/* =====================
   TOKENS
   ===================== */
:root {
  --bg:        #0a0a0f;
  --bg-card:   #111118;
  --bg-card2:  #16161f;
  --border:    #1e1e2e;
  --accent:    #7c6aff;
  --accent2:   #3ecfcf;
  --text:      #e8e8f0;
  --text-muted:#7a7a9a;
  --text-dim:  #3a3a5a;
  --green:     #2ecc71;
  --red:       #e74c3c;

  --font-display: 'Space Grotesk', sans-serif;
  --font-mono:    'Space Mono', monospace;

  --radius:    12px;
  --radius-sm: 6px;
  --max-width: 1100px;
  --nav-h:     64px;
}

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

html { scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-display);
  font-size: 16px;
  line-height: 1.7;
  min-height: 100vh;
}

a { color: var(--accent); text-decoration: none; transition: opacity .2s; }
a:hover { opacity: .75; }

ul { list-style: none; }

img { max-width: 100%; display: block; }

/* =====================
   NAV
   ===================== */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: var(--nav-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 2rem;
  background: rgba(10,10,15,.85);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  z-index: 100;
}

.nav-logo {
  font-family: var(--font-mono);
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--accent);
  letter-spacing: .05em;
}

.nav-links {
  display: flex;
  gap: 2rem;
}

.nav-links a {
  color: var(--text-muted);
  font-size: .9rem;
  font-weight: 500;
  letter-spacing: .03em;
  transition: color .2s;
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--text);
  opacity: 1;
}

.nav-links a.active {
  color: var(--accent);
}

.nav-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--text);
  font-size: 1.4rem;
  cursor: pointer;
}

/* =====================
   LAYOUT
   ===================== */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 2rem;
}

.section {
  padding: 5rem 0;
}

.section-label {
  font-family: var(--font-mono);
  font-size: .75rem;
  color: var(--accent);
  letter-spacing: .15em;
  text-transform: uppercase;
  display: block;
  margin-bottom: 1rem;
}

.section-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 2.5rem;
}

.section-header h2 { margin-bottom: 0; }

h1, h2, h3 {
  font-family: var(--font-display);
  font-weight: 700;
  line-height: 1.15;
  color: var(--text);
}

h1 { font-size: clamp(2.5rem, 6vw, 5rem); }
h2 { font-size: clamp(1.6rem, 3vw, 2.4rem); margin-bottom: 1.5rem; }
h3 { font-size: 1.1rem; margin-bottom: .5rem; }

p { color: var(--text-muted); margin-bottom: 1rem; }

/* =====================
   BUTTONS
   ===================== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: .5rem;
  padding: .75rem 1.5rem;
  border-radius: var(--radius-sm);
  font-family: var(--font-display);
  font-size: .9rem;
  font-weight: 600;
  cursor: pointer;
  transition: all .2s;
  border: none;
}

.btn-primary {
  background: var(--accent);
  color: #fff;
}

.btn-primary:hover {
  background: #6a58e8;
  opacity: 1;
  transform: translateY(-1px);
}

.btn-ghost {
  background: transparent;
  color: var(--text);
  border: 1px solid var(--border);
}

.btn-ghost:hover {
  border-color: var(--accent);
  color: var(--accent);
  opacity: 1;
}

/* =====================
   HERO
   ===================== */
.hero {
  min-height: 100vh;
  display: grid;
  grid-template-columns: 1fr 1fr;
  align-items: center;
  gap: 4rem;
  padding: calc(var(--nav-h) + 4rem) 2rem 4rem;
  max-width: var(--max-width);
  margin: 0 auto;
}

.hero-eyebrow {
  font-family: var(--font-mono);
  font-size: .8rem;
  color: var(--accent2);
  letter-spacing: .1em;
  display: block;
  margin-bottom: 1rem;
}

.hero-name {
  font-size: clamp(3rem, 7vw, 6rem);
  font-weight: 700;
  line-height: 1.0;
  margin-bottom: 1.5rem;
  background: linear-gradient(135deg, var(--text) 60%, var(--accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-bio {
  font-size: 1.05rem;
  color: var(--text-muted);
  max-width: 420px;
  margin-bottom: 2rem;
}

.hero-cta {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

/* TERMINAL */
.terminal {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  font-family: var(--font-mono);
  box-shadow: 0 24px 60px rgba(0,0,0,.4);
}

.terminal-bar {
  background: var(--bg-card2);
  padding: .75rem 1rem;
  display: flex;
  align-items: center;
  gap: .5rem;
  border-bottom: 1px solid var(--border);
}

.dot {
  width: 12px; height: 12px;
  border-radius: 50%;
}
.dot.red    { background: #ff5f57; }
.dot.yellow { background: #febc2e; }
.dot.green  { background: #28c840; }

