/* ============================================================
   TYUMEN TIME — Aura Design System v2.0
   Контракт: AURADESIGN.md
   ============================================================ */

:root {
  /* Color tokens */
  --bg-start: #0f0c29;
  --bg-mid: #302b63;
  --bg-end: #24243e;
  --primary: #74b9ff;
  --primary-hover: #a4c8ff;
  --accent-warn: #e74c3c;
  --on-primary: #0a0a1a;
  --on-background: #ffffff;

  --surface-lowest: rgba(255,255,255,0.04);
  --surface-low: rgba(255,255,255,0.06);
  --surface-mid: rgba(255,255,255,0.10);
  --surface-high: rgba(255,255,255,0.18);
  --surface-overlay: rgba(15,12,41,0.98);
  --surface-header: rgba(0,0,0,0.45);

  --outline: rgba(255,255,255,0.09);
  --outline-strong: rgba(255,255,255,0.22);
  --link-border: rgba(116,185,255,0.3);

  --text-main: #ffffff;
  --text-muted: rgba(255,255,255,0.72);
  --text-subtle: rgba(255,255,255,0.62);
  --text-footer: rgba(255,255,255,0.35);

  /* Spacing */
  --gap-base: 8px;
  --card-pad: 55px 70px 42px;
  --card-pad-mobile: 30px 16px 26px;

  /* Radii */
  --r-card: 28px;
  --r-card-mobile: 18px;
  --r-button: 30px;
  --r-pill: 50px;
  --r-chip: 20px;

  /* Shadows */
  --shadow-card: 0 24px 70px rgba(0,0,0,0.28);
  --shadow-hover: 0 10px 25px rgba(0,0,0,0.04);
  --shadow-menu: -20px 0 60px rgba(0,0,0,0.5);

  /* Motion */
  --ease-spring: cubic-bezier(0.34, 1.56, 0.64, 1);
  --ease-base: 0.25s var(--ease-spring);
  --ease-fast: 0.2s ease;
}

/* ===== Reset ===== */
*{box-sizing:border-box;margin:0;padding:0}
html,body{width:100%;min-height:100%;background:linear-gradient(135deg,var(--bg-start) 0%,var(--bg-mid) 50%,var(--bg-end) 100%);font-family:'Manrope',-apple-system,BlinkMacSystemFont,'Segoe UI',sans-serif;color:var(--on-background);-webkit-tap-highlight-color:transparent;-webkit-font-smoothing:antialiased}
a{color:var(--primary);text-decoration:none}
button{font-family:inherit}

/* ===== Header ===== */
header{position:fixed;top:0;left:0;right:0;z-index:200;display:flex;justify-content:space-between;align-items:center;padding:12px 20px;background:var(--surface-header);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);border-bottom:1px solid rgba(255,255,255,0.08);gap:10px}
h1{font-size:1.3rem;font-weight:700;letter-spacing:-0.02em;white-space:nowrap}

/* Desktop nav */
.site-nav{display:flex;align-items:center;gap:2px;flex-shrink:0}
.site-nav a{color:rgba(255,255,255,0.6);text-decoration:none;padding:5px 10px;border-radius:16px;font-size:0.82rem;font-weight:500;transition:all var(--ease-fast);white-space:nowrap}
.site-nav a:hover{color:#fff;background:rgba(255,255,255,0.08)}
.site-nav a.active{color:#fff;background:rgba(255,255,255,0.12)}

/* Burger */
.burger{display:none;background:none;border:none;color:#fff;cursor:pointer;padding:6px;flex-shrink:0}
.burger svg{width:24px;height:24px;display:block}

/* Header buttons */
.fullscreen-btn{background:rgba(255,255,255,0.10);color:#fff;border:1px solid var(--outline-strong);padding:8px 16px;border-radius:var(--r-button);cursor:pointer;font-size:0.82rem;font-weight:500;transition:all var(--ease-base);display:flex;align-items:center;gap:6px;white-space:nowrap}
.fullscreen-btn:hover{background:rgba(255,255,255,0.18);transform:translateY(-1px)}
.fullscreen-btn svg{width:16px;height:16px}
.back-link{color:rgba(255,255,255,0.7);text-decoration:none;padding:4px 12px;border:1px solid rgba(255,255,255,0.15);border-radius:20px;font-size:0.82rem;font-weight:500;transition:all var(--ease-fast);white-space:nowrap}
.back-link:hover{background:rgba(255,255,255,0.10);color:#fff}
.header-links{display:flex;align-items:center;gap:8px}

