:root {
  --c-dark: #212121;
  --c-white: #ffffff;
  --c-body: #606060;
  --c-light: #f2f2f2;
  --c-red: #b92127;
  --c-red-dark: #96181d;
  --c-muted: #aaaaaa;
  --c-gray: #808080;
  --c-border: #e2e2e2;
  --c-black: #171717;
  --c-green: #1f8a4c;
  --c-green-bg: #e6f6ec;
  --font-head: "Poppins", "Segoe UI", sans-serif;
  --font-body: "Montserrat", "Segoe UI", sans-serif;
  --radius: 14px;
  --sidebar-w: 250px;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
body {
  background: #f7f7f8;
  color: var(--c-dark);
  font-family: var(--font-body);
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
h1, h2, h3 { font-family: var(--font-head); font-weight: 500; letter-spacing: -0.01em; }
table { border-collapse: collapse; width: 100%; }

.pnl-btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  border-radius: 100px; padding: 12px 22px; border: none; cursor: pointer;
  font-family: var(--font-head); font-weight: 500; font-size: 14px;
  transition: transform .15s ease, background .15s ease;
}
.pnl-btn:hover { transform: translateY(-1px); }
.pnl-btn--primary { background: var(--c-red); color: #fff; }
.pnl-btn--primary:hover { background: var(--c-red-dark); }
.pnl-btn--danger { background: #fce9e8; color: #a3241f; }
.pnl-btn--danger:hover { background: #f6d2cf; }
.pnl-btn--small { padding: 8px 16px; font-size: 13px; }

/* ===== Login ===== */
.pnl-login-body {
  min-height: 100vh; display: flex; align-items: center; justify-content: center;
  background: linear-gradient(160deg, #171717 0%, #2b2b2b 100%); padding: 20px;
}
.pnl-login-card {
  background: #fff; border-radius: 20px; padding: clamp(28px, 4vw, 44px);
  width: 100%; max-width: 400px; box-shadow: 0 30px 80px rgba(0,0,0,0.35);
  text-align: center;
}
.pnl-login-logo { height: 40px; width: auto; margin: 0 auto 20px; }
.pnl-login-card h1 { font-size: 1.5rem; margin-bottom: 6px; }
.pnl-login-sub { color: var(--c-body); font-size: 14px; margin-bottom: 24px; }
.pnl-login-error {
  background: #fce9e8; color: #a3241f; border-radius: 10px; padding: 10px 14px;
  font-size: 13px; margin-bottom: 18px;
}
.pnl-login-card form { text-align: left; display: flex; flex-direction: column; gap: 16px; }
.pnl-login-submit { width: 100%; padding: 14px; margin-top: 6px; }

/* ===== Fields ===== */
.pnl-field { display: flex; flex-direction: column; gap: 6px; }
.pnl-field label { font-family: var(--font-head); font-size: 13px; color: var(--c-dark); font-weight: 500; }
.pnl-field input, .pnl-field select, .pnl-field textarea {
  border: 1px solid var(--c-border); border-radius: 10px; padding: 12px 14px;
  font-family: var(--font-body); font-size: 14px; color: var(--c-dark); background: #fff;
  outline: none; transition: border-color .2s ease; width: 100%;
}
.pnl-field input:focus, .pnl-field select:focus, .pnl-field textarea:focus { border-color: var(--c-red); }
.pnl-field-error { color: #a3241f; font-size: 12px; }
.pnl-field-error:empty { display: none; }

/* ===== Layout ===== */
.pnl-sidebar-toggle-input { position: absolute; opacity: 0; pointer-events: none; }
.pnl-body { display: flex; min-height: 100vh; }

