/* ==========================================================================
   DESIGN SYSTEM TOKENS & RESET
   ========================================================================== */

@layer reset, base, theme, layout, components, utilities;

@layer reset {
  *, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
  }

  html {
    scroll-behavior: smooth;
    color-scheme: light;
    padding-bottom: env(safe-area-inset-bottom, 0);
    padding-top: env(safe-area-inset-top, 0);
  }

  body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
  }

  img {
    max-inline-size: 100%;
    block-size: auto;
    display: block;
  }

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

  a {
    color: inherit;
    text-decoration: none;
  }
}

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

    /* Color Tokens (OKLCH color space for high vibrancy and precision) */
    --color-green-primary: oklch(0.62 0.17 143); /* Accent green */
    --color-green-light: oklch(0.97 0.015 143);  /* Very soft mint green */
    --color-slate-900: oklch(0.18 0.02 240);     /* Dark text */
    --color-slate-600: oklch(0.45 0.02 240);     /* Muted body text */
    --color-slate-100: oklch(0.96 0.01 240);     /* Icon background */
    --color-slate-50: oklch(0.98 0.005 240);     /* Section 2 background */
    --color-white: oklch(1 0 0);                 /* Card background / pure white */
    
    /* Layout & Spacing */
    --header-height: 4.25rem;
    --transition-smooth: 0.4s cubic-bezier(0.16, 1, 0.3, 1);
  }
}

@layer base {
  body {
    background-color: var(--color-white);
    color: var(--color-slate-900);
    line-height: 1.4;
  }

  h1, h2, h3 {
    font-family: 'Outfit', sans-serif;
    font-weight: 700;
    line-height: 1.15;
  }
}

/* ==========================================================================
   LAYOUT (Scroll Snapping, Header)
   ========================================================================== */

@layer layout {
  /* Scroll Container */
  .scroll-container {
    inline-size: 100%;
  }

  /* Fullscreen Sections */
  .fullscreen-section {
    min-block-size: 100dvh;
    position: relative;
    display: grid;
    place-items: center;
    padding-block-start: var(--header-height);
    inline-size: 100%;
  }

  /* Fixed Glassmorphism Header */
  .main-header {
    position: fixed;
    inset-block-start: 0;
    inset-inline: 0;
    block-size: var(--header-height);
    z-index: 100;
    display: flex;
    align-items: center;
    background-color: oklch(1 0 0 / 0.75);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-block-end: 1px solid oklch(0 0 0 / 0.05);
    transition: background-color 0.3s ease;
  }

  .header-container {
    inline-size: 100%;
    max-inline-size: 1400px;
    margin-inline: auto;
    padding-inline: 2.5rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
  }

  .logo {
    font-family: 'Outfit', sans-serif;
    font-weight: 800;
    font-size: 1.5rem;
    letter-spacing: -0.03em;
    color: var(--color-slate-900);
    display: flex;
    align-items: center;
    gap: 0.5rem;
  }

  .logo-dot {
    inline-size: 0.5rem;
    aspect-ratio: 1;
    background-color: var(--color-green-primary);
    border-radius: 50%;
  }

  .logo-img {
    block-size: 1.85rem;
    inline-size: auto;
    display: block;
  }

  .header-nav-group {
    display: flex;
    align-items: center;
    gap: 1rem;
  }

  .nav-menu ul {
    list-style: none;
    display: flex;
    align-items: center;
    gap: 2.5rem;
  }

  .nav-link {
    font-weight: 500;
    font-size: 0.95rem;
    color: var(--color-slate-600);
    transition: color 0.3s ease;
    position: relative;
  }

  .nav-link:hover {
    color: var(--color-slate-900);
  }

  /* Keyboard Focus Rings */
  .nav-link:focus-visible,
  .logo:focus-visible,
  button:focus-visible,
  a:focus-visible,
  input:focus-visible,
  select:focus-visible,
  textarea:focus-visible {
    outline: 2px solid var(--color-green-primary);
    outline-offset: 3px;
    border-radius: 4px;
  }

  /* Language Switcher Styling */
  .lang-select-wrapper {
    position: relative;
    display: inline-flex;
    align-items: center;
    margin-inline-start: 1rem;
  }

