/* ═══════════════════════════════════════════════════════════
   TSUNAMI SH.P.K — Premium Design System v2
   Informed by: ui-ux-pro-max (Modern Dark Cinema + Swiss
   Modernism 2.0), design-system (token architecture),
   brand (visual identity), ui-styling (component polish)
   ═══════════════════════════════════════════════════════════ */

/* ─── Reset ─── */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;text-size-adjust:100%}
html,body{height:100%;overflow-x:hidden}
img,svg{display:block;max-width:100%}
a{color:inherit;text-decoration:none}
button{font:inherit;cursor:pointer;border:none;background:none;color:inherit}
ul,ol{list-style:none}
input,select,textarea{font:inherit}

/* ─── Design Tokens ─── */
/* Source: ui-ux-pro-max "Modern Dark Cinema" + "B2B Service" color palette
   + design-system primitive-tokens spacing/radius architecture */
:root{
  /* Palette — refined from skill "trust navy + premium gold" recommendation */
  --c-bg:#050a15;
  --c-s1:#0a1424;
  --c-s2:#0f1d35;
  --c-s3:#162748;
  --c-navy:#022D65;
  --c-cyan:#06B6D4;
  --c-teal:#14b8a6;
  --c-amber:#f59e0b;
  --c-white:#ffffff;

  /* Text — enhanced contrast per UX accessibility guidelines (4.5:1 min) */
  --t1:rgba(255,255,255,.96);
  --t2:rgba(255,255,255,.64);
  --t3:rgba(255,255,255,.40);

  /* Borders — from design-system token architecture */
  --b1:rgba(255,255,255,.06);
  --b2:rgba(255,255,255,.10);
  --b3:rgba(255,255,255,.18);
  --b4:rgba(255,255,255,.28);

  /* Accent opacity variants */
  --c-cyan-06:rgba(6,182,212,.06);
  --c-cyan-10:rgba(6,182,212,.10);
  --c-cyan-15:rgba(6,182,212,.15);
  --c-cyan-25:rgba(6,182,212,.25);
  --c-cyan-40:rgba(6,182,212,.40);
  --c-amber-06:rgba(245,158,11,.06);
  --c-amber-10:rgba(245,158,11,.10);
  --c-amber-20:rgba(245,158,11,.20);
  --c-navy-20:rgba(2,45,101,.20);

  /* Typography — "Premium Sans" from ui-ux-pro-max: Inter */
  --font:'Inter',ui-sans-serif,system-ui,-apple-system,'Segoe UI',Roboto,'Helvetica Neue',Arial,sans-serif;
  --fs-xs:0.8125rem;
  --fs-sm:0.875rem;
  --fs-base:1rem;
  --fs-md:1.125rem;
  --fs-lg:1.25rem;
  --fs-xl:1.5rem;
  --fs-2xl:clamp(1.5rem,1.2rem + 1.2vw,2rem);
  --fs-3xl:clamp(1.875rem,1.4rem + 2vw,2.75rem);
  --fs-4xl:clamp(2.25rem,1.6rem + 2.8vw,3.5rem);
  --fs-5xl:clamp(2.75rem,1.8rem + 3.5vw,4.25rem);

  /* Radius — from design-system token scale */
  --r-xs:6px;
  --r-sm:8px;
  --r-md:12px;
  --r-lg:16px;
  --r-xl:20px;
  --r-2xl:28px;
  --r-full:999px;

  /* Shadows — layered for depth (cinema style) */
  --shadow-sm:0 1px 3px rgba(0,0,0,.15),0 1px 2px rgba(0,0,0,.1);
  --shadow-md:0 4px 16px rgba(0,0,0,.2),0 2px 4px rgba(0,0,0,.1);
  --shadow-lg:0 12px 40px rgba(0,0,0,.3),0 4px 12px rgba(0,0,0,.15);
  --shadow-xl:0 24px 60px rgba(0,0,0,.35),0 8px 20px rgba(0,0,0,.2);
  --shadow-glow:0 0 40px rgba(6,182,212,.08);

  /* Transitions — cinema-quality easing */
  --ease:cubic-bezier(.16,1,.3,1);
  --ease-out:cubic-bezier(0,.55,.45,1);
  --dur:0.2s;
  --dur-slow:0.4s;

