/* ===========================
   Dark Theme Color Palette
   =========================== */
:root {
  --dark-background: #1C1C1E;
  --dark-card-background: #2C2C2E;
  --dark-primary-text: #FFFFFF;
  --dark-secondary-text: #A0A0A0;
  --dark-tertiary-text: #707070;
}

/* ===========================
   Reset & Global Styles
   =========================== */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  background-color: var(--dark-background);
  color: var(--dark-primary-text);
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen',
    'Ubuntu', 'Cantarell', 'Fira Sans', 'Droid Sans', 'Helvetica Neue',
    sans-serif;
  font-size: 16px;
  line-height: 1.6;
  font-weight: 400;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* ===========================
   Typography
   =========================== */
h1, h2, h3, h4, h5, h6 {
  font-weight: 600;
  line-height: 1.2;
  margin-bottom: 1rem;
  color: var(--dark-primary-text);
}

h1 {
  font-size: 2.5rem;
  margin-bottom: 1.5rem;
}

h2 {
  font-size: 2rem;
  margin-bottom: 1.25rem;
}

h3 {
  font-size: 1.5rem;
  margin-bottom: 1rem;
}

h4 {
  font-size: 1.25rem;
  margin-bottom: 0.875rem;
}

h5 {
  font-size: 1.125rem;
  margin-bottom: 0.75rem;
}

h6 {
  font-size: 1rem;
  margin-bottom: 0.75rem;
}

p {
  color: var(--dark-secondary-text);
  margin-bottom: 1rem;
}

a {
  color: var(--dark-primary-text);
  text-decoration: none;
  transition: color 0.3s ease;
}

a:hover {
  color: var(--dark-secondary-text);
}

/* ===========================
   Container & Layout
   =========================== */
main {
  max-width: 1200px;
  margin: 0 auto;
  padding: 2rem 1rem;
}

section {
  margin-bottom: 2rem;
}

/* ===========================
   Cards & Components
   =========================== */
.card {
  background-color: var(--dark-card-background);
  border-radius: 8px;
  padding: 1.5rem;
  margin-bottom: 1rem;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.card:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
}

/* ===========================
   Buttons
   =========================== */
button, .btn {
  background-color: var(--dark-card-background);
  color: var(--dark-primary-text);
  border: 1px solid var(--dark-secondary-text);
  padding: 0.75rem 1.5rem;
  border-radius: 6px;
  cursor: pointer;
  font-size: 1rem;
  transition: all 0.2s ease;
}

button:hover, .btn:hover {
  background-color: var(--dark-secondary-text);
  color: var(--dark-background);
}

button:active, .btn:active {
  transform: scale(0.98);
}

/* ===========================
   Inputs & Forms
   =========================== */
input, textarea, select {
  background-color: var(--dark-card-background);
  color: var(--dark-primary-text);
  border: 1px solid var(--dark-tertiary-text);
  padding: 0.75rem;
  border-radius: 6px;
  font-family: inherit;
  font-size: 1rem;
  transition: border-color 0.2s ease;
}

input::placeholder, textarea::placeholder {
  color: var(--dark-tertiary-text);
}

input:focus, textarea:focus, select:focus {
  outline: none;
  border-color: var(--dark-secondary-text);
  box-shadow: 0 0 0 3px rgba(160, 160, 160, 0.1);
}

/* ===========================
   Utilities
   =========================== */
.text-primary {
  color: var(--dark-primary-text);
}

.text-secondary {
  color: var(--dark-secondary-text);
}

.text-tertiary {
  color: var(--dark-tertiary-text);
}

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

.bg-card {
  background-color: var(--dark-card-background);
}

.text-center {
  text-align: center;
}

.text-right {
  text-align: right;
}

.text-left {
  text-align: left;
}

.mt-1 { margin-top: 0.5rem; }
.mt-2 { margin-top: 1rem; }
.mt-3 { margin-top: 1.5rem; }
.mt-4 { margin-top: 2rem; }

.mb-1 { margin-bottom: 0.5rem; }
.mb-2 { margin-bottom: 1rem; }
.mb-3 { margin-bottom: 1.5rem; }
.mb-4 { margin-bottom: 2rem; }

.p-1 { padding: 0.5rem; }
.p-2 { padding: 1rem; }
.p-3 { padding: 1.5rem; }
.p-4 { padding: 2rem; }

/* ===========================
   Responsive Design
   =========================== */
@media (max-width: 768px) {
  h1 {
    font-size: 2rem;
  }

  h2 {
    font-size: 1.5rem;
  }

  main {
    padding: 1rem;
  }

  .card {
    padding: 1rem;
  }
}

@media (max-width: 480px) {
  h1 {
    font-size: 1.75rem;
  }

  h2 {
    font-size: 1.25rem;
  }

  body {
    font-size: 14px;
  }

  main {
    padding: 0.75rem;
  }
}