  .lang-select {
    appearance: none;
    background-color: transparent;
    border: 1px solid oklch(0 0 0 / 0.1);
    border-radius: 0.5rem;
    padding: 0.35rem 1.65rem 0.35rem 0.55rem;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--color-slate-600);
    cursor: pointer;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 24 24' stroke='currentColor' stroke-width='2.5'%3E%3Cpath stroke-linecap='round' stroke-linejoin='round' d='M19.5 8.25l-7.5 7.5-7.5-7.5'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 0.45rem center;
    background-size: 0.7rem;
    transition: border-color 0.2s ease, background-color 0.2s ease, color 0.2s ease;
  }

  .lang-select:hover {
    border-color: var(--color-green-primary);
    background-color: var(--color-slate-50);
    color: var(--color-slate-900);
  }
}

/* ==========================================================================
   SECTION 1: HERO & IMAGE GRID
   ========================================================================== */

@layer components {
  .hero-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    inline-size: 100%;
    max-inline-size: 1400px;
    margin-inline: auto;
    padding-inline: 2.5rem;
    gap: 4rem;
    align-items: center;
  }

  .hero-left {
    display: flex;
    justify-content: flex-start;
  }

  .hero-text-wrapper {
    max-inline-size: 85%;
    text-align: left;
    display: flex;
    flex-direction: column;
    justify-content: center;
  }

  .hero-section {
    background-color: oklch(0.06 0.01 240); /* Premium dark background fallback */
    background-image: linear-gradient(to bottom, rgba(6, 6, 6, 0.75), rgba(6, 6, 6, 0.75)), url('assets/colosseum.webp');
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    color: var(--color-white);
  }

  .hero-title {
    font-size: clamp(1.8rem, 2.5vw, 2.8rem);
    line-height: 1.15;
    letter-spacing: -0.02em;
    color: var(--color-white);
    margin-block-end: 1.25rem;
    text-wrap: balance;
  }

  .hero-subtitle {
    font-size: 1.05rem;
    line-height: 1.45;
    color: oklch(0.85 0.01 240);
    margin-block-end: 2rem;
    text-wrap: pretty;
  }

  .hero-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 1rem;
  }

  .hero-list li {
    display: flex;
    align-items: center;
    gap: 0.85rem;
    font-weight: 400;
    color: var(--color-white);
    font-size: 0.95rem;
  }

  .list-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    inline-size: 1.25rem;
    aspect-ratio: 1;
    border-radius: 50%;
    background-color: var(--color-green-primary);
    color: var(--color-white);
    padding: 0.2rem;
    flex-shrink: 0;
  }

  /* Hero action buttons */
  .hero-actions {
    display: flex;
    gap: 1rem;
    margin-block-start: 2rem;
    margin-block-end: 0.5rem;
  }

  .btn-hero {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 1rem 2rem;
    border-radius: 0.75rem; /* rounded rectangle matching submit-btn */
    font-size: 0.95rem;
    font-weight: 600;
    cursor: pointer;
    transition: background-color var(--transition-smooth), border-color var(--transition-smooth), transform 0.1s ease;
  }

  .btn-hero-primary {
    background-color: var(--color-green-primary);
    color: var(--color-white);
    border: none;
  }

  .btn-hero-primary:hover {
    background-color: oklch(0.55 0.16 143);
  }

  .btn-hero-primary:active {
    transform: scale(0.98);
  }

  .btn-hero-secondary {
    background-color: transparent;
    color: var(--color-white);
    border: 1px solid oklch(1 0 0 / 0.15);
  }

  .btn-hero-secondary:hover {
    background-color: oklch(1 0 0 / 0.05);
    border-color: oklch(1 0 0 / 0.3);
  }

  .btn-hero-secondary:active {
    transform: scale(0.98);
  }

  .hero-subtext {
    font-size: 0.75rem;
    color: var(--color-white);
    margin-block-start: 0.5rem;
  }

  /* Image Grid Layout (Right Column) */
  .hero-right {
    inline-size: 100%;
  }

