:root {
  /* Apple-inspired Professional Palette */
  --color-paper: #f5f5f7;        /* Apple Pearl Background */
  --color-surface: #ffffff;      /* Pure White Surface */
  --color-ink: #1d1d1f;          /* Apple Jet Black */
  --color-secondary: #86868b;    /* Apple Grey */
  --color-accent: #0071e3;       /* Apple Blue */
  --color-border: rgba(0, 0, 0, 0.08);
  
  /* Glassmorphism */
  --glass-bg: rgba(255, 255, 255, 0.72);
  --glass-blur: blur(20px) saturate(180%);
  
  /* Status Tones */
  --color-success: #34c759;
  --color-warning: #ff9f0a;
  --color-danger: #ff3b30;
  --color-info: #0071e3;
  --color-pending: #86868b;

  /* Typography */
  --font-serif: "Playfair Display", serif;
  --font-sans: "Inter", -apple-system, system-ui, sans-serif;

  /* Scale & Radius */
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 24px;             /* Professional Card Radius */
  --radius-xl: 38px;
  --page-max: 1200px;
  
  /* Depth */
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.04);
  --shadow-md: 0 12px 32px rgba(0, 0, 0, 0.08);
  --shadow-lg: 0 24px 64px rgba(0, 0, 0, 0.12);
  
  --transition: all 0.3s cubic-bezier(0.2, 1, 0.2, 1);
}

* { box-sizing: border-box; margin: 0; padding: 0; }

body {
  background-color: var(--color-paper);
  color: var(--color-ink);
  font-family: var(--font-sans);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  min-height: 100vh;
}

/* Typography Hub */
h1, h2, h3 { font-family: var(--font-serif); font-weight: 700; color: var(--color-ink); }
h1 { font-size: 3.5rem; letter-spacing: -0.02em; line-height: 1.1; }
h2 { font-size: 2.2rem; margin-bottom: 1.5rem; }
h3 { font-size: 1.5rem; }

p { color: var(--color-secondary); font-size: 1rem; }

.section-label {
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-secondary);
  margin-bottom: 0.5rem;
}

/* Navigation Shell */
.site-nav {
  position: sticky;
  top: 0;
  z-index: 1000;
  height: 64px;
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border-bottom: 1px solid var(--color-border);
  display: flex;
  align-items: center;
}

.nav-container {
  width: min(var(--page-max), 100% - 4rem);
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.brand-mark {
  font-size: 1rem;
  font-weight: 600;
  color: var(--color-ink);
  letter-spacing: -0.01em;
}

.nav-links { display: flex; gap: 2rem; }
.nav-link {
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--color-ink);
  opacity: 0.6;
  padding: 0.5rem 0;
  transition: var(--transition);
}
.nav-link:hover, .nav-link.active { opacity: 1; }

/* Layout Shell */
main {
  width: min(var(--page-max), 100% - 4rem);
  margin: 0 auto;
  padding: 4rem 0;
}

.shell-grid { display: grid; gap: 2rem; }

/* Component System: Panels */
.panel {
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  padding: 2.5rem;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--color-border);
  transition: var(--transition);
}

.panel:hover { box-shadow: var(--shadow-md); transform: translateY(-2px); }

/* Buttons: The Apple Way */
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.75rem 1.5rem;
  border-radius: 980px;
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  border: none;
  background: var(--color-ink);
  color: #fff;
  transition: var(--transition);
  text-decoration: none;
  font-family: inherit;
}

.button:hover { background: #333; transform: scale(1.02); }

.button-secondary {
  background: rgba(0, 113, 227, 0.1);
  color: var(--color-accent);
}

.button-secondary:hover { background: rgba(0, 113, 227, 0.15); }

.button-outline {
  background: transparent;
  border: 1px solid var(--color-border);
  color: var(--color-ink);
}

.button-outline:hover { background: rgba(0, 0, 0, 0.05); }

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

/* Status Hub */
.status-pill {
  font-size: 0.75rem;
  font-weight: 600;
  padding: 0.4rem 0.8rem;
  border-radius: 980px;
  background: rgba(0, 0, 0, 0.05);
  color: var(--color-secondary);
}

.status-under_review { background: rgba(0, 113, 227, 0.1); color: var(--color-accent); }
.status-approved, .status-success { background: rgba(52, 199, 89, 0.1); color: var(--color-success); }
.status-rejected { background: rgba(255, 59, 48, 0.1); color: var(--color-danger); }
.status-pending { background: rgba(255, 159, 10, 0.1); color: var(--color-warning); }

/* Cards & Grid Items */
.metric-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.5rem;
}

.metric-card {
  text-align: left;
  padding: 2rem;
}

.metric-card span {
  display: block;
  font-size: 3rem;
  font-weight: 700;
  color: var(--color-ink);
  margin-top: 0.5rem;
  letter-spacing: -0.03em;
}

/* Lists & Tables */
.item-card {
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: center;
  background: var(--color-surface);
  border-radius: var(--radius-md);
  padding: 1.5rem;
  border: 1px solid var(--color-border);
  transition: var(--transition);
}

.item-card:hover { transform: scale(1.01); box-shadow: var(--shadow-sm); z-index: 10; }

/* Specific Overrides for Submission Detail */
.dossier-layout {
  display: grid;
  grid-template-columns: 1fr 380px;
  gap: 2.5rem;
}

.meta-stack { display: grid; gap: 1.5rem; }
.meta-field {
  padding-bottom: 0.75rem;
  border-bottom: 1px solid var(--color-border);
}
.meta-field label { font-size: 0.7rem; color: var(--color-secondary); text-transform: uppercase; font-weight: 700; }
.meta-field div { font-size: 1.1rem; font-weight: 500; margin-top: 0.25rem; }

/* Responsive */
@media (max-width: 1024px) {
  .dossier-layout { grid-template-columns: 1fr; }
  h1 { font-size: 2.5rem; }
}