/* ============================================
   BABUNOV LAB — единый киберпанк-стиль
   Согласован с simulator.html
   ============================================ */

:root{
  --bg:#0a0a0c;
  --panel:#12141a;
  --yellow:#fcee0a;
  --cyan:#00f0ff;
  --magenta:#ff2a6d;
  --orange:#ff6b35;
  --text:#e8e8e8;
  --muted:#8a8f9a;
  --line:rgba(252,238,10,.25);

  /* Совместимость с разметкой страниц */
  --primary:#0a0a0c;
  --secondary:#fcee0a;
  --accent:#00f0ff;
  --dark:#020617;
  --light:#e8e8e8;
  --gray:#8a8f9a;
  --card-bg:#12141a;
  --success:#2dd4bf;
  --warning:#f59e0b;
  --danger:#ff2a6d;

  --border-color:rgba(255,255,255,.1);
  --hover-color:rgba(0,240,255,.1);
  --gradient:linear-gradient(135deg,#ff2a6d,#fcee0a);

  --font-main:'Rajdhani',system-ui,sans-serif;
  --font-display:'Orbitron',system-ui,sans-serif;
  --font-mono:'Courier New',monospace;

  --container-width:1200px;
  --border-radius:0;
  --border-radius-sm:0;
  --border-radius-lg:0;

  --shadow-sm:0 5px 20px rgba(0,0,0,.4);
  --shadow-md:0 10px 30px rgba(0,0,0,.5);
  --shadow-lg:0 20px 50px rgba(0,0,0,.6);
}

*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}

body{
  font-family:var(--font-main);
  background:var(--bg);
  color:var(--text);
  line-height:1.5;
  overflow-x:hidden;
}

/* Скан-линия по всему сайту */
body::before{
  content:'';position:fixed;inset:0;pointer-events:none;z-index:9998;
  background:repeating-linear-gradient(0deg,transparent,transparent 2px,rgba(0,0,0,.12) 2px,rgba(0,0,0,.12) 4px);
  opacity:.3;
}

a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}

.container{
  max-width:var(--container-width);
  margin:0 auto;
  padding:0 20px;
}

/* ============================================
   Типографика
   ============================================ */
h1,h2,h3,h4{
  font-family:var(--font-display);
  font-weight:700;
  letter-spacing:.04em;
  text-transform:uppercase;
  color:var(--text);
}
h1{font-size:clamp(28px,5vw,48px);font-weight:900;line-height:1.1;margin-bottom:18px}
h2{font-size:clamp(22px,4vw,34px);margin-bottom:12px}
h3{font-size:18px;margin-bottom:10px}
h4{font-size:14px;margin-bottom:8px}
p{color:var(--muted);font-size:16px;line-height:1.6}
strong{color:var(--text)}

.gradient-text{
  background:linear-gradient(90deg,var(--magenta),var(--yellow),var(--cyan));
  -webkit-background-clip:text;background-clip:text;color:transparent;
}

.section{padding:72px 0;border-bottom:1px solid var(--line)}
.section-title{
  font-family:var(--font-display);
  font-size:clamp(22px,4vw,34px);
  font-weight:700;text-transform:uppercase;letter-spacing:.04em;
  margin-bottom:12px;
}
.section-subtitle{color:var(--muted);font-size:17px;max-width:640px;margin-bottom:36px}
.text-center{text-align:center}
.text-right{text-align:right}
.text-left{text-align:left}

.sec-label{
  font-family:var(--font-display);font-size:11px;letter-spacing:.25em;
  color:var(--magenta);margin-bottom:10px;text-transform:uppercase;
}

/* ============================================
   Хедер и меню
   ============================================ */
:root{--header-h:64px}

header{
  background:rgba(10,10,12,.82);
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  border-bottom:1px solid var(--line);
  padding:0;
  position:sticky;top:0;z-index:100;
  transition:background .25s,box-shadow .25s;
}
header.scrolled{background:rgba(10,10,12,.96);box-shadow:0 10px 30px rgba(0,0,0,.55)}

.header-content{
  display:flex;justify-content:space-between;align-items:center;
  min-height:var(--header-h);gap:15px;
}
.logo a{display:block}
.logo h1,.logo h2{
  font-family:var(--font-display);font-size:20px;font-weight:700;
  letter-spacing:.08em;margin:0;white-space:nowrap;
}
.logo span,.logo h1 span,.logo h2 span{color:var(--yellow)}

