/* =========================
DESIGN SYSTEM
========================= */
:root {
  /* COLORS */
  --color-bg: #0f172a;
  --color-bg-secondary: #111827;
  --color-surface: #1e293b;
  --color-surface-hover: #273449;
  --color-text: #f8fafc;
  --color-text-secondary: #cbd5e1;
  --color-primary: #38bdf8;
  --color-primary-dark: #0ea5e9;
  --color-border: #334155;

  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.15);
  --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.2);
}

/* LIGHT THEME */
[data-theme="light"] {
  --color-bg: #f8fafc;
  --color-bg-secondary: #ffffff;
  --color-surface: #ffffff;
  --color-surface-hover: #f1f5f9;
  --color-text: #0f172a;
  --color-text-secondary: #475569;
  --color-primary: #0ea5e9;
  --color-primary-dark: #0284c7;
  --color-border: #e2e8f0;

  --shadow-sm: 0 2px 6px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 6px 20px rgba(0, 0, 0, 0.08);
}

/* TYPOGRAPHY */
:root {
  --font-family-base: Arial, sans-serif;
  --font-size-xs: 0.75rem;
  --font-size-sm: 0.875rem;
  --font-size-md: 1rem;
  --font-size-lg: 1.25rem;
  --font-size-xl: 2rem;
  --font-size-2xl: 2.75rem;
  --font-weight-regular: 400;
  --font-weight-medium: 500;
  --font-weight-bold: 700;

  /* SPACING */
  --spacing-xs: 0.5rem;
  --spacing-sm: 0.75rem;
  --spacing-md: 1rem;
  --spacing-lg: 1.5rem;
  --spacing-xl: 2rem;
  --spacing-2xl: 3rem;
  --spacing-3xl: 4rem;

  /* RADIUS */
  --radius-sm: 0.5rem;
  --radius-md: 0.75rem;
  --radius-lg: 1rem;
  --radius-full: 999px;

  /* SHADOW */
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.15);
  --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.2);

  /* LAYOUT */
  --container-width: 1120px;

  /* TRANSITIONS */
  --transition-fast: 0.2s ease;
  --transition-normal: 0.3s ease;

  --container-width: 1120px;
}

/* =========================
RESET / BASE
========================= */

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  background-color: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-family-base);
  font-size: var(--font-size-md);
  font-weight: var(--font-weight-regular);
  line-height: 1.6;
  transition:
    background-color 0.3s ease,
    color 0.3s ease;
}

img {
  max-width: 100%;
  display: block;
}

a {
  text-decoration: none;
  color: inherit;
}

ul {
  list-style: none;
}

button,
input,
textarea {
  font: inherit;
  border: none;
  outline: none;
}

/* =========================
LAYOUT UTILS
========================= */
.container {
  width: min(100% - 2rem, var(--container-width));
  margin-inline: auto;
}

/* =========================
SECTION BASE
========================= */
.section {
  padding: var(--spacing-3xl) 0;
}

.section-header {
  margin-bottom: var(--spacing-xl);
}

.section-header h2 {
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-bold);
  margin-bottom: var(--spacing-sm);
}

.section-header p {
  color: var(--color-text-secondary);
  max-width: 600px;
  font-size: var(--font-size-md);
}

/* =========================
BUTTONS
========================= */
.btn,
.btn-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.85rem 1.4rem;
  border-radius: var(--radius-full);
  font-weight: var(--font-weight-medium);
  transition: var(--transition-fast);
  border: 1px solid transparent;
  cursor: pointer;
}

.btn {
  background-color: var(--color-primary);
  color: #0f172a;
}

.btn:hover {
  background-color: var(--color-primary-dark);
}

.btn-secondary {
  background-color: transparent;
  border: 1px solid var(--color-border);
  color: var(--color-text);
}

.btn-secondary:hover {
  background-color: var(--color-surface);
}

/* =========================
CARDS BASE
========================= */
.card {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg);
  box-shadow: var(--shadow-sm);
  transition:
    transform 0.2s ease,
    box-shadow 0.2s ease;
}

.card:hover {
  background-color: var(--color-surface-hover);
  transform: translateY(-6px);
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.1);
}

