/* ============================================================
   Etik Kurul Rezervasyon Sistemi (EKRS)
   style.css
   Minimalist / Material Design hissi · Beyaz arka plan
   Author: Ender Salbaş
   ============================================================ */

/* ----------  1. Tasarım Değişkenleri (Design Tokens)  ---------- */
:root {
  /* Renkler */
  --color-primary:        #1a73e8;   /* Google mavisi */
  --color-primary-dark:   #1558b0;
  --color-primary-light:  #e8f0fe;
  --color-success:        #1e8e3e;
  --color-success-light:  #e6f4ea;
  --color-danger:         #d93025;
  --color-danger-light:   #fce8e6;
  --color-warning:        #f9ab00;

  --color-text:           #202124;
  --color-text-soft:      #5f6368;
  --color-border:         #e0e0e0;
  --color-bg:             #ffffff; 
  --color-surface:        #ffffff;
  --color-surface-alt:    #f8f9fa;

  /* Yuvarlatma */
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-pill: 999px;

  /* Gölge (hafif) */
  --shadow-1: 0 1px 2px rgba(60,64,67,.10), 0 1px 3px rgba(60,64,67,.08);
  --shadow-2: 0 2px 6px rgba(60,64,67,.12), 0 1px 2px rgba(60,64,67,.10);
  --shadow-3: 0 8px 24px rgba(60,64,67,.18);

  /* Geçişler */
  --transition: .22s cubic-bezier(.4,0,.2,1);

  /* Ölçüler */
  --container-max: 1080px;
}

/* ----------  2. Sıfırlama (Reset)  ---------- */
*,
*::before,
*::after { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; }

body {
  font-family: 'Roboto', -apple-system, BlinkMacSystemFont, 'Segoe UI', Arial, sans-serif;
  color: var(--color-text);
  background: var(--color-bg);
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.container {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 20px;
}

.hidden { display: none !important; }

/* ----------  3. Header  ---------- */
.app-header {
  border-bottom: 1px solid var(--color-border);
  background: var(--color-surface);
  padding: 18px 0;
}
.brand { display: flex; align-items: center; gap: 14px; }
.brand-icon { color: var(--color-primary); display: flex; }
.brand-text h1 {
  font-size: 1.35rem;
  font-weight: 500;
  letter-spacing: -.2px;
}
.brand-text p {
  font-size: .85rem;
  color: var(--color-text-soft);
}

/* ----------  4. Ana içerik  ---------- */
main { flex: 1 0 auto; padding: 32px 0 56px; }

.card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-1);
  padding: 24px 26px;
}

.intro { margin-bottom: 28px; }
.intro h2 { font-size: 1.15rem; font-weight: 500; margin-bottom: 8px; }
.intro p  { color: var(--color-text-soft); font-size: .95rem; }

/* ----------  5. Toplantı kartları (uçak bileti hissi)  ---------- */
.meetings-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 18px;
}

.meeting-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-1);
  padding: 22px;
  display: flex;
  flex-direction: column;
  gap: 16px;
  transition: transform var(--transition), box-shadow var(--transition);
  opacity: 0;
  transform: translateY(12px);
  animation: cardIn .4s forwards;
}
@keyframes cardIn { to { opacity: 1; transform: translateY(0); } }

.meeting-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-3);
}
.meeting-card.is-disabled:hover { transform: none; box-shadow: var(--shadow-1); }

.meeting-card .mc-top {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 12px;
}

.mc-date {
  font-size: 1.25rem;
  font-weight: 500;
  letter-spacing: -.3px;
}
.mc-code {
  font-size: .78rem;
  color: var(--color-text-soft);
  margin-top: 2px;
}

/* Durum rozeti */
.mc-badge {
  font-size: .72rem;
  font-weight: 500;
  padding: 4px 10px;
  border-radius: var(--radius-pill);
  white-space: nowrap;
}
.mc-badge.available { background: var(--color-success-light); color: var(--color-success); }
.mc-badge.almost    { background: #fef7e0; color: #a56300; }
.mc-badge.full      { background: var(--color-danger-light); color: var(--color-danger); }
.mc-badge.closed    { background: var(--color-surface-alt); color: var(--color-text-soft); }