  /* Layout */
  --max:1200px;
  --max-sm:900px;
  --max-xs:680px;
}

/* ─── Base ─── */
body{
  font-family:var(--font);
  color:var(--t1);
  background:var(--c-bg);
  font-size:var(--fs-base);
  line-height:1.7;
  font-weight:400;
  letter-spacing:-.005em;
  position:relative;
}

::selection{background:rgba(6,182,212,.25);color:var(--c-white)}

/* ─── Background — Cinema ambient light ─── */
.bg{
  position:fixed;inset:0;pointer-events:none;z-index:0;
  background:
    radial-gradient(ellipse 900px 500px at 10% 5%,rgba(6,182,212,.08),transparent 50%),
    radial-gradient(ellipse 600px 400px at 92% 88%,rgba(245,158,11,.05),transparent 45%),
    radial-gradient(ellipse 1200px 700px at 50% 45%,rgba(2,45,101,.18),transparent 55%),
    var(--c-bg);
}
.grain{
  position:fixed;inset:0;pointer-events:none;z-index:1;
  opacity:.07;mix-blend-mode:overlay;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='200' height='200'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.8' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='200' height='200' filter='url(%23n)' opacity='.12'/%3E%3C/svg%3E");
}

/* ─── Layout — Swiss grid discipline ─── */
.container{width:100%;max-width:var(--max);margin:0 auto;padding:0 40px}
.section{padding:112px 0;position:relative;z-index:2}

/* Section headers — strong hierarchy */
.section-header{max-width:720px;margin-bottom:72px}
.section-label{
  display:inline-flex;align-items:center;gap:8px;
  font-size:var(--fs-xs);font-weight:600;
  letter-spacing:.14em;text-transform:uppercase;
  color:var(--c-cyan);margin-bottom:20px;
}
.section-label::before{
  content:'';width:20px;height:1px;background:var(--c-cyan);
}
.section-header h2{
  font-size:var(--fs-4xl);font-weight:700;
  letter-spacing:-.03em;line-height:1.08;margin-bottom:20px;
}
.section-header p{
  font-size:var(--fs-md);color:var(--t2);line-height:1.75;max-width:60ch;
}

/* Section alternate (subtle depth variation) */
.section-alt{background:rgba(255,255,255,.015)}
.section-alt::before{
  content:'';position:absolute;inset:0;
  border-top:1px solid var(--b1);border-bottom:1px solid var(--b1);
  pointer-events:none;
}

/* ─── Text Utilities ─── */
.text-grad{
  background:linear-gradient(135deg,var(--c-cyan),var(--c-teal));
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.text-grad-wide{
  background:linear-gradient(90deg,var(--c-cyan),var(--c-teal),var(--c-amber));
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.text-muted{color:var(--t2)}
.text-dim{color:var(--t3)}

/* ─── Navigation — premium fixed bar ─── */
.nav{
  position:fixed;top:0;left:0;right:0;z-index:100;
  border-bottom:1px solid transparent;
  background:rgba(5,10,21,.60);
  backdrop-filter:blur(24px) saturate(1.2);-webkit-backdrop-filter:blur(24px) saturate(1.2);
  transition:all .35s var(--ease);
}
.nav.scrolled{background:rgba(5,10,21,.92);border-color:var(--b1)}
.nav-inner{
  max-width:var(--max);margin:0 auto;padding:0 40px;
  display:flex;align-items:center;justify-content:space-between;
  height:auto;min-height:72px;padding-top:12px;padding-bottom:12px;gap:24px;
}
.nav-brand{display:flex;align-items:center;gap:12px;flex-shrink:0}
.nav-brand img{
  width:114px;height:114px;border-radius:var(--r-lg);object-fit:contain;
  image-rendering:auto;
}
.nav-brand-text{font-weight:700;font-size:var(--fs-base);letter-spacing:.01em;line-height:1.2}
.nav-brand-text small{display:block;font-size:11px;font-weight:500;color:var(--t3);letter-spacing:.06em;text-transform:uppercase;margin-top:2px}
.nav-menu{display:flex;align-items:center;gap:36px}
.nav-link{
  font-size:var(--fs-sm);font-weight:500;color:var(--t2);
  letter-spacing:.005em;transition:color var(--dur) var(--ease);
  position:relative;padding:4px 0;
}
.nav-link:hover,.nav-link:focus-visible{color:var(--t1)}
.nav-link::after{
  content:'';position:absolute;bottom:-2px;left:0;width:0;height:1.5px;
  background:var(--c-cyan);border-radius:1px;transition:width .3s var(--ease);
}
.nav-link:hover::after{width:100%}
.nav-actions{display:flex;align-items:center;gap:16px;flex-shrink:0}