.terminal-title {
  font-size: .75rem;
  color: var(--text-muted);
  margin-left: .5rem;
}

.terminal-body {
  padding: 1.5rem;
  font-size: .9rem;
  line-height: 2;
}

.prompt { color: var(--accent); margin-right: .5rem; }
.output { color: var(--accent2); padding-left: 1rem; }

.cursor {
  display: inline-block;
  animation: blink 1s step-end infinite;
}

@keyframes blink {
  0%, 100% { opacity: 1; }
  50%       { opacity: 0; }
}

/* =====================
   ABOUT
   ===================== */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: start;
}

.about-stats {
  display: flex;
  flex-direction: column;
  gap: 2rem;
  padding-top: .5rem;
}

.stat {
  border-left: 2px solid var(--accent);
  padding-left: 1.5rem;
}

.stat-number {
  display: block;
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--text);
  font-family: var(--font-mono);
  line-height: 1;
  margin-bottom: .25rem;
}

.stat-label {
  font-size: .85rem;
  color: var(--text-muted);
}

/* =====================
   SKILLS
   ===================== */
.skills { background: var(--bg-card); }

.skills-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
  margin-top: 2rem;
}

.skill-group {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem;
}

.skill-group h3 {
  color: var(--accent);
  font-family: var(--font-mono);
  font-size: .85rem;
  letter-spacing: .08em;
  text-transform: uppercase;
  margin-bottom: 1rem;
}

.skill-group ul {
  display: flex;
  flex-direction: column;
  gap: .5rem;
}

.skill-group li {
  color: var(--text-muted);
  font-size: .9rem;
  padding: .4rem 0;
  border-bottom: 1px solid var(--border);
}

.skill-group li:last-child { border-bottom: none; }

/* =====================
   PROJECTS
   ===================== */
.projects-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}

.project-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.75rem;
  transition: border-color .2s, transform .2s;
  display: flex;
  flex-direction: column;
  gap: .75rem;
}

.project-card:hover {
  border-color: var(--accent);
  transform: translateY(-2px);
}

.project-tag {
  font-family: var(--font-mono);
  font-size: .7rem;
  color: var(--accent2);
  letter-spacing: .1em;
  text-transform: uppercase;
}

.project-card h3 { margin-bottom: 0; }
.project-card p  { font-size: .9rem; flex: 1; margin-bottom: 0; }

.project-tech {
  display: flex;
  flex-wrap: wrap;
  gap: .4rem;
}

.tech-tag {
  font-family: var(--font-mono);
  font-size: .7rem;
  color: var(--text-muted);
  background: var(--bg-card2);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: .2rem .5rem;
}

.project-link {
  font-size: .85rem;
  font-weight: 600;
  color: var(--accent);
  margin-top: .5rem;
}

/* =====================
   PAGE HEADER
   ===================== */
.page-header {
  padding: calc(var(--nav-h) + 4rem) 0 3rem;
  border-bottom: 1px solid var(--border);
}

.page-header h1 { font-size: clamp(2.5rem, 5vw, 4rem); margin-bottom: .75rem; }
.page-header p  { font-size: 1.05rem; }

/* =====================
   FILTER BAR
   ===================== */
.filter-bar {
  display: flex;
  gap: .75rem;
  margin-bottom: 2.5rem;
  flex-wrap: wrap;
}

.filter-btn {
  background: var(--bg-card);
  border: 1px solid var(--border);
  color: var(--text-muted);
  padding: .5rem 1.25rem;
  border-radius: 100px;
  font-family: var(--font-display);
  font-size: .85rem;
  cursor: pointer;
  transition: all .2s;
}

.filter-btn:hover,
.filter-btn.active {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
}

/* =====================
   IOT DASHBOARD
   ===================== */
.dashboard-status {
  display: flex;
  align-items: center;
  gap: .75rem;
  margin-bottom: 2rem;
  font-family: var(--font-mono);
  font-size: .8rem;
  color: var(--text-muted);
}

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

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50%       { opacity: .4; }
}

.status-time { margin-left: auto; }

.dashboard-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.25rem;
  margin-bottom: 2.5rem;
}

.dashboard-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem;
}

.dashboard-card-header {
  display: flex;
  align-items: center;
  gap: .5rem;
  margin-bottom: 1rem;
}

.card-icon { font-size: 1.1rem; }

.card-label {
  font-family: var(--font-mono);
  font-size: .75rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: .08em;
}

.card-value {
  font-family: var(--font-mono);
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--text);
  line-height: 1;
}

.card-unit {
  font-family: var(--font-mono);
  font-size: .8rem;
  color: var(--accent2);
  margin-top: .25rem;
}

