/* ==========================================================================
   Backend Developer Portfolio - Custom Styling
   Integrated with Bootstrap 5 (Installed via npm)
   ========================================================================== */

:root {
  --bg-main: #090d16;
  --bg-card: #0f172a;
  --bg-card-hover: #17223b;
  --bg-subtle: #1e293b;
  --border-color: rgba(255, 255, 255, 0.08);
  --border-glow: rgba(56, 189, 248, 0.3);
  --text-main: #f8fafc;
  --text-muted: #94a3b8;
  --text-dim: #64748b;
  --accent-cyan: #38bdf8;
  --accent-emerald: #10b981;
  --accent-purple: #a855f7;
  --accent-amber: #f59e0b;
  --code-bg: #030712;
  --font-mono: 'JetBrains Mono', 'Fira Code', 'SF Mono', Menlo, Monaco, Consolas, monospace;
}

[data-bs-theme="light"] {
  --bg-main: #f8fafc;
  --bg-card: #ffffff;
  --bg-card-hover: #f1f5f9;
  --bg-subtle: #e2e8f0;
  --border-color: rgba(0, 0, 0, 0.08);
  --border-glow: rgba(2, 132, 199, 0.3);
  --text-main: #0f172a;
  --text-muted: #475569;
  --text-dim: #94a3b8;
  --accent-cyan: #0284c7;
  --accent-emerald: #059669;
  --accent-purple: #7c3aed;
  --accent-amber: #d97706;
  --code-bg: #1e293b;
}

/* Global resets & typography */
body {
  background-color: var(--bg-main);
  color: var(--text-main);
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  overflow-x: hidden;
  transition: background-color 0.3s ease, color 0.3s ease;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

main {
  flex: 1 0 auto;
}

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

/* Gradient text utility */
.gradient-text {
  background: linear-gradient(135deg, var(--accent-cyan) 0%, #60a5fa 50%, var(--accent-purple) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.gradient-text-emerald {
  background: linear-gradient(135deg, var(--accent-emerald) 0%, #34d399 50%, var(--accent-cyan) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

/* Navbar Customization */
.navbar-custom {
  background-color: rgba(9, 13, 22, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-color);
  transition: all 0.3s ease;
}

[data-bs-theme="light"] .navbar-custom {
  background-color: rgba(248, 250, 252, 0.88);
}

.navbar-brand-logo {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 1.15rem;
  letter-spacing: -0.5px;
}

.nav-link {
  color: var(--text-muted) !important;
  font-weight: 500;
  padding: 0.5rem 0.9rem !important;
  border-radius: 6px;
  transition: all 0.2s ease;
}

.nav-link:hover {
  color: var(--text-main) !important;
  background-color: rgba(255, 255, 255, 0.05);
}

.nav-link.active {
  color: var(--accent-cyan) !important;
  background-color: rgba(56, 189, 248, 0.1);
}

/* Pulse animation for system status */
.status-indicator {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: rgba(16, 185, 129, 0.12);
  border: 1px solid rgba(16, 185, 129, 0.25);
  padding: 0.3rem 0.75rem;
  border-radius: 9999px;
  font-size: 0.82rem;
  color: #34d399;
}

.pulse-dot {
  width: 8px;
  height: 8px;
  background-color: #10b981;
  border-radius: 50%;
  box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.7);
  animation: pulse-ring 2s infinite cubic-bezier(0.4, 0, 0.6, 1);
}

@keyframes pulse-ring {
  0% {
    box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.7);
  }
  70% {
    box-shadow: 0 0 0 8px rgba(16, 185, 129, 0);
  }
  100% {
    box-shadow: 0 0 0 0 rgba(16, 185, 129, 0);
  }
}

/* Glassmorphic & Developer Cards */
.card-dev {
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  transition: transform 0.25s ease, border-color 0.25s ease, box-shadow 0.25s ease;
  overflow: hidden;
}

.card-dev:hover {
  transform: translateY(-4px);
  border-color: var(--border-glow);
  box-shadow: 0 12px 30px -10px rgba(0, 0, 0, 0.4);
}

/* Terminal & Code Window */
.terminal-window {
  background-color: var(--code-bg);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  box-shadow: 0 20px 40px -15px rgba(0, 0, 0, 0.6);
  overflow: hidden;
  font-family: var(--font-mono);
}

