index: 5;
  }

  .stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(14rem, 1fr));
    gap: 1.5rem;
  }

  .stat-item {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    padding: 1.25rem 1.5rem;
    background-color: var(--surface-white);
    border: 1px solid var(--border-light);
    border-inline-start: 4px solid var(--primary-color);
    border-radius: var(--radius-sm);
    box-shadow: var(--shadow-card);
    transition: transform 0.25s ease, box-shadow 0.25s ease;
  }

  .stat-item:nth-child(even) {
    border-inline-start-color: var(--secondary-color);
  }

  .stat-item:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-card-hover);
  }

  .stat-number {
    font-size: 2rem;
    font-weight: 900;
    color: var(--primary-color);
    line-height: 1;
  }

  .stat-item:nth-child(even) .stat-number {
    color: var(--secondary-color);
  }

  .stat-label {
    font-size: 0.9375rem;
    font-weight: 800;
    color: var(--text-heading);
    text-transform: uppercase;
    margin-block-end: 0.2rem;
  }

  .stat-desc {
    font-size: 0.8125rem;
    color: var(--text-body);
    line-height: 1.4;
  }

  /* 5. Hakkımızda Section (.less-about-us + .corporate-group) */
  .about-boxes {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(min(100%, 26rem), 1fr));
    gap: clamp(2rem, 4vw, 3.5rem);
    align-items: center;
  }

  .about-text p {
    color: var(--text-body);
    font-size: 1.025rem;
    line-height: 1.75;
    margin-block-end: 1.125rem;
  }

  .about-image-wrap {
    position: relative;
    border-radius: var(--radius-sm);
    overflow: clip;
    box-shadow: var(--shadow-card-hover);
    border: 8px solid var(--surface-white);
  }

  .about-image-wrap img {
    inline-size: 100%;
    block-size: 24rem;
    object-fit: cover;
    transition: transform 0.6s ease;
  }

  .about-image-wrap:hover img {
    transform: scale(1.04);
  }

  .about-image-badge {
    position: absolute;
    inset-block-end: 1.25rem;
    inset-inline-start: 1.25rem;
    background-color: var(--primary-color);
    color: var(--surface-white);
    padding: 0.875rem 1.25rem;
    border-radius: var(--radius-sm);
    box-shadow: var(--shadow-Strong);
  }

  .about-image-badge strong {
    display: block;
    font-size: 1.5rem;
    font-weight: 900;
    line-height: 1;
  }

  .about-image-badge span {
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
  }

  /* Corporate Principles Grid (.corporate-group from design.css) */
  .corporate-group {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(min(100%, 20rem), 1fr));
    gap: 1.75rem;
    margin-block-start: 3.5rem;
  }

  .corporate-card {
    background-color: var(--surface-white);
    border: 1px solid rgba(146, 164, 179, 0.18);
    border-radius: var(--radius-sm);
    padding: 2rem;
    box-shadow: 0 10px 25px rgba(41, 46, 58, 0.1);
    transition: transform 0.25s ease, box-shadow 0.25s ease, border-color 0.25s ease;
  }

  .corporate-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-card-hover);
    border-color: var(--primary-color);
  }

  .corporate-card h3 {
    position: relative;
    font-size: 1.25rem;
    padding-inline-start: 2.125rem;
    margin-block-end: 0.875rem;
    color: var(--text-heading);
    text-transform: uppercase;
  }

  .corporate-card h3::before {
    content: "";
    position: absolute;
    inset-block-start: 0.1rem;
    inset-inline-start: 0;
    inline-size: 1.375rem;
    block-size: 1.375rem;
    background-color: var(--secondary-color);
    border-radius: 0.3125rem;
    transition: transform 0.25s ease, background-color 0.25s ease;
  }

  .corporate-card:hover h3::before {
    transform: rotate(12deg) scale(1.1);
    background-color: var(--primary-color);
  }

  .corporate-card p {
    font-size: 0.96875rem;
    color: var(--text-body);
    line-height: 1.65;
  }

  /* 6. High-Contrast Dark Section: "Önce İnsan" & Video Reference (#0a181c) */
  .dark-contrast-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(min(100%, 26rem), 1fr));
    gap: clamp(2rem, 4.5vw, 4rem);
    align-items: center;
  }

  .feature-quote-box {
    background-color: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.12);
    border-inline-start: 4px solid var(--secondary-color);
    border-radius: var(--radius-sm);
    padding: 2rem;
    backdrop-filter: blur(6px);
  }

  .feature-quote-box blockquote {
    color: var(--surface-white);
    font-size: clamp(1.25rem, 1.1rem + 0.8vw, 1.625rem);
    font-weight: 800;
    margin-block-end: 0.5rem;
  }