  .image-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1.5rem;
  }

  .grid-item {
    position: relative;
    border-radius: 1.5rem;
    overflow: hidden;
    aspect-ratio: 1;
    background-color: oklch(0.12 0.01 240);
    box-shadow: 0 4px 25px oklch(0 0 0 / 0.25);
    transition: transform var(--transition-smooth), box-shadow var(--transition-smooth);
  }

  .grid-item img {
    inline-size: 100%;
    block-size: 100%;
    object-fit: cover;
    transition: transform var(--transition-smooth);
  }

  /* Staggered Grid Positions */
  .grid-item.item-1 { transform: translateY(-15px); }
  .grid-item.item-2 { transform: translateY(15px); }
  .grid-item.item-3 { transform: translateY(-15px); }
  .grid-item.item-4 { transform: translateY(15px); }

  /* Premium Hover Interactions */
  .grid-item:hover {
    box-shadow: 0 20px 40px oklch(0 0 0 / 0.08);
  }

  .grid-item.item-1:hover { transform: translateY(-25px) scale(1.02); }
  .grid-item.item-2:hover { transform: translateY(5px) scale(1.02); }
  .grid-item.item-3:hover { transform: translateY(-25px) scale(1.02); }
  .grid-item.item-4:hover { transform: translateY(5px) scale(1.02); }

  .grid-item:hover img {
    transform: scale(1.06);
  }
}

/* ==========================================================================
   SECTION 2: WORKFLOW PROCESS
   ========================================================================== */

@layer components {
  .workflow-section {
    background-color: var(--color-slate-50);
    display: flex;
    flex-direction: column;
    justify-content: center;
    padding-block-start: var(--header-height);
    padding-block-end: var(--header-height);
    position: relative;
  }

  .workflow-container {
    inline-size: 100%;
    max-inline-size: 1400px;
    margin-inline: auto;
    padding-inline: 2.5rem;
    display: flex;
    flex-direction: column;
    justify-content: center;
    gap: 2rem;
  }

  /* Center-aligned Title Group */
  .workflow-header-group {
    text-align: center;
    max-inline-size: 700px;
    margin-inline: auto;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.8rem;
  }

  .category-tag {
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.15em;
    color: var(--color-green-primary);
  }

  .workflow-main-title {
    font-size: clamp(2rem, 3.5vw, 2.75rem);
    color: var(--color-slate-900);
    letter-spacing: -0.02em;
    text-wrap: balance;
  }

  .workflow-subtitle {
    font-size: 1.25rem;
    line-height: 1.45;
    color: var(--color-slate-600);
    text-wrap: pretty;
  }

  /* Cards Grid */
  .cards-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1.5rem;
    inline-size: 100%;
  }

  /* Step Card Item */
  .step-card {
    background-color: var(--color-white);
    border-radius: 2rem;
    padding: 2.5rem 1.75rem;
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    box-shadow: 
      0 10px 30px oklch(0 0 0 / 0.02),
      0 1px 3px oklch(0 0 0 / 0.01);
    transition: transform var(--transition-smooth), box-shadow var(--transition-smooth);
    position: relative;
    border: 1px solid oklch(0 0 0 / 0.01);
  }

  .card-header {
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
    margin-block-end: 1.5rem;
    width: 100%;
  }

  .step-number {
    inline-size: 2.25rem;
    aspect-ratio: 1;
    border-radius: 50%;
    background-color: var(--color-green-light);
    color: var(--color-green-primary);
    font-weight: 700;
    font-size: 0.85rem;
    display: flex;
    align-items: center;
    justify-content: center;
  }

  .icon-wrapper {
    inline-size: 3.5rem;
    aspect-ratio: 1;
    border-radius: 1rem;
    background-color: var(--color-slate-100);
    color: var(--color-slate-900);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0.85rem;
    transition: background-color 0.3s ease, color 0.3s ease;
  }

  .icon-wrapper svg {
    inline-size: 100%;
    block-size: 100%;
  }

  .card-title {
    font-size: 1.35rem;
    font-weight: 700;
    color: var(--color-slate-900);
    margin-block-end: 0.75rem;
    letter-spacing: -0.01em;
  }

