/* Tema: Dark + Glassmorphism (resim1 benzeri) */
:root{
  --bg0:#070a12;
  --bg1:#081827;
  --bg2:#06253a;

  --glass-bg: rgba(14, 23, 38, .55);
  --glass-bg-2: rgba(11, 18, 30, .42);
  --glass-border: rgba(255,255,255,.08);

  --text:#e8eefc;
  --muted:#a7b4d6;
  --muted2:#7f8ab0;

  --accent:#2bd4d4;
  --accent2:#3b82f6;

  --danger:#ef4444;
  --warning:#f59e0b;
  --success:#22c55e;

  --shadow: 0 18px 40px rgba(0,0,0,.45);

  --radius-xl: 18px;
  --radius-lg: 14px;
  --radius-md: 12px;

  --pad-1: 10px;
  --pad-2: 14px;
  --pad-3: 18px;

  --font: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, "Apple Color Emoji","Segoe UI Emoji";
}

*{ box-sizing: border-box; }
html, body{ height:100%; }
html{ color-scheme: dark; }
body{
  margin:0;
  font-family: var(--font);
  color: var(--text);
  background: radial-gradient(1200px 700px at 70% 30%, rgba(43,212,212,.16), transparent 60%),
              radial-gradient(1000px 650px at 15% 15%, rgba(59,130,246,.14), transparent 55%),
              linear-gradient(180deg, var(--bg0), var(--bg1) 45%, var(--bg2));
  overflow:hidden;
}

.bg-gradient{
  position: fixed;
  inset: 0;
  pointer-events:none;
  background:
    radial-gradient(700px 380px at 20% 70%, rgba(59,130,246,.14), transparent 65%),
    radial-gradient(900px 520px at 78% 40%, rgba(43,212,212,.12), transparent 70%);
  filter: blur(0px);
}

.glass{
  background: linear-gradient(180deg, var(--glass-bg), var(--glass-bg-2));
  border: 1px solid var(--glass-border);
  box-shadow: var(--shadow);
  backdrop-filter: blur(12px);
}

.app-shell{
  position: relative;
  height: 100vh;
  width: 100vw;
  display: grid;
  grid-template-columns: 290px 1fr;
  gap: 14px;
  padding: 14px;
}

.sidebar{
  border-radius: var(--radius-xl);
  padding: 14px;
  display:flex;
  flex-direction: column;
  min-height: 0;
}

.brand{
  display:flex;
  gap: 12px;
  align-items:center;
  padding: 10px 10px 14px 10px;
  border-bottom: 1px solid rgba(255,255,255,.06);
}
.brand-badge{
  width: 40px; height: 40px;
  border-radius: 14px;
  display:flex; align-items:center; justify-content:center;
  background: rgba(43,212,212,.12);
  border: 1px solid rgba(43,212,212,.25);
  color: var(--accent);
  font-weight: 800;
  letter-spacing: .5px;
}
.brand-title{ font-weight: 750; }
.brand-sub{ color: var(--muted2); font-size: 12px; margin-top: 2px; }

.nav{ padding: 12px 6px; display:flex; flex-direction: column; gap: 8px; overflow:auto; }
.nav-item{
  width: 100%;
  display:flex; gap: 10px; align-items:center;
  justify-content:flex-start;
  text-align:left;
  padding: 10px 10px;
  border-radius: 14px;
  border: 1px solid rgba(255,255,255,.06);
  background: rgba(255,255,255,.02);
  color: var(--text);
  cursor:pointer;
  transition: transform .18s ease, background .18s ease, border-color .18s ease;
}
.nav-item:hover{ transform: translateY(-1px); background: rgba(255,255,255,.03); border-color: rgba(255,255,255,.10); }
.nav-item.active{
  border-color: rgba(43,212,212,.26);
  background: rgba(43,212,212,.08);
}
.nav-item.sub{
  margin-left: 14px;
  width: calc(100% - 14px);
  padding: 9px 10px;
  border-radius: 12px;
  background: rgba(255,255,255,.015);
}
.nav-item.sub .nav-label{ font-size: 12.5px; color: var(--muted); }
.nav-item.sub:hover{ background: rgba(255,255,255,.025); }
.nav-item.sub.active{
  border-color: rgba(43,212,212,.20);
  background: rgba(43,212,212,.06);
}
.nav-icon{ width: 22px; display:inline-flex; justify-content:center; }
.nav-label{ flex: 1; text-align:left; }

.sidebar-footer{
  margin-top:auto;
  display:flex;
  gap: 8px;
  flex-wrap: wrap;
  padding-top: 12px;
  border-top: 1px solid rgba(255,255,255,.06);
}
.sidebar-footer:empty{
  display:none;
  padding-top: 0;
  border-top: none;
}

.main{
  min-height: 0;
  display:flex;
  flex-direction: column;
  gap: 14px;
}

.topbar{
  border-radius: var(--radius-xl);
  padding: 12px 14px;
  display:flex;
  align-items:center;
  justify-content: space-between;
  gap: 12px;
}

