/* ========================================
   PRAM.ID — Design System & Styles
   Network Engineer Portfolio
   ======================================== */

/* ---- CSS Variables ---- */
:root {
  --bg-primary:    #080d1a;
  --bg-secondary:  #0d1526;
  --bg-card:       #111827;
  --bg-card-hover: #161f30;
  --bg-glass:      rgba(17, 24, 39, 0.7);

  --cyan:          #00e5ff;
  --cyan-dim:      #00b8d4;
  --cyan-glow:     rgba(0, 229, 255, 0.15);
  --blue:          #3b82f6;
  --purple:        #8b5cf6;
  --green:         #10b981;
  --orange:        #f59e0b;
  --red:           #ef4444;

  --text-primary:  #f0f6ff;
  --text-secondary:#8facc8;
  --text-muted:    #4a6080;

  --border:        rgba(0, 229, 255, 0.1);
  --border-hover:  rgba(0, 229, 255, 0.35);

  --radius-sm:     6px;
  --radius-md:     12px;
  --radius-lg:     20px;
  --radius-xl:     28px;

  --font-sans:     'Inter', system-ui, sans-serif;
  --font-mono:     'JetBrains Mono', 'Fira Code', monospace;

  --shadow-glow:   0 0 40px rgba(0, 229, 255, 0.12);
  --shadow-card:   0 4px 24px rgba(0,0,0,0.4);
  --transition:    all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ---- Reset & Base ---- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html {
  scroll-behavior: smooth;
  scroll-padding-top: 80px;
  font-size: 16px;
}

body {
  font-family: var(--font-sans);
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  overflow-x: hidden;
}

a { text-decoration: none; color: inherit; }
img { max-width: 100%; display: block; }
ul { list-style: none; }

/* ---- Canvas BG ---- */
#networkCanvas {
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  opacity: 0.45;
}

/* ---- Container ---- */
.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 24px;
  position: relative;
  z-index: 2;
}

/* ======================================
   NAVBAR
====================================== */
.navbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 40px;
  height: 70px;
  background: rgba(8, 13, 26, 0.85);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border);
  transition: var(--transition);
}

.navbar.scrolled {
  background: rgba(8, 13, 26, 0.98);
  box-shadow: 0 2px 30px rgba(0,0,0,0.5);
}

.nav-logo {
  font-family: var(--font-mono);
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--text-primary);
  letter-spacing: -0.5px;
  cursor: default;
}

.logo-bracket {
  color: var(--cyan);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 8px;
}

.nav-link {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-secondary);
  padding: 6px 14px;
  border-radius: var(--radius-sm);
  transition: var(--transition);
  position: relative;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0; left: 50%; right: 50%;
  height: 2px;
  background: var(--cyan);
  transition: var(--transition);
  border-radius: 2px;
}

.nav-link:hover,
.nav-link.active {
  color: var(--text-primary);
  background: var(--cyan-glow);
}

.nav-link:hover::after,
.nav-link.active::after {
  left: 14px; right: 14px;
}

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
}

.nav-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--text-secondary);
  border-radius: 2px;
  transition: var(--transition);
}

/* ======================================
   HERO
====================================== */
.hero {
  position: relative;
  z-index: 1;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 48px;
  padding: 100px 80px 60px;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: -200px; right: -200px;
  width: 600px; height: 600px;
  background: radial-gradient(circle, rgba(0, 229, 255, 0.06) 0%, transparent 70%);
  pointer-events: none;
}

.hero-content {
  flex: 1;
  max-width: 560px;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(16, 185, 129, 0.1);
  border: 1px solid rgba(16, 185, 129, 0.3);
  color: var(--green);
  font-size: 0.8rem;
  font-weight: 500;
  padding: 6px 14px;
  border-radius: 50px;
  margin-bottom: 24px;
  animation: fadeInDown 0.6s ease both;
}

.badge-dot {
  width: 8px; height: 8px;
  background: var(--green);
  border-radius: 50%;
  animation: pulse 2s ease infinite;
}

.hero-title {
  font-size: clamp(2.4rem, 5vw, 4rem);
  font-weight: 900;
  line-height: 1.1;
  letter-spacing: -1.5px;
  margin-bottom: 16px;
  animation: fadeInUp 0.6s 0.1s ease both;
}

