/* Goodwave Agency — main stylesheet */

  :root{
    --paper: #EEF3F4; --paper-deep: #E2EAEC; --ink: #0B2436; --ink-soft: #4C6478;
    --accent-signal: #0B5578; --accent-signal-deep: #073B56; --accent-wave: #13A6BE;
    --accent-deep: #0A3A52; --surface-footer: #0B2436; --text-on-dark: #EEF3F4;
    --header-bg: rgba(238,243,244,0.86); --line: rgba(11,36,54,0.14); --line-strong: rgba(11,36,54,0.28);
    --card-bg: #FFFFFF;
    --font-display: 'Space Grotesk', sans-serif; --font-body: 'Inter', sans-serif; --font-mono: 'IBM Plex Mono', monospace;
  }
  html[data-theme="dark"]{
    --paper: #0B1A24; --paper-deep: #0E2530; --ink: #EAF3F5; --ink-soft: #93AEBB;
    --accent-signal: #2C93C4; --accent-signal-deep: #1F739C; --accent-wave: #2FD0E8;
    --accent-deep: #061319; --surface-footer: #050D12; --text-on-dark: #EEF3F4;
    --header-bg: rgba(11,26,36,0.86); --line: rgba(234,243,245,0.10); --line-strong: rgba(234,243,245,0.20);
    --card-bg: #0E2530;
  }
  * { box-sizing: border-box; }
  html { scroll-behavior: smooth; }
  body{ margin:0; background: var(--paper); color: var(--ink); font-family: var(--font-body); line-height: 1.5; -webkit-font-smoothing: antialiased; transition: background .2s ease, color .2s ease; }
  a { color: inherit; }
  :focus-visible{ outline: 2px solid var(--accent-wave); outline-offset: 3px; }
  .wrap{ max-width: 1180px; margin: 0 auto; padding: 0 28px; }

  header.site{ position: sticky; top: 0; z-index: 50; background: var(--header-bg); backdrop-filter: blur(10px); border-bottom: 1px solid var(--line); }
  .header-row{ display:flex; align-items:center; justify-content: space-between; padding: 16px 0; gap: 20px; }
  .logo{ text-decoration: none; display:flex; align-items:center; flex-shrink: 0; }
  .logo-img{ height: 30px; width: auto; display:block; }
  .logo-img.dark-src{ display:none; }
  html[data-theme="dark"] .logo-img.light-src{ display:none; }
  html[data-theme="dark"] .logo-img.dark-src{ display:block; }

  nav.primary{ display:flex; gap: 28px; font-family: var(--font-mono); font-size: 0.8rem; letter-spacing: 0.02em; flex-grow: 1; }
  nav.primary a{ text-decoration:none; color: var(--ink-soft); transition: color .15s ease; white-space: nowrap; }
  nav.primary a:hover{ color: var(--ink); }
  nav.primary a.current{ color: var(--ink); border-bottom: 1px solid var(--accent-wave); padding-bottom: 2px; }

  .header-controls{ display:flex; align-items:center; gap: 10px; flex-shrink:0; }
  .lang-switch{ display:flex; border: 1px solid var(--line-strong); border-radius: 999px; overflow:hidden; font-family: var(--font-mono); font-size: 0.72rem; }
  .lang-btn{ background: none; border: none; color: var(--ink-soft); padding: 7px 11px; cursor: pointer; font-family: var(--font-mono); font-size: 0.72rem; letter-spacing: 0.02em; transition: background .15s ease, color .15s ease; }
  .lang-btn.active{ background: var(--ink); color: var(--paper); }
  .lang-btn:not(.active):hover{ color: var(--ink); }

  .icon-btn{ width: 34px; height: 34px; border-radius: 50%; border: 1px solid var(--line-strong); background: none; color: var(--ink); display:flex; align-items:center; justify-content:center; cursor: pointer; transition: border-color .15s ease; flex-shrink:0; }
  .icon-btn:hover{ border-color: var(--accent-wave); }
  .icon-btn svg{ width:16px; height:16px; }
  .icon-btn .moon-icon{ display:none; }
  html[data-theme="dark"] .icon-btn .sun-icon{ display:none; }
  html[data-theme="dark"] .icon-btn .moon-icon{ display:block; }

