/* ==========================================================================
   AI Hub Portal Design System (McKinsey Light/Dark Dynamic Blend)
   ========================================================================== */

:root {
  /* Font Family */
  --font-sans: 'Outfit', 'Noto Sans SC', sans-serif;

  /* HSL Colors - Light Mode Defaults */
  --bg-h: 220;
  --bg-s: 15%;
  --bg-l: 96%;
  --bg: hsl(var(--bg-h), var(--bg-s), var(--bg-l));
  
  --ink-h: 220;
  --ink-s: 30%;
  --ink-l: 15%;
  --ink: hsl(var(--ink-h), var(--ink-s), var(--ink-l));

  --sub-h: 220;
  --sub-s: 15%;
  --sub-l: 45%;
  --sub: hsl(var(--sub-h), var(--sub-s), var(--sub-l));

  --blue-h: 215;
  --blue-s: 60%;
  --blue-l: 35%;
  --blue: hsl(var(--blue-h), var(--blue-s), var(--blue-l));
  
  --blue-glow: hsla(var(--blue-h), var(--blue-s), 50%, 0.15);

  --card-bg: rgba(255, 255, 255, 0.7);
  --card-border: rgba(226, 232, 240, 0.8);
  
  --green: #276749;
  --green-glow: rgba(39, 103, 73, 0.2);
  --yellow: #b7791f;
  --red: #c53030;
  
  --glow-1: rgba(49, 130, 206, 0.15);
  --glow-2: rgba(128, 90, 213, 0.15);

  --shadow: 0 8px 32px 0 rgba(31, 38, 135, 0.05);
  --blur: 16px;
}

[data-theme="dark"] {
  /* HSL Colors - Dark Mode Override */
  --bg-h: 224;
  --bg-s: 25%;
  --bg-l: 8%;
  --bg: hsl(var(--bg-h), var(--bg-s), var(--bg-l));

  --ink-h: 210;
  --ink-s: 20%;
  --ink-l: 95%;
  --ink: hsl(var(--ink-h), var(--ink-s), var(--ink-l));

  --sub-h: 215;
  --sub-s: 15%;
  --sub-l: 70%;
  --sub: hsl(var(--sub-h), var(--sub-s), var(--sub-l));

  --blue-h: 210;
  --blue-s: 85%;
  --blue-l: 65%;
  --blue: hsl(var(--blue-h), var(--blue-s), var(--blue-l));
  
  --blue-glow: hsla(var(--blue-h), var(--blue-s), var(--blue-l), 0.2);

  --card-bg: rgba(15, 22, 36, 0.6);
  --card-border: rgba(255, 255, 255, 0.08);

  --green: #48bb78;
  --green-glow: rgba(72, 187, 120, 0.3);
  --yellow: #ecc94b;
  
  --glow-1: rgba(31, 111, 235, 0.12);
  --glow-2: rgba(159, 122, 234, 0.12);

  --shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.4);
}

/* ==========================================================================
   Base Layout
   ========================================================================== */

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  transition: background-color 0.3s ease, border-color 0.3s ease;
}

body {
  background-color: var(--bg);
  color: var(--ink);
  font-family: var(--font-sans);
  min-height: 100vh;
  display: flex;
  justify-content: center;
  align-items: flex-start;
  overflow-x: hidden;
  position: relative;
}

/* Dynamic background glow blobs */
.bg-glow {
  position: absolute;
  width: 50vw;
  height: 50vw;
  max-width: 600px;
  max-height: 600px;
  border-radius: 50%;
  filter: blur(120px);
  z-index: 0;
  pointer-events: none;
  animation: float 20s infinite alternate ease-in-out;
}

.bg-glow-1 {
  background: var(--glow-1);
  top: -10%;
  left: -10%;
}

.bg-glow-2 {
  background: var(--glow-2);
  bottom: -10%;
  right: -10%;
  animation-delay: -10s;
}

@keyframes float {
  0% { transform: translate(0, 0) scale(1); }
  100% { transform: translate(8%, 10%) scale(1.15); }
}

/* Container */
.app-container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 60px 24px;
  z-index: 1;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

/* ==========================================================================
   Header Elements
   ========================================================================== */

.app-header {
  margin-bottom: 48px;
}

.logo-area {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 8px;
}

.logo-icon {
  font-size: 28px;
  color: var(--blue);
  text-shadow: 0 0 16px var(--blue-glow);
  animation: pulseLogo 3s infinite ease-in-out;
}

@keyframes pulseLogo {
  0%, 100% { transform: scale(1); opacity: 0.9; }
  50% { transform: scale(1.1) rotate(10deg); opacity: 1; }
}

.logo-area h1 {
  font-size: 32px;
  font-weight: 700;
  letter-spacing: -0.5px;
}

.subtitle {
  color: var(--sub);
  font-size: 15.5px;
  font-weight: 300;
  margin-bottom: 28px;
}

/* Controls (Search, Theme Toggle) */
.controls {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 24px;
}

.search-bar {
  display: flex;
  align-items: center;
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  backdrop-filter: blur(var(--blur));
  -webkit-backdrop-filter: blur(var(--blur));
  border-radius: 30px;
  padding: 6px 18px;
  width: 100%;
  max-width: 420px;
  box-shadow: var(--shadow);
  position: relative;
}

.search-icon {
  font-size: 16px;
  color: var(--sub);
  margin-right: 10px;
}

.search-bar input {
  background: transparent;
  border: none;
  outline: none;
  color: var(--ink);
  font-family: var(--font-sans);
  font-size: 14px;
  width: 100%;
}