.gradient-text {
  background: linear-gradient(135deg, var(--cyan) 0%, var(--blue) 50%, var(--purple) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-typewriter {
  font-family: var(--font-mono);
  font-size: 1.1rem;
  color: var(--cyan);
  margin-bottom: 20px;
  min-height: 1.6em;
  animation: fadeInUp 0.6s 0.2s ease both;
}

.cursor {
  animation: blink 1s step-end infinite;
  color: var(--cyan);
}

.hero-desc {
  font-size: 1rem;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 32px;
  animation: fadeInUp 0.6s 0.3s ease both;
}

.hero-cta {
  display: flex;
  gap: 14px;
  margin-bottom: 48px;
  flex-wrap: wrap;
  animation: fadeInUp 0.6s 0.4s ease both;
}

/* ---- Buttons ---- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 24px;
  border-radius: var(--radius-md);
  font-size: 0.9rem;
  font-weight: 600;
  font-family: var(--font-sans);
  cursor: pointer;
  border: none;
  transition: var(--transition);
  white-space: nowrap;
}

.btn-primary {
  background: linear-gradient(135deg, var(--cyan-dim), var(--blue));
  color: #fff;
  box-shadow: 0 4px 20px rgba(0, 180, 212, 0.35);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(0, 180, 212, 0.5);
}

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

.btn-ghost:hover {
  border-color: var(--border-hover);
  color: var(--text-primary);
  background: var(--cyan-glow);
}

.btn-full { width: 100%; justify-content: center; }

/* ---- Hero Stats ---- */
.hero-stats {
  display: flex;
  align-items: center;
  gap: 24px;
  animation: fadeInUp 0.6s 0.5s ease both;
}

.stat-item {
  text-align: center;
}

.stat-number {
  display: block;
  font-size: 2rem;
  font-weight: 900;
  color: var(--cyan);
  font-variant-numeric: tabular-nums;
  line-height: 1;
}

.stat-label {
  font-size: 0.75rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-top: 4px;
}

.stat-divider {
  width: 1px;
  height: 40px;
  background: var(--border);
}

/* ---- Hero Visual ---- */
.hero-visual {
  flex-shrink: 0;
  animation: fadeInRight 0.8s 0.2s ease both;
}

.avatar-container {
  position: relative;
  width: 280px;
  height: 280px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.avatar-ring {
  position: absolute;
  border-radius: 50%;
  border: 1px solid rgba(0, 229, 255, 0.2);
  animation: spin 20s linear infinite;
}

.ring-1 { width: 100%; height: 100%; animation-duration: 20s; }
.ring-2 { width: 80%; height: 80%; animation-duration: 15s; animation-direction: reverse; border-color: rgba(59, 130, 246, 0.2); }
.ring-3 { width: 60%; height: 60%; animation-duration: 10s; border-color: rgba(139, 92, 246, 0.2); }

.avatar-img {
  width: 140px;
  height: 140px;
  border-radius: 50%;
  background: linear-gradient(135deg, #1e3a5f, #0d1f3c);
  border: 3px solid transparent;
  background-clip: padding-box;
  box-shadow: 0 0 0 3px var(--cyan-dim), var(--shadow-glow);
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
  cursor: pointer;
  transition: var(--transition);
}

.avatar-img:hover {
  box-shadow: 0 0 0 3px var(--cyan), 0 0 60px rgba(0, 229, 255, 0.3);
  transform: scale(1.05);
}

.avatar-img svg {
  width: 100%;
  height: 100%;
  opacity: 0.5;
}

.avatar-initials {
  position: absolute;
  font-size: 3rem;
  font-weight: 900;
  color: var(--cyan);
  font-family: var(--font-mono);
  text-shadow: 0 0 20px var(--cyan);
}

/* ---- Floating Badges ---- */
.floating-badge {
  position: absolute;
  background: var(--bg-card);
  border: 1px solid var(--border);
  color: var(--cyan);
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 700;
  padding: 6px 12px;
  border-radius: var(--radius-sm);
  white-space: nowrap;
  box-shadow: var(--shadow-card);
  animation: float 4s ease-in-out infinite;
}

.badge-bgp    { top: 10%;  right: -20px; animation-delay: 0s; }
.badge-ospf   { bottom: 25%; right: -30px; animation-delay: 1s; }
.badge-mpls   { bottom: 10%; left: -10px; animation-delay: 2s; }
.badge-mikrotik { top: 25%; left: -30px; animation-delay: 1.5s; }

/* ======================================
   SECTIONS
====================================== */
.section {
  position: relative;
  z-index: 1;
  padding: 100px 0;
}