  .btn{ font-family: var(--font-mono); font-size: 0.82rem; letter-spacing: 0.01em; padding: 10px 18px; border-radius: 999px; border: 1px solid var(--ink); text-decoration:none; color: var(--ink); white-space: nowrap; transition: all .18s ease; display:inline-block; }
  .btn:hover{ background: var(--ink); color: var(--paper); }
  .btn.primary{ background: var(--accent-signal); border-color: var(--accent-signal); color: white; }
  .btn.primary:hover{ background: var(--accent-signal-deep); border-color: var(--accent-signal-deep); color: white; }

  .hero{ padding: 56px 0 0; }
  .presets{ display:flex; gap: 10px; flex-wrap: wrap; margin-bottom: 40px; }
  .preset{ display:flex; align-items: baseline; gap: 8px; padding: 8px 14px; border: 1px solid var(--line-strong); border-radius: 999px; font-family: var(--font-mono); font-size: 0.78rem; color: var(--ink-soft); text-decoration:none; transition: border-color .15s ease, color .15s ease; }
  .preset:hover{ border-color: var(--accent-wave); color: var(--ink); }
  .preset .freq{ color: var(--accent-wave); font-weight:500; }
  .hero-copy{ max-width: 760px; }
  .eyebrow{ font-family: var(--font-mono); font-size: 0.82rem; color: var(--accent-wave); letter-spacing: 0.04em; margin: 0 0 18px; }
  h1.hero-title{ font-family: var(--font-display); font-weight: 700; font-size: clamp(2.3rem, 5.2vw, 4.3rem); line-height: 1.04; letter-spacing: -0.025em; margin: 0 0 24px; }
  h1.hero-title em{ font-style: normal; color: var(--accent-wave); }
  .hero-sub{ font-size: 1.1rem; color: var(--ink-soft); max-width: 560px; margin: 0 0 36px; }
  .hero-actions{ display:flex; gap: 14px; flex-wrap: wrap; margin-bottom: 56px; }
  .hero-actions .btn{ padding: 13px 24px; font-size: 0.86rem; }
  .wave-strip{ border-top: 1px solid var(--line); position: relative; }
  canvas#waveform{ display:block; width: 100%; height: 140px; }
  .wave-caption{ display:flex; justify-content: space-between; font-family: var(--font-mono); font-size: 0.72rem; color: var(--ink-soft); padding: 10px 28px 22px; border-bottom: 1px solid var(--line); }

  section{ padding: 96px 0; }
  .section-head{ display:flex; justify-content: space-between; align-items: flex-end; gap: 24px; margin-bottom: 52px; flex-wrap: wrap; }
  .section-label{ font-family: var(--font-mono); font-size: 0.78rem; color: var(--accent-wave); letter-spacing: 0.04em; margin: 0 0 12px; }
  h2.section-title{ font-family: var(--font-display); font-weight: 600; font-size: clamp(1.7rem, 3vw, 2.4rem); letter-spacing: -0.02em; margin: 0; max-width: 560px; }
  .section-note{ color: var(--ink-soft); max-width: 320px; font-size: 0.95rem; margin: 0; }

  .services-grid{ display:grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 1px; background: var(--line); border: 1px solid var(--line); }
  .service-card{ background: var(--card-bg); padding: 30px 26px; display:flex; flex-direction: column; gap: 18px; min-height: 240px; }
  .service-freq{ font-family: var(--font-mono); font-size: 0.78rem; color: var(--accent-wave); }
  .service-icon{ width: 100%; height: 36px; }
  .service-icon path{ stroke: var(--accent-wave); }
  .service-name{ font-family: var(--font-display); font-weight: 600; font-size: 1.15rem; margin: 0; }
  .service-desc{ color: var(--ink-soft); font-size: 0.92rem; margin: 0; flex-grow: 1; }