/* Language switcher */
.lang-sw{
  display:flex;gap:2px;padding:3px;
  border:1px solid var(--b2);border-radius:var(--r-full);background:rgba(0,0,0,.3);
}
.lang-btn{
  padding:6px 10px;border-radius:var(--r-full);
  font-size:11px;font-weight:600;letter-spacing:.05em;
  color:var(--t3);transition:all var(--dur) var(--ease);
}
.lang-btn.active{color:var(--t1);background:rgba(255,255,255,.10)}
.lang-btn:hover:not(.active){color:var(--t2)}

/* Nav toggle (mobile) */
.nav-toggle{display:none;flex-direction:column;gap:5px;padding:8px;z-index:110}
.nav-toggle span{display:block;width:20px;height:1.5px;background:var(--t1);border-radius:1px;transition:all .3s var(--ease)}
.nav-toggle.open span:nth-child(1){transform:rotate(45deg) translate(4.5px,4.5px)}
.nav-toggle.open span:nth-child(2){opacity:0}
.nav-toggle.open span:nth-child(3){transform:rotate(-45deg) translate(4.5px,-4.5px)}

/* ─── Buttons — refined system ─── */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  font-weight:600;letter-spacing:.005em;white-space:nowrap;
  border-radius:var(--r-md);border:1px solid var(--b3);
  padding:12px 22px;font-size:var(--fs-sm);
  color:var(--t1);background:rgba(255,255,255,.05);
  transition:all var(--dur) var(--ease);position:relative;
}
.btn:hover{background:rgba(255,255,255,.08);border-color:var(--b4);transform:translateY(-1px)}
.btn:active{transform:translateY(0)}
.btn-primary{
  background:linear-gradient(135deg,rgba(6,182,212,.12),rgba(2,45,101,.18),rgba(6,182,212,.06));
  border-color:var(--c-cyan-25);
}
.btn-primary:hover{
  border-color:var(--c-cyan-40);
  box-shadow:0 0 24px rgba(6,182,212,.10),var(--shadow-md);
}
.btn-outline{background:transparent;border-color:var(--b3)}
.btn-outline:hover{background:rgba(255,255,255,.04);border-color:var(--b4)}
.btn-sm{padding:8px 16px;font-size:var(--fs-xs);border-radius:var(--r-sm)}
.btn-lg{padding:16px 32px;font-size:var(--fs-base)}
.btn-icon{width:40px;height:40px;padding:0;border-radius:var(--r-sm)}

/* ─── Glass Card — premium surface ─── */
.glass{
  border:1px solid var(--b2);border-radius:var(--r-2xl);
  background:linear-gradient(180deg,rgba(255,255,255,.05),rgba(255,255,255,.015));
  backdrop-filter:blur(16px) saturate(1.1);-webkit-backdrop-filter:blur(16px) saturate(1.1);
  box-shadow:var(--shadow-lg);overflow:hidden;position:relative;
}
.glass::before{
  content:'';position:absolute;inset:-1px;border-radius:inherit;
  background:radial-gradient(500px 200px at 15% 5%,rgba(255,255,255,.05),transparent 45%);
  pointer-events:none;
}

/* ─── Image Placeholder — premium intentional ─── */
.img-placeholder{
  border-radius:var(--r-xl);
  border:1px solid var(--b2);
  background:
    linear-gradient(135deg,rgba(6,182,212,.04),rgba(2,45,101,.08),rgba(245,158,11,.03));
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:12px;
  color:var(--t3);font-size:var(--fs-xs);font-weight:500;letter-spacing:.02em;
  min-height:240px;padding:40px;text-align:center;
  position:relative;overflow:hidden;
}
.img-placeholder svg{opacity:.3}
.img-placeholder::before{
  content:'';position:absolute;inset:0;
  background:radial-gradient(circle at 35% 40%,rgba(6,182,212,.05),transparent 55%);
  pointer-events:none;
}
.img-placeholder.lg{min-height:320px}
.img-placeholder.hero-img{min-height:420px;border-radius:var(--r-2xl)}