  .feature-quote-box figcaption {
    color: var(--primary-color);
    font-weight: 700;
    font-size: 0.9375rem;
    margin-block-end: 1.25rem;
  }

  .feature-quote-box p {
    color: var(--text-on-dark-muted);
    font-size: 1rem;
    line-height: 1.7;
  }

  .feature-quote-box p + p {
    margin-block-start: 0.875rem;
  }

  /* Video Reference Card (from live_home.html) */
  .video-reference-card {
    position: relative;
    border-radius: var(--radius-sm);
    overflow: clip;
    box-shadow: var(--shadow-Strong);
    border: 2px solid rgba(255, 255, 255, 0.16);
    background-color: var(--surface-darker);
  }

  .video-reference-title-bar {
    padding: 1rem 1.25rem;
    background-color: rgba(17, 17, 17, 0.92);
    color: var(--surface-white);
    font-weight: 800;
    font-size: 1.0625rem;
    border-block-end: 1px solid rgba(255, 255, 255, 0.1);
    display: flex;
    align-items: center;
    gap: 0.625rem;
  }

  .video-reference-title-bar span {
    color: var(--secondary-color);
  }

  .video-trigger-btn {
    appearance: none;
    border: 0;
    padding: 0;
    inline-size: 100%;
    position: relative;
    cursor: pointer;
    display: block;
    background: var(--surface-darker);
  }

  .video-trigger-btn img {
    inline-size: 100%;
    aspect-ratio: 16 / 9;
    object-fit: cover;
    filter: brightness(0.82);
    transition: transform 0.5s ease, filter 0.35s ease;
  }

  .video-trigger-btn:hover img {
    transform: scale(1.04);
    filter: brightness(0.95);
  }

  .video-play-badge {
    position: absolute;
    inset-block-start: 50%;
    inset-inline-start: 50%;
    transform: translate(-50%, -50%);
    inline-size: 4.5rem;
    block-size: 4.5rem;
    border-radius: 50%;
    background-color: var(--primary-color);
    color: var(--surface-white);
    display: grid;
    place-content: center;
    box-shadow: 0 0 0 10px rgba(2, 153, 214, 0.28);
    transition: transform 0.25s ease, background-color 0.25s ease, box-shadow 0.25s ease;
  }

  .video-trigger-btn:hover .video-play-badge {
    transform: translate(-50%, -50%) scale(1.12);
    background-color: var(--secondary-color);
    box-shadow: 0 0 0 14px rgba(89, 171, 76, 0.35);
  }

  .video-play-badge svg {
    inline-size: 2rem;
    block-size: 2rem;
    fill: currentColor;
  }

  /* 7. Granül Section (Lead Banner + 3x2 Real Granule Gallery Cards) */
  .granul-lead-banner {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(min(100%, 20rem), 1fr));
    gap: 1.75rem;
    background-color: var(--surface-white);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-sm);
    padding: 1.75rem;
    margin-block-end: 2.25rem;
    box-shadow: var(--shadow-card);
    align-items: center;
  }

  .granul-lead-banner img {
    inline-size: 100%;
    block-size: 15.5rem;
    object-fit: cover;
    border-radius: var(--radius-sm);
  }

  .granul-cards-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(min(100%, 21rem), 1fr));
    grid-auto-rows: auto 1fr auto;
    gap: 1.75rem;
  }

  .granul-card {
    grid-row: span 3;
    display: grid;
    grid-template-rows: auto 1fr auto;
    grid-template-rows: subgrid;
    background-color: var(--surface-white);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-sm);
    overflow: clip;
    box-shadow: var(--shadow-card);
    transition: transform 0.25s ease, box-shadow 0.25s ease, border-color 0.25s ease;
  }

  .granul-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-card-hover);
    border-color: var(--primary-color);
  }

  .granul-card-media {
    position: relative;
    overflow: clip;
    background-color: var(--surface-darker);
    cursor: zoom-in;
  }

  .granul-card-media img {
    inline-size: 100%;
    block-size: 15rem;
    object-fit: cover;
    transition: transform 0.5s ease;
  }

  .granul-card:hover .granul-card-media img {
    transform: scale(1.08);
  }

  .granul-code-badge {
    position: absolute;
    inset-block-start: 0.75rem;
    inset-inline-start: 0.75rem;
    padding-block: 0.25rem;
    padding-inline: 0.65rem;
    background-color: var(--primary-color);
    color: var(--surface-white);
    font-size: 0.75rem;
    font-weight: 800;
    border-radius: var(--radius-sm);
    text-transform: uppercase;
    letter-spacing: 0.04em;
    box-shadow: var(--shadow-header);
  }