.pnl-sidebar {
  width: var(--sidebar-w); flex-shrink: 0; background: var(--c-black); color: #fff;
  display: flex; flex-direction: column; padding: 22px 16px;
  position: fixed; inset: 0 auto 0 0; z-index: 100; transition: transform .25s ease;
}
.pnl-sidebar__logo { display: block; padding: 6px 10px 22px; }
.pnl-sidebar__logo img { height: 32px; width: auto; }
.pnl-sidebar__nav { display: flex; flex-direction: column; gap: 2px; flex: 1; }
.pnl-sidebar__nav a {
  display: flex; align-items: center; gap: 12px; padding: 11px 12px; border-radius: 10px;
  color: #b8b8b8; font-family: var(--font-head); font-size: 14px; transition: background .15s ease, color .15s ease;
}
.pnl-sidebar__nav a svg { flex-shrink: 0; opacity: .85; }
.pnl-sidebar__nav a:hover { background: rgba(255,255,255,0.06); color: #fff; }
.pnl-sidebar__nav a.is-active { background: var(--c-red); color: #fff; }
.pnl-sidebar__footer { display: flex; flex-direction: column; gap: 4px; padding-top: 16px; border-top: 1px solid rgba(255,255,255,0.1); }
.pnl-sidebar__sitelink, .pnl-sidebar__logout { padding: 10px 12px; font-size: 13px; color: #a8a8a8; border-radius: 10px; }
.pnl-sidebar__sitelink:hover, .pnl-sidebar__logout:hover { background: rgba(255,255,255,0.06); color: #fff; }

.pnl-sidebar-scrim { display: none; }

.pnl-main { flex: 1; margin-left: var(--sidebar-w); min-width: 0; }
.pnl-topbar {
  display: flex; align-items: center; gap: 16px; padding: 18px 28px;
  background: #fff; border-bottom: 1px solid var(--c-border); position: sticky; top: 0; z-index: 40;
}
.pnl-topbar__title { font-size: 1.15rem; flex: 1; }
.pnl-topbar__user { font-size: 13px; color: var(--c-body); }
.pnl-menu-btn { display: none; width: 38px; height: 38px; border-radius: 10px; background: var(--c-light); flex-direction: column; align-items: center; justify-content: center; gap: 4px; cursor: pointer; }
.pnl-menu-btn span { width: 16px; height: 2px; background: var(--c-dark); }

.pnl-content { padding: clamp(18px, 3vw, 30px); max-width: 1100px; }

/* ===== Stat cards ===== */
.pnl-stats-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(160px, 1fr)); gap: 14px; margin-bottom: 8px; }
.pnl-stat-card { background: #fff; border-radius: var(--radius); padding: 20px 22px; border: 1px solid var(--c-border); }
.pnl-stat-card--accent { background: var(--c-dark); border-color: var(--c-dark); }
.pnl-stat-card--accent .pnl-stat-label, .pnl-stat-card--accent .pnl-stat-sub { color: #b8b8b8; }
.pnl-stat-card--accent .pnl-stat-value { color: #fff; }
.pnl-stat-label { display: block; font-size: 13px; color: var(--c-body); margin-bottom: 8px; }
.pnl-stat-value { display: block; font-family: var(--font-head); font-size: 2rem; font-weight: 600; transition: color .3s ease; }
.pnl-stat-value.pnl-flash { color: var(--c-red); }
.pnl-stat-sub { display: block; font-size: 12px; color: var(--c-muted); margin-top: 2px; }

.pnl-live-indicator { display: flex; align-items: center; gap: 8px; font-size: 12px; color: var(--c-body); margin: 14px 2px 22px; }
.pnl-live-dot { width: 8px; height: 8px; border-radius: 50%; background: var(--c-green); animation: pnl-pulse 1.6s ease-in-out infinite; }
@keyframes pnl-pulse { 0%, 100% { opacity: 1; } 50% { opacity: .3; } }

/* ===== Hızlı erişim kartları ===== */
.pnl-quicklinks { display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); gap: 12px; }
.pnl-quicklink {
  display: flex; flex-direction: column; gap: 10px; padding: 16px; border-radius: 12px;
  border: 1px solid var(--c-border); background: #fff; transition: border-color .15s ease, transform .15s ease;
}
.pnl-quicklink:hover { border-color: var(--c-red); transform: translateY(-2px); }
.pnl-quicklink__icon { width: 36px; height: 36px; border-radius: 10px; background: var(--c-light); display: flex; align-items: center; justify-content: center; color: var(--c-red); }
.pnl-quicklink__label { font-family: var(--font-head); font-size: 14px; font-weight: 500; color: var(--c-dark); }
.pnl-quicklink__count { font-size: 12.5px; color: var(--c-body); }