  .process{ background: var(--paper-deep); }
  .process-line{ position: relative; display:grid; grid-template-columns: repeat(5, 1fr); gap: 20px; }
  .process-line::before{ content:""; position:absolute; top: 21px; left: 0; right: 0; height: 1px; background: var(--line-strong); }
  .process-step{ position: relative; padding-top: 56px; }
  .process-num{ position:absolute; top: 0; left: 0; width: 42px; height: 42px; border-radius: 50%; background: var(--paper-deep); border: 1px solid var(--line-strong); display:flex; align-items:center; justify-content:center; font-family: var(--font-mono); font-size: 0.8rem; color: var(--ink); }
  .process-step:first-child .process-num{ background: var(--accent-signal); border-color: var(--accent-signal); color: white; }
  .process-title{ font-family: var(--font-display); font-weight: 600; font-size: 1.05rem; margin: 0 0 10px; }
  .process-desc{ color: var(--ink-soft); font-size: 0.88rem; margin: 0; }

  .work-grid{ display:grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 24px; }
  .work-card{ border: 1px solid var(--line); border-radius: 14px; overflow: hidden; text-decoration: none; color: var(--ink); display:block; background: var(--card-bg); transition: transform .18s ease, border-color .18s ease; }
  .work-card:hover{ transform: translateY(-4px); border-color: var(--accent-wave); }
  .work-thumb{ height: 168px; position: relative; }
  .work-thumb svg{ width:100%; height:100%; display:block; }
  .work-body{ padding: 20px 22px 24px; }
  .work-tag{ font-family: var(--font-mono); font-size: 0.72rem; color: var(--accent-wave); display:block; margin-bottom: 8px; }
  .work-title{ font-family: var(--font-display); font-weight: 600; font-size: 1.05rem; margin: 0 0 6px; }
  .work-desc{ color: var(--ink-soft); font-size: 0.86rem; margin: 0; }
  .view-all-link{ display:inline-flex; align-items:center; gap:8px; margin-top:36px; font-family: var(--font-mono); font-size: 0.85rem; text-decoration:none; color: var(--accent-signal); }
  html[data-theme="dark"] .view-all-link{ color: var(--accent-wave); }

  .stats-band{ background: var(--accent-deep); color: var(--text-on-dark); }
  .stats-band .section-label{ color: var(--accent-wave); }
  .stats-band .section-note{ color: rgba(238,243,244,0.65); }
  .stats-band h2.section-title{ color: var(--text-on-dark); }
  .stats-grid{ display:grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); gap: 32px; }
  .stat-num{ font-family: var(--font-mono); font-size: clamp(2rem, 4vw, 2.8rem); color: var(--text-on-dark); margin: 0 0 8px; }
  .stat-label{ color: rgba(238,243,244,0.65); font-size: 0.88rem; margin: 0; }

  footer.site{ background: var(--surface-footer); color: var(--text-on-dark); padding: 96px 0 40px; }
  .cta-title{ font-family: var(--font-display); font-weight: 700; font-size: clamp(1.9rem, 4vw, 3rem); letter-spacing: -0.02em; max-width: 620px; margin: 0 0 32px; }
  .cta-title em{ font-style:normal; color: var(--accent-wave); }
  .footer-grid{ display:flex; justify-content: space-between; align-items: flex-start; flex-wrap: wrap; gap: 40px; padding-top: 64px; margin-top: 64px; border-top: 1px solid rgba(238,243,244,0.16); }
  .footer-col h3{ font-family: var(--font-mono); font-size: 0.78rem; color: var(--accent-wave); font-weight: 400; letter-spacing: 0.04em; margin: 0 0 16px; }
  .footer-col ul{ list-style:none; margin:0; padding:0; display:flex; flex-direction:column; gap:10px; }
  .footer-col a{ text-decoration:none; color: rgba(238,243,244,0.82); font-size: 0.92rem; }
  .footer-col a:hover{ color: var(--text-on-dark); }
  .footer-bottom{ margin-top: 56px; padding-top: 24px; border-top: 1px solid rgba(238,243,244,0.16); display:flex; justify-content: space-between; flex-wrap: wrap; gap: 12px; font-family: var(--font-mono); font-size: 0.74rem; color: rgba(238,243,244,0.5); }