/* Mobile nav overlay */
.site-nav-mobile{display:none}
.nav-overlay{display:none;position:fixed;top:0;left:0;right:0;bottom:0;background:rgba(0,0,0,0.6);z-index:190}

/* ===== Main / Clock ===== */
main{display:flex;flex-direction:column;align-items:center;justify-content:center;min-height:100vh;padding:110px 20px 70px}
.clock-view{display:none;width:100%;max-width:90vw;justify-content:center;align-items:center}
.clock-view.active{display:flex!important}
.time-widget{background:var(--surface-low);backdrop-filter:blur(22px);-webkit-backdrop-filter:blur(22px);border:1px solid var(--outline);border-radius:var(--r-card);padding:var(--card-pad);text-align:center;box-shadow:var(--shadow-card);width:100%;max-width:90vw;display:flex;flex-direction:column;align-items:center;transition:transform var(--ease-base)}
.clock-widget{padding:40px 30px 30px}
.time-display{font-size:clamp(3.2rem,9.5vw,7.5rem);font-weight:800;color:#fff;font-variant-numeric:tabular-nums;letter-spacing:-0.04em;text-shadow:0 4px 28px rgba(0,0,0,0.35);line-height:1.05}
.timezone-info{margin-top:22px;color:var(--text-subtle);font-size:0.95rem;line-height:1.75;text-align:center}
.timezone-info strong{color:#fff;font-weight:600}
.timezone-fs{display:none;text-align:center}
#analog-clock{width:min(80vw,400px);height:min(80vw,400px);display:block;margin:0 auto}

/* Mode switch button */
.mode-switch-btn{margin-top:24px;background:rgba(255,255,255,0.10);color:#fff;border:1px solid var(--outline-strong);padding:14px 32px;border-radius:var(--r-button);cursor:pointer;font-size:0.95rem;font-weight:500;transition:all var(--ease-base);display:flex;align-items:center;gap:10px;justify-content:center;min-width:200px;box-shadow:0 8px 30px rgba(0,0,0,0.20);user-select:none}
.mode-switch-btn:hover{background:rgba(255,255,255,0.18);transform:translateY(-2px)}
.mode-switch-btn:active{transform:translateY(0);background:rgba(255,255,255,0.25)}
.mode-switch-btn svg{width:20px;height:20px;flex-shrink:0}

footer{text-align:center;padding:22px;color:var(--text-footer);font-size:0.82rem}
.dblclick-hint{display:none;position:fixed;bottom:22px;left:50%;transform:translateX(-50%);color:rgba(255,255,255,0.32);font-size:0.82rem;z-index:150;pointer-events:none}

/* ===== Content pages ===== */
main.content-page{padding-top:110px;padding-bottom:60px;max-width:850px;margin:0 auto;width:90vw}
main.content-page article{background:var(--surface-lowest);border-radius:16px;padding:30px;backdrop-filter:blur(10px);border:1px solid var(--outline)}
main.content-page article h1{font-size:1.8rem;font-weight:700;letter-spacing:-0.02em;margin-bottom:16px}
main.content-page article h2{font-size:1.3rem;font-weight:600;margin:24px 0 10px;padding-bottom:6px;border-bottom:1px solid rgba(255,255,255,0.08)}
main.content-page article h3{font-size:1.1rem;font-weight:600;margin:18px 0 8px}
main.content-page article p{color:var(--text-muted);line-height:1.8;margin:8px 0;font-size:0.95rem}
main.content-page article ul,main.content-page article ol{padding-left:20px;color:var(--text-muted);margin:10px 0}
main.content-page article li{margin:5px 0;line-height:1.7}
main.content-page article a{color:var(--primary);text-decoration:none;border-bottom:1px solid var(--link-border);transition:border-color var(--ease-fast)}
main.content-page article a:hover{border-bottom-color:var(--primary)}
main.content-page article table{width:100%;border-collapse:collapse;margin:16px 0}
main.content-page article th,main.content-page article td{padding:10px 14px;border:1px solid var(--outline);text-align:left;color:var(--text-muted);font-size:0.9rem}
main.content-page article th{background:rgba(255,255,255,0.06);font-weight:600;color:#fff}
main.content-page article code{background:rgba(255,255,255,0.08);padding:2px 6px;border-radius:4px;font-size:0.88em;font-family:'SF Mono',Consolas,monospace}