/* ===== Panel blocks ===== */
.pnl-panel { background: #fff; border-radius: var(--radius); border: 1px solid var(--c-border); padding: clamp(18px, 3vw, 26px); margin-bottom: 20px; }
.pnl-panel__head { display: flex; align-items: center; justify-content: space-between; gap: 16px; margin-bottom: 18px; flex-wrap: wrap; }
.pnl-panel__head h2 { font-size: 1.1rem; }
.pnl-link { color: var(--c-red); font-size: 13px; font-family: var(--font-head); }
.pnl-badge { background: var(--c-light); color: var(--c-body); font-size: 12px; padding: 5px 12px; border-radius: 100px; }
.pnl-empty { color: var(--c-muted); font-size: 14px; padding: 12px 0; }

.pnl-alert { border-radius: 10px; padding: 12px 16px; font-size: 13px; margin-bottom: 16px; }
.pnl-alert--error { background: #fce9e8; color: #a3241f; }
.pnl-alert--success { background: var(--c-green-bg); color: var(--c-green); }

.pnl-table-wrap { overflow-x: auto; }
.pnl-table { min-width: 560px; }
.pnl-table th { text-align: left; font-family: var(--font-head); font-size: 12px; color: var(--c-body); padding: 10px 12px; border-bottom: 1px solid var(--c-border); white-space: nowrap; }
.pnl-table td { padding: 12px; border-bottom: 1px solid var(--c-border); font-size: 13.5px; vertical-align: top; }
.pnl-table tr:last-child td { border-bottom: none; }
.pnl-nowrap { white-space: nowrap; }
.pnl-message-cell { max-width: 320px; white-space: pre-wrap; }
.pnl-tag { font-size: 11px; padding: 4px 10px; border-radius: 100px; font-family: var(--font-head); }
.pnl-tag--ok { background: var(--c-green-bg); color: var(--c-green); }
.pnl-tag--warn { background: #fdf2d9; color: #96721a; }

/* ===== Upload form / photo grid ===== */
.pnl-upload-form { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; align-items: end; }
.pnl-upload-form .pnl-btn { grid-column: 1 / -1; justify-self: start; }
.pnl-photo-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); gap: 16px; }
.pnl-photo-card { border: 1px solid var(--c-border); border-radius: var(--radius); overflow: hidden; display: flex; flex-direction: column; }
.pnl-photo-card img { width: 100%; aspect-ratio: 4/3; object-fit: cover; }
.pnl-photo-card__form { display: flex; gap: 8px; padding: 12px; border-top: 1px solid var(--c-border); }
.pnl-photo-card__form input { flex: 1; border: 1px solid var(--c-border); border-radius: 8px; padding: 8px 10px; font-size: 12.5px; }
.pnl-photo-card > form:last-child { padding: 0 12px 12px; }
.pnl-photo-card > form:last-child .pnl-btn { width: 100%; }

.pnl-logo-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(160px, 1fr)); gap: 16px; }
.pnl-logo-card {
  border: 1px solid var(--c-border); border-radius: var(--radius); overflow: hidden;
  display: flex; flex-direction: column; align-items: center; gap: 10px; padding: 18px 14px;
  background: #fbfbfb;
}
.pnl-logo-card img { max-height: 44px; width: auto; max-width: 100%; object-fit: contain; }
.pnl-logo-card__name { font-size: 12.5px; color: var(--c-body); text-align: center; }
.pnl-logo-card form { width: 100%; }
.pnl-logo-card .pnl-btn { width: 100%; }

/* ===== Settings ===== */
.pnl-settings-desc { color: var(--c-body); font-size: 14px; line-height: 1.6; margin-bottom: 18px; }
.pnl-status-on { color: var(--c-green); }
.pnl-status-off { color: #a3241f; }

@media (max-width: 900px) {
  .pnl-sidebar { transform: translateX(-100%); box-shadow: 20px 0 60px rgba(0,0,0,0.3); }
  .pnl-sidebar-toggle-input:checked ~ .pnl-sidebar { transform: translateX(0); }
  .pnl-sidebar-toggle-input:checked ~ .pnl-sidebar-scrim {
    display: block; position: fixed; inset: 0; background: rgba(0,0,0,0.4); z-index: 90;
  }
  .pnl-main { margin-left: 0; }
  .pnl-menu-btn { display: flex; }
  .pnl-upload-form { grid-template-columns: 1fr; }
}