  .granul-zoom-hint {
    position: absolute;
    inset-block-end: 0.65rem;
    inset-inline-end: 0.65rem;
    background-color: rgba(17, 17, 17, 0.75);
    color: var(--surface-white);
    font-size: 0.75rem;
    font-weight: 700;
    padding: 0.25rem 0.6rem;
    border-radius: var(--radius-sm);
  }

  .granul-card-body {
    padding: 1.375rem 1.5rem;
  }

  .granul-card-body h3 {
    font-size: 1.25rem;
    color: var(--text-heading);
    text-transform: uppercase;
    margin-block-end: 0.5rem;
    transition: color 0.2s ease;
  }

  .granul-card:hover .granul-card-body h3 {
    color: var(--secondary-color);
  }

  .granul-card-body p {
    font-size: 0.9375rem;
    color: var(--text-body);
    line-height: 1.6;
  }

  .granul-card-footer {
    padding: 0 1.5rem 1.5rem;
    display: flex;
    gap: 0.5rem;
  }

  .granul-card-footer .btn {
    inline-size: 100%;
    padding-block: 0.7rem;
    padding-inline: 1rem;
    font-size: 0.875rem;
    min-block-size: 2.75rem;
  }

  /* 8. Contact Section (.contact-bottom from design.css) */
  .contact-cards-row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(min(100%, 19rem), 1fr));
    gap: 1.5rem;
  }

  .contact-info-card {
    background-color: var(--surface-white);
    border: 1px solid var(--border-light);
    border-block-start: 4px solid var(--primary-color);
    border-radius: var(--radius-sm);
    padding: 1.75rem;
    box-shadow: var(--shadow-card);
    display: flex;
    align-items: flex-start;
    gap: 1.125rem;
    transition: transform 0.25s ease, box-shadow 0.25s ease;
  }

  .contact-info-card:nth-child(2) {
    border-block-start-color: var(--secondary-color);
  }

  .contact-info-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-card-hover);
  }

  .contact-icon-circle {
    inline-size: 3.25rem;
    block-size: 3.25rem;
    border-radius: 50%;
    background-color: rgba(2, 153, 214, 0.12);
    color: var(--primary-color);
    display: grid;
    place-content: center;
    flex-shrink: 0;
  }

  .contact-info-card:nth-child(2) .contact-icon-circle {
    background-color: rgba(89, 171, 76, 0.14);
    color: var(--secondary-color);
  }

  .contact-icon-circle svg {
    inline-size: 1.5rem;
    block-size: 1.5rem;
    fill: currentColor;
  }

  .contact-info-card h3 {
    font-size: 0.875rem;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    color: var(--text-muted);
    margin-block-end: 0.35rem;
  }

  .contact-info-value {
    font-size: 1.25rem;
    font-weight: 900;
    color: var(--text-heading);
    display: block;
  }

  .contact-info-value:hover {
    color: var(--primary-color);
  }

  /* 9. Original Footer (#111111) with Floating White .newsletter Overlap Card */
  .footer {
    margin-block-start: 7.5rem;
    padding-block: 3rem 1.75rem;
    background-color: var(--surface-darker);
    color: var(--surface-white);
    position: relative;
  }

  .footer .container {
    position: relative;
  }

  .newsletter {
    display: flex;
    flex-flow: row wrap;
    justify-content: space-between;
    align-items: center;
    gap: 1.5rem;
    padding: 2.25rem 2.5rem;
    margin-block-start: -6.75rem;
    margin-block-end: 3rem;
    background-color: var(--surface-white);
    border-radius: var(--radius-sm);
    border-inline-start: 6px solid var(--secondary-color);
    box-shadow: 0 16px 44px rgba(10, 24, 28, 0.22);
  }

  .newsletter-text span {
    display: block;
    color: var(--text-contrast);
    font-size: clamp(1.25rem, 1.1rem + 0.6vw, 1.55rem);
    font-weight: 800;
  }

  .newsletter-text p {
    margin-block-start: 0.35rem;
    color: var(--text-muted);
    font-size: 1rem;
  }

  .footer-nav {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(13rem, 1fr));
    gap: 2rem;
    padding-block: 1rem 2.5rem;
  }

  .footer-brand-col svg {
    inline-size: 11rem;
    block-size: auto;
    margin-block-end: 0.875rem;
  }

  .footer-brand-col svg path {
    fill: var(--surface-white) !important;
  }

  .footer-nav-box h2 {
    margin-block-end: 0.875rem;
    color: var(--surface-white);
    font-size: 1.0625rem;
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: 0.03em;
  }

  .footer-nav-box ul li:not(:last-child) {
    margin-block-end: 0.45rem;
  }

  .footer-nav-box ul li a {
    padding-block: 0.2rem;
    color: rgba(255, 255, 255, 0.86);
    display: inline-flex;
    align-items: center;
    gap: 0.625rem;
    font-size: 0.9375rem;
  }

