/* ==========================================================================
   Kadon - Senior Mobile Developer & RF Tech Explorer
   Tactical RF Design System (Matching RoIP Merdeka)
   ========================================================================== */

:root {
  color-scheme: dark;
  --bg: #020202;
  --surface: #0B0F12;
  --surface-2: #12181D;
  --surface-3: #1A232A;
  --border: #26333B;
  --border-strong: #4C595D;
  --text: #F4F7F9;
  --text-2: #D0DCE2;
  --text-3: #8A9BA3;
  --text-4: #4C595D;
  --cyber-yellow: #FFDA01;
  --cyber-yellow-dark: #C1A501;
  --primary: #00ADE3;
  --primary-strong: #5CE1FF;
  --primary-soft: rgba(0, 173, 227, .16);
  --primary-soft-2: rgba(0, 173, 227, .08);
  --primary-border: rgba(0, 173, 227, .45);
  --green: #59A767;
  --green-dot: #59A767;
  --green-soft: rgba(89, 167, 103, .15);
  --green-border: rgba(89, 167, 103, .45);
  --amber: #FFDA01;
  --amber-soft: rgba(255, 218, 1, .14);
  --amber-border: rgba(255, 218, 1, .45);
  --red: #FF2E4C;
  --bar-bg: rgba(8, 11, 14, .94);
  --shadow: 0 1px 2px rgba(0, 0, 0, .4);
  --shadow-lg: 0 20px 50px rgba(0, 0, 0, .7);

  /* Legacy alias variables used across components */
  --bg-dark-base: var(--bg);
  --bg-dark-surface: var(--surface);
  --bg-dark-card: var(--surface-2);
  --bg-dark-pill: var(--surface-3);
  --accent-blue: var(--primary);
  --accent-cyan: var(--primary-strong);
  --accent-emerald: var(--green);
  --accent-amber: var(--cyber-yellow);
  --accent-purple: #00ADE3;
  --accent-pink: var(--red);
  --text-primary: var(--text);
  --text-secondary: var(--text-2);
  --text-muted: var(--text-3);

  /* Fonts */
  --font-sans: 'Chakra Petch', system-ui, -apple-system, sans-serif;
  --font-display: 'Rajdhani', 'Chakra Petch', sans-serif;
  --font-mono: 'JetBrains Mono', ui-monospace, monospace;

  /* Cut-corner polygons */
  --cut-lg: polygon(0 0, calc(100% - 16px) 0, 100% 16px, 100% 100%, 16px 100%, 0 calc(100% - 16px));
  --cut-md: polygon(0 0, calc(100% - 12px) 0, 100% 12px, 100% 100%, 0 100%);
  --cut-sm: polygon(0 0, calc(100% - 8px) 0, 100% 8px, 100% 100%, 0 100%);
  --cut-xs: polygon(0 0, calc(100% - 5px) 0, 100% 5px, 100% 100%, 0 100%);
}

html[data-theme="light"] {
  color-scheme: light;
  --bg: #F4F6F8;
  --surface: #FFFFFF;
  --surface-2: #EEF2F5;
  --surface-3: #E2E8EE;
  --border: #CBD5E0;
  --border-strong: #4C595D;
  --text: #0A0E12;
  --text-2: #1E2933;
  --text-3: #4C595D;
  --text-4: #7A8B94;
  --primary: #0088B8;
  --primary-strong: #00668C;
  --primary-soft: rgba(0, 173, 227, .14);
  --primary-soft-2: rgba(0, 173, 227, .08);
  --primary-border: #00ADE3;
  --green: #2E7D47;
  --green-dot: #59A767;
  --green-soft: rgba(89, 167, 103, .14);
  --green-border: #59A767;
  --amber: #9E8600;
  --amber-soft: rgba(255, 218, 1, .2);
  --amber-border: #C1A501;
  --red: #E11D48;
  --bar-bg: rgba(255, 255, 255, .94);
  --shadow: 0 1px 2px rgba(10, 14, 18, .06);
  --shadow-lg: 0 20px 50px rgba(10, 14, 18, .25);
}

/* --------------------------------------------------------------------------
   Global Reset & Base Setup
   -------------------------------------------------------------------------- */
* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

