/* Main Styles */

/* ==================== Base Layout ==================== */
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-lg);
}

.section {
  padding: var(--spacing-4xl) 0;
}

.section__title {
  font-size: var(--font-size-h2);
  color: var(--color-neutral-900);
  text-align: center;
  margin-bottom: var(--spacing-md);
}

.section__subtitle {
  font-size: var(--font-size-body-lg);
  color: var(--color-neutral-400);
  text-align: center;
  margin-bottom: var(--spacing-3xl);
  line-height: var(--line-height-relaxed);
}

/* ==================== Buttons ==================== */
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-md) var(--spacing-xl);
  font-size: var(--font-size-body);
  font-weight: var(--font-weight-semibold);
  border-radius: var(--radius-md);
  transition: all var(--transition-normal);
  cursor: pointer;
}

.button--primary {
  background: var(--gradient-primary);
  color: white;
  box-shadow: var(--shadow-md);
}

.button--primary:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-glow);
}

.button--primary:active {
  transform: translateY(0);
}

.button--outline {
  background: transparent;
  color: var(--color-primary);
  border: 2px solid var(--color-primary);
}

.button--outline:hover {
  background: var(--color-primary);
  color: white;
  transform: translateY(-2px);
}

.button--outline:active {
  transform: translateY(0);
}

/* ==================== Header / Navigation ==================== */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 64px;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--color-neutral-200);
  z-index: var(--z-fixed);
  transition: all var(--transition-normal);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

.nav__logo {
  font-family: var(--font-serif);
  font-size: 1.5rem;
  color: var(--color-primary);
  font-weight: var(--font-weight-regular);
  transition: all var(--transition-normal);
}

.nav__logo:hover {
  color: var(--color-primary-light);
  transform: translateY(-2px);
}

.nav__list {
  display: flex;
  gap: var(--spacing-xl);
}

.nav__link {
  position: relative;
  font-size: var(--font-size-body);
  font-weight: var(--font-weight-medium);
  color: var(--color-neutral-600);
  transition: all var(--transition-normal);
}

.nav__link::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 50%;
  width: 0;
  height: 2px;
  background: var(--color-primary);
  transition: all var(--transition-normal);
  transform: translateX(-50%);
}

.nav__link:hover {
  color: var(--color-primary);
}

.nav__link:hover::after {
  width: 100%;
}

.nav__social {
  display: flex;
  gap: var(--spacing-md);
}

.nav__social-link {
  color: var(--color-neutral-400);
  transition: all var(--transition-normal);
}

.nav__social-link:hover {
  color: var(--color-primary);
  transform: scale(1.1) rotate(5deg);
}

.nav__toggle,
.nav__close {
  display: none;
  font-size: 1.5rem;
  color: var(--color-neutral-800);
  cursor: pointer;
}

/* ==================== Hero Section ==================== */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding-top: 64px;
  background: var(--gradient-subtle);
  position: relative;
  overflow: hidden;
}

.hero__container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-3xl);
  align-items: center;
  width: 100%;
}

.hero__content {
  position: relative;
  z-index: 2;
}

.hero__label {
  display: inline-block;
  padding: var(--spacing-xs) var(--spacing-md);
  background: rgba(37, 99, 235, 0.1);
  color: var(--color-primary);
  font-size: var(--font-size-body-sm);
  font-weight: var(--font-weight-semibold);
  border-radius: var(--radius-full);
  margin-bottom: var(--spacing-lg);
}

.hero__title {
  font-size: var(--font-size-h1);
  color: var(--color-neutral-900);
  margin-bottom: var(--spacing-lg);
  animation: fadeInUp 0.8s ease-out forwards;
}

.hero__subtitle {
  font-family: var(--font-sans);
  font-size: var(--font-size-body-lg);
  color: var(--color-primary);
  font-weight: var(--font-weight-medium);
  margin-bottom: var(--spacing-xl);
  line-height: var(--line-height-relaxed);
  animation: fadeInUp 0.8s ease-out 0.2s forwards;
  opacity: 0;
}

.hero__description {
  font-size: var(--font-size-body);
  color: var(--color-neutral-600);
  margin-bottom: var(--spacing-2xl);
  line-height: var(--line-height-relaxed);
  animation: fadeInUp 0.8s ease-out 0.4s forwards;
  opacity: 0;
}