/* ---- Основная навигация (десктоп) ---- */
.nav-links{
  display:flex;align-items:stretch;gap:2px;align-self:stretch;
  font-size:13px;font-weight:600;text-transform:uppercase;letter-spacing:.06em;
}
.nav-links a{transition:color .2s,background .2s,border-color .2s,opacity .2s}

/* Обычные пункты и родитель подменю */
.nav-link,
.nav-item > .nav-parent{
  position:relative;display:inline-flex;align-items:center;gap:7px;
  padding:0 14px;color:var(--text);opacity:.8;cursor:pointer;
}
.nav-link::after,
.nav-item > .nav-parent::after{
  content:'';position:absolute;left:14px;right:14px;bottom:-1px;height:2px;
  background:var(--yellow);box-shadow:0 0 10px rgba(252,238,10,.6);
  transform:scaleX(0);transform-origin:left;transition:transform .25s;
}
.nav-link:hover,.nav-link.active,
.nav-item:hover > .nav-parent,
.nav-item.active > .nav-parent,
.nav-item.open > .nav-parent{opacity:1;color:var(--yellow)}
.nav-link:hover::after,.nav-link.active::after,
.nav-item.active > .nav-parent::after,
.nav-item.open > .nav-parent::after{transform:scaleX(1)}

.nav-link:focus-visible,
.nav-parent:focus-visible,
.submenu a:focus-visible,
.mobile-menu-btn:focus-visible,
.nav-links a.login-btn:focus-visible,
.nav-links a.school-link:focus-visible{outline:2px solid var(--cyan);outline-offset:-2px}

/* Кнопки справа */
.nav-links a.login-btn,
.nav-links a.school-link{align-self:center;margin-left:10px}
.nav-links a.school-link{
  background:var(--yellow);color:#000;opacity:1;
  padding:9px 16px;font-weight:700;
  clip-path:polygon(0 0,100% 0,100% 70%,90% 100%,0 100%);
  display:inline-flex;align-items:center;gap:6px;
  font-family:var(--font-display);font-size:11px;letter-spacing:.1em;
}
.nav-links a.school-link:hover{background:var(--cyan);color:#000}
.nav-links a.login-btn{
  color:var(--cyan);opacity:1;border:1px solid rgba(0,240,255,.4);
  padding:8px 14px;
  clip-path:polygon(0 0,100% 0,100% 70%,92% 100%,0 100%);
  display:inline-flex;align-items:center;gap:8px;
  font-family:var(--font-display);font-size:11px;letter-spacing:.1em;
  background:transparent;
}
.nav-links a.login-btn:hover{background:rgba(0,240,255,.12);border-color:var(--cyan)}

/* Бургер */
.mobile-menu-btn{
  display:none;background:none;border:1px solid var(--line);
  color:var(--yellow);font-size:20px;width:44px;height:44px;cursor:pointer;
  align-items:center;justify-content:center;transition:background .2s;
}
.mobile-menu-btn:hover{background:rgba(252,238,10,.1)}

/* ---- Выпадающее подменю (десктоп) ---- */
.nav-item{position:relative;display:flex;align-items:stretch}
.nav-item > .nav-parent .fa-chevron-down{font-size:9px;transition:transform .2s}
.nav-item.open > .nav-parent .fa-chevron-down{transform:rotate(180deg)}

.nav-item .submenu{
  position:absolute;top:100%;left:0;min-width:260px;
  background:rgba(18,20,26,.98);
  border:1px solid var(--line);border-top:2px solid var(--yellow);
  padding:8px;z-index:200;
  box-shadow:0 24px 48px rgba(0,0,0,.75);
  clip-path:polygon(0 0,100% 0,100% calc(100% - 14px),calc(100% - 14px) 100%,0 100%);
  display:flex;flex-direction:column;gap:2px;
  opacity:0;visibility:hidden;transform:translateY(8px);pointer-events:none;
  transition:opacity .18s,transform .18s,visibility .18s;
}
.nav-item.open .submenu{opacity:1;visibility:visible;transform:none;pointer-events:auto}

.nav-item .submenu a{
  display:flex;align-items:center;gap:12px;
  padding:10px 12px;color:var(--text);opacity:.85;
  font-size:13px;font-weight:500;text-transform:none;letter-spacing:.02em;
  white-space:nowrap;border-left:2px solid transparent;
}
.nav-item .submenu a i{width:18px;text-align:center;color:var(--cyan);font-size:14px}
.nav-item .submenu a:hover{background:rgba(0,240,255,.08);color:var(--cyan);opacity:1;border-left-color:var(--cyan)}
.nav-item .submenu a.active{color:var(--yellow);opacity:1;border-left-color:var(--yellow);background:rgba(252,238,10,.06)}
.nav-item .submenu a.active i{color:var(--yellow)}
.nav-item .submenu .sub-all{
  font-weight:700;color:var(--yellow);
  border-bottom:1px solid rgba(255,255,255,.08);margin-bottom:4px;
}
.nav-item .submenu .sub-all i{color:var(--yellow)}