  @media (max-width: 900px){ nav.primary{ display:none; } }
  @media (max-width: 760px){
    .process-line{ grid-template-columns: 1fr; gap: 36px; }
    .process-line::before{ display:none; }
    .footer-grid{ flex-direction: column; }
    .section-head{ flex-direction: column; align-items: flex-start; }
    .header-row{ flex-wrap: wrap; }
  }
  @media (prefers-reduced-motion: reduce){ html{ scroll-behavior:auto; } }

  /* ---------- Sub-page intro (work / contact) ---------- */
  .page-intro{ padding: 64px 0 88px; }
  .page-intro .eyebrow{ margin-bottom: 16px; }
  .page-intro h1{
    font-family: var(--font-display); font-weight: 700;
    font-size: clamp(2rem, 4.4vw, 3.2rem); line-height: 1.05; letter-spacing: -0.02em;
    margin: 0 0 20px; max-width: 700px;
  }
  .page-intro p.lead{ color: var(--ink-soft); font-size: 1.05rem; max-width: 560px; margin: 0; }

  /* ---------- Work filters ---------- */
  .filter-row{ display:flex; gap:10px; flex-wrap:wrap; margin: 36px 0 48px; }
  .filter-btn{
    font-family: var(--font-mono); font-size: 0.78rem; letter-spacing: 0.02em;
    padding: 9px 16px; border-radius: 999px; border: 1px solid var(--line-strong);
    background: none; color: var(--ink-soft); cursor: pointer; transition: all .15s ease;
  }
  .filter-btn:hover{ color: var(--ink); border-color: var(--accent-wave); }
  .filter-btn.active{ background: var(--ink); border-color: var(--ink); color: var(--paper); }

  /* ---------- Portfolio grid (full page) ---------- */
  .portfolio-grid{
    display:grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 24px;
    padding-bottom: 96px;
  }
  .portfolio-card{
    border: 1px solid var(--line); border-radius: 16px; overflow:hidden;
    background: var(--card-bg); transition: transform .18s ease, border-color .18s ease;
  }
  .portfolio-card:hover{ transform: translateY(-4px); border-color: var(--accent-wave); }
  .portfolio-card .thumb{ height: 150px; position:relative; }
  .portfolio-card .thumb svg{ width:100%; height:100%; display:block; }
  .portfolio-card .pbody{ padding: 22px 24px 26px; }
  .portfolio-card .ptag{ font-family: var(--font-mono); font-size: 0.7rem; color: var(--accent-wave); display:block; margin-bottom:10px; }
  .portfolio-card .ptitle{ font-family: var(--font-display); font-weight:600; font-size: 1.1rem; margin:0 0 6px; }
  .portfolio-card .pindustry{ color: var(--ink-soft); font-size: 0.8rem; margin: 0 0 14px; font-family: var(--font-mono); }
  .portfolio-card .pdesc{ color: var(--ink-soft); font-size: 0.9rem; margin: 0 0 16px; }
  .portfolio-card .pstat{
    display:inline-flex; align-items:center; gap:8px;
    font-family: var(--font-mono); font-size: 0.8rem; color: var(--accent-signal);
    border-top: 1px solid var(--line); padding-top: 14px; width: 100%;
  }
  html[data-theme="dark"] .portfolio-card .pstat{ color: var(--accent-wave); }

  .cta-band{ padding: 88px 0; text-align:center; background: var(--paper-deep); }
  .cta-band .section-label{ justify-content:center; text-align:center; }
  .cta-band h2{
    font-family: var(--font-display); font-weight:700; font-size: clamp(1.7rem,3.6vw,2.6rem);
    letter-spacing:-0.02em; margin: 0 auto 32px; max-width: 560px;
  }
  .cta-band h2 em{ font-style:normal; color: var(--accent-wave); }