.hero__buttons {
  display: flex;
  gap: var(--spacing-md);
  animation: fadeInUp 0.8s ease-out 0.6s forwards;
  opacity: 0;
}

.hero__decoration {
  position: relative;
  height: 500px;
}

.hero__shape {
  position: absolute;
  border-radius: 50%;
  animation: float 6s ease-in-out infinite;
}

.hero__shape--1 {
  width: 200px;
  height: 200px;
  background: var(--gradient-ai);
  top: 50px;
  right: 100px;
  opacity: 0.8;
  animation-delay: 0s;
}

.hero__shape--2 {
  width: 150px;
  height: 150px;
  background: var(--gradient-warm);
  top: 200px;
  right: 250px;
  opacity: 0.6;
  animation-delay: 2s;
}

.hero__shape--3 {
  width: 100px;
  height: 100px;
  background: var(--gradient-primary);
  top: 300px;
  right: 50px;
  opacity: 0.7;
  animation-delay: 4s;
}

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

@keyframes float {
  0%, 100% {
    transform: translateY(0) rotate(0deg);
  }
  50% {
    transform: translateY(-20px) rotate(10deg);
  }
}

/* ==================== Work Section ==================== */
.work__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-xl);
}

.work__card {
  background: white;
  border: 1px solid var(--color-neutral-200);
  border-radius: var(--radius-lg);
  padding: var(--spacing-xl);
  transition: all var(--transition-normal);
  animation: fadeIn 0.6s ease-out forwards;
  opacity: 0;
}

.work__card:nth-child(1) { animation-delay: 0.1s; }
.work__card:nth-child(2) { animation-delay: 0.2s; }
.work__card:nth-child(3) { animation-delay: 0.3s; }

.work__card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-xl);
  border-color: var(--color-primary-light);
}

.work__icon {
  width: 80px;
  height: 80px;
  background: var(--gradient-primary);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--spacing-lg);
  color: white;
  font-size: 2rem;
}

.work__title {
  font-size: var(--font-size-h3);
  color: var(--color-neutral-900);
  margin-bottom: var(--spacing-md);
}

.work__description {
  font-size: var(--font-size-body);
  color: var(--color-neutral-600);
  margin-bottom: var(--spacing-lg);
  line-height: var(--line-height-relaxed);
}

.work__tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-xs);
}

.work__tag {
  padding: 4px 12px;
  background: rgba(37, 99, 235, 0.1);
  color: var(--color-primary);
  font-size: var(--font-size-caption);
  font-weight: var(--font-weight-semibold);
  border-radius: var(--radius-full);
}

@keyframes fadeIn {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

/* ==================== Notes Section ==================== */
.notes__filters {
  display: flex;
  justify-content: center;
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-2xl);
  flex-wrap: wrap;
}

.notes__filter {
  padding: var(--spacing-sm) var(--spacing-lg);
  background: white;
  border: 1px solid var(--color-neutral-200);
  color: var(--color-neutral-600);
  font-size: var(--font-size-body-sm);
  font-weight: var(--font-weight-medium);
  border-radius: var(--radius-full);
  cursor: pointer;
  transition: all var(--transition-normal);
}

.notes__filter:hover,
.notes__filter.active {
  background: var(--color-primary);
  color: white;
  border-color: var(--color-primary);
}

.notes__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-lg);
  margin-bottom: var(--spacing-2xl);
}

.note__card {
  background: white;
  border: 1px solid var(--color-neutral-200);
  border-radius: var(--radius-md);
  padding: var(--spacing-lg);
  transition: all var(--transition-normal);
  cursor: pointer;
}

.note__card:hover {
  box-shadow: var(--shadow-lg);
  border-color: var(--color-primary-light);
}

.note__header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--spacing-md);
}

.note__category {
  padding: 4px 12px;
  background: rgba(16, 185, 129, 0.1);
  color: var(--color-accent-green);
  font-size: var(--font-size-caption);
  font-weight: var(--font-weight-semibold);
  border-radius: var(--radius-full);
}

.note__date {
  font-size: var(--font-size-body-sm);
  color: var(--color-neutral-400);
}

