/* Page-Specific Stylesheet - Hero, About Journey, Skills Tabs, Contact Forms, and 404 Canvas */

/* ==========================================
   1. HERO SECTION (HOME PAGE)
   ========================================== */
.hero-section {
  min-height: 100vh;
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  align-items: center;
  gap: var(--sp-48);
  padding-top: 100px; /* Space for navbar */
  position: relative;
}

.hero-content {
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.hero-greeting {
  font-family: var(--font-headings);
  font-size: var(--fs-md);
  font-weight: 600;
  color: var(--color-accent);
  text-transform: uppercase;
  letter-spacing: 2px;
  margin-bottom: var(--sp-12);
  display: flex;
  align-items: center;
  gap: var(--sp-8);
}

.hero-greeting::before {
  content: '';
  display: inline-block;
  width: 12px;
  height: 12px;
  background-color: var(--color-accent);
  border-radius: 50%;
  box-shadow: 0 0 10px var(--color-accent);
}

.hero-name {
  font-family: var(--font-headings);
  font-size: var(--fs-5xl);
  font-weight: 700;
  line-height: 1.1;
  margin-bottom: var(--sp-16);
  background: linear-gradient(to right, var(--color-text) 30%, var(--color-muted) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-tagline {
  font-size: var(--fs-xl);
  font-weight: 500;
  color: var(--color-primary);
  margin-bottom: var(--sp-24);
}

.hero-intro {
  font-size: var(--fs-md);
  color: var(--color-muted);
  max-width: 520px;
  margin-bottom: var(--sp-32);
}

/* CSS Hero Illustration Dashboard */
.hero-visual {
  display: flex;
  justify-content: center;
  align-items: center;
}

.dashboard-mockup {
  width: 100%;
  max-width: 440px;
  height: 380px;
  background: hsla(var(--surface-hsl), 0.7);
  border: 1px solid var(--color-border);
  border-radius: var(--r-16);
  box-shadow: var(--shadow-premium);
  display: flex;
  flex-direction: column;
  overflow: hidden;
  position: relative;
}

.dashboard-mockup::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  border-radius: inherit;
  background: var(--glass-reflection);
  pointer-events: none;
  z-index: 2;
}

.mockup-header {
  height: 40px;
  background-color: hsla(var(--border-hsl), 0.2);
  border-bottom: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  padding: 0 var(--sp-16);
  justify-content: space-between;
}

.mockup-dots {
  display: flex;
  gap: var(--sp-8);
}

.mockup-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
}

.mockup-dot-red { background-color: #EF4444; }
.mockup-dot-yellow { background-color: #F59E0B; }
.mockup-dot-green { background-color: #10B981; }

.mockup-title {
  font-family: var(--font-headings);
  font-size: var(--fs-xs);
  color: var(--color-muted);
}

.mockup-body {
  flex: 1;
  padding: var(--sp-24);
  font-family: 'Courier New', Courier, monospace;
  font-size: var(--fs-sm);
  color: var(--color-text);
  display: flex;
  flex-direction: column;
  gap: var(--sp-12);
  position: relative;
}

.code-line {
  display: flex;
  gap: var(--sp-12);
}

.code-num {
  color: hsla(var(--text-hsl), 0.2);
  user-select: none;
}

.code-text {
  color: var(--color-text);
}

.code-accent { color: var(--color-accent); }
.code-keyword { color: var(--color-secondary); }
.code-string { color: var(--color-primary); }

.dashboard-widget {
  margin-top: auto;
  background: hsla(var(--bg-hsl), 0.6);
  border: 1px solid var(--color-border);
  border-radius: var(--r-8);
  padding: var(--sp-12);
  display: flex;
  justify-content: space-between;
  align-items: center;
  box-shadow: var(--shadow-subtle);
}

.widget-title {
  font-size: var(--fs-xs);
  color: var(--color-muted);
}

.widget-val {
  font-size: var(--fs-sm);
  font-weight: 700;
  color: var(--color-accent);
  display: flex;
  align-items: center;
  gap: var(--sp-4);
}

.widget-pulse {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background-color: var(--color-accent);
  animation: pulse-glow 2s infinite;
}

@keyframes pulse-glow {
  0% { transform: scale(0.9); opacity: 0.6; }
  50% { transform: scale(1.2); opacity: 1; box-shadow: 0 0 10px var(--color-accent); }
  100% { transform: scale(0.9); opacity: 0.6; }
}

/* ==========================================
   2. ABOUT SECTION
   ========================================== */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--sp-48);
  align-items: flex-start;
  margin-top: 120px;
}