.topbar-left{ display:flex; align-items:center; gap:10px; min-width:0; }
.topbar-left > div{ min-width:0; }
.topbar-right{ display:flex; align-items:center; gap:10px; }
.page-title{ font-weight: 780; font-size: 16px; }
.page-sub{ color: var(--muted2); font-size: 12px; margin-top: 2px; }

.content{
  border-radius: var(--radius-xl);
  min-height: 0;
  overflow: auto;
  padding: 14px;
}

/* responsive */
.menu-btn{
  display:none;
  width: 40px;
  height: 40px;
  border-radius: 14px;
  border: 1px solid rgba(255,255,255,.08);
  background: rgba(255,255,255,.03);
  color: var(--text);
  cursor:pointer;
  align-items:center;
  justify-content:center;
  transition: transform .18s ease, background .18s ease, border-color .18s ease;
}
.menu-btn:hover{ transform: translateY(-1px); background: rgba(255,255,255,.04); border-color: rgba(255,255,255,.12); }

.sidebar-backdrop{
  display:none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,.45);
  backdrop-filter: blur(2px);
  z-index: 35;
}

@media (max-width: 980px){
  body{ overflow:auto; }
  .app-shell{ grid-template-columns: 1fr; height: auto; min-height: 100vh; }
  .menu-btn{ display:inline-flex; }

  /* Off-canvas sidebar */
  .sidebar{
    position: fixed;
    top: 14px;
    bottom: 14px;
    left: 14px;
    width: min(86vw, 320px);
    max-width: 320px;
    transform: translateX(calc(-100% - 18px));
    transition: transform .22s ease;
    z-index: 40;
  }
  body.sidebar-open .sidebar{ transform: translateX(0); }
  body.sidebar-open .sidebar-backdrop{ display:block; }
  .main{ min-height: 60vh; }
}



/* --- Modül 3-4: Auth ekranı (giriş/kayıt) --- */
body.auth-mode{
  overflow:hidden;
}
body.auth-mode .app-shell{
  grid-template-columns: 1fr;
}
body.auth-mode .sidebar{
  display:none;
}
body.auth-mode .topbar{
  display:none;
}
body.auth-mode .content{
  height: calc(100vh - 28px);
  display:flex;
  align-items:center;
  justify-content:center;
  padding: 14px;
}
.auth-wrap{
  width: min(980px, 100%);
  display:grid;
  grid-template-columns: 1.1fr .9fr;
  gap: 14px;
}
@media (max-width: 900px){
  .auth-wrap{ grid-template-columns: 1fr; }
}
.auth-hero{
  border-radius: var(--radius-xl);
  padding: 18px;
  display:flex;
  flex-direction: column;
  gap: 10px;
  min-height: 220px;
}
.auth-hero .hero-title{
  font-size: 22px;
  font-weight: 800;
  letter-spacing: .2px;
}
.auth-hero .hero-sub{
  color: var(--muted);
  line-height: 1.45;
}
.auth-hero .hero-badges{
  display:flex;
  gap: 10px;
  flex-wrap: wrap;
  margin-top: 6px;
}
.mini-note{
  color: var(--muted);
  font-size: 12px;
  line-height: 1.35;
}

/* === Auth (Resim2 stili) === */
.auth-single{
  width: min(860px, 100%);
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: calc(100vh - 80px);
  padding: 18px 0;
}

.auth-card{
  width: min(720px, 100%);
  padding: 18px 18px 20px;
  border-radius: var(--radius-xl);
}

.auth-head{
  display:flex;
  align-items:center;
  gap:12px;
}

.auth-head-icon{
  width: 46px;
  height: 46px;
  border-radius: 16px;
  display:flex;
  align-items:center;
  justify-content:center;
  background: rgba(255,255,255,.06);
  border: 1px solid rgba(255,255,255,.12);
  box-shadow: var(--shadow);
  font-size: 18px;
}

.auth-head-title{
  font-size: 28px;
  font-weight: 800;
  letter-spacing: .2px;
}

.auth-head-sub{
  color: var(--muted);
  margin-top: 2px;
}

.auth-chip-row{
  display:flex;
  gap: 10px;
  flex-wrap: wrap;
  margin-top: 12px;
}

.auth-tabs{
  display:flex;
  gap:10px;
  margin-top: 14px;
}

.auth-tab{
  padding: 8px 12px;
  border-radius: 999px;
  border: 1px solid rgba(255,255,255,.12);
  background: rgba(255,255,255,.04);
  color: rgba(255,255,255,.85);
  cursor: pointer;
  transition: transform .12s ease, background .12s ease, border-color .12s ease;
}

.auth-tab:hover{ transform: translateY(-1px); }

.auth-tab.active{
  border-color: rgba(46, 211, 230, .42);
  background: rgba(46, 211, 230, .10);
}

.auth-mini{
  margin-top: 10px;
  color: var(--muted);
  font-size: 13px;
}

.form-col{
  display:flex;
  flex-direction: column;
  gap: 12px;
}

.auth-actions{
  display:flex;
  justify-content:flex-end;
  margin-top: 2px;
}