.section-dark {
  background: var(--bg-secondary);
}

.section-header {
  text-align: center;
  margin-bottom: 64px;
}

.section-tag {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--cyan);
  letter-spacing: 2px;
  text-transform: lowercase;
  display: block;
  margin-bottom: 12px;
}

.section-title {
  font-size: clamp(1.8rem, 4vw, 2.8rem);
  font-weight: 800;
  letter-spacing: -1px;
  color: var(--text-primary);
}

.section-subtitle {
  color: var(--text-secondary);
  margin-top: 12px;
  font-size: 1rem;
}

/* ======================================
   ABOUT
====================================== */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: center;
}

.about-lead {
  font-size: 1.15rem;
  font-weight: 500;
  color: var(--text-primary);
  margin-bottom: 16px;
  line-height: 1.7;
}

.about-text p {
  color: var(--text-secondary);
  margin-bottom: 14px;
  line-height: 1.7;
}

.about-info-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  margin-top: 28px;
}

.info-item {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 14px 16px;
}

.info-label {
  display: block;
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--text-muted);
  margin-bottom: 4px;
}

.info-value {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-primary);
}

.info-available {
  color: var(--green);
}

/* ---- Terminal ---- */
.about-terminal {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-card), var(--shadow-glow);
}

.terminal-header {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 20px;
  background: rgba(0,0,0,0.3);
  border-bottom: 1px solid var(--border);
}

.terminal-dots { display: flex; gap: 6px; }
.dot {
  width: 12px; height: 12px;
  border-radius: 50%;
}
.dot-red    { background: #ff5f56; }
.dot-yellow { background: #ffbd2e; }
.dot-green  { background: #27c93f; }

.terminal-title {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-muted);
}

.terminal-body {
  padding: 20px;
  font-family: var(--font-mono);
  font-size: 0.82rem;
  line-height: 1.8;
  min-height: 220px;
}

.terminal-line { display: flex; gap: 8px; }

.t-prompt {
  color: var(--green);
  flex-shrink: 0;
}

.t-cmd {
  color: var(--cyan);
}

.t-output {
  color: var(--text-secondary);
  padding-left: 16px;
}

.t-success { color: var(--green); }

.t-cursor-blink {
  animation: blink 1s step-end infinite;
  color: var(--cyan);
}

/* ======================================
   SKILLS
====================================== */
.skills-categories {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}

.skill-category {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 28px;
  transition: var(--transition);
}

.skill-category:hover {
  border-color: var(--border-hover);
  box-shadow: var(--shadow-glow);
  transform: translateY(-2px);
}

.skill-cat-header {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 20px;
}

.skill-cat-icon {
  width: 40px; height: 40px;
  background: var(--cyan-glow);
  border: 1px solid rgba(0, 229, 255, 0.2);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--cyan);
  flex-shrink: 0;
}

.skill-cat-header h3 {
  font-size: 1rem;
  font-weight: 700;
  color: var(--text-primary);
}

.skill-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.skill-tag {
  padding: 5px 12px;
  border-radius: 50px;
  font-size: 0.78rem;
  font-weight: 600;
  font-family: var(--font-mono);
  border: 1px solid;
  transition: var(--transition);
  cursor: default;
}

.skill-tag:hover { transform: scale(1.05); }

.skill-tag.skill-expert {
  background: rgba(0, 229, 255, 0.1);
  border-color: rgba(0, 229, 255, 0.4);
  color: var(--cyan);
}

.skill-tag.skill-advanced {
  background: rgba(59, 130, 246, 0.1);
  border-color: rgba(59, 130, 246, 0.4);
  color: var(--blue);
}

.skill-tag.skill-intermediate {
  background: rgba(139, 92, 246, 0.1);
  border-color: rgba(139, 92, 246, 0.4);
  color: var(--purple);
}

.skill-legend {
  display: flex;
  justify-content: center;
  gap: 28px;
  margin-top: 32px;
}

.legend-item {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.8rem;
  color: var(--text-secondary);
}

.legend-dot {
  display: inline-block;
  width: 10px; height: 10px;
  border-radius: 50%;
  border: 2px solid;
}

.legend-dot.skill-expert     { background: rgba(0,229,255,0.2); border-color: var(--cyan); }
.legend-dot.skill-advanced   { background: rgba(59,130,246,0.2); border-color: var(--blue); }
.legend-dot.skill-intermediate { background: rgba(139,92,246,0.2); border-color: var(--purple); }