.about-intro-text {
  font-size: var(--fs-md);
  color: var(--color-muted);
  margin-bottom: var(--sp-24);
}

.about-intro-text strong {
  color: var(--color-text);
  font-weight: 600;
}

/* Stats Counter Grid */
.stats-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--sp-24);
  margin-top: var(--sp-32);
}

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

.stat-number {
  font-family: var(--font-headings);
  font-size: var(--fs-4xl);
  font-weight: 700;
  background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  line-height: 1;
  margin-bottom: var(--sp-8);
}

.stat-label {
  font-size: var(--fs-sm);
  color: var(--color-muted);
  font-weight: 500;
}

/* Journey Timeline */
.timeline-container {
  position: relative;
  max-width: 800px;
  margin: var(--sp-64) auto 0 auto;
  padding: var(--sp-24) 0;
}

.timeline-container::before {
  content: '';
  position: absolute;
  top: 0;
  bottom: 0;
  left: 50%;
  width: 2px;
  background: linear-gradient(to bottom, var(--color-primary), var(--color-secondary), transparent);
  transform: translateX(-50%);
}

.timeline-item {
  width: 50%;
  margin-bottom: var(--sp-48);
  position: relative;
}

.timeline-item-left {
  left: 0;
  padding-right: var(--sp-48);
}

.timeline-item-right {
  left: 50%;
  padding-left: var(--sp-48);
}

.timeline-dot {
  position: absolute;
  top: 12px;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background-color: var(--color-bg);
  border: 3px solid var(--color-primary);
  z-index: 10;
}

.timeline-item-left .timeline-dot {
  right: -8px;
}

.timeline-item-right .timeline-dot {
  left: -8px;
  border-color: var(--color-secondary);
}

.timeline-card {
  padding: var(--sp-24);
}

.timeline-date {
  font-family: var(--font-headings);
  font-size: var(--fs-sm);
  font-weight: 700;
  color: var(--color-accent);
  margin-bottom: var(--sp-8);
}

.timeline-title {
  font-family: var(--font-headings);
  font-size: var(--fs-lg);
  font-weight: 600;
  margin-bottom: var(--sp-8);
}

.timeline-desc {
  font-size: var(--fs-sm);
  color: var(--color-muted);
}

/* ==========================================
   3. SKILLS SECTION
   ========================================== */
.skills-page-container {
  margin-top: 120px;
}

.skills-tab-nav {
  display: flex;
  justify-content: center;
  gap: var(--sp-12);
  margin-bottom: var(--sp-48);
  flex-wrap: wrap;
}

.skills-tab-btn {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  padding: var(--sp-12) var(--sp-24);
  border-radius: var(--r-8);
  color: var(--color-text);
  font-family: var(--font-headings);
  font-size: var(--fs-sm);
  font-weight: 500;
  cursor: pointer;
  transition: all var(--t-fast) var(--ease-premium);
}

.skills-tab-btn:hover {
  border-color: var(--color-primary);
}

.skills-tab-btn.active-tab {
  background-color: var(--color-primary);
  color: #fff;
  border-color: var(--color-primary);
  box-shadow: 0 4px 12px rgba(37, 99, 235, 0.3);
}

.skills-content-panel {
  display: none;
}

.skills-content-panel.active-panel {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--sp-24);
  animation: panel-fade-in var(--t-normal) var(--ease-premium);
}

@keyframes panel-fade-in {
  from { opacity: 0; transform: translateY(15px); }
  to { opacity: 1; transform: translateY(0); }
}

.skill-item-card {
  display: flex;
  flex-direction: column;
  gap: var(--sp-12);
}

.skill-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.skill-title {
  font-family: var(--font-headings);
  font-size: var(--fs-md);
  font-weight: 600;
}

.skill-percent {
  font-size: var(--fs-sm);
  color: var(--color-accent);
  font-weight: 600;
}

.skill-bar-bg {
  height: 6px;
  background-color: hsla(var(--border-hsl), 0.2);
  border-radius: var(--r-full);
  overflow: hidden;
  position: relative;
}

.skill-bar-fill {
  position: absolute;
  top: 0;
  left: 0;
  height: 100%;
  border-radius: var(--r-full);
  background: linear-gradient(90deg, var(--color-primary), var(--color-accent));
  width: 0; /* Animated via JS script */
  transition: width 1s var(--ease-premium);
}

.skill-desc {
  font-size: var(--fs-sm);
  color: var(--color-muted);
  line-height: 1.5;
}