/* Doluluk göstergesi */
.mc-capacity { font-size: .92rem; color: var(--color-text-soft); }
.mc-capacity strong { color: var(--color-text); font-weight: 500; }

.capacity-bar {
  height: 6px;
  border-radius: var(--radius-pill);
  background: var(--color-surface-alt);
  overflow: hidden;
  margin-top: 8px;
}
.capacity-bar > span {
  display: block;
  height: 100%;
  border-radius: var(--radius-pill);
  background: var(--color-primary);
  transition: width .6s ease;
}
.capacity-bar.almost > span { background: var(--color-warning); }
.capacity-bar.full   > span { background: var(--color-danger); }

.mc-deadline { font-size: .78rem; color: var(--color-text-soft); }

/* ----------  6. Butonlar  ---------- */
.btn {
  font-family: inherit;
  font-size: .92rem;
  font-weight: 500;
  border: none;
  border-radius: var(--radius-sm);
  padding: 11px 18px;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  text-decoration: none;
  transition: background var(--transition), box-shadow var(--transition), transform var(--transition), color var(--transition);
  user-select: none;
}
.btn:active { transform: scale(.98); }
.btn.full { width: 100%; }

.btn-primary { background: var(--color-primary); color: #fff; box-shadow: var(--shadow-1); }
.btn-primary:hover { background: var(--color-primary-dark); box-shadow: var(--shadow-2); }

.btn-secondary { background: var(--color-surface-alt); color: var(--color-text); }
.btn-secondary:hover { background: #eceff1; }

.btn-book { background: var(--color-primary); color: #fff; width: 100%; }
.btn-book:hover { background: var(--color-primary-dark); }

.btn-disabled,
.btn:disabled {
  background: var(--color-surface-alt) !important;
  color: var(--color-text-soft) !important;
  cursor: not-allowed !important;
  box-shadow: none !important;
  transform: none !important;
}

/* Form indirme butonu (tam genişlik) */
.btn-download {
  width: 100%;
  background: var(--color-primary-light);
  color: var(--color-primary-dark);
  border: 1px dashed var(--color-primary);
  margin-bottom: 20px;
}
.btn-download:hover { background: #dbe8fd; }

/* ----------  7. Durum blokları (loading / error / empty)  ---------- */
.state-block {
  text-align: center;
  padding: 48px 20px;
  color: var(--color-text-soft);
}
.state-icon {
  width: 48px; height: 48px;
  border-radius: 50%;
  display: inline-flex; align-items: center; justify-content: center;
  font-size: 1.6rem; font-weight: 700;
  margin-bottom: 12px;
}
.state-icon.error { background: var(--color-danger-light); color: var(--color-danger); }
.state-block .btn { margin-top: 14px; }

/* Spinner (yükleniyor animasyonu) */
.spinner {
  width: 40px; height: 40px;
  border: 4px solid var(--color-primary-light);
  border-top-color: var(--color-primary);
  border-radius: 50%;
  margin: 0 auto 14px;
  animation: spin .8s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* ----------  8. Modal  ---------- */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(32,33,36,.55);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  z-index: 1000;
  animation: fadeIn .2s ease;
}
@keyframes fadeIn { from { opacity: 0; } to { opacity: 1; } }

.modal {
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-3);
  width: 100%;
  max-width: 520px;
  max-height: 92vh;
  overflow-y: auto;
  padding: 28px;
  position: relative;
  animation: modalIn .28s cubic-bezier(.4,0,.2,1);
}
@keyframes modalIn {
  from { opacity: 0; transform: translateY(24px) scale(.98); }
  to   { opacity: 1; transform: translateY(0) scale(1); }
}

.modal-close {
  position: absolute;
  top: 14px; right: 16px;
  background: none;
  border: none;
  font-size: 1.6rem;
  line-height: 1;
  color: var(--color-text-soft);
  cursor: pointer;
  border-radius: 50%;
  width: 34px; height: 34px;
  transition: background var(--transition);
}
.modal-close:hover { background: var(--color-surface-alt); }