/* ======================================
   EXPERIENCE / TIMELINE
====================================== */
.timeline {
  position: relative;
  padding-left: 40px;
}

.timeline::before {
  content: '';
  position: absolute;
  left: 8px;
  top: 0; bottom: 0;
  width: 2px;
  background: linear-gradient(to bottom, var(--cyan), var(--blue), transparent);
}

.timeline-item {
  position: relative;
  margin-bottom: 40px;
  opacity: 0;
  transform: translateX(-20px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.timeline-item.visible {
  opacity: 1;
  transform: translateX(0);
}

.timeline-dot {
  position: absolute;
  left: -36px;
  top: 20px;
  width: 16px; height: 16px;
  border-radius: 50%;
  background: var(--bg-primary);
  border: 2px solid var(--cyan);
  box-shadow: 0 0 12px var(--cyan);
}

.timeline-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 28px;
  transition: var(--transition);
}

.timeline-card:hover {
  border-color: var(--border-hover);
  box-shadow: var(--shadow-glow);
}

.timeline-meta {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 10px;
}

.timeline-period {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--cyan);
}

.timeline-badge {
  font-size: 0.7rem;
  font-weight: 600;
  padding: 3px 10px;
  border-radius: 50px;
  background: rgba(0, 229, 255, 0.1);
  border: 1px solid rgba(0, 229, 255, 0.3);
  color: var(--cyan);
}

.timeline-badge-past {
  background: rgba(100, 116, 139, 0.1);
  border-color: rgba(100, 116, 139, 0.3);
  color: var(--text-muted);
}

.timeline-role {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 4px;
}

.timeline-company {
  font-size: 0.9rem;
  color: var(--cyan-dim);
  font-weight: 500;
  margin-bottom: 12px;
}

.timeline-desc {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 16px;
}

.timeline-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.timeline-tags span {
  font-size: 0.72rem;
  font-family: var(--font-mono);
  background: rgba(59, 130, 246, 0.1);
  border: 1px solid rgba(59, 130, 246, 0.3);
  color: var(--blue);
  padding: 3px 10px;
  border-radius: 50px;
}

/* ======================================
   PROJECTS
====================================== */
.projects-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}

.project-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 28px;
  transition: var(--transition);
  opacity: 0;
  transform: translateY(20px);
  display: flex;
  flex-direction: column;
}

.project-card.visible {
  opacity: 1;
  transform: translateY(0);
}

.project-card:hover {
  border-color: var(--border-hover);
  box-shadow: var(--shadow-glow);
  transform: translateY(-4px);
}

.project-card-wide {
  grid-column: span 2;
}

.project-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 16px;
}

.project-icon {
  width: 48px; height: 48px;
  background: var(--cyan-glow);
  border: 1px solid rgba(0,229,255,0.2);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--cyan);
}

.project-links {
  display: flex;
  gap: 10px;
}

.project-link {
  color: var(--text-muted);
  transition: var(--transition);
  padding: 4px;
}

.project-link:hover {
  color: var(--cyan);
}

.project-title {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 10px;
}

.project-desc {
  font-size: 0.88rem;
  color: var(--text-secondary);
  line-height: 1.7;
  flex: 1;
  margin-bottom: 20px;
}

.project-tech {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: auto;
}

.project-tech span {
  font-size: 0.72rem;
  font-family: var(--font-mono);
  background: rgba(0, 229, 255, 0.07);
  border: 1px solid rgba(0, 229, 255, 0.2);
  color: var(--cyan);
  padding: 3px 10px;
  border-radius: 50px;
}

/* ======================================
   CERTIFICATIONS
====================================== */
.cert-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.cert-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 28px 20px;
  text-align: center;
  transition: var(--transition);
  opacity: 0;
  transform: scale(0.95);
}

.cert-card.visible {
  opacity: 1;
  transform: scale(1);
}

.cert-card:hover {
  border-color: var(--border-hover);
  box-shadow: var(--shadow-glow);
  transform: translateY(-4px);
}

.cert-add {
  border-style: dashed;
  opacity: 0.5;
}

.cert-add:hover {
  opacity: 0.8;
}

.cert-icon {
  width: 60px; height: 60px;
  background: linear-gradient(135deg, rgba(0,229,255,0.15), rgba(59,130,246,0.15));
  border: 1px solid rgba(0,229,255,0.2);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 16px;
  color: var(--cyan);
}

.cert-icon-plus { color: var(--text-muted); background: none; border-style: dashed; }