/* ============================================
   Кнопки
   ============================================ */
.btn{
  display:inline-flex;align-items:center;gap:8px;
  padding:14px 28px;
  font-family:var(--font-display);font-size:12px;font-weight:700;
  letter-spacing:.1em;text-transform:uppercase;
  background:var(--yellow);color:#000;
  border:0;cursor:pointer;transition:.2s;
  clip-path:polygon(0 0,100% 0,100% 75%,96% 100%,0 100%);
  text-decoration:none;
}
.btn:hover{background:#fff;transform:translateY(-2px);box-shadow:0 10px 30px rgba(252,238,10,.25)}
.btn-outline{background:transparent;color:var(--cyan);border:1px solid var(--cyan)}
.btn-outline:hover{background:rgba(0,240,255,.12);color:var(--cyan)}
.btn-success{background:var(--success);color:#000}
.btn-danger{background:var(--danger);color:#fff}
.btn-warning{background:var(--warning);color:#000}
.btn-sm{padding:5px 12px;font-size:11px}

/* ============================================
   Карточки
   ============================================ */
.card{
  background:var(--panel);
  border:1px solid rgba(255,255,255,.08);
  position:relative;
  transition:border-color .2s,box-shadow .2s,transform .2s;
  clip-path:polygon(0 0,100% 0,100% calc(100% - 16px),calc(100% - 16px) 100%,0 100%);
}
.card::before{
  content:'';position:absolute;top:0;left:0;right:0;height:2px;
  background:linear-gradient(90deg,var(--magenta),var(--yellow),var(--cyan));
  opacity:.7;
}
.card:hover{
  transform:translateY(-3px);
  border-color:var(--yellow);
  box-shadow:inset 0 0 40px rgba(252,238,10,.06);
}
.card-header{padding:20px 24px;border-bottom:1px solid rgba(255,255,255,.08);background:rgba(0,240,255,.04)}
.card-body{padding:20px 24px}
.card-footer{padding:15px 24px;border-top:1px solid rgba(255,255,255,.08)}

/* ============================================
   Формы
   ============================================ */
.form-group{margin-bottom:20px}
.form-group label{
  display:block;margin-bottom:8px;
  color:var(--muted);font-size:13px;font-weight:500;
  font-family:var(--font-display);letter-spacing:.08em;text-transform:uppercase;
}
.form-group input,
.form-group select,
.form-group textarea{
  width:100%;padding:12px 16px;
  background:#0a0a0c;
  border:1px solid rgba(255,255,255,.12);
  color:var(--text);
  font-family:var(--font-main);font-size:15px;
  transition:.2s;
}
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus{
  outline:none;border-color:var(--yellow);
  box-shadow:0 0 0 3px rgba(252,238,10,.1);
}
.form-group input:disabled,
.form-group select:disabled{opacity:.55;cursor:not-allowed}

/* ============================================
   Таблицы
   ============================================ */
.data-table{background:var(--panel);overflow:auto;border:1px solid var(--line)}
.data-table table{width:100%;border-collapse:collapse}
.data-table th,.data-table td{
  padding:12px 15px;text-align:left;
  border-bottom:1px solid rgba(255,255,255,.06);
  font-size:15px;
}
.data-table th{
  color:var(--yellow);font-family:var(--font-display);
  font-size:12px;letter-spacing:.08em;text-transform:uppercase;
}
.data-table tr:hover{background:var(--hover-color)}

/* ============================================
   Состояния
   ============================================ */
.loading{text-align:center;padding:50px;color:var(--muted)}
.loading i{font-size:32px;margin-bottom:15px;color:var(--cyan)}
.error-message{text-align:center;padding:40px;color:var(--danger)}

/* ============================================
   Хелперы
   ============================================ */
.mt-1{margin-top:10px}.mt-2{margin-top:20px}.mt-3{margin-top:30px}
.mb-1{margin-bottom:10px}.mb-2{margin-bottom:20px}.mb-3{margin-bottom:30px}
.p-1{padding:10px}.p-2{padding:20px}.p-3{padding:30px}
.flex{display:flex}.flex-between{display:flex;justify-content:space-between;align-items:center}
.flex-center{display:flex;justify-content:center;align-items:center}
.flex-wrap{flex-wrap:wrap}
.gap-1{gap:10px}.gap-2{gap:20px}

