:root {
  --primary: #0f4c5c;
  --primary-dark: #0a3540;
  --primary-light: #e8f1f2;
  --accent: #e36414;
  --accent-dark: #c2530b;
  --success: #2e8b57;
  --danger: #c0392b;
  --bg: #f7f9f9;
  --card-bg: #ffffff;
  --text: #1b1b1e;
  --text-muted: #5c6b6f;
  --border: #dfe6e6;
  --radius: 10px;
  --shadow: 0 2px 10px rgba(15, 76, 92, 0.08);
  --shadow-lg: 0 8px 28px rgba(15, 76, 92, 0.14);
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: 'Segoe UI', system-ui, -apple-system, Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.5;
}

a { color: var(--primary); text-decoration: none; }
a:hover { color: var(--accent); }

.container {
  max-width: 1080px;
  margin: 0 auto;
  padding: 0 20px;
}

/* Navbar */
.navbar {
  background: var(--primary);
  color: #fff;
  box-shadow: var(--shadow);
}
.navbar .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 14px;
  padding-bottom: 14px;
}
.navbar .brand {
  font-size: 1.4rem;
  font-weight: 700;
  color: #fff;
  letter-spacing: 0.3px;
}
.navbar .brand span { color: var(--accent); }
.navbar nav a {
  color: #d9e6e8;
  margin-left: 18px;
  font-weight: 500;
  font-size: 0.95rem;
}
.navbar nav a:hover { color: #fff; }

/* Layout wrapper */
.page {
  min-height: calc(100vh - 140px);
  padding: 36px 0 60px;
}

/* Cards */
.card {
  background: var(--card-bg);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 28px;
  border: 1px solid var(--border);
}

.card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 18px;
  flex-wrap: wrap;
  gap: 10px;
}

.grid {
  display: grid;
  gap: 20px;
}
.grid-2 { grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); }
.grid-3 { grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); }

/* Forms */
.form-group { margin-bottom: 16px; }
label { display: block; font-weight: 600; font-size: 0.88rem; margin-bottom: 6px; color: var(--text); }
.hint { font-size: 0.8rem; color: var(--text-muted); margin-top: 4px; }

input[type=text], input[type=email], input[type=password], input[type=number],
input[type=tel], input[type=file], select, textarea {
  width: 100%;
  padding: 10px 12px;
  border: 1px solid var(--border);
  border-radius: 8px;
  font-size: 0.95rem;
  font-family: inherit;
  background: #fff;
  color: var(--text);
}
input:focus, select:focus, textarea:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(15,76,92,0.12);
}
textarea { resize: vertical; min-height: 90px; }

.checkbox-row { display: flex; align-items: center; gap: 8px; }
.checkbox-row input { width: auto; }

/* Buttons */
.btn {
  display: inline-block;
  padding: 10px 20px;
  border-radius: 8px;
  border: none;
  font-weight: 600;
  font-size: 0.92rem;
  cursor: pointer;
  text-align: center;
}
.btn-primary { background: var(--primary); color: #fff; }
.btn-primary:hover { background: var(--primary-dark); color: #fff; }
.btn-accent { background: var(--accent); color: #fff; }
.btn-accent:hover { background: var(--accent-dark); color: #fff; }
.btn-outline { background: transparent; border: 1px solid var(--primary); color: var(--primary); }
.btn-outline:hover { background: var(--primary-light); }
.btn-danger { background: var(--danger); color: #fff; }
.btn-sm { padding: 6px 12px; font-size: 0.82rem; }
.btn-block { width: 100%; }

/* Alerts */
.alert {
  padding: 12px 16px;
  border-radius: 8px;
  margin-bottom: 18px;
  font-size: 0.92rem;
}
.alert-success { background: #e5f6ec; color: var(--success); border: 1px solid #bfe6cd; }
.alert-error { background: #fdecea; color: var(--danger); border: 1px solid #f6c6c0; }
.alert-info { background: var(--primary-light); color: var(--primary-dark); border: 1px solid #c9dfe2; }

/* Badges */
.badge { display: inline-block; padding: 3px 10px; border-radius: 20px; font-size: 0.75rem; font-weight: 700; }
.badge-vacant { background: #e5f6ec; color: var(--success); }
.badge-occupied { background: #fdecea; color: var(--danger); }

/* Room card */
.room-card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px;
  box-shadow: var(--shadow);
}
.room-card h3 { margin: 0 0 4px; font-size: 1.05rem; }
.room-card .meta { color: var(--text-muted); font-size: 0.85rem; margin-bottom: 10px; }
.room-card .rent { font-size: 1.2rem; font-weight: 700; color: var(--accent); }
.room-actions { display: flex; gap: 8px; margin-top: 12px; flex-wrap: wrap; }

/* Auth pages */
.auth-wrap {
  max-width: 460px;
  margin: 50px auto;
}
.auth-wrap .card { }
.auth-wrap h1 { font-size: 1.5rem; margin-top: 0; text-align: center; color: var(--primary-dark); }
.auth-wrap .sub { text-align: center; color: var(--text-muted); margin-bottom: 24px; font-size: 0.9rem; }
.auth-links { text-align: center; margin-top: 16px; font-size: 0.88rem; }

/* Footer */
.footer {
  background: var(--primary-dark);
  color: #cfe0e2;
  text-align: center;
  padding: 18px 0;
  font-size: 0.85rem;
}