::selection {
  background: var(--cyber-yellow);
  color: #020202;
}

body {
  font-family: var(--font-sans);
  background-color: var(--bg);
  color: var(--text);
  line-height: 1.6;
  overflow-x: hidden;
  position: relative;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
  transition: background-color 0.25s ease, color 0.25s ease;
}

h1, h2, h3, h4, h5 {
  font-family: var(--font-display);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.font-monospace {
  font-family: var(--font-mono) !important;
}

/* Subtle tactical grid pattern */
.bg-grid-pattern {
  position: fixed;
  inset: 0;
  background-image:
    linear-gradient(to right, rgba(138, 155, 163, 0.05) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(138, 155, 163, 0.05) 1px, transparent 1px);
  background-size: 32px 32px;
  z-index: -1;
  pointer-events: none;
}

/* Custom Scrollbar */
::-webkit-scrollbar {
  width: 8px;
}
::-webkit-scrollbar-track {
  background: var(--bg);
}
::-webkit-scrollbar-thumb {
  background: var(--border-strong);
}

/* --------------------------------------------------------------------------
   Cut-Corner Tactical Containers
   -------------------------------------------------------------------------- */
.glass-card,
.mesh-widget-box,
.modal-content.glass-modal {
  --cut: 16px;
  --c-border: var(--border);
  position: relative;
  isolation: isolate;
  background: none;
  border: 0;
  border-radius: 0;
  box-shadow: none;
  transition: transform 0.2s ease;
}

.glass-card::after,
.mesh-widget-box::after,
.modal-content.glass-modal::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  border: 1.5px solid var(--c-border);
  background: linear-gradient(
    225deg,
    var(--c-border) calc(var(--cut) * 0.7071 + 1.5px),
    var(--surface) calc(var(--cut) * 0.7071 + 2px)
  ) border-box;
  clip-path: polygon(0 0, calc(100% - var(--cut)) 0, 100% var(--cut), 100% 100%, 0 100%);
  pointer-events: none;
  transition: border-color 0.25s ease;
}

.glass-card-hover:hover {
  transform: translateY(-3px);
  --c-border: var(--primary-border);
}

.glass-pill {
  background: var(--primary-soft);
  border: 1px solid var(--primary-border);
  color: var(--primary-strong);
  clip-path: var(--cut-xs);
  padding: 3px 10px;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

/* Diamond Tactical Status Dot */
.status-pulse {
  width: 8px;
  height: 8px;
  background-color: var(--green-dot);
  clip-path: polygon(50% 0, 100% 50%, 50% 100%, 0 50%);
  display: inline-block;
  animation: pulse 1.6s ease-in-out infinite;
}

.status-pulse.amber {
  background-color: var(--cyber-yellow);
}

@keyframes pulse {
  50% {
    opacity: 0.45;
  }
}

/* --------------------------------------------------------------------------
   Header & Tactical Top Navigation Bar
   -------------------------------------------------------------------------- */
header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: var(--bar-bg);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1.5px solid var(--border);
}

.navbar-floating {
  max-width: 1140px;
  height: 64px;
  margin: 0 auto;
  padding: 0 16px;
}

.brand-icon-box {
  width: 34px;
  height: 34px;
  display: grid;
  place-items: center;
  background: var(--cyber-yellow);
  border: 1.5px solid var(--cyber-yellow-dark);
  color: #020202;
  clip-path: var(--cut-sm);
  font-size: 1rem;
  flex-shrink: 0;
}

.nav-brand-title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.15rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--text);
}

.nav-link-ios {
  color: var(--text-3);
  font-family: var(--font-mono);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  padding: 6px 12px;
  border: 1px solid transparent;
  clip-path: var(--cut-xs);
  transition: all 0.15s ease;
  text-decoration: none;
}

.nav-link-ios:hover,
.nav-link-ios.active {
  color: var(--text);
  background: var(--surface-3);
  border-color: var(--border-strong);
}

.theme-toggle {
  width: 52px;
  height: 32px;
  padding: 0;
  border: 0;
  background: transparent;
  color: var(--text);
}

.theme-toggle-track {
  position: relative;
  display: block;
  width: 100%;
  height: 100%;
  overflow: hidden;
  border: 1px solid var(--border-strong);
  background: var(--surface-3);
  clip-path: var(--cut-xs);
  transition: background-color 0.2s ease, border-color 0.2s ease;
}

.theme-toggle-thumb {
  position: absolute;
  top: 3px;
  left: 3px;
  width: 24px;
  height: 24px;
  background: var(--cyber-yellow);
  clip-path: var(--cut-xs);
  transform: translateX(20px);
  transition: transform 0.25s ease;
  z-index: 1;
}