/* ============================================
   Мобильное меню + подменю (аккордеон)
   ============================================ */
@media(max-width:900px){
  .mobile-menu-btn{display:inline-flex}

  .nav-links{
    position:absolute;top:100%;left:0;right:0;
    flex-direction:column;align-items:stretch;gap:0;align-self:auto;
    background:rgba(10,10,12,.98);
    border-bottom:1px solid var(--yellow);
    padding:6px 20px 20px;z-index:99;font-size:15px;
    max-height:calc(100vh - var(--header-h));
    max-height:calc(100dvh - var(--header-h));
    overflow-y:auto;overscroll-behavior:contain;
    opacity:0;visibility:hidden;transform:translateY(-8px);pointer-events:none;
    transition:opacity .2s,transform .2s,visibility .2s;
  }
  .nav-links.show{opacity:1;visibility:visible;transform:none;pointer-events:auto}
  body.menu-open{overflow:hidden}

  .nav-link,
  .nav-item > .nav-parent{
    width:100%;padding:16px 0;justify-content:space-between;
    border-bottom:1px solid rgba(255,255,255,.07);
  }
  .nav-link::after,
  .nav-item > .nav-parent::after{display:none}
  .nav-link.active,.nav-item.active > .nav-parent{box-shadow:inset 3px 0 0 var(--yellow);padding-left:12px}

  .nav-item{display:block;width:100%}
  .nav-item > .nav-parent .fa-chevron-down{font-size:12px}

  .nav-item .submenu{
    position:static;min-width:0;display:flex;
    max-height:0;overflow:hidden;padding:0 0 0 14px;margin:0;
    background:transparent;border:0;border-left:2px solid var(--yellow);
    box-shadow:none;clip-path:none;
    opacity:1;visibility:visible;transform:none;pointer-events:auto;
    transition:max-height .3s ease,padding .3s ease,margin .3s ease;
  }
  .nav-item.open .submenu{max-height:480px;padding:6px 0 6px 14px;margin:8px 0}
  .nav-item .submenu a{padding:12px 4px;white-space:normal;border-left:0}
  .nav-item .submenu a:hover{border-left:0}
  .nav-item .submenu .sub-all{margin-bottom:0}

  .nav-links a.login-btn,
  .nav-links a.school-link{
    align-self:stretch;margin:14px 0 0;padding:14px 16px;
    justify-content:center;text-align:center;
  }
  .nav-links a.school-link{margin-top:10px}
}

/* ============================================
   Футер
   ============================================ */
footer{
  padding:44px 0 40px;font-size:14px;color:var(--muted);
  border-top:1px solid var(--line);margin-top:20px;
}
.footer-content{
  display:flex;flex-wrap:wrap;justify-content:space-between;
  align-items:center;gap:16px;
}
.footer-content .logo h2{
  font-family:var(--font-display);font-size:14px;color:var(--text);
  letter-spacing:.1em;margin:0;
}
.social-links{display:flex;gap:12px}
.social-links a{
  width:38px;height:38px;
  border:1px solid rgba(255,255,255,.15);
  display:flex;align-items:center;justify-content:center;
  transition:.2s;
}
.social-links a:hover{border-color:var(--yellow);color:var(--yellow)}
footer a:hover{color:var(--yellow)}

/* ============================================
   Выпадающее меню пользователя
   ============================================ */
.user-menu{position:relative;cursor:pointer}
.user-name{display:flex;align-items:center;gap:8px;padding:8px 12px;transition:.3s}
.user-name:hover{background:var(--hover-color);color:var(--yellow)}
.user-dropdown{
  display:none;position:absolute;top:100%;right:0;
  background:var(--panel);padding:8px 0;min-width:180px;
  border:1px solid var(--line);z-index:100;
}
.user-menu:hover .user-dropdown{display:block}
.user-dropdown a{display:block;padding:10px 16px;color:var(--text);transition:.3s;font-size:14px}
.user-dropdown a:hover{background:var(--hover-color);color:var(--cyan)}

/* ============================================
   Анимации
   ============================================ */
@keyframes fadeIn{from{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}
@keyframes slideIn{from{transform:translateX(100%);opacity:0}to{transform:translateX(0);opacity:1}}
.fade-in{animation:fadeIn .3s ease}
.slide-in{animation:slideIn .3s ease}

@media(prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important}
}