/* =========================
NAVBAR
========================= */
.header {
  background: linear-gradient(
    180deg,
    var(--color-bg-secondary) 0%,
    var(--color-bg) 100%
  );
}

.nav {
  width: min(100% - 2rem, var(--container-width));
  margin-inline: auto;
  min-height: 80px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--spacing-lg);
  position: sticky;
  top: 0;
  z-index: 1000;
}

.logo {
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-bold);
  color: var(--color-text);
  letter-spacing: 0.05em;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: var(--spacing-lg);
}

.nav-links a {
  color: var(--color-text-secondary);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  transition: var(--transition-fast);
  position: relative;
}

.nav-links a.active {
  color: var(--color-text);
}

.nav-links a.active::after {
  width: 100%;
}

.nav-links a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -6px;
  width: 0;
  height: 2px;
  background-color: var(--color-primary);
  transition: var(--transition-fast);
}

.nav-links a:hover::after {
  width: 100%;
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  white-space: nowrap;
}

.nav-actions button {
  background-color: var(--color-surface);
  color: var(--color-text);
  padding: 0.65rem 0.9rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-full);
  cursor: pointer;
  transition: var(--transition-fast);
}

.nav-actions button:hover {
  background-color: var(--color-surface-hover);
}

/* =========================
HERO
========================= */
.hero {
  padding: var(--spacing-3xl) 0;
}

.hero-content {
  width: min(100% - 2rem, var(--container-width));
  margin-inline: auto;
  display: grid;
  gap: var(--spacing-2xl);
}

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

.hero-text h2 {
  font-size: var(--font-size-2xl);
  font-weight: var(--font-weight-bold);
  line-height: 1.15;
  color: var(--color-text);
}

.hero-text h3 {
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-medium);
  color: var(--color-text);
}

.hero-text p {
  color: var(--color-text-secondary);
  max-width: 620px;
  font-size: var(--font-size-md);
}

.hero-buttons {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-sm);
  margin-top: var(--spacing-sm);
}

.hero-image {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.hero-image img {
  width: 220px;
  height: 220px;
  border-radius: 50%;
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-md);
  object-fit: cover;
}

/* =========================
ABOUT
========================= */
.about-content {
  display: grid;
  gap: var(--spacing-md);
  max-width: 760px;
}

.about-content p {
  color: var(--color-text-secondary);
}

/* =========================
SKILLS
========================= */
.skills-grid {
  display: grid;
  gap: var(--spacing-lg);
}

.skills-card h3 {
  margin-bottom: var(--spacing-md);
  font-size: var(--font-size-lg);
}

.skills-card ul {
  display: flex;
  gap: var(--spacing-xs);
  flex-wrap: wrap;
  color: var(--color-text-secondary);
}

/* =========================
TIMELINE / JOURNEY
========================= */
.timeline {
  display: grid;
  gap: var(--spacing-lg);
}

.timeline-item h3 {
  margin-bottom: var(--spacing-md);
  color: var(--color-primary);
}

.timeline-item p {
  color: var(--color-text-secondary);
}

/* =========================
PROJECTS
========================= */
.projects-grid {
  display: grid;
  gap: var(--spacing-lg);
}

.project-card h3 {
  margin-bottom: var(--spacing-md);
  color: var(--color-primary);
  font-size: var(--font-size-lg);
}

.project-card p {
  color: var(--color-text-secondary);
  margin-bottom: var(--spacing-md);
}

.project-links {
  display: flex;
  gap: var(--spacing-sm);
  flex-wrap: wrap;
}

.project-links a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background-color: var(--color-surface);
  padding: 0.65rem 0.9rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-full);
  font-size: var(--font-size-sm);
  transition: var(--transition-fast);
}

.project-links a:hover {
  background-color: var(--color-surface-hover);
}

/* =========================
CERTIFICATIONS
========================= */
.certifications-grid {
  display: grid;
  gap: var(--spacing-lg);
}

.certification-card h3 {
  margin-bottom: var(--spacing-xs);
}

.certification-card p {
  color: var(--color-text-secondary);
}

/* =========================
CONTACT
========================= */
.contact-content {
  display: grid;
  gap: var(--spacing-lg);
}

