/* === DESIGN TOKENS === */
:root, [data-theme="light"] {
  --text-xs:   clamp(0.75rem,  0.7rem  + 0.25vw, 0.875rem);
  --text-sm:   clamp(0.875rem, 0.8rem  + 0.35vw, 1rem);
  --text-base: clamp(1rem,     0.95rem + 0.25vw, 1.125rem);
  --text-lg:   clamp(1.125rem, 1rem    + 0.75vw, 1.5rem);
  --text-xl:   clamp(1.5rem,   1.2rem  + 1.25vw, 2.25rem);

  --space-1:  0.25rem;
  --space-2:  0.5rem;
  --space-3:  0.75rem;
  --space-4:  1rem;
  --space-5:  1.25rem;
  --space-6:  1.5rem;
  --space-8:  2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;

  --font-display: 'Cabinet Grotesk', 'Helvetica Neue', sans-serif;
  --font-body: 'Satoshi', 'Inter', sans-serif;

  /* Palette — DHM-inspired: deep navy surfaces, warm amber accent */
  --color-bg:             #f5f6f8;
  --color-surface:        #ffffff;
  --color-surface-2:      #f0f1f4;
  --color-border:         #dfe1e6;
  --color-divider:        #e8eaed;
  --color-text:           #1a1d26;
  --color-text-muted:     #6b7280;
  --color-text-faint:     #9ca3af;
  --color-text-inverse:   #ffffff;
  --color-primary:        #1e3a5f;
  --color-primary-hover:  #15294a;
  --color-accent:         #e89430;
  --color-accent-hover:   #d17e1a;
  --color-accent-soft:    #fef3e2;

  /* Category colors */
  --cat-scheduling:  #2563eb;
  --cat-billing:     #059669;
  --cat-reporting:   #7c3aed;
  --cat-pricing:     #e89430;
  --cat-editing:     #ec4899;
  --cat-office:      #0891b2;
  --cat-marketing:   #dc2626;
  --cat-hr:          #6366f1;

  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  --radius-full: 9999px;
  --transition-interactive: 180ms cubic-bezier(0.16, 1, 0.3, 1);
  --shadow-sm: 0 1px 2px rgba(0,0,0,0.05);
  --shadow-md: 0 4px 12px rgba(0,0,0,0.07);
  --shadow-lg: 0 12px 32px rgba(0,0,0,0.10);
}

[data-theme="dark"] {
  --color-bg:             #0f1117;
  --color-surface:        #1a1d28;
  --color-surface-2:      #242838;
  --color-border:         #2e3348;
  --color-divider:        #262a3a;
  --color-text:           #e2e4ea;
  --color-text-muted:     #8b90a0;
  --color-text-faint:     #5c6070;
  --color-text-inverse:   #ffffff;
  --color-primary:        #5b8abf;
  --color-primary-hover:  #4a78ad;
  --color-accent:         #f0a84c;
  --color-accent-hover:   #e89430;
  --color-accent-soft:    #2a2218;

  --cat-scheduling:  #60a5fa;
  --cat-billing:     #34d399;
  --cat-reporting:   #a78bfa;
  --cat-pricing:     #f0a84c;
  --cat-editing:     #f472b6;
  --cat-office:      #22d3ee;
  --cat-marketing:   #f87171;
  --cat-hr:          #818cf8;

  --shadow-sm: 0 1px 2px rgba(0,0,0,0.2);
  --shadow-md: 0 4px 12px rgba(0,0,0,0.3);
  --shadow-lg: 0 12px 32px rgba(0,0,0,0.4);
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme]) {
    --color-bg:             #0f1117;
    --color-surface:        #1a1d28;
    --color-surface-2:      #242838;
    --color-border:         #2e3348;
    --color-divider:        #262a3a;
    --color-text:           #e2e4ea;
    --color-text-muted:     #8b90a0;
    --color-text-faint:     #5c6070;
    --color-text-inverse:   #ffffff;
    --color-primary:        #5b8abf;
    --color-primary-hover:  #4a78ad;
    --color-accent:         #f0a84c;
    --color-accent-hover:   #e89430;
    --color-accent-soft:    #2a2218;
    --cat-scheduling:  #60a5fa;
    --cat-billing:     #34d399;
    --cat-reporting:   #a78bfa;
    --cat-pricing:     #f0a84c;
    --cat-editing:     #f472b6;
    --cat-office:      #22d3ee;
    --cat-marketing:   #f87171;
    --cat-hr:          #818cf8;
    --shadow-sm: 0 1px 2px rgba(0,0,0,0.2);
    --shadow-md: 0 4px 12px rgba(0,0,0,0.3);
    --shadow-lg: 0 12px 32px rgba(0,0,0,0.4);
  }
}

