/* UI Components Design System */

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.625rem;
  padding: 0.75rem 1.5rem;
  font-size: 0.9375rem;
  font-weight: 600;
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
  text-decoration: none;
  cursor: pointer;
  white-space: nowrap;
}

.btn svg {
  width: 18px;
  height: 18px;
  transition: transform var(--transition-fast);
}

.btn:hover svg {
  transform: translateX(2px);
}

.btn-primary {
  background: var(--gradient-accent);
  color: #ffffff;
  box-shadow: 0 4px 14px rgba(59, 130, 246, 0.35);
  border: 1px solid rgba(255, 255, 255, 0.15);
}

.btn-primary:hover {
  color: #ffffff;
  box-shadow: 0 6px 20px rgba(59, 130, 246, 0.5);
  transform: translateY(-2px);
}

.btn-secondary {
  background: var(--bg-elevated);
  color: var(--text-primary);
  border: 1px solid var(--border-medium);
  box-shadow: var(--shadow-sm);
}

.btn-secondary:hover {
  background: var(--bg-tertiary);
  border-color: var(--text-tertiary);
  color: var(--text-primary);
  transform: translateY(-2px);
}

.btn-accent {
  background: rgba(16, 185, 129, 0.15);
  color: var(--accent-secondary);
  border: 1px solid rgba(16, 185, 129, 0.3);
}

.btn-accent:hover {
  background: rgba(16, 185, 129, 0.25);
  color: var(--accent-secondary);
}

.btn-sm {
  padding: 0.45rem 0.875rem;
  font-size: 0.8125rem;
  border-radius: var(--radius-sm);
}

.btn-playstore {
  background: #000000;
  color: #ffffff;
  border: 1px solid rgba(255, 255, 255, 0.2);
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.6rem 1.15rem;
  border-radius: var(--radius-md);
  text-decoration: none;
  transition: transform var(--transition-fast), border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.btn-playstore:hover {
  border-color: rgba(255, 255, 255, 0.5);
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.4);
  transform: translateY(-2px);
  color: #ffffff;
}

.btn-playstore svg {
  width: 24px;
  height: 24px;
  flex-shrink: 0;
}

.playstore-text {
  display: flex;
  flex-direction: column;
  text-align: left;
  line-height: 1.1;
}

.playstore-sub {
  font-size: 0.625rem;
  text-transform: uppercase;
  color: #94a3b8;
  letter-spacing: 0.05em;
}

.playstore-main {
  font-size: 0.9375rem;
  font-weight: 700;
  color: #ffffff;
}

/* Theme Toggle Button */
.theme-toggle-btn {
  width: 38px;
  height: 38px;
  border-radius: var(--radius-md);
  background: var(--bg-card);
  border: 1px solid var(--border-medium);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-secondary);
  transition: all var(--transition-fast);
}

.theme-toggle-btn:hover {
  color: var(--text-primary);
  border-color: var(--text-tertiary);
  background: var(--bg-tertiary);
}

.theme-toggle-btn svg {
  width: 18px;
  height: 18px;
}

/* Cards */
.card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 1.75rem;
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  transition: transform var(--transition-normal), border-color var(--transition-normal), box-shadow var(--transition-normal);
  position: relative;
  display: flex;
  flex-direction: column;
}

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

.card-gradient-top {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  border-radius: var(--radius-lg) var(--radius-lg) 0 0;
  background: var(--gradient-accent);
  opacity: 0;
  transition: opacity var(--transition-normal);
}

.card:hover .card-gradient-top {
  opacity: 1;
}

/* App Showcase Card */
.app-card {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  height: 100%;
  padding: 0;
  overflow: hidden;
  position: relative;
}

.app-card-banner {
  height: 90px;
  position: relative;
  overflow: hidden;
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  padding: 0.875rem 1.25rem;
}

.app-banner-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(0, 0, 0, 0.2) 0%, rgba(0, 0, 0, 0.6) 100%);
  pointer-events: none;
}

.app-banner-meta {
  position: relative;
  z-index: 2;
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.app-banner-watermark {
  position: relative;
  z-index: 2;
  font-size: 0.6875rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: rgba(255, 255, 255, 0.85);
  background: rgba(0, 0, 0, 0.35);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  padding: 0.2rem 0.55rem;
  border-radius: var(--radius-sm);
  border: 1px solid rgba(255, 255, 255, 0.15);
}

.app-card-body {
  padding: 1.25rem 1.5rem 1.5rem;
  display: flex;
  flex-direction: column;
  flex: 1;
  justify-content: space-between;
}

.app-card-header {
  display: flex;
  align-items: flex-end;
  gap: 1.125rem;
  margin-top: -38px;
  margin-bottom: 1.25rem;
  position: relative;
  z-index: 3;
}