.card-sub {
  font-size: .75rem;
  color: var(--text-dim);
  margin-top: .5rem;
}

.chart-container {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.75rem;
  margin-bottom: 2.5rem;
}

.chart-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1.5rem;
}

.chart-header h3 { margin-bottom: 0; }

.chart-note {
  font-family: var(--font-mono);
  font-size: .75rem;
  color: var(--text-dim);
}

.chart-placeholder {
  height: 200px;
  border: 2px dashed var(--border);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-dim);
  font-size: .9rem;
}

/* DEVICE LIST */
.device-list h3 { margin-bottom: 1rem; }

.device-table {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
}

.device-row {
  display: grid;
  grid-template-columns: 2fr 2fr 1fr 1fr;
  padding: 1rem 1.5rem;
  border-bottom: 1px solid var(--border);
  font-size: .9rem;
  align-items: center;
}

.device-row:last-child { border-bottom: none; }

.device-row-header {
  background: var(--bg-card2);
  font-family: var(--font-mono);
  font-size: .75rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: .08em;
}

.status-badge {
  display: inline-flex;
  align-items: center;
  gap: .35rem;
  font-size: .75rem;
  font-family: var(--font-mono);
  padding: .25rem .6rem;
  border-radius: 100px;
}

.status-badge::before {
  content: '';
  width: 6px; height: 6px;
  border-radius: 50%;
  display: inline-block;
}

.status-badge.online  { color: var(--green); background: rgba(46,204,113,.1); }
.status-badge.online::before  { background: var(--green); }
.status-badge.offline { color: var(--red);   background: rgba(231,76,60,.1); }
.status-badge.offline::before { background: var(--red); }

/* =====================
   CONTACT
   ===================== */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: start;
}

.contact-links {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  margin-top: 2rem;
}

.contact-item {
  display: flex;
  align-items: center;
  gap: 1rem;
  color: var(--text-muted);
  font-size: .95rem;
  padding: 1rem 1.25rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  transition: border-color .2s;
}

.contact-item:hover {
  border-color: var(--accent);
  color: var(--text);
  opacity: 1;
}

.contact-icon { font-size: 1.1rem; }

.form-group {
  display: flex;
  flex-direction: column;
  gap: .5rem;
  margin-bottom: 1.25rem;
}

label {
  font-size: .85rem;
  font-weight: 500;
  color: var(--text-muted);
  font-family: var(--font-mono);
  letter-spacing: .05em;
}

input, textarea {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text);
  font-family: var(--font-display);
  font-size: .95rem;
  padding: .75rem 1rem;
  transition: border-color .2s;
  width: 100%;
  resize: vertical;
}

input:focus, textarea:focus {
  outline: none;
  border-color: var(--accent);
}

input::placeholder, textarea::placeholder {
  color: var(--text-dim);
}

.form-note {
  font-size: .8rem;
  color: var(--text-dim);
  margin-top: .75rem;
  font-family: var(--font-mono);
}

/* =====================
   FOOTER
   ===================== */
.footer {
  border-top: 1px solid var(--border);
  padding: 2rem 0;
}

.footer .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.footer-name {
  font-family: var(--font-mono);
  font-size: .85rem;
  color: var(--text-muted);
}

.footer-links {
  display: flex;
  gap: 1.5rem;
}

.footer-links a {
  font-size: .85rem;
  color: var(--text-muted);
}

.footer-links a:hover {
  color: var(--text);
  opacity: 1;
}

/* =====================
   RESPONSIVE
   ===================== */
@media (max-width: 768px) {
  .nav-links { display: none; }
  .nav-links.open {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: var(--nav-h);
    left: 0; right: 0;
    background: var(--bg-card);
    padding: 1.5rem;
    border-bottom: 1px solid var(--border);
    gap: 1.25rem;
  }
  .nav-toggle { display: block; }

  .hero {
    grid-template-columns: 1fr;
    min-height: auto;
    padding-top: calc(var(--nav-h) + 2rem);
  }

  .hero-visual { display: none; }
  .about-grid  { grid-template-columns: 1fr; }
  .skills-grid { grid-template-columns: 1fr; }
  .projects-grid { grid-template-columns: 1fr; }
  .dashboard-grid { grid-template-columns: 1fr 1fr; }
  .contact-grid { grid-template-columns: 1fr; }
  .footer .container { flex-direction: column; gap: 1rem; text-align: center; }
  .section-header { flex-direction: column; align-items: flex-start; gap: 1rem; }
}

@media (max-width: 480px) {
  .dashboard-grid { grid-template-columns: 1fr; }
  .device-row { grid-template-columns: 1fr 1fr; gap: .5rem; }
}