/* The Final Key — Design System
 * AWS Student Builder Group | DY Patil International University (DYPIU)
 * Theme: Techy Minimalist — Obsidian Black, AWS Orange (#FF9900), and Cyber Purple (#8B5CF6)
 */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800;900&family=JetBrains+Mono:wght@500;700;800&display=swap');

:root {
  /* Colors — Deep Navy/Black Canvas System (AWS-SBG Visual Identity) */
  --bg-deep: #060B14;
  --bg-card: #0A1220;
  --bg-card-elevated: #0F1A2E;
  --bg-surface-hover: #15243F;
  
  --border-subtle: #172640;
  --border-light: #22375C;
  --border-glow-orange: rgba(255, 153, 0, 0.4);
  --border-glow-purple: rgba(139, 92, 246, 0.4);

  /* AWS Orange Brand */
  --orange-primary: #FF9900;
  --orange-bright: #FFB347;
  --orange-dark: #D47A00;
  --orange-dim: rgba(255, 153, 0, 0.12);
  --orange-glow: 0 0 24px rgba(255, 153, 0, 0.25);

  /* Cyber Purple Accents */
  --purple-primary: #8B5CF6;
  --purple-bright: #A78BFA;
  --purple-dark: #6D28D9;
  --purple-dim: rgba(139, 92, 246, 0.14);
  --purple-glow: 0 0 24px rgba(139, 92, 246, 0.25);

  /* Neutrals & Text */
  --text-white: #FFFFFF;
  --text-muted: #94A3B8;
  --text-subtle: #64748B;
  --text-dim: #334155;

  /* Status Colors */
  --status-green: #00E676;
  --status-green-dim: rgba(0, 230, 118, 0.14);
  --status-red: #FF3344;
  --status-red-dim: rgba(255, 51, 68, 0.14);
  --status-amber: #FFB703;

  /* Typography */
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --font-mono: 'JetBrains Mono', "Courier New", monospace;

  /* Geometry & Radii */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 18px;

  /* Grid */
  --grid-line: rgba(255, 153, 0, 0.045);
}

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

html, body {
  background-color: var(--bg-deep);
  color: var(--text-white);
  font-family: var(--font-sans);
  min-height: 100vh;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Subtle Technical Blueprint Grid (PRD Section 1) */
body::before {
  content: "";
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-image: 
    linear-gradient(to right, var(--grid-line) 1px, transparent 1px),
    linear-gradient(to bottom, var(--grid-line) 1px, transparent 1px);
  background-size: 36px 36px;
  pointer-events: none;
  z-index: 0;
}

/* AWS Orange Geometric Pixel Nodes across canvas grid */
body::after {
  content: "";
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-image: 
    radial-gradient(circle 2px at 36px 36px, rgba(255, 153, 0, 0.22) 2px, transparent 0),
    radial-gradient(circle 1.5px at 144px 144px, rgba(255, 153, 0, 0.45) 1.5px, transparent 0);
  background-size: 144px 144px;
  pointer-events: none;
  z-index: 0;
}

/* Stark White Sans-Serif Headings */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-sans);
  color: #FFFFFF !important;
  font-weight: 800;
  letter-spacing: -0.015em;
  text-transform: uppercase;
}

/* Base Container */
.app-shell {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

/* Header Navbar */
.site-header {
  border-bottom: 1px solid var(--border-subtle);
  background: rgba(5, 7, 11, 0.92);
  backdrop-filter: blur(12px);
  position: sticky;
  top: 0;
  z-index: 50;
  padding: 0.75rem 1.5rem;
}

.header-container {
  max-width: 1400px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.brand-group {
  display: flex;
  align-items: center;
  gap: 0.85rem;
  text-decoration: none;
  color: inherit;
}

.brand-icon-block {
  width: 36px;
  height: 36px;
  background: #111722;
  border: 1.5px solid rgba(255, 153, 0, 0.45);
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-sm);
  box-shadow: 0 0 16px rgba(255, 153, 0, 0.25);
  overflow: hidden;
  flex-shrink: 0;
}