.modal-title { font-size: 1.15rem; font-weight: 500; padding-right: 30px; }
.modal-subtitle { font-size: .88rem; color: var(--color-text-soft); margin: 4px 0 18px; }

/* ----------  9. Form  ---------- */
.form-group { margin-bottom: 16px; }
.form-group label {
  display: block;
  font-size: .85rem;
  font-weight: 500;
  margin-bottom: 6px;
  color: var(--color-text);
}
.req { color: var(--color-danger); }

.form-group input,
.form-group textarea {
  width: 100%;
  font-family: inherit;
  font-size: .95rem;
  color: var(--color-text);
  padding: 11px 13px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: var(--color-surface);
  transition: border-color var(--transition), box-shadow var(--transition);
}
.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px var(--color-primary-light);
}
.form-group textarea { resize: vertical; }

.form-group.invalid input,
.form-group.invalid textarea {
  border-color: var(--color-danger);
}
.form-group.invalid input:focus,
.form-group.invalid textarea:focus {
  box-shadow: 0 0 0 3px var(--color-danger-light);
}

.field-error {
  display: block;
  color: var(--color-danger);
  font-size: .78rem;
  margin-top: 5px;
  min-height: 0;
}

.server-error {
  background: var(--color-danger-light);
  color: var(--color-danger);
  border-radius: var(--radius-sm);
  padding: 12px 14px;
  font-size: .86rem;
  margin-bottom: 14px;
}

.modal-actions {
  display: flex;
  justify-content: flex-end;
  gap: 12px;
  margin-top: 8px;
}

/* Buton içi spinner */
.btn-spinner {
  width: 16px; height: 16px;
  border: 2px solid rgba(255,255,255,.5);
  border-top-color: #fff;
  border-radius: 50%;
  animation: spin .7s linear infinite;
}

/* ----------  10. Başarı ekranı  ---------- */
.success-modal { text-align: center; max-width: 460px; }
.success-check { margin: 4px auto 12px; width: 84px; height: 84px; }
.success-check svg { width: 84px; height: 84px; }

.success-check-circle {
  stroke: var(--color-success);
  stroke-width: 3;
  stroke-dasharray: 151;
  stroke-dashoffset: 151;
  animation: strokeCircle .5s cubic-bezier(.65,0,.45,1) forwards;
}
.success-check-mark {
  stroke: var(--color-success);
  stroke-width: 4;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-dasharray: 48;
  stroke-dashoffset: 48;
  animation: strokeMark .35s cubic-bezier(.65,0,.45,1) .45s forwards;
}
@keyframes strokeCircle { to { stroke-dashoffset: 0; } }
@keyframes strokeMark   { to { stroke-dashoffset: 0; } }

.success-modal h2 { font-size: 1.2rem; font-weight: 500; margin-bottom: 18px; color: var(--color-success); }

.success-details {
  background: var(--color-surface-alt);
  border-radius: var(--radius-md);
  padding: 6px 16px;
  margin-bottom: 18px;
  text-align: left;
}
.detail-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  padding: 12px 0;
  border-bottom: 1px solid var(--color-border);
}
.detail-row:last-child { border-bottom: none; }
.detail-label { font-size: .82rem; color: var(--color-text-soft); }
.detail-value { font-size: .95rem; font-weight: 500; text-align: right; }
#success-code { color: var(--color-primary); letter-spacing: .5px; }

.success-warning {
  background: #fef7e0;
  color: #a56300;
  border-radius: var(--radius-sm);
  padding: 12px 14px;
  font-size: .85rem;
  margin-bottom: 18px;
}

.success-note {
  font-size: .82rem;
  color: var(--color-text-soft);
  line-height: 1.5;
  margin-bottom: 18px;
}

/* ----------  11. Footer  ---------- */
.app-footer {
  flex-shrink: 0;
  border-top: 1px solid var(--color-border);
  padding: 18px 0;
  background: var(--color-surface);
}
.app-footer p { font-size: .8rem; color: var(--color-text-soft); text-align: center; }

