/* ===========================================================
   Akilevo — Ortak Stil Dosyası
   Tüm sayfalar (index, register, login, dashboard) bunu kullanır.
   =========================================================== */

:root{
  --navy: #022044;
  --navy-soft: #0B2C55;
  --blue: #117CD1;
  --purple: #9048A0;
  --orange: #FDA221;
  --green: #84BB30;
  --teal: #08A8C3;

  --paper: #FFFFFF;
  --panel: #F5F7FB;
  --panel-line: #E7EBF3;
  --muted: #5B6478;
  --radius: 20px;
  --max-w: 1120px;
}

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

body{
  margin:0;
  background: var(--paper);
  color: var(--navy-soft);
  font-family: 'Inter', sans-serif;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, .display, .wordmark {
  font-family: 'Fredoka', sans-serif;
  font-weight: 600;
  letter-spacing: -0.01em;
  margin: 0;
}

a { color: inherit; }
img, svg { display:block; max-width:100%; }

.wrap{ max-width: var(--max-w); margin: 0 auto; padding: 0 24px; }

/* ---------- Header ---------- */
header{
  position: sticky;
  top: 0;
  z-index: 20;
  backdrop-filter: blur(10px);
  background: rgba(255,255,255,0.82);
  border-bottom: 1px solid var(--panel-line);
}
.header-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  padding: 14px 24px;
}
.logo{ display:flex; align-items:center; gap:10px; text-decoration:none; }
.logo img{ height: 40px; width:auto; }
.wordmark{ font-size: 1.35rem; }
.wordmark .c1{ color: var(--navy); }
.wordmark .c2{ color: var(--blue); }
.wordmark .c3{ color: var(--purple); }
.wordmark .c4{ color: var(--orange); }

.header-actions{ display:flex; align-items:center; gap:12px; }

.lang-toggle{
  display:flex; gap: 4px; background: var(--panel);
  border-radius: 999px; padding: 4px; border: 1px solid var(--panel-line);
}
.lang-toggle button{
  border:none; background: transparent; color: var(--muted);
  font-family:'Inter',sans-serif; font-weight:700; font-size:0.78rem;
  letter-spacing: 0.04em; padding: 7px 14px; border-radius: 999px; cursor:pointer;
  transition: background .2s ease, color .2s ease;
}
.lang-toggle button.active{ background: var(--navy); color: #fff; }

button:focus-visible, input:focus-visible, a:focus-visible{
  outline: 2px solid var(--blue); outline-offset: 2px;
}

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex; align-items:center; justify-content:center; gap:8px;
  padding: 13px 26px; border-radius: 999px;
  font-family:'Inter',sans-serif; font-weight: 700; font-size: 0.92rem;
  border: none; cursor:pointer; text-decoration:none;
  transition: transform .18s ease, box-shadow .18s ease;
}
.btn-primary{
  background: linear-gradient(120deg, var(--orange), #FB8A3C);
  color: #2A1400;
  box-shadow: 0 12px 28px -12px rgba(253,162,33,0.65);
}
.btn-primary:hover{ transform: translateY(-2px); }
.btn-primary:disabled{ opacity:0.6; cursor:not-allowed; transform:none; }

.btn-ghost{
  background: var(--panel);
  color: var(--navy);
  border: 1px solid var(--panel-line);
}
.btn-ghost:hover{ background: #EEF1F8; }

.btn-secondary{
  background: #fff;
  color: var(--blue);
  border: 1.5px solid var(--blue);
}