.theme-icon {
  position: absolute;
  top: 50%;
  z-index: 2;
  font-size: 0.7rem;
  line-height: 1;
  transform: translateY(-50%);
}

.theme-icon-sun {
  left: 8px;
  color: var(--text-3);
}

.theme-icon-moon {
  right: 7px;
  color: #020202;
}

html[data-theme="light"] .theme-toggle-thumb {
  transform: translateX(0);
}

html[data-theme="light"] .theme-icon-sun {
  color: #020202;
}

html[data-theme="light"] .theme-icon-moon {
  color: var(--text-3);
}

/* Tactical Chamfered Buttons (Matching RoIP Merdeka) */
.btn-ios-primary {
  background: var(--cyber-yellow);
  color: #020202 !important;
  border: 1.5px solid var(--cyber-yellow-dark);
  clip-path: var(--cut-sm);
  font-family: var(--font-mono);
  font-size: 0.8rem;
  font-weight: 800;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  padding: 9px 18px;
  transition: transform 0.15s ease, filter 0.15s ease;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.btn-ios-primary:hover {
  filter: brightness(1.06);
  color: #020202 !important;
  transform: translateY(-1px);
}

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

.btn-ios-secondary {
  background: var(--surface-3);
  color: var(--text-2);
  border: 1px solid var(--border-strong);
  clip-path: var(--cut-sm);
  font-family: var(--font-mono);
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  padding: 9px 18px;
  transition: all 0.15s ease;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.btn-ios-secondary:hover {
  background: var(--surface-2);
  color: var(--text);
  border-color: var(--primary-border);
}

/* --------------------------------------------------------------------------
   Hero Section
   -------------------------------------------------------------------------- */
.hero-section {
  padding-top: 112px;
  padding-bottom: 50px;
}

.profile-avatar-wrapper {
  position: relative;
  width: 96px;
  height: 96px;
}

.profile-avatar-img {
  width: 100%;
  height: 100%;
  background: var(--surface-2);
  border: 1.5px solid var(--border-strong);
  clip-path: var(--cut-md);
}

.profile-avatar-badge {
  position: absolute;
  bottom: -6px;
  right: -6px;
  background: var(--cyber-yellow);
  border: 1px solid var(--cyber-yellow-dark);
  clip-path: var(--cut-xs);
  padding: 2px 7px;
  font-size: 0.68rem;
  font-weight: 800;
  font-family: var(--font-mono);
  color: #020202;
  text-transform: uppercase;
}

.hero-title {
  font-family: var(--font-display);
  font-size: 3rem;
  font-weight: 700;
  letter-spacing: 0.03em;
  line-height: 1.08;
  margin-bottom: 16px;
  color: var(--text);
  text-transform: uppercase;
}

.hero-subtitle {
  font-size: 1.1rem;
  color: var(--text-2);
  max-width: 700px;
  margin-bottom: 24px;
}

.tag-badge {
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-left: 3px solid var(--primary-border);
  clip-path: var(--cut-xs);
  color: var(--text-2);
  font-family: var(--font-mono);
  font-size: 0.74rem;
  font-weight: 600;
  padding: 5px 11px;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

/* --------------------------------------------------------------------------
   Radio Wave Canvas Widget (Retro LCD Style from RoIP Merdeka)
   -------------------------------------------------------------------------- */
.canvas-container {
  width: 100%;
  height: 92px;
  overflow: hidden;
  border: 2px solid #1A232A;
  clip-path: var(--cut-md);
  background:
    repeating-linear-gradient(0deg, rgba(0, 0, 0, .22) 0, rgba(0, 0, 0, .22) 1px, transparent 1px, transparent 3px),
    linear-gradient(#0C1612, #070E0B);
  box-shadow: inset 0 2px 6px rgba(0, 0, 0, .5);
  position: relative;
}

canvas#radioWaveCanvas {
  width: 100%;
  height: 100%;
  display: block;
}

/* --------------------------------------------------------------------------
   Specialties Cards (3 Pillars)
   -------------------------------------------------------------------------- */
.pillar-card {
  padding: 28px;
  height: 100%;
  display: flex;
  flex-direction: column;
}

.pillar-icon {
  width: 46px;
  height: 46px;
  clip-path: var(--cut-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.35rem;
  margin-bottom: 18px;
}