/* ----------  12. Responsive (Mobil uyum)  ---------- */
@media (max-width: 640px) {
  .brand-text h1 { font-size: 1.1rem; }
  .brand-text p  { font-size: .78rem; }
  main { padding: 22px 0 40px; }
  .meetings-grid { grid-template-columns: 1fr; }
  .modal { padding: 22px 20px; }
  .modal-actions { flex-direction: column-reverse; }
  .modal-actions .btn { width: 100%; }
}

/* Erişilebilirlik: azaltılmış hareket tercihi */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: .01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .01ms !important;
    scroll-behavior: auto !important;
  }
}

/* ----------  Parlatmalar: intro justify + gün sayacı + geçmiş toplantılar  ---------- */
.intro .intro-text { text-align: justify; max-width: none; }
.intro .btn-download { margin-top: 6px; margin-bottom: 0; }

/* Kart orta satırı: doluluk solda, gün sayacı sağda */
.mc-mid { display: flex; align-items: flex-end; justify-content: space-between; gap: 12px; }
.mc-capacity-wrap { flex: 1; min-width: 0; }
.mc-countdown { flex-shrink: 0; text-align: center; line-height: 1.05; color: var(--color-primary); }
.mc-countdown .cd-num { display: block; font-size: 1.5rem; font-weight: 700; }
.mc-countdown .cd-label { font-size: .66rem; color: var(--color-text-soft); }

/* Geçmiş toplantılar bölümü: üstte çizgi + iç boşluk (margin-collapse'a dayanmaz) */
.past-section { margin-top: 44px; padding-top: 28px; border-top: 1px solid var(--color-border); }
.past-header { font-size: 1rem; font-weight: 500; color: var(--color-text-soft); margin-bottom: 4px; }
.past-summary { font-size: .85rem; color: var(--color-text-soft); margin-bottom: 20px; }
.past-summary strong { color: var(--color-text); font-weight: 600; }
.meeting-card.is-past { opacity: .55; }
.meeting-card.is-past:hover { transform: none; box-shadow: var(--shadow-1); opacity: .68; }

/* ============================================================
   13. Bilgi / Belge Merkezi (4 butonlu hub)
   ============================================================ */
.info-hub { margin-bottom: 28px; }
.info-hub h2 { font-size: 1.15rem; font-weight: 500; margin-bottom: 6px; }
.hub-intro { color: var(--color-text-soft); font-size: .92rem; margin-bottom: 18px; }

.hub-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
}

.hub-btn {
  display: flex;
  align-items: center;
  gap: 14px;
  text-align: left;
  padding: 16px 18px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-1);
  cursor: pointer;
  font-family: inherit;
  color: var(--color-text);
  text-decoration: none;
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition), background var(--transition);
}
.hub-btn:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-3);
  border-color: var(--color-primary);
  background: var(--color-primary-light);
}
.hub-btn:active { transform: scale(.99); }

.hub-ico {
  flex-shrink: 0;
  width: 48px; height: 48px;
  border-radius: var(--radius-sm);
  display: flex; align-items: center; justify-content: center;
  background: var(--color-primary-light);
  color: var(--color-primary-dark);
}
.hub-btn:hover .hub-ico { background: #fff; }

.hub-txt { display: flex; flex-direction: column; gap: 2px; position: relative; }
.hub-txt strong { font-size: .98rem; font-weight: 500; letter-spacing: -.2px; }
.hub-txt small { font-size: .78rem; color: var(--color-text-soft); }
.hub-ext { position: absolute; top: -2px; right: -14px; color: var(--color-primary); font-size: .8rem; }

/* ============================================================
   14. Bilgi modalları (koşullar / çalışmalar / üyeler)
   ============================================================ */
.info-modal {
  max-width: 760px;
  padding: 0;
  display: flex;
  flex-direction: column;
  max-height: 92vh;
  overflow: hidden;
}
.info-modal-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 20px 26px;
  border-bottom: 1px solid var(--color-border);
  flex-shrink: 0;
}
.info-modal-head .modal-title { padding-right: 0; }
.info-close { position: static; }