.contact-info {
  display: grid;
  gap: var(--spacing-sm);
}

.contact-info p {
  color: var(--color-text-secondary);
}

/* =========================
FOOTER
========================= */
.footer {
  padding: var(--spacing-lg) 0;
  text-align: center;
  color: var(--color-text-secondary);
  font-size: var(--font-size-sm);
}

/* ===============
HERO RESPONSIVE
================== */
@media (min-width: 768px) {
  .hero {
    padding: 5rem 0;
  }

  .hero-content {
    grid-template-columns: 1.2fr 0.8fr;
    align-items: center;
  }

  .hero-text h2 {
    font-size: 3.25rem;
  }
}

/* ===============
RESPONSIVE SECTIONS
================== */
@media (min-width: 768px) {
  .skills-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .projects-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .certifications-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

/* ===============
GLOBAL VISUAL REFINED
=============== */
main {
  display: flex;
  flex-direction: column;
  gap: 0;
}

.section + .section {
  border-top: 1px solid rgba(255, 255, 0.04);
}

/* ===============
ABOUT REFINED
=============== */
.about-content {
  grid-template-columns: 1fr;
}

.about-content p {
  font-size: var(--font-size-md);
  line-height: 1.8;
}

@media (min-width: 768px) {
  .about-content {
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-xl);
  }
}

/* ==============
SKILLS REFINED
============== */
.skills-card {
  min-height: 220px;
}

.skills-card h3 {
  color: var(--color-primary);
}

.skills-card ul li {
  position: relative;
  padding-left: 1.2rem;
}

.skills-card ul li::before {
  content: "•";
  position: absolute;
  left: 0;
  color: var(--color-primary);
}

/* ==============
PROJECT CARD REFINED
=============== */
.projects-grid {
  display: grid;
  gap: var(--spacing-lg);
}

.project-card {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  min-height: 240px;
}

.project-card h3 {
  color: var(--color-text);
}

.project-links {
  margin-top: auto;
  padding-top: var(--spacing-md);
}

.project-links a {
  color: var(--color-text);
  font-size: var(--font-size-sm);
}

/* ===============
SECTION HEADER REFINED
=============== */
.section-header h2 {
  position: relative;
  display: inline-flex;
  gap: var(--spacing-sm);
}

.section-header h2::after {
  content: "";
  display: block;
  flex-grow: 1;
  width: 48px;
  height: 3px;
  background-color: var(--color-primary);
  margin-left: var(--spacing-sm);
  margin-top: 0.4rem;
  border-radius: var(--radius-full);
}

/* ===============
EXPERIENCE REFINED
=============== */
.timeline {
  position: relative;
}

.timeline-item {
  position: relative;
  padding-left: var(--spacing-lg);
}

.timeline-item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.5rem;
  width: 12px;
  height: 12px;
  background-color: var(--color-primary);
  border-radius: var(--radius-full);
}

.timeline-item h3 {
  font-size: var(--font-size-lg);
}

/* ===============
CERTIFICATE REFINED
=============== */
.certificate-card {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
  min-height: 220px;
}

.certificate-card h3 {
  color: var(--color-primary);
  margin-bottom: var(--spacing-xs);
}

.certificate-stack {
  color: var(--color-text);
  font-size: var(--font-size-sm);
  line-height: 1.7;
}

.certificate-details {
  display: grid;
  gap: 0.35rem;
}

.certificate-details p {
  color: var(--color-text-secondary);
  font-size: var (--font-size-sm);
}

.certificate-year {
  margin-top: auto;
  align-self: flex-start;
  padding: 0.35rem 0.7rem;
  border-radius: var(--radius-full);
  background-color: rgba(56, 189, 248, 0.12);
  border: 1px solid rgba(56, 189, 248, 0.25);
  color: var(--color-primary);
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-medium);
}

.platform-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-full);
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-medium);
}

.platform-badge.hotmart {
  background-color: rgba(255, 106, 0, 0.12);
  border: 1px solid rgba(255, 106, 0, 0.25);
  color: #ff6a00;
}

/* ===============
CONTACT REFINED
=============== */
.contact-content {
  max-width: 700px;
}

.contact-info p {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--spacing-md);
  transition: var(--transition-fast);
}

.contact-info p:hover {
  background-color: var(--color-surface-hover);
}

/* ===============
SCROLL REVEAL
=============== */
.reveal {
  opacity: 0;
  transform: translateY(32px);
  transition:
    opacity 0.7s ease,
    transform 0.7s ease;
}