.app-icon-wrapper {
  width: 68px;
  height: 68px;
  border-radius: 18px;
  background: var(--bg-card);
  border: 3px solid var(--bg-card);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.35);
  overflow: hidden;
  position: relative;
  transition: transform var(--transition-normal);
}

.app-card:hover .app-icon-wrapper {
  transform: translateY(-2px) scale(1.04);
}

.app-icon-wrapper svg, .app-icon-wrapper img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.app-header-info {
  flex: 1;
}

.app-badge-row {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 0.35rem;
  flex-wrap: wrap;
}

.badge {
  font-size: 0.6875rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: 0.2rem 0.5rem;
  border-radius: var(--radius-sm);
}

.badge-live {
  background: rgba(16, 185, 129, 0.15);
  color: var(--accent-secondary);
  border: 1px solid rgba(16, 185, 129, 0.3);
}

.badge-dev {
  background: rgba(245, 158, 11, 0.15);
  color: var(--accent-amber);
  border: 1px solid rgba(245, 158, 11, 0.3);
}

.badge-archived {
  background: rgba(100, 116, 139, 0.15);
  color: var(--text-tertiary);
  border: 1px solid rgba(100, 116, 139, 0.3);
}

.badge-platform {
  background: var(--bg-tertiary);
  color: var(--text-secondary);
}

.app-title {
  font-size: 1.35rem;
  font-weight: 700;
  margin-bottom: 0.25rem;
}

.app-category {
  font-size: 0.8125rem;
  color: var(--text-tertiary);
}

.app-description {
  font-size: 0.9375rem;
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: 1.25rem;
}

.app-problem-box {
  background: var(--bg-glass-subtle);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 0.875rem 1rem;
  margin-bottom: 1.25rem;
}

.app-problem-label {
  font-size: 0.6875rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--accent-cyan);
  margin-bottom: 0.25rem;
}

.app-problem-text {
  font-size: 0.85rem;
  color: var(--text-secondary);
  line-height: 1.5;
}

.tech-tag-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin-bottom: 1.5rem;
}

.tech-tag {
  font-size: 0.75rem;
  font-weight: 500;
  padding: 0.2rem 0.6rem;
  background: var(--bg-secondary);
  color: var(--text-secondary);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
}

.app-card-actions {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  flex-wrap: wrap;
  margin-top: auto;
  padding-top: 1.25rem;
  border-top: 1px solid var(--border-subtle);
}

/* Filter Controls */
.filter-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 2.5rem;
  flex-wrap: wrap;
}

.filter-tabs {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  background: var(--bg-secondary);
  padding: 0.35rem;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-subtle);
}

.filter-tab {
  padding: 0.45rem 1rem;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--text-secondary);
  border-radius: var(--radius-sm);
  transition: all var(--transition-fast);
}

.filter-tab:hover {
  color: var(--text-primary);
}

.filter-tab.active {
  background: var(--accent-primary);
  color: #ffffff;
}

.search-box {
  position: relative;
  min-width: 240px;
}

.search-input {
  width: 100%;
  padding: 0.5rem 1rem 0.5rem 2.25rem;
  background: var(--bg-secondary);
  border: 1px solid var(--border-medium);
  border-radius: var(--radius-md);
  font-size: 0.875rem;
  color: var(--text-primary);
  transition: border-color var(--transition-fast);
}

.search-input:focus {
  border-color: var(--accent-primary);
}

.search-icon {
  position: absolute;
  left: 0.75rem;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-tertiary);
  width: 16px;
  height: 16px;
  pointer-events: none;
}

/* Tech Stack Category Cards */
.stack-category-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 1.75rem;
}

.stack-category-header {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 1.25rem;
}

.stack-category-icon {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-sm);
  background: rgba(59, 130, 246, 0.1);
  color: var(--accent-primary);
  display: flex;
  align-items: center;
  justify-content: center;
}

.stack-category-icon svg {
  width: 20px;
  height: 20px;
}

.stack-category-title {
  font-size: 1.15rem;
  font-weight: 700;
}

.stack-item-list {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.stack-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.65rem 0.85rem;
  background: var(--bg-secondary);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  transition: border-color var(--transition-fast);
}

.stack-item:hover {
  border-color: var(--border-medium);
}

.stack-item-name {
  font-weight: 600;
  font-size: 0.9375rem;
}

.stack-item-desc {
  font-size: 0.8125rem;
  color: var(--text-tertiary);
}

/* Philosophy Steps */
.philosophy-card {
  position: relative;
  padding: 2rem;
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
}

.step-number {
  font-size: 1.75rem;
  font-weight: 800;
  font-family: var(--font-mono);
  background: var(--gradient-accent);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  margin-bottom: 0.75rem;
  display: inline-block;
}

.step-title {
  font-size: 1.2rem;
  font-weight: 700;
  margin-bottom: 0.75rem;
}