/* ===== Aura v2 — контентные страницы СТАРОЙ структуры (content-band) ===== */
main.content-band{max-width:850px!important;width:100%!important;margin:0 auto!important;padding:110px 20px 60px!important;display:block!important;box-sizing:border-box!important}
main#content.content-band{max-width:850px!important;width:100%!important;margin:0 auto!important;padding:110px 20px 60px!important;display:block!important;box-sizing:border-box!important}
main.content-band > article.content-inner,main#content > article.content-inner{max-width:810px!important;width:100%!important;margin:0 auto!important;padding:30px!important;background:var(--surface-lowest,rgba(255,255,255,0.04))!important;border-radius:16px!important;border:1px solid var(--outline,rgba(255,255,255,0.08))!important;backdrop-filter:blur(10px)!important;box-sizing:border-box!important}
main.content-band h1,main#content.content-band h1{font-size:1.8rem!important;font-weight:700!important;letter-spacing:-0.02em!important;margin:0 0 16px!important;color:#fff!important}
main.content-band h2,main#content.content-band h2{font-size:1.3rem!important;font-weight:600!important;margin:24px 0 10px!important;padding-bottom:6px!important;border-bottom:1px solid rgba(255,255,255,0.08)!important;color:#fff!important}
main.content-band h3,main#content.content-band h3{font-size:1.1rem!important;font-weight:600!important;margin:18px 0 8px!important;color:#fff!important}
main.content-band p,main#content.content-band p{color:var(--text-muted,#d4d4e0)!important;line-height:1.8!important;margin:8px 0!important;font-size:0.95rem!important}
main.content-band ul,main.content-band ol,main#content.content-band ul,main#content.content-band ol{padding-left:20px!important;color:var(--text-muted,#d4d4e0)!important;margin:10px 0!important}
main.content-band li,main#content.content-band li{margin:5px 0!important;line-height:1.7!important}
main.content-band a,main#content.content-band a{color:var(--primary,#74b9ff)!important;text-decoration:none!important;border-bottom:1px solid var(--link-border,rgba(116,185,255,0.3))!important}

/* ===== Aura v2 — универсальное правило для <main> без класса (новые Aura-страницы) ===== */
body > main,
body > div > main,
main:not([class]):not([id]){max-width:850px!important;width:100%!important;margin:0 auto!important;padding:110px 20px 60px!important;display:flex!important;flex-direction:column!important;align-items:center!important;box-sizing:border-box!important}
body > main > article,
body > div > main > article,
main:not([class]):not([id]) > article{max-width:810px!important;width:100%!important;padding:30px!important;background:var(--surface-lowest,rgba(255,255,255,0.04))!important;border-radius:16px!important;border:1px solid var(--outline,rgba(255,255,255,0.08))!important;backdrop-filter:blur(10px)!important;box-sizing:border-box!important}
body > main h1,body > div > main h1,main:not([class]):not([id]) h1{font-size:1.8rem!important;font-weight:700!important;letter-spacing:-0.02em!important;margin:0 0 16px!important;color:#fff!important;text-align:left!important}
body > main h2,body > div > main h2,main:not([class]):not([id]) h2{font-size:1.3rem!important;font-weight:600!important;margin:24px 0 10px!important;padding-bottom:6px!important;border-bottom:1px solid rgba(255,255,255,0.08)!important;color:#fff!important;text-align:left!important}
body > main p,body > div > main p,main:not([class]):not([id]) p{color:#d4d4e0!important;line-height:1.8!important;margin:8px 0!important;font-size:0.95rem!important;text-align:left!important}
body > main a,body > div > main a,main:not([class]):not([id]) a{color:#74b9ff!important;text-decoration:none!important;border-bottom:1px solid rgba(116,185,255,0.3)!important}
body > main ul,body > main ol,body > div > main ul,body > div > main ol,main:not([class]):not([id]) ul,main:not([class]):not([id]) ol{padding-left:20px!important;color:#d4d4e0!important;margin:10px 0!important;text-align:left!important}
.contact-form input,.contact-form textarea{width:100%;padding:12px;margin:8px 0;background:rgba(255,255,255,0.06);border:1px solid var(--outline-strong);border-radius:10px;color:#fff;font-size:0.95rem;font-family:inherit;transition:border-color var(--ease-fast)}
.contact-form input:focus,.contact-form textarea:focus{outline:none;border-color:rgba(255,255,255,0.30)}
.contact-form input::placeholder,.contact-form textarea::placeholder{color:rgba(255,255,255,0.4)}
.contact-form button{background:rgba(255,255,255,0.10);color:#fff;border:1px solid var(--outline-strong);padding:12px 28px;border-radius:var(--r-button);cursor:pointer;font-size:0.95rem;font-weight:500;margin-top:8px;transition:all var(--ease-base)}
.contact-form button:hover{background:rgba(255,255,255,0.18);transform:translateY(-1px)}