.note__title {
  font-size: var(--font-size-h4);
  color: var(--color-neutral-900);
  margin-bottom: var(--spacing-md);
}

.note__summary {
  font-size: var(--font-size-body);
  color: var(--color-neutral-600);
  line-height: var(--line-height-relaxed);
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
  margin-bottom: var(--spacing-md);
}

.note__read-more {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-xs);
  color: var(--color-primary);
  font-size: var(--font-size-body-sm);
  font-weight: var(--font-weight-semibold);
  transition: all var(--transition-normal);
}

.note__read-more:hover {
  gap: var(--spacing-sm);
}

.notes__load-more {
  display: block;
  margin: 0 auto;
}

/* ==================== Projects Section ==================== */
.projects__container {
  display: flex;
  gap: var(--spacing-lg);
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  -webkit-overflow-scrolling: touch;
  padding-bottom: var(--spacing-md);
}

.project__card {
  flex-shrink: 0;
  width: 400px;
  background: white;
  border: 1px solid var(--color-neutral-200);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: all var(--transition-normal);
  scroll-snap-align: start;
}

.project__card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-xl);
}

.project__image {
  width: 100%;
  height: 225px;
  background: var(--gradient-ai);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 3rem;
}

.project__content {
  padding: var(--spacing-lg);
}

.project__title {
  font-size: var(--font-size-h4);
  color: var(--color-neutral-900);
  margin-bottom: var(--spacing-md);
}

.project__description {
  font-size: var(--font-size-body);
  color: var(--color-neutral-600);
  line-height: var(--line-height-relaxed);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  margin-bottom: var(--spacing-md);
}

.project__tech {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-xs);
  margin-bottom: var(--spacing-lg);
}

.project__tech-tag {
  padding: 4px 8px;
  background: var(--color-neutral-100);
  color: var(--color-neutral-600);
  font-family: var(--font-mono);
  font-size: var(--font-size-caption);
  border-radius: var(--radius-sm);
}

.project__links {
  display: flex;
  gap: var(--spacing-md);
}

/* ==================== Tools Section ==================== */
.tools__grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--spacing-lg);
}

.tool__card {
  background: white;
  border: 1px solid var(--color-neutral-200);
  border-radius: var(--radius-md);
  padding: var(--spacing-lg);
  transition: all var(--transition-normal);
}

.tool__card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-md);
  border-color: var(--color-accent-warm);
}

.tool__icon {
  width: 40px;
  height: 40px;
  background: var(--gradient-ai);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-weight: var(--font-weight-bold);
  font-size: var(--font-size-body-lg);
  margin-bottom: var(--spacing-md);
}

.tool__name {
  font-size: var(--font-size-h4);
  color: var(--color-neutral-900);
  margin-bottom: var(--spacing-xs);
  font-family: var(--font-sans);
  font-weight: var(--font-weight-bold);
}

.tool__usage {
  font-size: var(--font-size-body-sm);
  color: var(--color-neutral-400);
  margin-bottom: var(--spacing-md);
}

.tool__badge {
  display: inline-block;
  padding: 2px 8px;
  font-size: var(--font-size-overline);
  font-weight: var(--font-weight-semibold);
  border-radius: var(--radius-full);
  margin-bottom: var(--spacing-md);
}

.tool__badge--free {
  background: rgba(16, 185, 129, 0.1);
  color: var(--color-accent-green);
}

.tool__badge--paid {
  background: rgba(245, 158, 11, 0.1);
  color: var(--color-accent-warm);
}

.tool__badge--freemium {
  background: rgba(37, 99, 235, 0.1);
  color: var(--color-primary);
}

.tool__description {
  font-size: var(--font-size-body-sm);
  color: var(--color-neutral-600);
  line-height: var(--line-height-relaxed);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  margin-bottom: var(--spacing-md);
}

.tool__link {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-xs);
  color: var(--color-primary);
  font-size: var(--font-size-body-sm);
  font-weight: var(--font-weight-semibold);
  transition: all var(--transition-normal);
}

.tool__link:hover {
  gap: var(--spacing-sm);
}

/* ==================== Contact Section ==================== */
.contact {
  background: var(--gradient-subtle);
  position: relative;
}