.search-bar input::placeholder {
  color: var(--sub);
  opacity: 0.7;
}

.clear-btn {
  background: transparent;
  border: none;
  color: var(--sub);
  font-size: 18px;
  cursor: pointer;
  padding: 0 4px;
}

/* Theme Toggle Button */
.theme-btn {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  backdrop-filter: blur(var(--blur));
  -webkit-backdrop-filter: blur(var(--blur));
  border-radius: 50%;
  width: 42px;
  height: 42px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  box-shadow: var(--shadow);
  color: var(--ink);
}

.theme-btn:hover {
  transform: translateY(-2px);
  border-color: var(--blue);
}

.theme-btn .sun-icon { display: none; }
.theme-btn .moon-icon { display: block; }

[data-theme="dark"] .theme-btn .sun-icon { display: block; }
[data-theme="dark"] .theme-btn .moon-icon { display: none; }

/* Category Tags */
.tags-container {
  display: flex;
  gap: 10px;
  overflow-x: auto;
  padding-bottom: 6px;
}

.tag-btn {
  background: transparent;
  border: 1px solid var(--card-border);
  color: var(--sub);
  padding: 6px 16px;
  border-radius: 20px;
  cursor: pointer;
  font-size: 13px;
  font-weight: 600;
  white-space: nowrap;
}

.tag-btn.active, .tag-btn:hover {
  background: var(--blue);
  color: #fff;
  border-color: var(--blue);
  box-shadow: 0 4px 12px var(--blue-glow);
}

/* ==========================================================================
   App Cards Grid
   ========================================================================== */

.app-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 24px;
  margin-bottom: 60px;
}

.app-card {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  backdrop-filter: blur(var(--blur));
  -webkit-backdrop-filter: blur(var(--blur));
  border-radius: 16px;
  padding: 24px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  box-shadow: var(--shadow);
  position: relative;
  overflow: hidden;
  min-height: 220px;
  transition: transform 0.4s cubic-bezier(0.165, 0.84, 0.44, 1), box-shadow 0.4s cubic-bezier(0.165, 0.84, 0.44, 1);
}

/* Hover glowing background card effect */
.card-glow {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: radial-gradient(circle at 10% 20%, var(--blue-glow) 0%, transparent 50%);
  opacity: 0;
  transition: opacity 0.5s ease;
  pointer-events: none;
  z-index: 0;
}

.app-card:hover:not(.disabled) {
  transform: translateY(-6px) scale(1.01);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15);
  border-color: var(--blue);
}

.app-card:hover .card-glow {
  opacity: 1;
}

/* Card Header */
.card-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 20px;
  z-index: 1;
}

.app-icon {
  font-size: 32px;
  background: var(--blue-glow);
  width: 54px;
  height: 54px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 12px;
}

/* Status Indicator */
.app-status {
  display: flex;
  align-items: center;
  gap: 6px;
  background: rgba(0, 0, 0, 0.05);
  padding: 4px 10px;
  border-radius: 20px;
  font-size: 11.5px;
  font-weight: 600;
  color: var(--sub);
  border: 1px solid var(--card-border);
}

[data-theme="dark"] .app-status {
  background: rgba(255, 255, 255, 0.05);
}

.status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
}

.status-dot.pulsing {
  background-color: var(--green);
  box-shadow: 0 0 0 0 var(--green-glow);
  animation: pulseGreen 2s infinite;
}

.status-dot.offline {
  background-color: var(--red);
  box-shadow: none;
  animation: none;
}

.status-dot.idle {
  background-color: var(--yellow);
}

@keyframes pulseGreen {
  0% { transform: scale(0.95); box-shadow: 0 0 0 0 var(--green-glow); }
  70% { transform: scale(1); box-shadow: 0 0 0 8px rgba(72, 187, 120, 0); }
  100% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(72, 187, 120, 0); }
}

/* Card Body */
.card-body {
  margin-bottom: 24px;
  z-index: 1;
}

.card-body h3 {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 8px;
}

.description {
  color: var(--sub);
  font-size: 13.5px;
  line-height: 1.6;
  margin-bottom: 16px;
}

/* Tags within card */
.card-tags {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
}

.card-tag {
  background: rgba(0, 0, 0, 0.03);
  color: var(--sub);
  font-size: 11px;
  padding: 2px 8px;
  border-radius: 4px;
  font-weight: 600;
}

[data-theme="dark"] .card-tag {
  background: rgba(255, 255, 255, 0.05);
}

/* Card Footer & Launch Button */
.card-footer {
  margin-top: auto;
  z-index: 1;
}

.launch-btn {
  display: inline-flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  background: var(--blue);
  color: #fff;
  text-decoration: none;
  padding: 10px 18px;
  border-radius: 8px;
  font-size: 13px;
  font-weight: 600;
  box-shadow: 0 4px 14px var(--blue-glow);
}

.launch-btn .arrow {
  transition: transform 0.2s ease;
}

.app-card:hover .launch-btn .arrow {
  transform: translateX(4px);
}

/* Disabled/Upcoming Card State */
.app-card.disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

.app-card.disabled .launch-btn {
  background: rgba(0, 0, 0, 0.1);
  color: var(--sub);
  box-shadow: none;
  cursor: not-allowed;
  justify-content: center;
}

[data-theme="dark"] .app-card.disabled .launch-btn {
  background: rgba(255, 255, 255, 0.05);
}

/* ==========================================================================
   Footer
   ========================================================================== */

.app-footer {
  text-align: center;
  color: var(--sub);
  font-size: 12px;
  margin-top: auto;
  border-top: 1px solid var(--card-border);
  padding-top: 24px;
}