.brand-icon-block img,
.brand-logo-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.brand-icon-block svg {
  width: 18px;
  height: 18px;
  color: #000;
}

.brand-text {
  display: flex;
  flex-direction: column;
}

.brand-title {
  font-size: 1.05rem;
  font-weight: 800;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--text-white);
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

.brand-badge {
  font-size: 0.65rem;
  padding: 2px 6px;
  background: var(--purple-dim);
  color: var(--purple-bright);
  border: 1px solid var(--purple-dark);
  border-radius: var(--radius-sm);
  font-family: var(--font-mono);
  font-weight: 700;
}

.brand-subtitle {
  font-size: 0.72rem;
  color: var(--text-muted);
  font-family: var(--font-mono);
  letter-spacing: 0.02em;
}

/* Header Telemetry Pills */
.header-telemetry {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.telemetry-pill {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  padding: 4px 10px;
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  color: var(--text-muted);
}

.telemetry-pill.accent-purple {
  border-color: rgba(139, 92, 246, 0.35);
  color: var(--purple-bright);
  background: var(--purple-dim);
}

.pulse-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--status-green);
  box-shadow: 0 0 8px var(--status-green);
  animation: pulseGreen 2s infinite;
}

.pulse-dot.pulse-orange {
  background: var(--orange-primary);
  box-shadow: 0 0 8px var(--orange-primary);
  animation: pulseOrange 2s infinite;
}

@keyframes pulseGreen {
  0% { transform: scale(0.9); opacity: 0.7; }
  50% { transform: scale(1.15); opacity: 1; }
  100% { transform: scale(0.9); opacity: 0.7; }
}

@keyframes pulseOrange {
  0% { transform: scale(0.9); opacity: 0.7; }
  50% { transform: scale(1.15); opacity: 1; }
  100% { transform: scale(0.9); opacity: 0.7; }
}

/* Nav Links */
.nav-links {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.nav-item {
  color: var(--text-muted);
  text-decoration: none;
  font-size: 0.82rem;
  font-weight: 600;
  padding: 6px 12px;
  border-radius: var(--radius-sm);
  transition: all 0.2s ease;
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

.nav-item:hover, .nav-item.active {
  color: var(--text-white);
  background: var(--bg-card-elevated);
  border-bottom: 2px solid var(--orange-primary);
}

/* Main Content Area */
.main-viewport {
  flex: 1;
  max-width: 1400px;
  width: 100%;
  margin: 0 auto;
  padding: 1.5rem;
  position: relative;
}

/* AWS Orange Geometric Pixel-Blocks Component */
.pixel-block-cluster {
  display: inline-grid;
  grid-template-columns: repeat(4, 5px);
  grid-template-rows: repeat(3, 5px);
  gap: 2.5px;
  line-height: 0;
  vertical-align: middle;
  padding: 2px 4px;
}

.pixel-block-node {
  width: 5px;
  height: 5px;
  background: var(--orange-primary);
  border-radius: 1px;
  display: block;
}

.pixel-block-node.o-100 { opacity: 1; }
.pixel-block-node.o-70 { opacity: 0.7; }
.pixel-block-node.o-40 { opacity: 0.4; }
.pixel-block-node.o-20 { opacity: 0.2; }
.pixel-block-node.o-0 { opacity: 0; }

/* Footer Bar hidden as requested */
.site-footer {
  display: none !important;
}

.footer-container {
  max-width: 1400px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
}

.footer-chip-brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.microchip-icon {
  width: 26px;
  height: 26px;
  color: #060B14 !important;
  stroke: #060B14 !important;
  stroke-width: 2.2 !important;
}

.footer-meta {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  font-weight: 800;
  color: #060B14 !important;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.footer-meta span.highlight {
  color: #000000 !important;
  background: rgba(255, 255, 255, 0.4);
  padding: 2px 7px;
  border-radius: var(--radius-sm);
  font-weight: 900;
}

.footer-meta span.purple-highlight {
  color: #2E1065 !important;
  font-weight: 900;
}