/* ==========================================
   4. EDUCATION SECTION
   ========================================== */
.education-page-container {
  margin-top: 120px;
}

.edu-timeline {
  display: flex;
  flex-direction: column;
  gap: var(--sp-32);
  max-width: 800px;
  margin: 0 auto;
  position: relative;
  padding-left: var(--sp-32);
}

.edu-timeline::before {
  content: '';
  position: absolute;
  top: 0;
  bottom: 0;
  left: 7px;
  width: 2px;
  background-color: var(--color-border);
}

.edu-timeline-item {
  position: relative;
}

.edu-timeline-dot {
  position: absolute;
  left: -33px;
  top: 12px;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background-color: var(--color-bg);
  border: 3px solid var(--color-primary);
  z-index: 10;
}

.edu-timeline-item:hover .edu-timeline-dot {
  background-color: var(--color-primary);
  box-shadow: 0 0 10px var(--color-primary);
}

.edu-card {
  padding: var(--sp-32);
}

.edu-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--sp-12);
  flex-wrap: wrap;
  gap: var(--sp-8);
}

.edu-date {
  font-family: var(--font-headings);
  font-size: var(--fs-sm);
  font-weight: 700;
  color: var(--color-accent);
}

.edu-inst {
  font-size: var(--fs-sm);
  color: var(--color-primary);
  font-weight: 600;
}

.edu-title {
  font-family: var(--font-headings);
  font-size: var(--fs-xl);
  font-weight: 700;
  margin-bottom: var(--sp-16);
}

.edu-desc {
  font-size: var(--fs-sm);
  color: var(--color-muted);
  margin-bottom: var(--sp-24);
}

.cert-badges {
  display: flex;
  gap: var(--sp-8);
  flex-wrap: wrap;
}

.cert-badge {
  background-color: hsla(var(--accent-hsl), 0.1);
  border: 1px solid hsla(var(--accent-hsl), 0.2);
  padding: var(--sp-4) var(--sp-12);
  border-radius: var(--r-full);
  font-size: var(--fs-xs);
  color: var(--color-accent);
  font-weight: 500;
}

/* ==========================================
   5. CONTACT SECTION
   ========================================== */
.contact-page-container {
  margin-top: 120px;
}

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: var(--sp-48);
  align-items: flex-start;
}

.contact-info-panel {
  display: flex;
  flex-direction: column;
  gap: var(--sp-24);
}

.contact-meta-card {
  display: flex;
  align-items: flex-start;
  gap: var(--sp-16);
}

.meta-icon-container {
  width: 48px;
  height: 48px;
  border-radius: var(--r-8);
  background-color: hsla(var(--primary-hsl), 0.1);
  border: 1px solid hsla(var(--primary-hsl), 0.2);
  display: flex;
  justify-content: center;
  align-items: center;
  color: var(--color-primary);
  flex-shrink: 0;
}

.meta-info-title {
  font-family: var(--font-headings);
  font-size: var(--fs-sm);
  color: var(--color-muted);
  text-transform: uppercase;
  letter-spacing: 1px;
}

.meta-info-val {
  font-size: var(--fs-md);
  font-weight: 600;
  color: var(--color-text);
}

.email-copy-wrapper {
  display: flex;
  align-items: center;
  gap: var(--sp-12);
  margin-top: var(--sp-4);
}

.btn-icon-only {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  width: 32px;
  height: 32px;
  border-radius: var(--r-8);
  display: flex;
  justify-content: center;
  align-items: center;
  color: var(--color-muted);
  cursor: pointer;
  transition: all var(--t-fast) var(--ease-premium);
}

.btn-icon-only:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
}

.copy-toast {
  font-size: var(--fs-xs);
  color: var(--color-accent);
  opacity: 0;
  transition: opacity var(--t-fast) ease;
}

.copy-toast.show-toast {
  opacity: 1;
}

/* Form Styling */
.contact-form-panel {
  padding: var(--sp-32);
}

.form-group-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--sp-24);
  margin-bottom: var(--sp-24);
}

.form-group {
  position: relative;
  margin-bottom: var(--sp-24);
}

.form-input {
  width: 100%;
  padding: var(--sp-16);
  background-color: hsla(var(--bg-hsl), 0.5);
  border: 1px solid var(--color-border);
  border-radius: var(--r-8);
  font-family: var(--font-body);
  font-size: var(--fs-base);
  color: var(--color-text);
  transition: border-color var(--t-fast) var(--ease-premium), box-shadow var(--t-fast) var(--ease-premium);
}