/* === BASE RESET === */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html {
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  scroll-behavior: smooth;
}
body {
  min-height: 100dvh;
  line-height: 1.6;
  font-family: var(--font-body);
  font-size: var(--text-base);
  color: var(--color-text);
  background-color: var(--color-bg);
}
img, svg { display: block; max-width: 100%; }
button { cursor: pointer; background: none; border: none; font: inherit; color: inherit; }
a { color: inherit; text-decoration: none; }
input { font: inherit; color: inherit; }

a, button, input {
  transition: color var(--transition-interactive),
              background var(--transition-interactive),
              border-color var(--transition-interactive),
              box-shadow var(--transition-interactive),
              transform var(--transition-interactive);
}
:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 3px;
  border-radius: var(--radius-sm);
}

/* === HEADER === */
.header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  backdrop-filter: blur(12px);
}
.header-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: var(--space-4) var(--space-6);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
}
.logo {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}
.logo-text {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: var(--text-lg);
  color: var(--color-text);
}
.header-right {
  display: flex;
  align-items: center;
  gap: var(--space-4);
}
.header-label {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  font-weight: 500;
}
[data-theme-toggle] {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-md);
  color: var(--color-text-muted);
}
[data-theme-toggle]:hover {
  background: var(--color-surface-2);
  color: var(--color-text);
}

/* === MAIN === */
.main {
  max-width: 1200px;
  margin: 0 auto;
  padding: var(--space-8) var(--space-6) var(--space-16);
}

/* === CATEGORY NAV === */
.category-nav {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin-bottom: var(--space-6);
}
.cat-btn {
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-full);
  font-size: var(--text-sm);
  font-weight: 500;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  color: var(--color-text-muted);
  white-space: nowrap;
}
.cat-btn:hover {
  background: var(--color-surface-2);
  color: var(--color-text);
  border-color: var(--color-text-faint);
}
.cat-btn.active {
  background: var(--color-primary);
  color: var(--color-text-inverse);
  border-color: var(--color-primary);
}

/* === SEARCH === */
.search-bar {
  position: relative;
  margin-bottom: var(--space-8);
}
.search-icon {
  position: absolute;
  left: var(--space-4);
  top: 50%;
  transform: translateY(-50%);
  color: var(--color-text-faint);
  pointer-events: none;
}
#search {
  width: 100%;
  padding: var(--space-3) var(--space-4) var(--space-3) calc(var(--space-4) + 26px);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  background: var(--color-surface);
  font-size: var(--text-sm);
  color: var(--color-text);
}
#search::placeholder { color: var(--color-text-faint); }
#search:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(30, 58, 95, 0.12);
}

/* === GRID === */
.grid {
  display: grid;
  gap: var(--space-8);
}

/* === CATEGORY SECTION === */
.category-section {
  animation: fadeUp 0.3s ease both;
}
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(12px); }
  to { opacity: 1; transform: translateY(0); }
}
.category-header {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  margin-bottom: var(--space-4);
  padding-bottom: var(--space-3);
  border-bottom: 2px solid var(--color-divider);
}
.category-dot {
  width: 10px;
  height: 10px;
  border-radius: var(--radius-full);
  flex-shrink: 0;
}
.category-title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: var(--text-lg);
  color: var(--color-text);
}
.category-count {
  font-size: var(--text-xs);
  color: var(--color-text-faint);
  font-weight: 500;
  margin-left: auto;
}