.terminal-header {
  background-color: rgba(255, 255, 255, 0.03);
  border-bottom: 1px solid var(--border-color);
  padding: 0.65rem 1rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.terminal-dots {
  display: flex;
  gap: 6px;
}

.terminal-dot {
  width: 11px;
  height: 11px;
  border-radius: 50%;
}

.terminal-dot.red { background-color: #ef4444; }
.terminal-dot.yellow { background-color: #f59e0b; }
.terminal-dot.green { background-color: #10b981; }

.terminal-title {
  color: var(--text-dim);
  font-size: 0.8rem;
}

/* Linux Terminal Window Controls */
.terminal-linux-actions {
  display: flex;
  align-items: center;
  gap: 6px;
}

.linux-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 22px;
  height: 22px;
  border-radius: 4px;
  color: var(--text-muted);
  font-size: 0.72rem;
  transition: all 0.15s ease;
  cursor: default;
  user-select: none;
}

.linux-btn:hover {
  background-color: rgba(255, 255, 255, 0.08);
  color: var(--text-light);
}

.linux-btn.linux-btn-close:hover {
  background-color: #ef4444;
  color: #ffffff;
}

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

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

/* Stack Items in Engineering Pillar Cards */
.stack-item {
  transition: all 0.2s ease;
}

.stack-item:hover {
  border-color: rgba(56, 189, 248, 0.4) !important;
  background-color: rgba(56, 189, 248, 0.06) !important;
  transform: translateY(-2px);
}

.stack-icon-wrapper {
  width: 48px;
  height: 38px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.stack-icon-wrapper img {
  max-height: 38px;
  max-width: 48px;
  width: auto;
  height: auto;
  object-fit: contain;
}

.terminal-body {
  padding: 1.25rem;
  font-size: 0.88rem;
  line-height: 1.6;
  color: #cbd5e1;
}

.terminal-prompt {
  color: #38bdf8;
}

.terminal-cmd {
  color: #f8fafc;
  font-weight: 600;
}

.terminal-json-key {
  color: #a855f7;
}

.terminal-json-string {
  color: #34d399;
}

.terminal-json-number {
  color: #f59e0b;
}

/* Tech Badges / Chips */
.tech-chip {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  background-color: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border-color);
  color: var(--text-muted);
  font-size: 0.8rem;
  padding: 0.35rem 0.75rem;
  border-radius: 6px;
  font-family: var(--font-mono);
  transition: all 0.2s ease;
}

.tech-chip:hover {
  background-color: rgba(56, 189, 248, 0.1);
  border-color: rgba(56, 189, 248, 0.4);
  color: var(--accent-cyan);
}

.tech-chip-active {
  background-color: rgba(56, 189, 248, 0.15) !important;
  border-color: var(--accent-cyan) !important;
  color: var(--accent-cyan) !important;
}

/* Stat Box */
.stat-box {
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 1.5rem;
  text-align: center;
}

.stat-value {
  font-family: var(--font-mono);
  font-size: 2.2rem;
  font-weight: 800;
  color: var(--accent-cyan);
  line-height: 1;
  margin-bottom: 0.5rem;
}

.stat-label {
  color: var(--text-muted);
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

/* Buttons */
.btn-primary-dev {
  background: linear-gradient(135deg, #0284c7 0%, #2563eb 100%);
  border: none;
  color: #ffffff;
  font-weight: 600;
  padding: 0.65rem 1.4rem;
  border-radius: 8px;
  transition: all 0.25s ease;
  box-shadow: 0 4px 14px rgba(2, 132, 199, 0.3);
}

.btn-primary-dev:hover {
  background: linear-gradient(135deg, #0369a1 0%, #1d4ed8 100%);
  color: #ffffff;
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(2, 132, 199, 0.45);
}

.btn-secondary-dev {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.15);
  color: var(--text-main);
  font-weight: 600;
  padding: 0.65rem 1.4rem;
  border-radius: 8px;
  transition: all 0.25s ease;
}

.btn-secondary-dev:hover {
  background: rgba(255, 255, 255, 0.12);
  border-color: rgba(255, 255, 255, 0.35);
  color: #ffffff;
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
}

[data-bs-theme="light"] .btn-secondary-dev {
  background: #f1f5f9;
  border: 1px solid #cbd5e1;
  color: #1e293b;
}

[data-bs-theme="light"] .btn-secondary-dev:hover {
  background: #e2e8f0;
  border-color: #94a3b8;
  color: #0f172a;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
}