.info-modal-body {
  overflow-y: auto;
  padding: 22px 26px;
  flex: 1 1 auto;
}
.info-modal-body h3.im-h1 {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--color-primary-dark);
  margin: 22px 0 10px;
  padding-bottom: 8px;
  border-bottom: 2px solid var(--color-primary-light);
}
.info-modal-body h3.im-h1:first-child { margin-top: 0; }
.info-modal-body h4.im-h2 {
  font-size: .96rem;
  font-weight: 500;
  color: var(--color-text);
  margin: 18px 0 6px;
}
.info-modal-body p { font-size: .9rem; color: var(--color-text); margin-bottom: 9px; line-height: 1.6; }
.info-modal-body p.im-sub { font-weight: 500; color: var(--color-primary-dark); margin-top: 14px; margin-bottom: 4px; }
.info-modal-body ul { margin: 4px 0 12px 0; padding-left: 22px; }
.info-modal-body li { font-size: .9rem; color: var(--color-text-soft); margin-bottom: 5px; line-height: 1.55; }

.info-modal-foot {
  flex-shrink: 0;
  padding: 16px 26px 20px;
  border-top: 1px solid var(--color-border);
  background: var(--color-surface);
}

/* Koşullar modal — zorunlu okuma alanı */
.scroll-hint {
  display: flex; align-items: center; gap: 8px;
  font-size: .82rem;
  color: #a56300;
  background: #fef7e0;
  border-radius: var(--radius-sm);
  padding: 9px 12px;
  margin-bottom: 12px;
  transition: opacity var(--transition);
}
.hint-dot {
  width: 8px; height: 8px; border-radius: 50%;
  background: var(--color-warning);
  animation: pulse 1.3s ease-in-out infinite;
  flex-shrink: 0;
}
@keyframes pulse { 0%,100% { opacity: 1; } 50% { opacity: .3; } }

.ack-check {
  display: flex; align-items: flex-start; gap: 10px;
  font-size: .9rem;
  color: var(--color-text);
  margin-bottom: 14px;
  cursor: pointer;
  user-select: none;
}
.ack-check input {
  width: 20px; height: 20px;
  margin-top: 1px;
  accent-color: var(--color-primary);
  cursor: pointer;
  flex-shrink: 0;
}
.ack-check input:disabled { cursor: not-allowed; }
.ack-check.is-disabled { color: var(--color-text-soft); cursor: not-allowed; }

/* Üyeler listesi */
.members-note { font-size: .86rem; color: var(--color-text-soft); margin-bottom: 16px; }
.members-list { display: flex; flex-direction: column; gap: 10px; }
.member-card {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 13px 16px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  text-decoration: none;
  color: var(--color-text);
  transition: border-color var(--transition), box-shadow var(--transition), background var(--transition), transform var(--transition);
}
.member-card:hover {
  border-color: var(--color-primary);
  background: var(--color-primary-light);
  box-shadow: var(--shadow-1);
  transform: translateX(2px);
}
.member-info { display: flex; flex-direction: column; gap: 2px; }
.member-name { font-size: .95rem; font-weight: 500; color: var(--color-primary-dark); }
.member-dept { font-size: .82rem; color: var(--color-text-soft); }
.member-link-ico { flex-shrink: 0; color: var(--color-text-soft); }
.member-card:hover .member-link-ico { color: var(--color-primary); }

@media (max-width: 640px) {
  .hub-grid { grid-template-columns: 1fr; }
  .info-modal-head, .info-modal-body, .info-modal-foot { padding-left: 18px; padding-right: 18px; }
  .member-card { flex-wrap: nowrap; }
}

/* Linki olmayan üye (sheette Link boşsa) */
.member-card--nolink { cursor: default; }
.member-card--nolink:hover { border-color: var(--color-border); background: var(--color-surface); box-shadow: none; transform: none; }