/* ===== CSS CUSTOM PROPERTIES (DESIGN SYSTEM) ===== */
:root {
  /* Base Colors (Notion-inspired) */
  --sketch-blue: #0066CC;
  --sketch-orange: #FF6B35;
  --sketch-green: #00B894;
  --sketch-purple: #6C5CE7;
  --sketch-gray: #37352F;
  
  /* Typography */
  --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  
  /* Transitions */
  --transition-base: 0.3s ease;
}

/* ===== BASE STYLES ===== */
html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-family);
  line-height: 1.6;
  color: var(--sketch-gray);
}

/* ===== SKETCH STYLE COMPONENTS ===== */
.sketch-title {
  position: relative;
  display: inline-block;
}

.sketch-underline {
  position: absolute;
  bottom: -10px;
  left: 0;
  width: 100%;
  height: 10px;
  color: var(--sketch-blue);
  opacity: 0.7;
}

.sketch-heading {
  position: relative;
}

.sketch-heading::after {
  content: '';
  position: absolute;
  bottom: -8px;
  left: 50%;
  transform: translateX(-50%) rotate(-1deg);
  width: 60px;
  height: 3px;
  background: linear-gradient(90deg, var(--sketch-orange) 0%, transparent 100%);
  border-radius: 2px;
}

.sketch-button {
  background: white !important;
  border: 2px solid var(--sketch-gray) !important;
  color: var(--sketch-gray) !important;
  font-weight: 500;
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
}

.sketch-button:hover {
  transform: translateY(-2px) rotate(1deg) !important;
  box-shadow: 0 10px 25px rgba(0,0,0,0.15) !important;
  background: #f8f9fa !important;
  border-color: var(--sketch-blue) !important;
  color: var(--sketch-blue) !important;
}

.sketch-button svg {
  width: 16px;
  height: 16px;
  transition: transform var(--transition-base);
}

.sketch-button:hover svg {
  transform: translateX(4px);
}

.sketch-logo {
  font-weight: 700;
  position: relative;
  color: var(--sketch-gray) !important;
  text-decoration: none !important;
}

.sketch-logo::after {
  content: '';
  position: absolute;
  bottom: 2px;
  left: 0;
  width: 100%;
  height: 2px;
  background: var(--sketch-blue);
  transform: rotate(-1deg);
  opacity: 0.6;
}

/* ===== HEADER & NAVIGATION ===== */
.header {
  background: rgba(255, 255, 255, 0.95) !important;
  backdrop-filter: blur(10px);
  border-bottom: 1px solid #dee2e6;
  transition: all var(--transition-base);
}

.nav-link {
  position: relative;
  font-weight: 500;
  color: var(--sketch-gray) !important;
  transition: color var(--transition-base);
}

.nav-link:hover {
  color: var(--sketch-blue) !important;
}

.nav-link.active::after {
  content: '';
  position: absolute;
  bottom: -8px;
  left: 50%;
  transform: translateX(-50%) rotate(-2deg);
  width: 20px;
  height: 3px;
  background: var(--sketch-orange);
  border-radius: 2px;
}

/* ===== HERO SECTION ===== */
.hero {
  background: linear-gradient(135deg, #ffffff 0%, #f8f9fa 100%);
  position: relative;
  overflow: hidden;
  padding-top: 100px;
}

.hero-title {
  color: var(--sketch-gray);
  line-height: 1.2;
}

.hero-subtitle {
  color: #6c757d;
  line-height: 1.5;
}

.hero-doodles {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 1;
}

.doodle {
  position: absolute;
  color: var(--sketch-purple);
  opacity: 0.3;
  animation: float 6s ease-in-out infinite;
}

.doodle-1 {
  width: 50px;
  height: 50px;
  top: 20%;
  right: 20%;
  animation-delay: 0s;
}

.doodle-2 {
  width: 60px;
  height: 40px;
  bottom: 30%;
  right: 10%;
  animation-delay: 2s;
}

@keyframes float {
  0%, 100% { transform: translateY(0px) rotate(0deg); }
  50% { transform: translateY(-20px) rotate(5deg); }
}

/* ===== SERVICE CARDS ===== */
.service-card {
  border: 2px solid #dee2e6 !important;
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
}

.service-card:hover {
  transform: translateY(-8px) rotate(1deg);
  box-shadow: 0 10px 25px rgba(0,0,0,0.15) !important;
  border-color: var(--sketch-blue) !important;
}

.service-icon {
  width: 60px;
  height: 60px;
  color: var(--sketch-blue);
}

.service-title {
  color: var(--sketch-gray);
  font-weight: 600;
}

.service-description {
  color: #6c757d;
}

.service-benefits {
  list-style: none;
  padding-left: 0;
}

.service-benefits li {
  position: relative;
  padding-left: 1.5rem;
  margin-bottom: 0.5rem;
  color: #6c757d;
}