/* ---------- Auth pages (register / login) ---------- */
.auth-shell{
  min-height: calc(100vh - 70px);
  display:flex;
  align-items:flex-start;
  justify-content:center;
  padding: 56px 20px 80px;
}
.auth-card{
  background: var(--panel);
  border: 1px solid var(--panel-line);
  border-radius: 24px;
  padding: 40px;
  width: 100%;
  max-width: 560px;
}
.auth-card h1{
  font-size: 1.7rem;
  color: var(--navy);
  text-align:center;
}
.auth-card p.lead{
  text-align:center;
  color: var(--muted);
  margin: 10px 0 28px;
  font-size: 0.95rem;
}
.auth-switch{
  text-align:center;
  margin-top: 20px;
  font-size: 0.9rem;
  color: var(--muted);
}
.auth-switch a{ color: var(--blue); font-weight: 700; text-decoration:none; }
.auth-switch a:hover{ text-decoration:underline; }

form{ display:grid; grid-template-columns: 1fr 1fr; gap: 16px; }
form.single-col{ grid-template-columns: 1fr; }
.field{ display:flex; flex-direction:column; gap: 6px; }
.field.full{ grid-column: 1 / -1; }
label{ font-size: 0.78rem; font-weight: 700; color: var(--navy-soft); letter-spacing: 0.02em; }
input{
  background: #fff;
  border: 1.5px solid var(--panel-line);
  border-radius: 10px;
  padding: 12px 14px;
  color: var(--navy);
  font-family: 'Inter', sans-serif;
  font-size: 0.95rem;
}
input:focus{ border-color: var(--blue); }
input::placeholder{ color: #A6ADC2; }
.website-field{ position: absolute; left: -9999px; width: 1px; height: 1px; overflow: hidden; }

.submit-row{ grid-column: 1 / -1; margin-top: 8px; }
.submit-row .btn{ width:100%; }

.form-msg{ grid-column: 1 / -1; font-size: 0.88rem; padding: 10px 14px; border-radius: 10px; display:none; }
.form-msg.show{ display:block; }
.form-msg.success{ background: rgba(132,187,48,0.15); color: #4C7317; }
.form-msg.error{ background: rgba(230,90,80,0.12); color: #B33A2E; }

/* ---------- Child group (register.html) ---------- */
.child-group{
  grid-column: 1 / -1;
  background: #fff;
  border: 1.5px dashed var(--panel-line);
  border-radius: 14px;
  padding: 18px;
  display:flex;
  flex-direction: column;
  gap: 16px;
  margin-bottom: 4px;
}
.child-group-row{
  display:grid;
  grid-template-columns: 1fr 1fr auto;
  gap: 14px;
  align-items:end;
}
.child-group-row.two-col{ grid-template-columns: 1fr 1fr; }
.child-group .remove-child{
  background: none;
  border: 1.5px solid var(--panel-line);
  color: var(--muted);
  border-radius: 8px;
  width: 40px;
  height: 44px;
  cursor: pointer;
  font-size: 1.1rem;
  line-height: 1;
}
.child-group .remove-child:hover{ border-color:#E48678; color:#B33A2E; }

.avatar-picker{ display:flex; flex-wrap:wrap; gap:8px; }
.avatar-option{
  width:44px; height:44px; border-radius:12px; border:2px solid var(--panel-line);
  background: var(--panel); font-size:1.35rem; cursor:pointer;
  display:flex; align-items:center; justify-content:center;
}
.avatar-option.selected{ border-color: var(--blue); background: rgba(17,124,209,0.1); }

.interest-picker{ display:flex; flex-wrap:wrap; gap:8px; }
.interest-chip{
  display:inline-flex; align-items:center; gap:6px;
  border:1.5px solid var(--panel-line); border-radius:999px; padding:7px 14px;
  font-size:0.82rem; font-weight:600; color: var(--navy-soft); cursor:pointer; background:#fff;
  user-select:none;
}
.interest-chip.selected{ border-color: var(--purple); background: rgba(144,72,160,0.08); color: var(--purple); }
.interest-chip input{ display:none; }
.interest-disclaimer{ font-size:0.76rem; color: var(--muted); line-height:1.5; margin-top:2px; }