/* ===== Fullscreen ===== */
html.fs-mode,body.fs-mode{overflow:hidden!important;position:fixed!important;top:0;left:0;right:0;bottom:0;width:100vw;height:100vh;height:100dvh;overscroll-behavior:none}
html.fs-mode header,html.fs-mode footer,html.fs-mode .timezone-info,html.fs-mode .mode-switch-btn,html.fs-mode .fullscreen-btn,html.fs-mode .burger,html.fs-mode .nav-overlay{display:none!important}
html.fs-mode main{height:100dvh!important;width:100vw!important;padding:0!important;margin:0!important;display:flex!important;flex-direction:column!important;justify-content:center!important;align-items:center!important;overflow:hidden!important}
html.fs-mode .clock-view.active{display:flex!important;width:100vw!important;max-width:100vw!important;justify-content:center!important;align-items:center!important;height:100dvh!important}
html.fs-mode .clock-view:not(.active){display:none!important}
html.fs-mode .time-widget{border:none!important;border-radius:0!important;background:transparent!important;box-shadow:none!important;padding:0!important;margin:0!important;width:100vw!important;max-width:none!important;min-height:0!important;display:flex!important;flex-direction:column!important;justify-content:center!important;align-items:center!important;transform:none!important}
html.fs-mode .time-display{font-size:clamp(4rem,22vw,16rem)!important;letter-spacing:-0.05em!important}
html.fs-mode .clock-widget{padding:0!important}
html.fs-mode #analog-clock{width:min(90vw,90vh,700px)!important;height:min(90vw,90vh,700px)!important}
html.fs-mode .timezone-fs{display:block!important;color:rgba(255,255,255,0.65)!important;font-size:clamp(1rem,3.5vw,2.5rem)!important;margin-top:12px!important;font-weight:300!important;letter-spacing:2px!important}
html.fs-mode .dblclick-hint{display:block!important}

/* ===== Responsive ===== */
@media(max-width:900px){
  .site-nav{display:none}
  .burger{display:block}
  .site-nav-mobile{display:none;position:fixed;top:0;right:0;width:270px;height:100vh;flex-direction:column;background:var(--surface-overlay);backdrop-filter:blur(20px);padding:70px 20px 20px;z-index:210;gap:4px;align-items:stretch;border-left:1px solid rgba(255,255,255,0.08);overflow-y:auto;box-shadow:var(--shadow-menu)}
  .site-nav-mobile.open{display:flex}
  .site-nav-mobile a{padding:14px 16px;font-size:1rem;border-radius:12px;color:rgba(255,255,255,0.7);text-decoration:none;display:block;transition:all var(--ease-fast);font-weight:500}
  .site-nav-mobile a:hover{color:#fff;background:rgba(255,255,255,0.08)}
  .site-nav-mobile a.active{color:#fff;background:rgba(255,255,255,0.12)}
  .nav-overlay.open{display:block}
  .fullscreen-btn span{display:none}
  .fullscreen-btn{padding:8px 10px}
  header{padding:10px 14px}
  h1{font-size:1.1rem}
}
@media(max-width:600px){
  .time-widget{padding:var(--card-pad-mobile);border-radius:var(--r-card-mobile);max-width:98vw}
  .time-display{font-size:clamp(2.8rem,16vw,4.5rem);letter-spacing:-0.02em}
  .timezone-info{font-size:0.88rem;margin-top:14px}
  footer{font-size:0.75rem}
  #analog-clock{width:min(90vw,350px)!important;height:min(90vw,350px)!important}
  main{padding:90px 12px 50px}
}
@media(max-width:380px){
  .time-display{font-size:clamp(2.4rem,18vw,3.5rem)}
  .mode-switch-btn{padding:12px 24px;font-size:0.88rem;min-width:170px}
  .time-widget{padding:24px 12px 20px}
}

/* ===== Accessibility ===== */
button:focus-visible,a:focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:4px}
@media(prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:0.01ms!important;animation-iteration-count:1!important;transition-duration:0.01ms!important}
}