  .card-description {
    font-size: 0.9rem;
    line-height: 1.4;
    color: var(--color-slate-600);
    text-wrap: pretty;
  }

  .step-card:hover {
    transform: translateY(-8px);
    box-shadow: 
      0 20px 40px oklch(0 0 0 / 0.05),
      0 1px 3px oklch(0 0 0 / 0.01);
    border-color: oklch(0 0 0 / 0.03);
  }

  .step-card:hover .icon-wrapper {
    background-color: var(--color-slate-900);
    color: var(--color-white);
  }

  .workflow-actions {
    display: flex;
    justify-content: center;
    margin-block-start: 1rem;
    width: 100%;
  }

  .workflow-actions .btn-hero-primary {
    width: 100%;
    max-inline-size: 500px;
    padding: 1rem;
  }
}

/* ==========================================================================
   ORDER FORM & SUCCESS CARDS
   ========================================================================= */

@layer components {
  .submit-btn {
    background-color: var(--color-green-primary);
    color: var(--color-white);
    border: none;
    border-radius: 0.75rem;
    padding: 1rem;
    font-weight: 600;
    font-size: 0.95rem;
    cursor: pointer;
    transition: background-color 0.2s ease, transform 0.1s ease;
    width: 100%;
  }

  .submit-btn:hover {
    background-color: oklch(0.55 0.16 143);
  }

  .submit-btn:active {
    transform: scale(0.98);
  }

  /* ==========================================================================
     ORDER SECTION & FORM STYLES
     ========================================================================== */
  .order-section {
    background-color: oklch(0.06 0.01 240);
    color: var(--color-white);
    display: flex;
    flex-direction: column;
    justify-content: center;
    padding-block-start: var(--header-height);
    padding-block-end: 7.5rem; /* Reserve space for footer */
    position: relative;
    inline-size: 100%;
  }

  .order-container {
    inline-size: 100%;
    max-inline-size: 1400px;
    margin-inline: auto;
    padding-inline: 2.5rem;
    display: flex;
    flex-direction: column;
    justify-content: center;
    gap: 2.5rem;
  }

  .order-header-group {
    text-align: center;
    max-inline-size: 700px;
    margin-inline: auto;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.8rem;
  }

  .order-main-title {
    font-size: clamp(2rem, 3.5vw, 2.75rem);
    color: var(--color-white);
    letter-spacing: -0.02em;
    text-wrap: balance;
  }

  .order-subtitle {
    font-size: 1rem;
    line-height: 1.45;
    color: oklch(0.85 0.01 240);
    text-wrap: pretty;
  }

  .order-card {
    background-color: oklch(1 0 0 / 0.03);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid oklch(1 0 0 / 0.08);
    border-radius: 2rem;
    padding: 3rem;
    max-inline-size: 720px;
    inline-size: 100%;
    margin-inline: auto;
    box-shadow: 0 25px 50px oklch(0 0 0 / 0.3);
    position: relative;
    overflow: hidden;
  }

  .order-form {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    width: 100%;
  }

  .form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
    width: 100%;
  }

  .order-form .form-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    width: 100%;
  }

  .order-form .form-group label {
    color: oklch(0.9 0.01 240);
    font-size: 0.85rem;
    font-weight: 600;
  }

  .order-form input[type="text"],
  .order-form input[type="tel"],
  .order-form textarea,
  .order-form select {
    background-color: oklch(1 0 0 / 0.04);
    border: 1px solid oklch(1 0 0 / 0.1);
    border-radius: 0.75rem;
    padding: 0.875rem 1rem;
    font-size: 0.95rem;
    color: var(--color-white);
    width: 100%;
    transition: border-color 0.2s ease, background-color 0.2s ease;
  }

  .order-form input[type="text"]::placeholder,
  .order-form input[type="tel"]::placeholder,
  .order-form textarea::placeholder {
    color: oklch(1 0 0 / 0.4);
  }

  .order-form input[type="text"]:focus,
  .order-form input[type="tel"]:focus,
  .order-form textarea:focus,
  .order-form select:focus {
    outline: none;
    border-color: var(--color-green-primary);
    background-color: oklch(1 0 0 / 0.07);
  }