.add-child-btn{
  grid-column: 1 / -1;
  background: none;
  border: 1.5px dashed var(--blue);
  color: var(--blue);
  border-radius: 10px;
  padding: 10px;
  font-weight: 700;
  font-size: 0.85rem;
  cursor:pointer;
  font-family:'Inter',sans-serif;
}
.add-child-btn:hover{ background: rgba(17,124,209,0.06); }

.section-divider{
  grid-column: 1 / -1;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--purple);
  margin: 6px 0 -4px;
}

/* ---------- Dashboard ---------- */
.dash-header{
  display:flex;
  justify-content:space-between;
  align-items:flex-start;
  flex-wrap: wrap;
  gap: 16px;
  margin-bottom: 32px;
}
.dash-greeting h1{ font-size: 1.7rem; color: var(--navy); }
.dash-greeting p{ color: var(--muted); margin-top: 6px; }

.children-grid{
  display:grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 20px;
}
.child-card{
  background: var(--panel);
  border: 1px solid var(--panel-line);
  border-radius: var(--radius);
  padding: 24px;
}
.child-card .avatar{
  width: 52px; height:52px; border-radius:50%;
  display:flex; align-items:center; justify-content:center;
  font-family:'Fredoka',sans-serif; font-weight:600; font-size:1.3rem;
  color:#fff; margin-bottom:16px;
}
.child-card h3{ font-size: 1.15rem; color: var(--navy); margin-bottom: 4px; }
.child-card .meta{ color: var(--muted); font-size: 0.88rem; }
.child-card .badge{
  display:inline-block; margin-top: 14px;
  background: rgba(144,72,160,0.1); color: var(--purple);
  font-size: 0.75rem; font-weight: 700;
  padding: 5px 12px; border-radius: 999px;
}

.empty-state{
  text-align:center;
  padding: 60px 20px;
  color: var(--muted);
}

.loading-state{
  text-align:center;
  padding: 60px 20px;
  color: var(--muted);
}

footer{
  padding: 32px 0; text-align:center; color: var(--muted); font-size: 0.82rem;
  border-top: 1px solid var(--panel-line); margin-top: 40px;
}

@media (max-width: 720px){
  form{ grid-template-columns: 1fr; }
  .child-group-row{ grid-template-columns: 1fr; }
  .child-group .remove-child{ width:100%; }
  .auth-card{ padding: 28px 22px; }
}

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

/* ---------- Sudoku Motoru (paylaşılan) ---------- */
.sudoku-grid{
  display: grid;
  grid-template-columns: repeat(var(--sudoku-size), 1fr);
  gap: 2px;
  background: var(--navy);
  border-radius: 12px;
  padding: 2px;
  max-width: 420px;
  margin: 0 auto;
  aspect-ratio: 1;
}
.sudoku-cell{
  aspect-ratio: 1;
  background: #fff;
  border: none;
  font-family: 'Fredoka', sans-serif;
  font-weight: 600;
  font-size: clamp(0.95rem, 4.5vw, 1.35rem);
  color: var(--navy);
  display:flex; align-items:center; justify-content:center;
  cursor: pointer;
}
.sudoku-cell.given{ color: var(--muted); background: var(--panel); cursor: default; font-weight: 700; }
.sudoku-cell.shade{ background: #EEF1F8; }
.sudoku-cell.given.shade{ background: #E4E9F2; }
.sudoku-cell.selected{ background: rgba(17,124,209,0.2); }
.sudoku-cell.conflict{ background: rgba(230,90,80,0.28); color:#B33A2E; }

.sudoku-palette{ display:flex; justify-content:center; gap:8px; flex-wrap:wrap; margin-top:18px; }
.sudoku-palette button{
  width:46px; height:46px; border-radius:10px; border:1.5px solid var(--panel-line);
  background:#fff; font-weight:700; font-size:1.1rem; cursor:pointer; font-family:'Fredoka',sans-serif; color:var(--navy);
}
.sudoku-palette button:hover{ border-color: var(--blue); }
.sudoku-palette button.erase{ color: var(--muted); font-size:1.3rem; }