.cert-name {
  font-size: 1.1rem;
  font-weight: 800;
  font-family: var(--font-mono);
  color: var(--text-primary);
  margin-bottom: 6px;
}

.cert-issuer {
  font-size: 0.75rem;
  color: var(--text-secondary);
  line-height: 1.4;
  margin-bottom: 10px;
}

.cert-year {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--cyan);
  font-weight: 600;
}

/* ======================================
   CONTACT
====================================== */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.4fr;
  gap: 48px;
  align-items: start;
}

.contact-info {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.contact-item {
  display: flex;
  align-items: center;
  gap: 16px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 16px 20px;
  transition: var(--transition);
}

.contact-item:hover {
  border-color: var(--border-hover);
  background: var(--bg-card-hover);
}

.contact-icon {
  width: 42px; height: 42px;
  background: var(--cyan-glow);
  border: 1px solid rgba(0,229,255,0.2);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--cyan);
  flex-shrink: 0;
}

.contact-label {
  display: block;
  font-size: 0.7rem;
  text-transform: uppercase;
  color: var(--text-muted);
  letter-spacing: 1px;
  margin-bottom: 3px;
}

.contact-value {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-primary);
  transition: var(--transition);
}

.contact-value:hover {
  color: var(--cyan);
}

/* ---- Contact Form ---- */
.contact-form {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  padding: 36px;
}

.form-group {
  margin-bottom: 20px;
}

.form-group label {
  display: block;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 8px;
}

.form-group input,
.form-group textarea {
  width: 100%;
  background: var(--bg-primary);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 12px 16px;
  color: var(--text-primary);
  font-size: 0.9rem;
  font-family: var(--font-sans);
  transition: var(--transition);
  resize: vertical;
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--cyan-dim);
  box-shadow: 0 0 0 3px rgba(0, 229, 255, 0.08);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
  color: var(--text-muted);
}

.form-status {
  margin-top: 16px;
  text-align: center;
  font-size: 0.875rem;
  min-height: 20px;
}

.form-status.success { color: var(--green); }
.form-status.error   { color: var(--red); }

/* ======================================
   FOOTER
====================================== */
.footer {
  position: relative;
  z-index: 1;
  background: var(--bg-primary);
  border-top: 1px solid var(--border);
  padding: 48px 0;
}

.footer-content {
  text-align: center;
}

.footer-logo {
  font-family: var(--font-mono);
  font-size: 1.4rem;
  font-weight: 700;
  margin-bottom: 12px;
}

.footer-tagline {
  color: var(--text-muted);
  font-size: 0.875rem;
  margin-bottom: 20px;
}

.footer-links {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 16px;
  margin-bottom: 20px;
  flex-wrap: wrap;
}

.footer-links a {
  color: var(--text-secondary);
  font-size: 0.875rem;
  transition: var(--transition);
}

.footer-links a:hover { color: var(--cyan); }
.footer-links span { color: var(--text-muted); }

.footer-copy {
  font-size: 0.8rem;
  color: var(--text-muted);
}

/* ======================================
   ANIMATIONS
====================================== */
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(30px); }
  to   { opacity: 1; transform: translateY(0); }
}

@keyframes fadeInDown {
  from { opacity: 0; transform: translateY(-20px); }
  to   { opacity: 1; transform: translateY(0); }
}

@keyframes fadeInRight {
  from { opacity: 0; transform: translateX(40px); }
  to   { opacity: 1; transform: translateX(0); }
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50%       { opacity: 0.6; transform: scale(1.3); }
}

@keyframes float {
  0%, 100% { transform: translateY(0px); }
  50%       { transform: translateY(-10px); }
}

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

/* ======================================
   RESPONSIVE
====================================== */
@media (max-width: 1024px) {
  .hero {
    padding: 100px 40px 60px;
    gap: 32px;
  }
  .about-grid { grid-template-columns: 1fr; }
  .cert-grid  { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
  .navbar { padding: 0 20px; }

  .nav-links {
    display: none;
    position: fixed;
    top: 70px; left: 0; right: 0;
    flex-direction: column;
    background: rgba(8, 13, 26, 0.98);
    backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--border);
    padding: 20px;
    gap: 4px;
  }

  .nav-links.open { display: flex; }
  .nav-toggle { display: flex; }

  .hero {
    flex-direction: column;
    text-align: center;
    padding: 100px 24px 60px;
    min-height: auto;
  }