  /* Privacy Checkbox Styles */
  .order-form .form-group-checkbox {
    width: 100%;
    margin-block-start: 0.75rem;
    margin-block-end: 0.75rem;
  }

  .custom-checkbox-container {
    display: flex;
    align-items: flex-start;
    gap: 0.85rem;
    cursor: pointer;
    position: relative;
    user-select: none;
  }

  /* Visually hide default checkbox but keep it accessible for tab navigation and reportValidity */
  .custom-checkbox-container input[type="checkbox"] {
    position: absolute;
    opacity: 0;
    pointer-events: none;
    width: 1.25rem;
    height: 1.25rem;
    margin: 0;
    padding: 0;
  }

  /* Custom checkbox indicator */
  .checkbox-checkmark {
    position: relative;
    flex-shrink: 0;
    height: 1.25rem;
    width: 1.25rem;
    background-color: oklch(1 0 0 / 0.04);
    border: 1px solid oklch(1 0 0 / 0.15);
    border-radius: 0.35rem; /* slightly rounded corners */
    transition: background-color 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease;
    margin-block-start: 0.1rem;
  }

  /* Hover state */
  .custom-checkbox-container:hover input ~ .checkbox-checkmark {
    border-color: var(--color-green-primary);
    background-color: oklch(1 0 0 / 0.08);
  }

  /* Checked state */
  .custom-checkbox-container input:checked ~ .checkbox-checkmark {
    background-color: var(--color-green-primary);
    border-color: var(--color-green-primary);
    box-shadow: 0 0 8px oklch(0.62 0.17 143 / 0.4);
  }

  /* Checkmark symbol (custom check vector) */
  .checkbox-checkmark::after {
    content: "";
    position: absolute;
    display: none;
    left: 6px;
    top: 2px;
    width: 5px;
    height: 9px;
    border: solid var(--color-white);
    border-width: 0 2px 2px 0;
    transform: rotate(45deg);
  }

  /* Show checkmark when checked */
  .custom-checkbox-container input:checked ~ .checkbox-checkmark::after {
    display: block;
  }

  /* Keyboard focus states */
  .custom-checkbox-container input:focus-visible ~ .checkbox-checkmark {
    outline: 2px solid var(--color-green-primary);
    outline-offset: 2px;
  }

  /* Label text styles */
  .checkbox-label-text {
    color: oklch(0.9 0.01 240);
    font-size: 0.85rem;
    font-weight: 500;
    line-height: 1.4;
  }

  /* Make sure the link is extremely obvious */
  .checkbox-label-text a {
    color: var(--color-green-primary) !important;
    text-decoration: underline !important;
    text-underline-offset: 3px;
    font-weight: 600;
    transition: opacity 0.2s ease;
  }

  .checkbox-label-text a:hover {
    opacity: 0.8;
  }

  /* Custom dropdown arrow for order select */
  .select-wrapper {
    position: relative;
    width: 100%;
  }

  .select-wrapper select {
    appearance: none;
    padding-inline-end: 2.5rem;
  }

  .select-wrapper::after {
    content: "";
    position: absolute;
    inset-inline-end: 1rem;
    inset-block-start: 50%;
    transform: translateY(-50%);
    width: 0.8rem;
    height: 0.8rem;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 24 24' stroke='white' stroke-width='2.5'%3E%3Cpath stroke-linecap='round' stroke-linejoin='round' d='M19.5 8.25l-7.5 7.5-7.5-7.5'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-size: contain;
    pointer-events: none;
  }

  /* Success State card styling */
  .order-success {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    padding-block: 2rem;
    animation: fadeIn 0.4s ease;
    width: 100%;
  }

  .success-icon-wrapper {
    width: 4rem;
    height: 4rem;
    border-radius: 50%;
    background-color: var(--color-green-light);
    color: var(--color-green-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-block-end: 1.5rem;
    box-shadow: 0 10px 20px oklch(0.62 0.17 143 / 0.1);
  }