/* ─── Badge ─── */
.badge{
  display:inline-flex;align-items:center;gap:8px;
  padding:8px 16px;border-radius:var(--r-full);
  border:1px solid var(--b2);background:rgba(0,0,0,.3);
  font-size:var(--fs-xs);font-weight:600;letter-spacing:.03em;color:var(--t2);
}
.pulse-dot{
  width:7px;height:7px;border-radius:var(--r-full);
  background:var(--c-cyan);
  box-shadow:0 0 0 3px rgba(6,182,212,.12);
  position:relative;flex-shrink:0;
}
.pulse-dot::after{
  content:'';position:absolute;inset:-5px;border-radius:var(--r-full);
  border:1px solid rgba(6,182,212,.18);
  animation:pulse 3s ease-in-out infinite;
}
@keyframes pulse{
  0%{transform:scale(.7);opacity:0}
  35%{opacity:1}
  100%{transform:scale(1.3);opacity:0}
}

/* ─── Divider ─── */
.divider{height:1px;background:var(--b1)}

/* ─── Footer — comprehensive ─── */
.footer{
  position:relative;z-index:2;
  border-top:1px solid var(--b1);
  padding:72px 0 0;
  background:rgba(0,0,0,.15);
}
.footer-grid{
  display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:48px;
  padding-bottom:56px;
}
.footer-col h4{
  font-size:var(--fs-xs);font-weight:600;letter-spacing:.1em;
  text-transform:uppercase;color:var(--t3);margin-bottom:20px;
}
.footer-col p{font-size:var(--fs-sm);color:var(--t2);line-height:1.7;margin-bottom:12px}
.footer-col a{
  display:block;font-size:var(--fs-sm);color:var(--t2);
  padding:5px 0;transition:color var(--dur) var(--ease);
}
.footer-col a:hover{color:var(--t1)}
.footer-brand{display:flex;align-items:center;gap:12px;margin-bottom:16px}
.footer-brand img{width:48px;height:48px;border-radius:var(--r-md);object-fit:cover}
.footer-brand span{font-weight:700;font-size:var(--fs-base);letter-spacing:.01em}
.footer-bottom{
  border-top:1px solid var(--b1);padding:24px 0;
  display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:16px;
  font-size:var(--fs-xs);color:var(--t3);
}
.footer-bottom a{color:var(--t3);transition:color var(--dur) var(--ease)}
.footer-bottom a:hover{color:var(--t2)}
.footer-legal{display:flex;gap:24px;flex-wrap:wrap}

/* ─── Responsive ─── */
@media(max-width:960px){
  .container{padding:0 28px}
  .section{padding:80px 0}
  .section-header{margin-bottom:56px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media(max-width:768px){
  .nav-brand img{width:72px;height:72px;border-radius:var(--r-md)}
  .nav-inner{padding:0 20px;min-height:64px}
  .nav-menu{
    position:fixed;inset:0;z-index:105;
    background:rgba(5,10,21,.98);
    backdrop-filter:blur(24px);-webkit-backdrop-filter:blur(24px);
    flex-direction:column;justify-content:center;align-items:center;gap:28px;
    opacity:0;pointer-events:none;transition:opacity .35s var(--ease);
  }
  .nav-menu.open{opacity:1;pointer-events:all}
  .nav-menu .nav-link{font-size:var(--fs-xl);font-weight:600}
  .nav-toggle{display:flex}
  .nav-actions .btn{display:none}
  .container{padding:0 20px}
  .section{padding:64px 0}
  .section-header{margin-bottom:40px}
  .section-header h2{font-size:clamp(1.5rem,1rem + 2.2vw,2.25rem)}
  .glass{
    backdrop-filter:blur(10px) saturate(1.05);
    -webkit-backdrop-filter:blur(10px) saturate(1.05);
  }
  .footer-grid{grid-template-columns:1fr}
  .footer{padding:48px 0 0}
}
@media(max-width:540px){
  .container{padding:0 16px}
  .nav-inner{padding:0 16px}
  .btn-lg{padding:14px 24px;font-size:var(--fs-sm)}
  .section{padding:52px 0}
}
@media(prefers-reduced-motion:reduce){
  *{animation:none!important;transition-duration:0s!important;scroll-behavior:auto!important}
}

/* ─── Print ─── */
@media print{
  .bg,.grain,.nav{display:none}
  body{background:#fff;color:#111;font-size:11pt}
  .section{padding:24px 0}
  a[href]::after{content:" (" attr(href) ")";font-size:.8em;color:#666}
}