  /* ---------- Contact page ---------- */
  .contact-layout{
    display:grid; grid-template-columns: 1.5fr 1fr; gap: 56px; padding-bottom: 96px; align-items:start;
  }
  @media (max-width: 860px){ .contact-layout{ grid-template-columns: 1fr; } }

  .contact-form{ display:flex; flex-direction:column; gap: 22px; }
  .field{ display:flex; flex-direction:column; gap: 8px; }
  .field label{ font-family: var(--font-mono); font-size: 0.78rem; color: var(--ink-soft); letter-spacing:0.02em; }
  .field input, .field select, .field textarea{
    font-family: var(--font-body); font-size: 0.95rem; color: var(--ink);
    background: var(--card-bg); border: 1px solid var(--line-strong); border-radius: 10px;
    padding: 12px 14px; outline: none; transition: border-color .15s ease;
  }
  .field input:focus, .field select:focus, .field textarea:focus{ border-color: var(--accent-wave); }
  .field textarea{ resize: vertical; min-height: 130px; font-family: var(--font-body); }
  .field-row{ display:grid; grid-template-columns: 1fr 1fr; gap: 18px; }
  @media (max-width: 560px){ .field-row{ grid-template-columns: 1fr; } }

  .form-submit{
    font-family: var(--font-mono); font-size: 0.86rem; padding: 14px 26px; border-radius: 999px;
    border: 1px solid var(--accent-signal); background: var(--accent-signal); color: white;
    cursor: pointer; transition: background .18s ease, border-color .18s ease; align-self:flex-start;
  }
  .form-submit:hover{ background: var(--accent-signal-deep); border-color: var(--accent-signal-deep); }
  .form-submit:disabled{ opacity: 0.6; cursor: default; }

  .form-banner{
    display:none; border-radius: 12px; padding: 16px 18px; font-size: 0.9rem;
  }
  .form-banner.show{ display:block; }
  .form-banner.success{ background: rgba(19,166,190,0.12); border: 1px solid var(--accent-wave); color: var(--ink); }
  .form-banner.error{ background: rgba(214,60,60,0.1); border: 1px solid #D63C3C; color: var(--ink); }
  .form-banner strong{ display:block; margin-bottom: 4px; font-family: var(--font-display); }
  .honey{ position:absolute; left:-9999px; opacity:0; }

  .contact-side{
    border: 1px solid var(--line); border-radius: 16px; padding: 28px 26px; background: var(--card-bg);
  }
  .contact-side .section-label{ margin-bottom: 20px; }
  .side-row{ display:flex; flex-direction:column; gap: 4px; padding: 16px 0; border-top: 1px solid var(--line); }
  .side-row:first-of-type{ border-top:none; padding-top:0; }
  .side-row .side-key{ font-family: var(--font-mono); font-size: 0.72rem; color: var(--ink-soft); letter-spacing:0.03em; }
  .side-row .side-val{ font-size: 0.98rem; }
  .side-row a{ text-decoration:none; color: var(--accent-signal); }
  html[data-theme="dark"] .side-row a{ color: var(--accent-wave); }

  /* ---------- Mobile navigation ---------- */
  .hamburger-btn{
    display:none; width:34px; height:34px; border-radius:50%;
    border:1px solid var(--line-strong); background:none; align-items:center; justify-content:center;
    cursor:pointer; color:var(--ink); flex-shrink:0; padding:0;
  }
  .hamburger-btn svg{ width:18px; height:18px; }
  .hamburger-btn .close-icon{ display:none; }
  .hamburger-btn.open .menu-icon{ display:none; }
  .hamburger-btn.open .close-icon{ display:block; }