  .success-icon-wrapper svg {
    width: 2rem;
    height: 2rem;
  }

  .success-title {
    font-size: 1.6rem;
    font-weight: 700;
    color: var(--color-white);
    margin-block-end: 0.75rem;
  }

  .success-desc {
    font-size: 0.95rem;
    line-height: 1.5;
    color: oklch(0.85 0.01 240);
    max-width: 480px;
    margin-block-end: 2rem;
  }

  .btn-back {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.75rem 1.75rem;
    border-radius: 1.5rem;
    background-color: oklch(1 0 0 / 0.06);
    border: 1px solid oklch(1 0 0 / 0.15);
    color: var(--color-white);
    font-size: 0.9rem;
    font-weight: 600;
    cursor: pointer;
    transition: background-color 0.2s ease, border-color 0.2s ease;
  }

  .btn-back:hover {
    background-color: oklch(1 0 0 / 0.1);
    border-color: oklch(1 0 0 / 0.3);
  }

  @keyframes fadeIn {
    from { opacity: 0; transform: scale(0.98); }
    to { opacity: 1; transform: scale(1); }
  }
}

/* ==========================================================================
   FOOTER
   ========================================================================== */

@layer components {
  .main-footer {
    background-color: oklch(0.06 0.01 240); /* Rich dark background matching Section 1 */
    color: var(--color-white);
    padding-block: 2rem;
    inline-size: 100%;
    border-block-start: 1px solid oklch(1 0 0 / 0.05);
    position: absolute;
    inset-block-end: 0;
    inset-inline: 0;
  }

  .footer-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    max-inline-size: 1400px;
    margin-inline: auto;
    padding-inline: 2.5rem;
    width: 100%;
  }

  .footer-left {
    display: flex;
    align-items: center;
    gap: 2rem;
  }

  .footer-info {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
    border-inline-start: 1px solid oklch(1 0 0 / 0.15);
    padding-inline-start: 2rem;
    text-align: left;
  }

  .footer-company-name {
    font-size: 0.85rem;
    font-weight: 600;
    color: oklch(0.85 0.01 240);
  }

  .footer-company-inn,
  .footer-company-address {
    font-size: 0.75rem;
    color: oklch(0.55 0.01 240);
    line-height: 1.4;
  }

  .footer-logo {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    line-height: 1;
  }

  .logo-sub {
    font-size: 0.75rem;
    font-weight: 500;
    text-transform: lowercase;
    color: oklch(0.55 0.01 240);
    letter-spacing: 0.05em;
  }

  .logo-main {
    font-family: 'Outfit', sans-serif;
    font-size: 1.6rem;
    font-weight: 700;
    color: oklch(0.85 0.01 240);
    letter-spacing: -0.02em;
    margin-block-start: 0.15rem;
  }

  .footer-right {
    display: flex;
    flex-direction: column;
    align-items: flex-end;
    gap: 0.65rem;
  }

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

  .footer-link {
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--color-white);
    transition: color 0.2s ease;
  }

  .footer-link:hover {
    color: var(--color-green-primary);
  }

  .copyright-info {
    font-size: 0.78rem;
    color: oklch(0.55 0.01 240);
    letter-spacing: -0.01em;
  }
}

/* ==========================================================================
   RESPONSIVE DESIGN (Adaptive Media Queries)
   ========================================================================== */

@media (max-width: 1024px) {
  .scroll-container {
    overflow-y: visible;
    block-size: auto;
  }

  .fullscreen-section {
    min-block-size: auto;
    padding-block: 6rem 4rem;
  }

  .workflow-section {
    padding-block: 6rem 4rem;
    display: block;
  }

  .order-section {
    padding-block: 6rem 6rem;
    display: block;
  }

  .main-footer {
    position: static;
    margin-block-start: 3rem;
  }

  .hero-container {
    grid-template-columns: 1fr;
    gap: 3rem;
  }

  .hero-text-wrapper {
    max-inline-size: 100%;
  }

  .image-grid {
    max-inline-size: 600px;
    margin-inline: auto;
  }

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

  .workflow-container {
    gap: 3.5rem;
  }

  .workflow-actions {
    margin-block-start: -1rem;
  }

  .order-container {
    gap: 3.5rem;
  }
}

@media (max-width: 640px) {
  :root {
    --header-height: 3rem;
  }

  .main-header {
    block-size: 3rem;
  }

  .header-container {
    padding-inline: 0.75rem;
  }

  .header-nav-group {
    display: flex;
    align-items: center;
    gap: 0.25rem;
  }