  .footer-nav-box ul li a:hover {
    color: var(--primary-color);
    transform: translateX(3px);
  }

  .footer-nav-box ul li a svg {
    inline-size: 1rem;
    block-size: 1rem;
    flex-shrink: 0;
  }

  .footer-bottom {
    padding-block-start: 1.5rem;
    display: flex;
    flex-flow: row wrap;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    border-block-start: 1px solid #363636;
    font-size: 0.875rem;
    color: rgba(255, 255, 255, 0.78);
  }

  .footer-credit {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
  }

  .footer-credit a {
    color: var(--surface-white);
    font-weight: 700;
    border-block-end: 1px solid var(--primary-color);
    padding-block-end: 1px;
  }

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

  /* 10. Floating Pulsing WhatsApp Button (.mobile-circle from design.css) */
  .mobile-circle {
    inset-block-end: 2.5rem;
    inset-inline-end: 2.25rem;
    z-index: 90;
    position: fixed;
    inline-size: 3.75rem;
    block-size: 3.75rem;
  }

  .mobile-circle a {
    inline-size: 3.75rem;
    block-size: 3.75rem;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: var(--whatsapp-green);
    border-radius: 50%;
    position: relative;
    z-index: 2;
    box-shadow: 0 8px 24px rgba(80, 186, 34, 0.45);
  }

  .mobile-circle a:hover {
    transform: scale(1.08);
  }

  .mobile-circle a svg {
    inline-size: 1.625rem;
    block-size: 1.625rem;
    fill: var(--surface-white);
  }

  .status-icon {
    inline-size: 3.75rem;
    block-size: 3.75rem;
    background-color: var(--whatsapp-green);
    border-radius: 50%;
    position: absolute;
    inset: 0;
    pointer-events: none;
  }

  /* Native Modal Dialogs (Video & Lightbox) */
  .media-dialog {
    margin: auto;
    inline-size: min(92vw, 56rem);
    border: 0;
    border-radius: var(--radius-md);
    background-color: var(--surface-darker);
    color: var(--surface-white);
    padding: 0;
    box-shadow: var(--shadow-Strong);
    overflow: clip;
  }

  .media-dialog::backdrop {
    background-color: rgba(10, 24, 28, 0.82);
    backdrop-filter: blur(4px);
  }

  .dialog-bar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.875rem 1.25rem;
    background-color: #1a262b;
  }

  .dialog-bar h2 {
    color: var(--surface-white);
    font-size: 1rem;
  }

  .dialog-close-btn {
    appearance: none;
    border: 0;
    background-color: rgba(255, 255, 255, 0.12);
    color: var(--surface-white);
    inline-size: 2.25rem;
    block-size: 2.25rem;
    border-radius: var(--radius-sm);
    cursor: pointer;
    font-weight: 800;
  }

  .dialog-close-btn:hover {
    background-color: var(--primary-color);
  }

  .video-Aspect {
    inline-size: 100%;
    aspect-ratio: 16 / 9;
    border: 0;
  }
}

@layer animations {
  @keyframes waves {
    0% {
      transform: scale(1);
      opacity: 0.75;
    }
    100% {
      transform: scale(2.35);
      opacity: 0;
    }
  }

  @keyframes reveal-up {
    from {
      opacity: 0;
      transform: translateY(2rem);
    }
    to {
      opacity: 1;
      transform: translateY(0);
    }
  }

  @media (prefers-reduced-motion: no-preference) {
    .delay1 {
      animation: waves 2.5s linear 0.1s infinite;
    }

    .delay2 {
      animation: waves 2.5s linear 0.8s infinite;
    }

    /* Progressive enhancement: CSS Scroll-Driven View Timeline entry animations */
    @supports ((animation-timeline: view()) and (animation-range: entry)) {
      .reveal-on-scroll {
        animation: reveal-up auto cubic-bezier(0.22, 1, 0.36, 1) backwards;
        animation-timeline: view();
        animation-range: entry 5% cover 22%;
      }
    }

    /* Fallback class driven by IntersectionObserver when view() is unsupported */
    .js-reveal-fallback {
      opacity: 0;
      transform: translateY(1.75rem);
      transition: opacity 0.6s ease, transform 0.6s cubic-bezier(0.22, 1, 0.36, 1);
    }

    .js-reveal-fallback.is-visible {
      opacity: 1;
      transform: translateY(0);
    }
  }
}

@layer utilities {
  .visually-hidden:where(:not(:focus-within, :active)) {
    position: absolute !important;
    clip-path: inset(50%) !important;
    overflow: hidden !important;
    width: 1px !important;
    height: 1px !important;
    margin: -1px !important;
    padding: 0 !important;
    border: 0 !important;
    white-space: nowrap !important;
  }
}