  .mobile-menu{ display:none; flex-direction:column; background:var(--paper); border-bottom:1px solid var(--line); padding: 4px 28px 12px; }
  .mobile-menu.open{ display:flex; }
  .mobile-menu a{ padding:15px 2px; font-family:var(--font-mono); font-size:0.95rem; color:var(--ink); text-decoration:none; border-bottom:1px solid var(--line); }
  .mobile-menu a:last-child{ border-bottom:none; }

  @media (max-width:900px){ .hamburger-btn{ display:flex; } }
  @media (min-width:901px){ .mobile-menu{ display:none !important; } }

  @media (max-width:600px){
    .lang-btn{ padding:11px 14px; }
    .icon-btn{ width:40px; height:40px; }
    .hamburger-btn{ width:40px; height:40px; }
    .filter-btn{ padding:12px 18px; }
    .preset{ padding:11px 16px; }
    .header-controls .btn.primary{ padding:11px 16px; font-size:0.78rem; }
  }
  @media (max-width:420px){
    .header-controls{ flex-wrap:wrap; justify-content:flex-end; row-gap:10px; }
    .header-row{ row-gap: 12px; }
  }

  /* ============================================================
     Performance & polish layer
     ============================================================ */

  /* Scroll-reveal animation (JS adds .revealed) */
  .reveal{ opacity:0; transform: translateY(22px); transition: opacity .6s ease, transform .6s cubic-bezier(.2,.65,.3,1); will-change: opacity, transform; }
  .reveal.revealed{ opacity:1; transform:none; }
  .reveal-delay-1{ transition-delay: .08s; }
  .reveal-delay-2{ transition-delay: .16s; }
  .reveal-delay-3{ transition-delay: .24s; }

  @media (prefers-reduced-motion: reduce){
    .reveal{ opacity:1 !important; transform:none !important; transition:none !important; }
    *{ animation: none !important; }
  }

  /* Image loading polish: subtle fade-in once loaded */
  .thumb img, .work-thumb img, .shot img, .shot2 img{
    opacity:0; transition: opacity .45s ease;
  }
  .thumb img.loaded, .work-thumb img.loaded, .shot img.loaded, .shot2 img.loaded{ opacity:1; }
  .thumb, .work-thumb{ background: var(--paper-deep); }

  /* Card hover: lift + image zoom */
  .portfolio-card, .work-card{ overflow:hidden; }
  .portfolio-card .thumb, .work-card .work-thumb{ overflow:hidden; }
  .portfolio-card .thumb img, .work-card .work-thumb img{ transition: opacity .45s ease, transform .5s cubic-bezier(.2,.65,.3,1); }
  .portfolio-card:hover .thumb img, .work-card:hover .work-thumb img{ transform: scale(1.04); }
  .portfolio-card:hover, .work-card:hover{ box-shadow: 0 18px 40px -18px rgba(11,36,54,0.28); }
  html[data-theme="dark"] .portfolio-card:hover, html[data-theme="dark"] .work-card:hover{ box-shadow: 0 18px 40px -14px rgba(0,0,0,0.55); }

  /* Button micro-interaction */
  .btn, .form-submit, .filter-btn{ transition: all .18s ease, transform .12s ease; }
  .btn:active, .form-submit:active, .filter-btn:active{ transform: scale(0.97); }

  /* Smooth theme transition */
  header.site, footer.site, .service-card, .portfolio-card, .work-card, .contact-side,
  .field input, .field select, .field textarea, .process, .stats-band, .cta-band{
    transition: background-color .25s ease, border-color .25s ease, color .25s ease;
  }

  /* Focus rings on interactive elements (a11y) */
  .filter-btn:focus-visible, .lang-btn:focus-visible{ outline:2px solid var(--accent-wave); outline-offset:2px; }

  /* Sticky header shadow when scrolled (JS adds .scrolled) */
  header.site{ transition: box-shadow .25s ease, background-color .25s ease; }
  header.site.scrolled{ box-shadow: 0 6px 24px -12px rgba(11,36,54,0.25); }
  html[data-theme="dark"] header.site.scrolled{ box-shadow: 0 6px 24px -10px rgba(0,0,0,0.6); }