/* === LINK CARDS === */
.links-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: var(--space-3);
}
.link-card {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-3) var(--space-4);
  border-radius: var(--radius-lg);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  text-decoration: none;
  color: var(--color-text);
}
.link-card:hover {
  border-color: var(--color-primary);
  box-shadow: var(--shadow-md);
  transform: translateY(-1px);
}
.link-icon {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  font-size: var(--text-sm);
  font-weight: 700;
  color: #fff;
}
.link-card-body {
  min-width: 0;
}
.link-name {
  font-size: var(--text-sm);
  font-weight: 500;
  line-height: 1.35;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.link-type {
  font-size: var(--text-xs);
  color: var(--color-text-faint);
  line-height: 1.3;
}
.link-arrow {
  margin-left: auto;
  flex-shrink: 0;
  color: var(--color-text-faint);
  transition: transform var(--transition-interactive), color var(--transition-interactive);
}
.link-card:hover .link-arrow {
  color: var(--color-primary);
  transform: translateX(2px);
}

/* === EMPTY STATE === */
.empty-state {
  text-align: center;
  padding: var(--space-16) var(--space-4);
  color: var(--color-text-muted);
  font-size: var(--text-sm);
}

/* === LOGIN GATE === */
.login-gate {
  position: fixed;
  inset: 0;
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-bg);
  padding: var(--space-4);
}
.login-card {
  width: 100%;
  max-width: 400px;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
}
.login-card svg:first-child {
  width: 48px;
  height: 48px;
  margin-bottom: var(--space-6);
}
.login-title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: var(--text-xl);
  color: var(--color-text);
  margin-bottom: var(--space-2);
}
.login-subtitle {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  margin-bottom: var(--space-8);
  line-height: 1.5;
}
.login-form {
  width: 100%;
}
.login-input-wrap {
  position: relative;
  display: flex;
  align-items: center;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: border-color var(--transition-interactive), box-shadow var(--transition-interactive);
}
.login-input-wrap:focus-within {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(30, 58, 95, 0.12);
}
.login-lock-icon {
  position: absolute;
  left: var(--space-4);
  color: var(--color-text-faint);
  pointer-events: none;
  flex-shrink: 0;
}
.login-input {
  flex: 1;
  padding: var(--space-4) var(--space-4) var(--space-4) calc(var(--space-4) + 28px);
  border: none;
  background: transparent;
  font-size: var(--text-base);
  color: var(--color-text);
  outline: none;
}
.login-input::placeholder {
  color: var(--color-text-faint);
}
.login-submit {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  flex-shrink: 0;
  background: var(--color-primary);
  color: var(--color-text-inverse);
  border: none;
  border-radius: 0;
  cursor: pointer;
  transition: background var(--transition-interactive);
}
.login-submit:hover {
  background: var(--color-primary-hover);
}
.login-error {
  margin-top: var(--space-3);
  font-size: var(--text-sm);
  color: #dc2626;
  animation: shake 0.4s ease;
}
@keyframes shake {
  0%, 100% { transform: translateX(0); }
  20%, 60% { transform: translateX(-6px); }
  40%, 80% { transform: translateX(6px); }
}
.login-gate.fade-out {
  animation: fadeOut 0.35s ease forwards;
}
@keyframes fadeOut {
  to { opacity: 0; pointer-events: none; }
}

/* === LOGOUT BTN === */
.logout-btn {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-md);
  color: var(--color-text-muted);
}
.logout-btn:hover {
  background: var(--color-surface-2);
  color: var(--color-text);
}

/* === RESPONSIVE === */
@media (max-width: 640px) {
  .header-label { display: none; }
  .header-inner { padding: var(--space-3) var(--space-4); }
  .main { padding: var(--space-6) var(--space-4) var(--space-12); }
  .links-grid { grid-template-columns: 1fr; }
  .category-nav { gap: var(--space-1); }
  .cat-btn { padding: var(--space-1) var(--space-3); font-size: var(--text-xs); }
}