.form-input:focus {
  border-color: var(--color-accent);
  box-shadow: 0 0 10px hsla(var(--accent-hsl), 0.15);
  outline: none;
}

.form-label {
  position: absolute;
  left: var(--sp-16);
  top: 50%;
  transform: translateY(-50%);
  color: var(--color-muted);
  pointer-events: none;
  font-size: var(--fs-base);
  transition: all var(--t-fast) var(--ease-premium);
}

.form-textarea {
  min-height: 150px;
  resize: vertical;
}

.form-group-textarea .form-label {
  top: 24px;
}

/* Floating Label Effects */
.form-input:focus ~ .form-label,
.form-input:not(:placeholder-shown) ~ .form-label {
  top: 0;
  left: var(--sp-12);
  transform: translateY(-50%) scale(0.85);
  background-color: var(--color-surface-raw);
  padding: 0 var(--sp-8);
  color: var(--color-accent);
}

.form-error-msg {
  font-size: var(--fs-xs);
  color: #EF4444;
  margin-top: var(--sp-4);
  display: none;
}

.form-input:invalid:not(:placeholder-shown) {
  border-color: #EF4444;
}

/* Success Animation Overlays */
.form-success-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: var(--color-surface-raw);
  border-radius: var(--r-16);
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: var(--sp-16);
  opacity: 0;
  pointer-events: none;
  z-index: 10;
  transition: opacity var(--t-normal) var(--ease-premium);
}

.form-success-overlay.show-overlay {
  opacity: 1;
  pointer-events: all;
}

.success-icon-ring {
  width: 64px;
  height: 64px;
  border-radius: 50%;
  border: 3px solid var(--color-accent);
  display: flex;
  justify-content: center;
  align-items: center;
  color: var(--color-accent);
  animation: scale-up-bounce var(--t-slow) var(--ease-premium) forwards;
}

@keyframes scale-up-bounce {
  0% { transform: scale(0.5); opacity: 0; }
  70% { transform: scale(1.1); }
  100% { transform: scale(1); opacity: 1; }
}

/* ==========================================
   6. 404 PAGE
   ========================================== */
.error-page-container {
  min-height: calc(100vh - 180px);
  display: flex;
  justify-content: center;
  align-items: center;
  text-align: center;
  padding: var(--sp-96) var(--sp-24);
}

.error-content {
  max-width: 480px;
}

.error-code {
  font-family: var(--font-headings);
  font-size: 8rem;
  font-weight: 700;
  line-height: 1;
  background: linear-gradient(135deg, var(--color-primary), var(--color-secondary), var(--color-accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  margin-bottom: var(--sp-16);
  position: relative;
  display: inline-block;
  animation: error-shimmer 4s infinite linear;
}

@keyframes error-shimmer {
  0% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
  100% { background-position: 0% 50%; }
}

.error-title {
  font-family: var(--font-headings);
  font-size: var(--fs-2xl);
  font-weight: 700;
  margin-bottom: var(--sp-12);
}

.error-desc {
  color: var(--color-muted);
  margin-bottom: var(--sp-32);
}

/* ==========================================
   RESPONSIVE OVERRIDES FOR PAGES
   ========================================== */
@media (max-width: 1024px) {
  .hero-section {
    grid-template-columns: 1fr;
    text-align: center;
    gap: var(--sp-64);
    padding-top: 120px;
    padding-bottom: var(--sp-64);
  }

  .hero-intro {
    margin-left: auto;
    margin-right: auto;
  }
  
  .btn-container {
    justify-content: center;
  }
  
  .about-grid {
    grid-template-columns: 1fr;
    gap: var(--sp-48);
  }
  
  .contact-grid {
    grid-template-columns: 1fr;
    gap: var(--sp-48);
  }
}

@media (max-width: 768px) {
  .hero-name {
    font-size: var(--fs-4xl);
  }
  
  .timeline-container::before {
    left: 20px;
    transform: none;
  }
  
  .timeline-item {
    width: 100%;
    left: 0 !important;
    padding-left: var(--sp-48) !important;
    padding-right: 0 !important;
  }
  
  .timeline-dot {
    left: 12px !important;
    right: auto !important;
  }
  
  .form-group-grid {
    grid-template-columns: 1fr;
    gap: 0;
  }
}

@media (max-width: 480px) {
  .hero-name {
    font-size: var(--fs-3xl);
  }
  
  .edu-card, .contact-form-panel {
    padding: var(--sp-24) var(--sp-16);
  }
  
  .edu-meta {
    flex-direction: column;
    align-items: flex-start;
  }
}