  .hero-cta { justify-content: center; }
  .hero-stats { justify-content: center; }

  .hero-visual {
    order: -1;
  }

  .avatar-container { width: 200px; height: 200px; }

  .skills-categories  { grid-template-columns: 1fr; }
  .projects-grid      { grid-template-columns: 1fr; }
  .project-card-wide  { grid-column: span 1; }
  .cert-grid          { grid-template-columns: repeat(2, 1fr); }
  .contact-grid       { grid-template-columns: 1fr; }

  .floating-badge {
    display: none;
  }
}

@media (max-width: 480px) {
  .cert-grid { grid-template-columns: 1fr 1fr; }
  .hero-title { font-size: 2.2rem; }
}

/* ===== NETWORK TOOLS ===== */
.tools-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 2rem;
}

.tool-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 2rem;
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
  transition: border-color 0.3s, transform 0.3s, box-shadow 0.3s;
}
.tool-card:hover {
  border-color: rgba(0,229,255,0.45);
  transform: translateY(-4px);
  box-shadow: 0 8px 40px rgba(0,229,255,0.08);
}

.tool-header {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.tool-icon {
  width: 52px; height: 52px;
  background: rgba(0,229,255,0.1);
  border: 1px solid rgba(0,229,255,0.35);
  border-radius: 14px;
  display: flex; align-items: center; justify-content: center;
  color: var(--cyan);
  flex-shrink: 0;
}

.tool-title {
  font-size: 1.2rem;
  font-weight: 800;
  color: var(--text-primary);
  flex: 1;
}

.tool-badge {
  font-size: 0.7rem;
  font-weight: 700;
  font-family: 'JetBrains Mono', monospace;
  letter-spacing: 0.1em;
  color: var(--cyan);
  background: rgba(0,229,255,0.1);
  border: 1px solid rgba(0,229,255,0.3);
  padding: 4px 12px;
  border-radius: 20px;
}

.tool-desc {
  font-size: 0.92rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

.tool-input-row {
  display: flex;
  gap: 0.75rem;
}

.tool-input {
  flex: 1;
  background: rgba(0,0,0,0.35);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 0.7rem 1rem;
  color: var(--text-primary);
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.9rem;
  outline: none;
  transition: border-color 0.2s, box-shadow 0.2s;
}
.tool-input:focus {
  border-color: var(--cyan);
  box-shadow: 0 0 0 3px rgba(0,229,255,0.08);
}
.tool-input::placeholder { color: var(--text-muted); }

.tool-btn {
  display: flex; align-items: center; gap: 8px;
  background: linear-gradient(135deg, var(--cyan), var(--blue));
  color: #000;
  border: none;
  border-radius: 10px;
  padding: 0.7rem 1.4rem;
  font-size: 0.9rem;
  font-weight: 700;
  cursor: pointer;
  white-space: nowrap;
  transition: opacity 0.2s, transform 0.1s;
}
.tool-btn:hover { opacity: 0.85; }
.tool-btn:active { transform: scale(0.97); }
.tool-btn:disabled { opacity: 0.45; cursor: not-allowed; }
.tool-btn-full { width: 100%; justify-content: center; padding: 0.85rem; }

.tool-output {
  background: #070b18;
  border: 1px solid rgba(0,229,255,0.15);
  border-radius: 12px;
  padding: 1rem 1.25rem;
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.85rem;
  color: #a8c0d8;
  min-height: 180px;
  max-height: 300px;
  overflow-y: auto;
  white-space: pre-wrap;
  word-break: break-all;
  line-height: 1.7;
  flex: 1;
}
.tool-output .tool-placeholder { color: rgba(160,180,204,0.35); font-style: italic; }
.tool-output .t-success { color: #4ade80; }
.tool-output .t-warn    { color: #facc15; }
.tool-output .t-running { color: var(--cyan); animation: blink 0.8s infinite; }

.speed-result {
  text-align: center;
  padding: 0.75rem 0 0.25rem;
  border-top: 1px solid var(--border);
}
.speed-number {
  font-size: 4rem;
  font-weight: 900;
  font-family: 'JetBrains Mono', monospace;
  background: linear-gradient(135deg, var(--cyan), var(--blue));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1;
}
.speed-label {
  font-size: 0.85rem;
  color: var(--text-muted);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  margin-top: 6px;
}

@media (max-width: 1024px) {
  .tools-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 768px) {
  .tools-grid { grid-template-columns: 1fr; }
}