.contact__content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-3xl);
  align-items: center;
}

.contact__info {
  text-align: left;
}

.contact__info .section__title {
  text-align: left;
  margin-bottom: var(--spacing-lg);
}

.contact__subtitle {
  font-size: var(--font-size-body-lg);
  color: var(--color-neutral-600);
  margin-bottom: var(--spacing-lg);
  line-height: var(--line-height-relaxed);
}

.contact__description {
  font-size: var(--font-size-body);
  color: var(--color-neutral-400);
}

.contact__cards {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
}

.contact__card {
  background: white;
  border: 1px solid var(--color-neutral-200);
  border-radius: var(--radius-md);
  padding: var(--spacing-lg);
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  transition: all var(--transition-normal);
}

.contact__card:hover {
  box-shadow: var(--shadow-md);
  border-color: var(--color-primary);
}

.contact__card-icon {
  width: 48px;
  height: 48px;
  background: rgba(37, 99, 235, 0.1);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-primary);
  font-size: 1.5rem;
  flex-shrink: 0;
}

.contact__card-content {
  flex: 1;
}

.contact__card-label {
  font-size: var(--font-size-body-sm);
  color: var(--color-neutral-400);
  margin-bottom: 4px;
}

.contact__card-value {
  font-size: var(--font-size-body);
  color: var(--color-neutral-800);
  font-weight: var(--font-weight-medium);
}

.contact__card-link {
  font-size: var(--font-size-body-sm);
  color: var(--color-primary);
  font-weight: var(--font-weight-semibold);
}

/* ==================== Footer ==================== */
.footer {
  background: var(--color-neutral-900);
  color: var(--color-neutral-400);
  padding: var(--spacing-xl) 0;
  text-align: center;
}

.footer__text {
  font-size: var(--font-size-body-sm);
}

/* ==================== Back to Top ==================== */
.back-to-top {
  position: fixed;
  bottom: var(--spacing-xl);
  right: var(--spacing-xl);
  width: 48px;
  height: 48px;
  background: var(--color-primary);
  color: white;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-lg);
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-normal);
  z-index: var(--z-fixed);
}

.back-to-top.visible {
  opacity: 1;
  visibility: visible;
}

.back-to-top:hover {
  background: var(--color-primary-light);
  transform: translateY(-4px);
  box-shadow: var(--shadow-xl);
}

/* ==================== Modal ==================== */
.modal {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  display: none;
  z-index: var(--z-modal);
}

.modal.active {
  display: flex;
  align-items: center;
  justify-content: center;
}

.modal__overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.5);
  backdrop-filter: blur(4px);
}

.modal__content {
  position: relative;
  background: white;
  border-radius: var(--radius-lg);
  padding: var(--spacing-2xl);
  max-width: 800px;
  width: 90%;
  max-height: 90vh;
  overflow-y: auto;
  z-index: 1;
  animation: modalFadeIn 0.3s ease-out;
}

@keyframes modalFadeIn {
  from {
    opacity: 0;
    transform: scale(0.9);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

.modal__close {
  position: absolute;
  top: var(--spacing-lg);
  right: var(--spacing-lg);
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-neutral-400);
  cursor: pointer;
  transition: all var(--transition-normal);
}

.modal__close:hover {
  color: var(--color-neutral-800);
  transform: rotate(90deg);
}

.modal__body {
  margin-top: var(--spacing-lg);
}

.modal__note-category {
  display: inline-block;
  padding: 4px 12px;
  background: rgba(16, 185, 129, 0.1);
  color: var(--color-accent-green);
  font-size: var(--font-size-caption);
  font-weight: var(--font-weight-semibold);
  border-radius: var(--radius-full);
  margin-bottom: var(--spacing-md);
}

.modal__note-date {
  font-size: var(--font-size-body-sm);
  color: var(--color-neutral-400);
  margin-bottom: var(--spacing-lg);
}

.modal__note-title {
  font-size: var(--font-size-h3);
  color: var(--color-neutral-900);
  margin-bottom: var(--spacing-xl);
}

.modal__note-content {
  font-size: var(--font-size-body);
  color: var(--color-neutral-800);
  line-height: var(--line-height-relaxed);
}