:root {
  --bg: #0f0f0f;
  --bg-soft: #161616;
  --text: #eaeaea;
  --muted: #9ca3af;
  --accent: #4f46e5;
}

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

body {
  font-family: 'Inter', sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
}

a {
  color: var(--accent);
  text-decoration: none;
}

section {
  max-width: 1100px;
  margin: auto;
  padding: 80px 24px;
}

h1, h2, h3 {
  line-height: 1.2;
}

/* HERO */
.hero h1 {
  font-size: clamp(2.5rem, 5vw, 4rem);
  margin-bottom: 20px;
}

.hero p {
  max-width: 600px;
  color: var(--muted);
  font-size: 1.1rem;
  margin-bottom: 32px;
}

.cta {
  display: inline-block;
  padding: 14px 28px;
  background: var(--accent);
  color: white;
  border-radius: 8px;
  font-weight: 600;
}

.cta-secondary {
  display: inline-block;
  padding: 14px 28px;
  background: transparent;
  color: var(--text);
  border: 1px solid #333;
  border-radius: 8px;
  font-weight: 600;
  margin-left: 12px;
  margin-top: 12px;
  transition: border-color 0.2s, color 0.2s;
}

.cta-secondary:hover {
  border-color: var(--accent);
  color: var(--accent);
}

@media (max-width: 480px) {
  .cta-secondary {
    margin-left: 0;
    display: block;
    text-align: center;
  }
  
  .hero .cta {
    display: block;
    text-align: center;
  }
}

/* GRID */
.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 24px;
}

.card {
  background: var(--bg-soft);
  padding: 28px;
  border-radius: 12px;
}

.card h3 {
  margin-bottom: 12px;
}

.card p {
  color: var(--muted);
  font-size: 0.95rem;
}

/* STACK */
.stack span {
  display: inline-block;
  margin: 6px 10px 6px 0;
  padding: 6px 12px;
  background: #1f1f1f;
  border-radius: 999px;
  font-size: 0.85rem;
  color: var(--muted);
}

/* CONTACT FORM */
.contact-form {
  max-width: 500px;
}

.form-group {
  margin-bottom: 20px;
}

.form-group label {
  display: block;
  margin-bottom: 8px;
  font-size: 0.9rem;
  color: var(--muted);
}

.form-group label .optional {
  font-size: 0.8rem;
  color: #555;
}

.form-group label .char-counter {
  float: right;
  font-size: 0.8rem;
  color: #555;
  font-weight: 400;
}

.form-group label .char-counter .current {
  color: var(--muted);
}

.form-group label .char-counter.near-limit .current {
  color: #f59e0b;
}

.form-group label .char-counter.at-limit .current {
  color: #ef4444;
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: 14px 16px;
  background: var(--bg-soft);
  border: 1px solid #2a2a2a;
  border-radius: 8px;
  color: var(--text);
  font-family: inherit;
  font-size: 1rem;
  transition: border-color 0.2s;
}

.form-group input::placeholder,
.form-group textarea::placeholder {
  color: #555;
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--accent);
}

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

button.cta {
  border: none;
  cursor: pointer;
  transition: opacity 0.2s;
}

button.cta:hover {
  opacity: 0.9;
}

/* Form Validation States */
.error-message {
  display: none;
  font-size: 0.8rem;
  color: #ef4444;
  margin-top: 6px;
}

.form-group.error .error-message {
  display: block;
}

.form-group.error input,
.form-group.error textarea {
  border-color: #ef4444;
}

.form-group.valid input,
.form-group.valid textarea {
  border-color: #22c55e;
}

/* Form Messages */
.form-message {
  padding: 12px 16px;
  border-radius: 8px;
  margin-bottom: 20px;
  font-size: 0.9rem;
}

.form-message.success {
  background: rgba(34, 197, 94, 0.15);
  color: #22c55e;
  border: 1px solid #22c55e;
}

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

button.cta:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

/* PROJECTS PAGE */
.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 32px;
}

.project-card {
  background: var(--bg-soft);
  border-radius: 12px;
  overflow: hidden;
  transition: transform 0.2s;
  text-decoration: none;
  color: inherit;
  display: block;
}

.project-card:hover {
  transform: translateY(-4px);
}

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

.project-image {
  height: 180px;
  width: 100%;
}

.project-content {
  padding: 24px;
}

.project-content h3 {
  margin-bottom: 12px;
}

.project-content p {
  color: var(--muted);
  font-size: 0.95rem;
  margin-bottom: 16px;
}

.project-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.project-tags span {
  padding: 4px 10px;
  background: #1f1f1f;
  border-radius: 999px;
  font-size: 0.8rem;
  color: var(--muted);
}

/* FOOTER */
footer {
  border-top: 1px solid #222;
  padding: 40px 24px;
  text-align: center;
  color: var(--muted);
  font-size: 0.9rem;
}