.reveal.show {
  opacity: 1;
  transform: translateY(0);
}

/* ===================
SKILL BOXES
================== */
.skills-items {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--spacing-sm);
  margin-top: var(--spacing-md);
}

.skill-box {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  min-height: 90px;
  background-color: var(--color-bg-secondary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 0.9rem;
  text-align: center;
  transition: var(--transition-fast);
}

.skill-box i {
  font-size: 2rem;
  color: var(--color-primary);
}

.skill-box span {
  color: var(--color-text);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
}

.skill-box:hover {
  background-color: var(--color-surface-hover);
  transform: translateY(-2px);
}

.skill-icon {
  font-size: 2rem;
  line-height: 1;
}

/* =================
PROJECT TAGS
================== */
.project-tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-xs);
  margin-bottom: var(--spacing-md);
}

.project-tag {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.4rem 0.75rem;
  border-radius: var(--radius-full);
  background-color: rgba(56, 189, 248, 0.12);
  border: 1px solid rgba(56, 189, 248, 0.25);
  color: var(--color-primary);
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-medium);
}

/* ===============
CONTACT CLICKCABLE
=============== */
.contact-info {
  display: grid;
  gap: var(--spacing-md);
}

.contact-item {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--spacing-md);
  padding: var(--spacing-md);
  transition: var(--transition-fast);
}

.contact-item:hover {
  background-color: var(--color-surface-hover);
  transform: translateY(-2px);
}

.contact-item strong {
  color: var(--color-text);
  font-size: var(--font-size-sm);
}

.contact-item span {
  color: var(--color-text-secondary);
  font-size: var(--font-size-sm);
  word-break: break-word;
}

/* ===============
IMAGE MODAL
=============== */
.hero-image img {
  cursor: pointer;
}

.image-modal {
  position: fixed;
  inset: 0;
  background-color: rgba(0, 0, 0, 0.82);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1.5rem;
  opacity: 0;
  visibility: hidden;
  transition:
    opacity 0.25s ease,
    visibility 0.25s ease;
  z-index: 2000;
}

.image-modal.show {
  opacity: 1;
  visibility: visible;
}

.image-modal-content {
  max-width: min(90vw, 420px);
  max-height: 85vh;
  border-radius: 1rem;
  object-fit: cover;
  box-shadow: 0 12px 32px rgba(0, 0, 0, 0.35);
  transform: scale(0.92);
  transition: transform 0.25s ease;
}

.image-modal.show .image-modal-content {
  transform: scale(1);
}

.image-modal-close {
  position: absolute;
  top: 1.25rem;
  right: 1.25rem;
  width: 42px;
  height: 42px;
  border-radius: 50%;
  background-color: rgba(255, 255, 255, 0.12);
  color: white;
  font-size: 1.5rem;
  cursor: pointer;
  display: grid;
  place-items: center;
  transition:
    background-color 0.2s ease,
    transform 0.2s ease;
}

.image-modal-close:hover {
  background-color: rgba(255, 255, 255, 0.2);
  transform: scale(1.05);
}

/* =========================
LANGUAGE SWITCH
========================= */
.lang-switch {
  position: relative;
  width: 78px;
  height: 38px;
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 10px;
  cursor: pointer;
  transition: var(--transition-fast);
  user-select: none;
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.04);
}

.lang-switch:hover {
  background-color: var(--color-surface-hover);
  transform: translateY(-1px);
}

.lang-label {
  position: relative;
  z-index: 2;
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-bold);
  color: var(--color-text-secondary);
  transition: var(--transition-fast);
  opacity: 0.7;
}

.lang-thumb {
  position: absolute;
  top: 3px;
  left: 4px;
  width: 30px;
  height: 30px;
  border-radius: 50%;
  background-color: var(--color-primary);
  transition: transform 0.25s cubic-bezier(0.4, 0, 0.2, 1);
  z-index: 1;
}

/* ACTIVE EN STATE  */
.lang-switch.is-en .lang-thumb {
  transform: translateX(38px);
}

.lang-switch.is-en .lang-label-right,
.lang-switch:not(.is-en) .lang-label-left {
  color: #0f172a;
}