.service-benefits li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 12px;
  width: 6px;
  height: 6px;
  background: var(--sketch-orange);
  border-radius: 50%;
  transform: rotate(45deg);
}

.tech-tag {
  background: #f8f9fa;
  border: 1px solid #dee2e6;
  color: #6c757d;
  font-size: 0.875rem;
  transform: rotate(-1deg);
}

/* ===== PORTFOLIO SECTION ===== */
.filter-btn {
  background: white !important;
  border: 2px solid #dee2e6 !important;
  color: #6c757d !important;
  font-weight: 500;
  transition: all var(--transition-base);
  position: relative;
}

.filter-btn:hover,
.filter-btn.active {
  background: var(--sketch-gray) !important;
  color: white !important;
  border-color: var(--sketch-gray) !important;
  transform: translateY(-2px);
}

.filter-btn.active::after {
  content: '';
  position: absolute;
  bottom: -8px;
  left: 50%;
  transform: translateX(-50%) rotate(-2deg);
  width: 20px;
  height: 3px;
  background: var(--sketch-orange);
  border-radius: 2px;
}

.portfolio-item {
  border: 2px solid #dee2e6 !important;
  transition: all var(--transition-base);
  overflow: hidden;
}

.portfolio-item:hover {
  transform: translateY(-8px) rotate(-1deg);
  box-shadow: 0 10px 25px rgba(0,0,0,0.15) !important;
  border-color: var(--sketch-blue) !important;
}

.portfolio-image {
  width: 100%;
  height: 200px;
  object-fit: cover;
  background: #f8f9fa;
}

.portfolio-title {
  color: var(--sketch-gray);
  font-weight: 600;
}

.portfolio-description {
  color: #6c757d;
}

/* ===== CONTACT SECTION ===== */
.sketch-label {
  font-weight: 500;
  color: var(--sketch-gray);
}

.sketch-input {
  border: 2px solid #dee2e6 !important;
  transition: all var(--transition-base);
}

.sketch-input:focus {
  border-color: var(--sketch-blue) !important;
  box-shadow: 0 0 0 0.2rem rgba(0, 102, 204, 0.25) !important;
  transform: translateY(-1px);
}

.sketch-input.is-invalid {
  border-color: #dc3545 !important;
}

.sketch-error {
  color: #dc3545;
  font-size: 0.875rem;
  margin-top: 0.5rem;
  display: none;
  position: relative;
  padding-left: 1rem;
}

.sketch-error.show {
  display: block;
}

.sketch-error::before {
  content: '→';
  position: absolute;
  left: 0;
  top: 0;
  color: #dc3545;
  transform: rotate(-45deg);
}

.sketch-submit {
  background: var(--sketch-gray) !important;
  border: 2px solid var(--sketch-gray) !important;
  color: white !important;
  font-weight: 600;
  transition: all var(--transition-base);
}

.sketch-submit:hover {
  background: white !important;
  color: var(--sketch-gray) !important;
  border-color: var(--sketch-blue) !important;
  transform: translateY(-2px);
  box-shadow: 0 10px 25px rgba(0,0,0,0.15) !important;
}

.sketch-submit svg {
  width: 16px;
  height: 16px;
  transition: transform var(--transition-base);
}

.sketch-submit:hover svg {
  transform: translateX(4px);
}

.success-icon {
  width: 50px;
  height: 50px;
  color: #198754;
}

.contact-icon {
  width: 24px;
  height: 24px;
  color: var(--sketch-blue);
}

/* ===== FOOTER ===== */
.footer-logo::after {
  background: var(--sketch-blue);
}

.footer-tagline {
  color: #adb5bd;
}

.footer-link {
  color: #adb5bd !important;
  transition: color var(--transition-base);
  text-decoration: none;
}

.footer-link:hover {
  color: white !important;
}

.social-link {
  color: #adb5bd !important;
  transition: all var(--transition-base);
  text-decoration: none;
}

.social-link:hover {
  color: white !important;
  transform: translateY(-2px);
}

.footer-divider {
  color: #6c757d;
}

.footer-copyright {
  color: #adb5bd;
}

/* ===== BACK TO TOP BUTTON ===== */
.back-to-top:hover {
  background: white !important;
  color: var(--sketch-gray) !important;
  border-color: var(--sketch-blue) !important;
  transform: translateY(-4px) rotate(5deg);
}

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

.fade-in-up {
  animation: fadeInUp 0.6s ease-out;
}