.step-desc {
  font-size: 0.9375rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* Timeline */
.timeline {
  position: relative;
  max-width: 860px;
  margin: 0 auto;
  padding-left: 2rem;
}

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

.timeline-item {
  position: relative;
  margin-bottom: 2.5rem;
}

.timeline-item:last-child {
  margin-bottom: 0;
}

.timeline-node {
  position: absolute;
  left: -2rem;
  top: 0.25rem;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--bg-primary);
  border: 3px solid var(--accent-primary);
  box-shadow: 0 0 10px rgba(59, 130, 246, 0.4);
}

.timeline-content {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 1.75rem;
  backdrop-filter: blur(8px);
}

.timeline-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 0.75rem;
}

.timeline-role {
  font-size: 1.15rem;
  font-weight: 700;
}

.timeline-company {
  color: var(--accent-secondary);
  font-weight: 600;
  font-size: 0.9375rem;
}

.timeline-duration {
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--text-tertiary);
  padding: 0.2rem 0.6rem;
  background: var(--bg-secondary);
  border-radius: var(--radius-sm);
}

/* Currently Building Cards */
.building-card {
  border-left: 4px solid var(--accent-cyan);
}

.building-stage {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--accent-cyan);
  margin-bottom: 0.5rem;
}

/* Blog Cards */
.blog-card {
  display: flex;
  flex-direction: column;
  height: 100%;
}

.blog-meta {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 0.75rem;
  font-size: 0.8125rem;
  color: var(--text-tertiary);
}

.blog-category-tag {
  color: var(--accent-primary);
  font-weight: 600;
}

.blog-title {
  font-size: 1.2rem;
  font-weight: 700;
  margin-bottom: 0.75rem;
  line-height: 1.4;
}

.blog-summary {
  font-size: 0.9375rem;
  color: var(--text-secondary);
  margin-bottom: 1.25rem;
  flex: 1;
}

/* Modals */
.modal-dialog {
  border: none;
  background: transparent;
  padding: 0;
  max-width: 900px;
  width: 90%;
  margin: auto;
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-lg);
  overflow: hidden;
}

.modal-dialog::backdrop {
  background: rgba(0, 0, 0, 0.75);
  backdrop-filter: blur(8px);
}

.modal-box {
  background: var(--bg-secondary);
  border: 1px solid var(--border-medium);
  border-radius: var(--radius-xl);
  max-height: 88vh;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
}

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.5rem 2rem;
  border-bottom: 1px solid var(--border-subtle);
  position: sticky;
  top: 0;
  background: var(--bg-secondary);
  z-index: 10;
}

.modal-title {
  font-size: 1.35rem;
  font-weight: 700;
}

.modal-close-btn {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--bg-tertiary);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-secondary);
  transition: all var(--transition-fast);
}

.modal-close-btn:hover {
  color: var(--text-primary);
  background: var(--border-medium);
}

.modal-body {
  padding: 2rem;
}

/* Contact Form */
.contact-container {
  display: grid;
  grid-template-columns: 1fr 1.3fr;
  gap: 3rem;
}

.contact-info-list {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
  margin-top: 1.5rem;
}

.contact-method-card {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 1rem;
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  text-decoration: none;
  color: var(--text-primary);
  transition: border-color var(--transition-fast), transform var(--transition-fast);
}

.contact-method-card:hover {
  border-color: var(--accent-primary);
  transform: translateX(4px);
  color: var(--text-primary);
}

.contact-method-icon {
  width: 42px;
  height: 42px;
  border-radius: var(--radius-md);
  background: rgba(59, 130, 246, 0.1);
  color: var(--accent-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.contact-method-icon svg {
  width: 22px;
  height: 22px;
}

.form-group {
  margin-bottom: 1.25rem;
}

.form-label {
  display: block;
  font-size: 0.875rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
  color: var(--text-primary);
}

.form-input, .form-textarea {
  width: 100%;
  padding: 0.75rem 1rem;
  background: var(--bg-card);
  border: 1px solid var(--border-medium);
  border-radius: var(--radius-md);
  font-size: 0.9375rem;
  color: var(--text-primary);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.form-input:focus, .form-textarea:focus {
  border-color: var(--accent-primary);
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.2);
}

.form-textarea {
  resize: vertical;
  min-height: 120px;
}

.form-status {
  padding: 0.875rem;
  border-radius: var(--radius-md);
  margin-top: 1rem;
  font-size: 0.875rem;
  font-weight: 500;
  display: none;
}

.form-status.success {
  display: block;
  background: rgba(16, 185, 129, 0.15);
  color: var(--accent-secondary);
  border: 1px solid rgba(16, 185, 129, 0.3);
}

.form-status.error {
  display: block;
  background: rgba(239, 68, 68, 0.15);
  color: #ef4444;
  border: 1px solid rgba(239, 68, 68, 0.3);
}

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