  .logo {
    font-size: 1.1rem;
    gap: 0.3rem;
  }

  .logo-dot {
    inline-size: 0.35rem;
  }

  .logo-img {
    block-size: 1.5rem;
  }

  .nav-menu ul {
    gap: 0.65rem;
  }

  .nav-link {
    font-size: 0.78rem;
  }

  .fullscreen-section {
    padding-block-start: 3rem;
  }

  .workflow-section {
    padding-block: 4rem 3rem;
  }

  .workflow-actions {
    margin-block-start: -1.75rem;
  }

  .order-section {
    padding-block: 4rem 4rem;
  }

  .hero-container {
    padding-inline: 1.25rem;
    gap: 2rem;
  }

  .hero-title {
    font-size: 1.65rem;
    line-height: 1.15;
    margin-block-end: 1rem;
  }

  .hero-subtitle {
    font-size: 0.95rem;
    line-height: 1.35;
    margin-block-end: 1.5rem;
  }

  .hero-list {
    gap: 0.65rem;
  }

  .hero-list li {
    font-size: 0.88rem;
    line-height: 1.35;
  }

  .hero-actions {
    flex-direction: column;
    gap: 0.75rem;
    width: 100%;
    margin-block-start: 1.75rem;
  }

  .btn-hero {
    width: 100%;
    padding-block: 0.95rem;
    font-size: 0.95rem;
    text-align: center;
  }

  .image-grid {
    gap: 1rem;
  }

  .grid-item {
    border-radius: 1rem;
  }

  .workflow-container {
    padding-inline: 1.25rem;
  }

  .cards-grid {
    grid-template-columns: 1fr;
    gap: 0.85rem;
  }

  .step-card {
    padding: 1.25rem;
    border-radius: 1.25rem;
  }

  .step-card .card-header {
    flex-direction: row;
    justify-content: space-between;
    align-items: center;
    margin-block-end: 0.75rem;
  }

  .step-card .step-number {
    inline-size: 1.85rem;
    font-size: 0.8rem;
  }

  .step-card .icon-wrapper {
    inline-size: 2.75rem;
    padding: 0.6rem;
  }

  .step-card .card-title {
    font-size: 1.15rem;
    margin-block-end: 0.4rem;
  }

  .step-card .card-description {
    font-size: 0.85rem;
    line-height: 1.35;
  }

  .grid-item.item-1,
  .grid-item.item-2,
  .grid-item.item-3,
  .grid-item.item-4 {
    transform: none !important;
  }

  /* Order Form mobile overrides */
  .order-card {
    padding: 2rem 1.25rem;
    border-radius: 1.5rem;
  }

  .order-form .form-row {
    grid-template-columns: 1fr;
    gap: 1.25rem;
  }

  .order-container {
    padding-inline: 1.25rem;
  }

  /* Footer Mobile Styles */
  .main-footer {
    padding-block: 1.25rem;
    margin-block-start: 2rem;
  }

  .footer-container {
    flex-direction: column;
    gap: 0.85rem;
    text-align: center;
    padding-inline: 1rem;
  }

  .footer-logo {
    align-items: center;
  }

  .footer-left {
    flex-direction: column;
    gap: 0.75rem;
    align-items: center;
  }

  .footer-info {
    border-inline-start: none;
    padding-inline-start: 0;
    text-align: center;
    gap: 0.15rem;
  }

  .footer-company-name {
    font-size: 0.8rem;
  }

  .footer-company-inn,
  .footer-company-address {
    font-size: 0.7rem;
    max-width: 280px;
  }