/* Photo gallery (owner edit view) */
.photo-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(90px, 1fr));
  gap: 8px;
  margin-bottom: 10px;
}
.photo-thumb {
  position: relative;
  aspect-ratio: 1 / 1;
  border-radius: 8px;
  overflow: hidden;
  border: 1px solid var(--border);
}
.photo-thumb img { width: 100%; height: 100%; object-fit: cover; display: block; }
.photo-remove {
  position: absolute;
  top: 4px; right: 4px;
  background: rgba(192,57,43,0.9);
  color: #fff;
  width: 22px; height: 22px;
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-size: 0.9rem; line-height: 1;
  text-decoration: none;
}
.photo-remove:hover { background: var(--danger); color: #fff; }

/* Public ad gallery strip */
.ad-gallery {
  display: flex;
  gap: 6px;
  overflow-x: auto;
  padding: 8px;
  background: #000;
}
.ad-gallery img {
  height: 160px;
  width: auto;
  border-radius: 6px;
  object-fit: cover;
  cursor: pointer;
  flex-shrink: 0;
}
.lightbox {
  display: none;
  position: fixed; inset: 0;
  background: rgba(0,0,0,0.9);
  z-index: 999;
  align-items: center;
  justify-content: center;
}
.lightbox.open { display: flex; }
.lightbox img { max-width: 92%; max-height: 88%; border-radius: 6px; }
.lightbox-close {
  position: absolute; top: 16px; right: 22px;
  color: #fff; font-size: 2rem; cursor: pointer; line-height: 1;
}

/* Public ad page */
.ad-page { max-width: 640px; margin: 0 auto; padding: 30px 16px 60px; }
.ad-header { text-align: center; margin-bottom: 24px; }
.ad-header .brand { font-weight: 700; color: var(--primary); font-size: 1.1rem; }
.ad-card { background: #fff; border-radius: 14px; box-shadow: var(--shadow-lg); overflow: hidden; border: 1px solid var(--border); }
.ad-card video { width: 100%; display: block; background: #000; max-height: 360px; }
.ad-body { padding: 22px; }
.ad-rent { font-size: 1.8rem; font-weight: 800; color: var(--accent); margin: 0 0 4px; }
.ad-title { font-size: 1.15rem; font-weight: 700; margin: 0 0 2px; }
.ad-loc { color: var(--text-muted); font-size: 0.9rem; margin-bottom: 16px; }
.ad-section { margin-top: 18px; }
.ad-section h4 { margin: 0 0 6px; font-size: 0.85rem; text-transform: uppercase; letter-spacing: 0.5px; color: var(--primary); }
.ad-contact { background: var(--primary-light); border-radius: 10px; padding: 14px 16px; margin-top: 20px; }
.unavailable { text-align: center; padding: 60px 20px; }
.unavailable h2 { color: var(--danger); }

/* Poster / print page */
.poster { max-width: 720px; margin: 30px auto; background: #fff; border: 3px solid var(--primary); border-radius: 20px; padding: 48px 40px; text-align: center; box-shadow: var(--shadow-lg); }
.poster-headline { font-weight: 800; font-size: 2rem; color: var(--primary-dark); line-height: 1.3; letter-spacing: 0.2px; }
.poster-floor { font-weight: 600; color: var(--text-muted); margin-top: 8px; font-size: 1.3rem; }
.poster-rent { font-size: 3rem; font-weight: 800; color: var(--accent); margin-top: 24px; }
.poster-constraints { display: inline-block; margin-top: 18px; font-weight: 700; font-size: 1.4rem; color: var(--primary-dark); background: var(--primary-light); border-radius: 24px; padding: 10px 28px; }
.poster .qr-box { margin: 36px auto 14px; }
.poster .qr-box img, .poster .qr-box canvas { width: 320px !important; height: 320px !important; max-width: 100%; }
.poster .scan-txt { font-weight: 700; color: var(--primary-dark); margin-top: 10px; font-size: 1.25rem; }
.poster-contact { margin-top: 30px; font-weight: 800; font-size: 1.8rem; letter-spacing: 0.3px; border-top: 2px dashed var(--border); padding-top: 24px; }
@media print {
  .no-print { display: none !important; }
  body { background: #fff; }
  @page { margin: 0.5cm; }
  .page, .container { padding: 0 !important; margin: 0 !important; max-width: none !important; }
  .poster {
    box-shadow: none;
    margin: 0 auto;
    max-width: 100%;
    width: 100%;
    min-height: 96vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    border-width: 4px;
    padding: 8% 6%;
  }
  .poster-headline { font-size: 2.6rem; }
  .poster-floor { font-size: 1.6rem; }
  .poster-rent { font-size: 4rem; }
  .poster-constraints { font-size: 1.8rem; padding: 14px 34px; }
  .poster .qr-box img, .poster .qr-box canvas { width: 380px !important; height: 380px !important; }
  .poster .scan-txt { font-size: 1.5rem; }
  .poster-contact { font-size: 2.4rem; }
}

/* Table */
table.simple { width: 100%; border-collapse: collapse; }
table.simple th, table.simple td { text-align: left; padding: 10px 8px; border-bottom: 1px solid var(--border); font-size: 0.9rem; }
table.simple th { color: var(--text-muted); font-weight: 600; font-size: 0.8rem; text-transform: uppercase; }

.map-link { font-size: 0.85rem; }

@media (max-width: 600px) {
  .navbar .container { flex-direction: column; gap: 8px; }
  .navbar nav a { margin: 0 8px; }
}