.pillar-icon.mobile {
  background: var(--primary-soft);
  color: var(--primary);
  border: 1px solid var(--primary-border);
}

.pillar-icon.radio {
  background: var(--green-soft);
  color: var(--green);
  border: 1px solid var(--green-border);
}

.pillar-icon.mesh {
  background: var(--amber-soft);
  color: var(--amber);
  border: 1px solid var(--amber-border);
}

.pillar-title {
  font-size: 1.35rem;
  font-weight: 700;
  margin-bottom: 10px;
}

/* --------------------------------------------------------------------------
   Meshtatic Telemetry & Node Ping Simulator Widget
   -------------------------------------------------------------------------- */
.mesh-widget-box {
  --cut: 18px;
  --c-border: var(--border-strong);
  padding: 24px;
}

.node-status-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 12px;
  margin-top: 16px;
}

.telemetry-item {
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-left: 3px solid var(--primary-border);
  clip-path: var(--cut-sm);
  padding: 10px 14px;
}

.telemetry-label {
  font-size: 0.68rem;
  text-transform: uppercase;
  color: var(--text-3);
  font-family: var(--font-mono);
  font-weight: 700;
  letter-spacing: 0.08em;
  margin-bottom: 2px;
}

.telemetry-value {
  font-size: 1.15rem;
  font-weight: 700;
  font-family: var(--font-display);
  letter-spacing: 0.04em;
  color: var(--primary-strong);
}

/* Mesh Topology Graph Animation */
.mesh-nodes-visualizer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  position: relative;
  padding: 24px 10px;
  margin: 16px 0;
}

.mesh-node-dot {
  width: 44px;
  height: 44px;
  background: var(--surface-2);
  border: 1.5px solid var(--border-strong);
  clip-path: var(--cut-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  z-index: 2;
  position: relative;
  transition: all 0.25s ease;
}

.mesh-node-dot.active {
  border-color: var(--cyber-yellow-dark);
  background: var(--cyber-yellow);
  color: #020202 !important;
}

.mesh-node-dot.active i {
  color: #020202 !important;
}

.mesh-link-line {
  position: absolute;
  top: 50%;
  left: 30px;
  right: 30px;
  height: 2px;
  background: var(--border-strong);
  z-index: 1;
}

.mesh-packet-pulse {
  position: absolute;
  top: calc(50% - 6px);
  left: 30px;
  width: 12px;
  height: 12px;
  background: var(--cyber-yellow);
  clip-path: polygon(50% 0, 100% 50%, 50% 100%, 0 50%);
  z-index: 3;
  opacity: 0;
}

/* Terminal Log View (LCD Phosphor Display) */
.mesh-log-terminal {
  border: 2px solid #1A232A;
  clip-path: var(--cut-md);
  background:
    repeating-linear-gradient(0deg, rgba(0, 0, 0, .22) 0, rgba(0, 0, 0, .22) 1px, transparent 1px, transparent 3px),
    linear-gradient(#0C1612, #070E0B);
  box-shadow: inset 0 2px 6px rgba(0, 0, 0, .5);
  padding: 14px 16px;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: #7EE08F;
  height: 115px;
  overflow-y: auto;
  line-height: 1.55;
}

/* --------------------------------------------------------------------------
   Projects & Portfolio
   -------------------------------------------------------------------------- */
.project-card {
  padding: 22px;
  display: flex;
  flex-direction: column;
  height: 100%;
}

.project-thumb-box {
  width: 100%;
  height: 150px;
  margin-bottom: 18px;
  position: relative;
  background:
    repeating-linear-gradient(0deg, rgba(0, 0, 0, .14) 0, rgba(0, 0, 0, .14) 1px, transparent 1px, transparent 3px),
    var(--surface-2);
  border: 1px solid var(--border);
  clip-path: var(--cut-md);
  display: flex;
  align-items: center;
  justify-content: center;
}

.project-thumb-icon {
  font-size: 3rem;
  transition: transform 0.25s ease;
}

.project-card:hover .project-thumb-icon {
  transform: scale(1.08);
}

.project-title {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 6px;
}

.project-desc {
  color: var(--text-2);
  font-size: 0.9rem;
  flex-grow: 1;
  margin-bottom: 18px;
}

/* Filter Segmented Control */
.filter-segmented-bar {
  display: inline-flex;
  flex-wrap: wrap;
  gap: 6px;
}