  .logo-main {
    font-size: 1.25rem;
  }

  .logo-sub {
    font-size: 0.7rem;
  }

  .footer-right {
    align-items: center;
    gap: 0.5rem;
  }

  .footer-links {
    gap: 1rem;
  }

  .footer-link {
    font-size: 0.78rem;
  }

  .copyright-info {
    font-size: 0.72rem;
    line-height: 1.4;
  }

  .lang-select-wrapper {
    margin-inline-start: 0.35rem;
  }

  .lang-select {
    padding: 0.25rem 1.25rem 0.25rem 0.45rem;
    font-size: 0.78rem;
    background-position: right 0.35rem center;
    background-size: 0.65rem;
    border-radius: 0.4rem;
  }
}

/* ==========================================================================
   SKIP LINK (a11y)
   ========================================================================== */
.skip-link {
  position: absolute;
  inset-block-start: -100%;
  inset-inline-start: var(--header-height);
  padding: 0.75rem 1.5rem;
  background-color: var(--color-green-primary);
  color: var(--color-white);
  border-radius: 0 0 0.5rem 0.5rem;
  font-weight: 600;
  font-size: 0.875rem;
  z-index: 300;
  transition: inset-block-start 0.2s ease;
  text-decoration: none;
}
.skip-link:focus {
  inset-block-start: 0;
  outline: 3px solid var(--color-green-primary);
  outline-offset: -3px;
}

/* ==========================================================================
   PREFERS-REDUCED-MOTION (a11y)
   ========================================================================== */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
  }
}

/* ==========================================================================
   UTILITY — visually hidden (screen-reader only)
   ========================================================================== */
.visually-hidden {
  position: absolute !important;
  width: 1px !important;
  height: 1px !important;
  clip: rect(1px, 1px, 1px, 1px) !important;
  clip-path: inset(50%) !important;
  overflow: hidden !important;
  white-space: nowrap !important;
  border: 0 !important;
  padding: 0 !important;
  margin: 0 !important;
  opacity: 0 !important;
  visibility: hidden !important;
}

/* ==========================================================================
   404 ERROR PAGE
   ========================================================================== */
.error-page {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 100dvh;
  text-align: center;
  padding: 2rem;
  gap: 1.5rem;
}
.error-content {
  max-width: 400px;
}
.error-code {
  font-family: 'Outfit', sans-serif;
  font-size: clamp(5rem, 15vw, 10rem);
  font-weight: 800;
  color: var(--color-green-primary);
  line-height: 1;
  letter-spacing: -0.04em;
}
.error-heading {
  font-size: clamp(1.5rem, 3vw, 2rem);
  font-weight: 700;
  color: var(--color-slate-900);
  margin-block-end: 0.5rem;
}
.error-description {
  font-size: 1rem;
  color: var(--color-slate-600);
  line-height: 1.5;
}

/* ==========================================================================
   STORAGE NOTICE POPUP
   ========================================================================== */
.storage-notice {
  position: fixed;
  inset-block-end: 1.5rem;
  inset-inline-end: 1.5rem;
  max-inline-size: 400px;
  background-color: oklch(0.06 0.01 240 / 0.85); /* Rich dark background with transparency */
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid oklch(1 0 0 / 0.1);
  border-radius: 0.75rem;
  padding: 1.25rem;
  z-index: 1000;
  box-shadow: 0 10px 30px oklch(0 0 0 / 0.2);
  color: var(--color-white);
  animation: storageNoticeSlideUp 0.5s var(--transition-smooth);
}

.storage-notice-content {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.storage-notice-content p {
  font-size: 0.875rem;
  line-height: 1.5;
  color: oklch(0.85 0.01 240);
  margin: 0;
}

.storage-notice-btn {
  align-self: flex-end;
  background-color: var(--color-green-primary);
  color: var(--color-white);
  border: none;
  padding: 0.5rem 1.25rem;
  border-radius: 0.5rem;
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  transition: background-color 0.2s ease, transform 0.1s ease;
}

.storage-notice-btn:hover {
  background-color: oklch(0.55 0.16 143);
}

.storage-notice-btn:active {
  transform: scale(0.95);
}

@keyframes storageNoticeSlideUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@media (max-width: 576px) {
  .storage-notice {
    inset-inline: 1rem;
    inset-block-end: 1rem;
    max-inline-size: none;
  }
}