.footer-status-pill {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 800;
  color: #060B14 !important;
  background: rgba(6, 11, 20, 0.12) !important;
  border: 1.5px solid rgba(6, 11, 20, 0.3) !important;
  padding: 5px 14px;
  border-radius: 50px;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  letter-spacing: 0.04em;
}

.footer-status-pill span {
  color: #060B14 !important;
}

.footer-status-pill .pulse-dot {
  background: #060B14 !important;
  box-shadow: 0 0 6px #060B14 !important;
}

/* Card System */
.tech-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  position: relative;
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.4);
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.tech-card:hover {
  border-color: var(--border-light);
}

.tech-card.accent-orange {
  border-left: 4px solid var(--orange-primary);
}

.tech-card.accent-purple {
  border-left: 4px solid var(--purple-primary);
}

.card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1.25rem;
  padding-bottom: 0.75rem;
  border-bottom: 1px solid var(--border-subtle);
}

.card-title-group {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.card-title {
  font-size: 1rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.03em;
  color: var(--text-white);
}

.card-tag {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  padding: 2px 6px;
  background: var(--orange-dim);
  color: var(--orange-primary);
  border: 1px solid rgba(255, 153, 0, 0.25);
  border-radius: var(--radius-sm);
  font-weight: 700;
}

.card-tag.tag-purple {
  background: var(--purple-dim);
  color: var(--purple-bright);
  border-color: rgba(139, 92, 246, 0.25);
}

.card-tag.tag-dq {
  background: rgba(255, 51, 68, 0.12);
  color: #FF4D5E;
  border-color: rgba(255, 51, 68, 0.35);
  letter-spacing: 0.04em;
}

.card-tag.tag-green {
  background: var(--status-green-dim);
  color: var(--status-green);
  border-color: rgba(0, 230, 118, 0.3);
}

.btn-xs {
  min-height: 28px !important;
  padding: 3px 8px !important;
  font-size: 0.72rem !important;
}

.btn-dq-action {
  background: rgba(255, 51, 68, 0.1);
  color: #FF5E6E;
  border: 1px solid rgba(255, 51, 68, 0.3);
}

.btn-dq-action:hover:not(:disabled) {
  background: #FF3344;
  color: #fff;
  border-color: #FF3344;
}

.btn-reinstate-action {
  background: rgba(139, 92, 246, 0.12);
  color: var(--purple-bright);
  border: 1px solid rgba(139, 92, 246, 0.35);
}

.btn-reinstate-action:hover:not(:disabled) {
  background: var(--purple-primary);
  color: #fff;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  font-family: var(--font-sans);
  font-size: 0.875rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  padding: 0.65rem 1.25rem;
  border-radius: var(--radius-md);
  border: 1px solid transparent;
  cursor: pointer;
  transition: all 0.2s cubic-bezier(0.16, 1, 0.3, 1);
  text-decoration: none;
  min-height: 44px;
}

.btn:active {
  transform: scale(0.98);
}

.btn:disabled {
  opacity: 0.45;
  cursor: not-allowed;
  transform: none;
}

/* AWS Orange Primary Button */
.btn-orange {
  background: var(--orange-primary);
  color: #000;
  border-color: var(--orange-primary);
  box-shadow: 0 0 16px rgba(255, 153, 0, 0.3);
}

.btn-orange:hover:not(:disabled) {
  background: var(--orange-bright);
  box-shadow: 0 0 24px rgba(255, 153, 0, 0.5);
  color: #000;
}

/* Tech Purple Button */
.btn-purple {
  background: var(--purple-primary);
  color: #fff;
  border-color: var(--purple-primary);
  box-shadow: 0 0 16px rgba(139, 92, 246, 0.3);
}

.btn-purple:hover:not(:disabled) {
  background: var(--purple-bright);
  box-shadow: 0 0 24px rgba(139, 92, 246, 0.5);
}