.filter-btn {
  background: var(--surface-3);
  border: 1px solid var(--border);
  clip-path: var(--cut-xs);
  color: var(--text-2);
  font-family: var(--font-mono);
  font-size: 0.74rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  padding: 6px 14px;
  transition: all 0.15s ease;
  cursor: pointer;
}

.filter-btn:hover {
  border-color: var(--border-strong);
  color: var(--text);
}

.filter-btn.active {
  background: var(--cyber-yellow);
  border-color: var(--cyber-yellow-dark);
  color: #020202;
}

/* --------------------------------------------------------------------------
   Stats & Badges
   -------------------------------------------------------------------------- */
.stat-card {
  padding: 16px 14px;
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-left: 3px solid var(--primary-border);
  clip-path: var(--cut-sm);
  text-align: left;
}

.stat-number {
  font-size: 2rem;
  font-weight: 700;
  font-family: var(--font-display);
  color: var(--primary-strong);
  line-height: 1.1;
}

.stat-label {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-3);
  font-weight: 700;
  margin-top: 4px;
}

.badge {
  border-radius: 0 !important;
  clip-path: var(--cut-xs);
  font-family: var(--font-mono);
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  padding: 4px 8px;
}

.badge.bg-dark {
  background-color: var(--surface-3) !important;
  color: var(--text-2) !important;
  border-color: var(--border) !important;
}

.btn-outline-light {
  border-radius: 0 !important;
  clip-path: var(--cut-xs);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  background: var(--primary-soft-2);
  border: 1px solid var(--primary-border);
  color: var(--primary-strong);
  padding: 5px 12px;
}

.btn-outline-light:hover {
  background: var(--cyber-yellow);
  border-color: var(--cyber-yellow-dark);
  color: #020202;
}

.direct-link-item {
  background: var(--surface-2) !important;
  border: 1px solid var(--border);
  border-left: 3px solid var(--primary-border);
  border-radius: 0 !important;
  clip-path: var(--cut-sm);
  font-family: var(--font-mono);
  font-size: 0.82rem;
  font-weight: 600;
  transition: border-color 0.15s ease, background-color 0.15s ease;
}

.direct-link-item:hover {
  border-color: var(--cyber-yellow-dark);
  background: var(--surface-3) !important;
}

/* --------------------------------------------------------------------------
   Modals & Toasts
   -------------------------------------------------------------------------- */
.modal-content.glass-modal {
  --cut: 18px;
  --c-border: var(--border-strong);
  color: var(--text);
}

.modal-header {
  border-bottom: 1px solid var(--border);
  padding: 18px 24px;
}

.modal-body {
  padding: 24px;
}

#liveToast {
  border-radius: 0 !important;
  clip-path: var(--cut-sm);
  background: var(--cyber-yellow) !important;
  color: #020202 !important;
  border: 1.5px solid var(--cyber-yellow-dark) !important;
  font-weight: 700;
}

#liveToast .btn-close-white {
  filter: none;
}

/* --------------------------------------------------------------------------
   Footer & Theme Utility Overrides
   -------------------------------------------------------------------------- */
footer {
  padding: 36px 0;
  border-top: 1.5px solid var(--border);
  margin-top: 64px;
}

.footer-text {
  font-family: var(--font-display);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-2);
  font-size: 0.95rem;
}

.text-white,
.text-light {
  color: var(--text) !important;
}

.text-secondary {
  color: var(--text-2) !important;
}

.text-muted {
  color: var(--text-3) !important;
}

.text-info {
  color: var(--primary-strong) !important;
}

.text-success {
  color: var(--green) !important;
}

.text-warning {
  color: var(--amber) !important;
}

html[data-theme="light"] .btn-close-white {
  filter: none;
}

html[data-theme="light"] #contact .rounded-4 {
  background: var(--surface-2) !important;
  border-color: var(--border) !important;
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

/* --------------------------------------------------------------------------
   Responsive Design Fixes
   -------------------------------------------------------------------------- */
@media (max-width: 768px) {
  .hero-title {
    font-size: 2.2rem;
  }
  .hero-subtitle {
    font-size: 1rem;
  }
  .hero-section {
    padding-top: 96px;
  }
}

@media (max-width: 480px) {
  .nav-brand-title {
    font-size: 0.92rem;
  }
  .style-btn {
    width: 34px;
    height: 32px;
    padding: 0 !important;
    justify-content: center;
  }
  .style-btn span {
    display: none;
  }
}