/* Contact CTA Button */
.btn-contact-dev {
  background: rgba(56, 189, 248, 0.08);
  border: 1px solid rgba(56, 189, 248, 0.35);
  color: #f8fafc;
  font-weight: 600;
  padding: 0.65rem 1.4rem;
  border-radius: 8px;
  transition: all 0.25s ease;
  box-shadow: 0 4px 12px rgba(2, 132, 199, 0.15);
}

.btn-contact-dev i {
  color: var(--accent-cyan);
  transition: color 0.25s ease;
}

.btn-contact-dev:hover {
  background: linear-gradient(135deg, #0284c7 0%, #0ea5e9 100%);
  border-color: #38bdf8;
  color: #ffffff !important;
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(56, 189, 248, 0.4);
}

.btn-contact-dev:hover i,
.btn-contact-dev:hover span {
  color: #ffffff !important;
}

[data-bs-theme="light"] .btn-contact-dev {
  background: rgba(2, 132, 199, 0.08);
  border: 1px solid rgba(2, 132, 199, 0.35);
  color: #0369a1;
}

[data-bs-theme="light"] .btn-contact-dev:hover {
  background: linear-gradient(135deg, #0284c7 0%, #0369a1 100%);
  border-color: #0284c7;
  color: #ffffff !important;
  box-shadow: 0 4px 14px rgba(2, 132, 199, 0.3);
}

/* WhatsApp CTA Button */
.btn-whatsapp-dev {
  background: rgba(16, 185, 129, 0.1);
  border: 1px solid rgba(16, 185, 129, 0.35);
  color: #f8fafc;
  font-weight: 600;
  padding: 0.65rem 1.4rem;
  border-radius: 8px;
  transition: all 0.25s ease;
  box-shadow: 0 4px 12px rgba(16, 185, 129, 0.15);
}

.btn-whatsapp-dev i,
.btn-whatsapp-dev .bi-whatsapp {
  color: #25d366;
  transition: color 0.25s ease;
}

.btn-whatsapp-dev:hover {
  background: linear-gradient(135deg, #16a34a 0%, #22c55e 100%);
  border-color: #22c55e;
  color: #ffffff !important;
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(34, 197, 94, 0.4);
}

.btn-whatsapp-dev:hover i,
.btn-whatsapp-dev:hover .bi-whatsapp,
.btn-whatsapp-dev:hover span {
  color: #ffffff !important;
}

[data-bs-theme="light"] .btn-whatsapp-dev {
  background: rgba(16, 185, 129, 0.08);
  border: 1px solid rgba(16, 185, 129, 0.35);
  color: #047857;
}

[data-bs-theme="light"] .btn-whatsapp-dev:hover {
  background: linear-gradient(135deg, #15803d 0%, #16a34a 100%);
  border-color: #15803d;
  color: #ffffff !important;
  box-shadow: 0 4px 14px rgba(22, 163, 74, 0.3);
}

/* Timeline component */
.timeline-stem {
  position: relative;
  padding-left: 2rem;
  border-left: 2px solid var(--border-color);
}

.timeline-stem::before {
  content: '';
  position: absolute;
  left: -7px;
  top: 4px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background-color: var(--accent-cyan);
  box-shadow: 0 0 10px var(--accent-cyan);
}

/* Skill Progress Bar */
.skill-bar-bg {
  height: 6px;
  background-color: var(--bg-subtle);
  border-radius: 9999px;
  overflow: hidden;
}

.skill-bar-fill {
  height: 100%;
  border-radius: 9999px;
  background: linear-gradient(90deg, var(--accent-cyan), var(--accent-purple));
}

/* Footer Styling */
.footer-custom {
  background-color: rgba(11, 15, 25, 0.95);
  border-top: 1px solid var(--border-color);
  padding: 3rem 0 2rem;
}

[data-bs-theme="light"] .footer-custom {
  background-color: #f1f5f9;
}

/* Code Snippet block */
pre.code-block {
  background-color: var(--code-bg);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 1rem;
  color: #e2e8f0;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  overflow-x: auto;
}

/* Custom Accent Color Utilities for Tech Stack Badges */
.bg-purple { background-color: #8b5cf6 !important; }
.text-purple { color: #8b5cf6 !important; }
.bg-orange { background-color: #f97316 !important; }
.text-orange { color: #f97316 !important; }
.bg-teal { background-color: #20c997 !important; }
.text-teal { color: #20c997 !important; }