/* Success Green Button */
.btn-success {
  background: var(--status-green);
  color: #000;
  border-color: var(--status-green);
  box-shadow: 0 0 16px rgba(0, 230, 118, 0.3);
}

.btn-success:hover:not(:disabled) {
  background: #33ff88;
  box-shadow: 0 0 24px rgba(0, 230, 118, 0.5);
}

/* Ghost / Secondary Button */
.btn-ghost {
  background: transparent;
  color: var(--text-white);
  border: 1px solid var(--border-light);
}

.btn-ghost:hover:not(:disabled) {
  background: var(--bg-card-elevated);
  border-color: var(--orange-primary);
  color: var(--orange-primary);
}

/* Danger Button */
.btn-danger {
  background: var(--status-red-dim);
  color: var(--status-red);
  border: 1px solid var(--status-red);
}

.btn-danger:hover:not(:disabled) {
  background: var(--status-red);
  color: #fff;
}

/* Monospace Digit Displays */
.mono-num {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
}

/* Modals */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.85);
  backdrop-filter: blur(8px);
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1rem;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.25s ease;
}

.modal-overlay.active {
  opacity: 1;
  pointer-events: all;
}

.modal-content {
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-xl);
  max-width: 600px;
  width: 100%;
  padding: 2rem;
  box-shadow: 0 24px 60px rgba(0, 0, 0, 0.8);
  transform: translateY(12px) scale(0.97);
  transition: transform 0.25s cubic-bezier(0.16, 1, 0.3, 1);
  position: relative;
}

.modal-overlay.active .modal-content {
  transform: translateY(0) scale(1);
}

/* Toast Notifications */
#toast-container {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  z-index: 9999;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  pointer-events: none;
}

.toast {
  background: var(--bg-card-elevated);
  border: 1px solid var(--border-light);
  border-left: 4px solid var(--orange-primary);
  color: var(--text-white);
  padding: 0.85rem 1.25rem;
  border-radius: var(--radius-md);
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.6);
  font-size: 0.85rem;
  pointer-events: all;
  display: flex;
  align-items: center;
  gap: 0.75rem;
  animation: slideToastIn 0.3s cubic-bezier(0.16, 1, 0.3, 1) forwards;
  max-width: 380px;
}

.toast.toast-purple {
  border-left-color: var(--purple-primary);
}

.toast.toast-success {
  border-left-color: var(--status-green);
}

.toast.toast-error {
  border-left-color: var(--status-red);
}

@keyframes slideToastIn {
  from { transform: translateX(50px); opacity: 0; }
  to { transform: translateX(0); opacity: 1; }
}

/* Responsive Utilities across Platform */
@media (max-width: 768px) {
  .site-header {
    padding: 0.5rem 0.85rem;
  }
  .header-container {
    flex-wrap: wrap;
    gap: 0.4rem;
  }
  .brand-subtitle {
    display: none;
  }
  .pixel-block-cluster {
    display: none;
  }
  .header-telemetry .telemetry-pill.accent-purple {
    display: none;
  }
  .nav-links {
    display: flex;
    width: 100%;
    overflow-x: auto;
    padding-top: 0.35rem;
    gap: 0.35rem;
    -webkit-overflow-scrolling: touch;
  }
  .nav-links::-webkit-scrollbar {
    display: none;
  }
  .nav-item {
    padding: 4px 10px;
    font-size: 0.75rem;
    white-space: nowrap;
    background: #030509;
    border: 1px solid var(--border-subtle);
  }
  .main-viewport {
    padding: 0.85rem;
  }
  .footer-container {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.6rem;
  }
  .footer-status-pill {
    width: 100%;
    justify-content: flex-start;
  }
}

@media (max-width: 480px) {
  .brand-title {
    font-size: 0.95rem;
  }
  .brand-icon-block {
    width: 28px;
    height: 28px;
  }
  .modal-content {
    padding: 1.25rem 1rem;
    max-width: 95vw;
  }
  #toast-container {
    left: 1rem;
    right: 1rem;
    bottom: 1rem;
  }
  .toast {
    max-width: 100%;
  }
}