/* ============================================================
   PAYKASIR NEO-BRUTALISM DESIGN SYSTEM
   Professional Payment Gateway Portal Layout with Sticky Sidebar & Topbar
   ============================================================ */

:root {
  --bg-canvas: #FFFDF5;
  --bg-sidebar: #FFFDF5;
  --text-main: #121212;
  --text-muted: #4B5563;
  --border-color: #121212;
  --border-width: 3px;
  --shadow-offset: 4px 4px 0px #121212;
  --shadow-offset-lg: 6px 6px 0px #121212;
  --shadow-offset-sm: 2px 2px 0px #121212;
  
  --accent-yellow: #FFE500;
  --accent-green: #4EFA94;
  --accent-cyan: #38BDF8;
  --accent-coral: #FF6B4A;
  --accent-surface: #FFFFFF;
  --accent-dark: #0F172A;
  
  --font-sans: 'Plus Jakarta Sans', system-ui, -apple-system, sans-serif;
  --font-mono: 'JetBrains Mono', monospace;
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font-sans);
  background-color: var(--bg-canvas);
  color: var(--text-main);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

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

/* Typography */
h1, h2, h3, h4, h5, h6 {
  font-weight: 800;
  line-height: 1.25;
  color: var(--text-main);
  letter-spacing: -0.02em;
}

h1 { font-size: clamp(1.8rem, 4vw, 2.5rem); }
h2 { font-size: clamp(1.4rem, 3vw, 1.85rem); }
h3 { font-size: 1.2rem; }
h4 { font-size: 1.05rem; }

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

.font-mono { font-family: var(--font-mono); }
.text-main { color: var(--text-main); }

/* SVG Icons */
.doc-icon {
  display: inline-block;
  width: 1.15em;
  height: 1.15em;
  vertical-align: -0.2em;
  margin-right: 0.35em;
  fill: none;
  stroke: currentColor;
  stroke-width: 2.2;
  stroke-linecap: round;
  stroke-linejoin: round;
  flex-shrink: 0;
}

/* TOPBAR */
.topbar {
  position: sticky;
  top: 0;
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.85rem 1.5rem;
  background-color: var(--bg-canvas);
  border-bottom: var(--border-width) solid var(--border-color);
  box-shadow: 0 4px 0px rgba(0,0,0,0.05);
}

.topbar-brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.topbar-logo {
  width: 40px;
  height: 40px;
  background-color: var(--accent-yellow);
  border: var(--border-width) solid var(--border-color);
  box-shadow: var(--shadow-offset-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 900;
  font-size: 1.2rem;
  border-radius: 6px;
}

.topbar-title {
  font-size: 1.25rem;
  font-weight: 900;
  letter-spacing: -0.03em;
}

.topbar-actions {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.menu-toggle-btn {
  display: none;
  background-color: var(--accent-yellow);
  border: var(--border-width) solid var(--border-color);
  box-shadow: var(--shadow-offset-sm);
  padding: 0.4rem 0.65rem;
  cursor: pointer;
  border-radius: 6px;
  font-weight: 900;
  font-size: 1.2rem;
}

/* LAYOUT: SIDEBAR + CONTENT */
.layout {
  display: flex;
  max-width: 1440px;
  margin: 0 auto;
  position: relative;
}

/* SIDEBAR */
.sidebar {
  width: 290px;
  flex-shrink: 0;
  position: sticky;
  top: 65px;
  height: calc(100vh - 65px);
  overflow-y: auto;
  background-color: var(--bg-sidebar);
  border-right: var(--border-width) solid var(--border-color);
  padding: 1.5rem 1.25rem 3rem;
  z-index: 900;
  transition: transform 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

.sidebar-title {
  font-size: 0.85rem;
  font-weight: 900;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 0.85rem;
  padding: 0 0.5rem;
}

.sidebar nav {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.sidebar nav a {
  display: flex;
  align-items: center;
  padding: 0.6rem 0.85rem;
  border: 2px solid transparent;
  border-radius: 6px;
  color: var(--text-main);
  font-size: 0.9rem;
  font-weight: 700;
  transition: all 0.12s ease;
}

.sidebar nav a:hover {
  background-color: #FFFFFF;
  border-color: var(--border-color);
  box-shadow: var(--shadow-offset-sm);
  transform: translate(-1px, -1px);
}

.sidebar nav a.active {
  background-color: var(--accent-yellow);
  border-color: var(--border-color);
  box-shadow: var(--shadow-offset-sm);
}

.sidebar .close-btn {
  display: none;
  text-align: right;
  margin-bottom: 1rem;
  font-size: 1.5rem;
  font-weight: 900;
  cursor: pointer;
}

.overlay {
  position: fixed;
  inset: 0;
  background-color: rgba(0, 0, 0, 0.5);
  backdrop-filter: blur(2px);
  z-index: 850;
  display: none;
}

.overlay.active {
  display: block;
}

/* CONTENT AREA */
.content {
  flex: 1;
  min-width: 0;
  padding: 2.5rem 3rem 6rem;
  max-width: 1050px;
}

/* SECTION */
.section {
  margin-bottom: 4rem;
  scroll-margin-top: 85px;
}

.section h2 {
  font-size: 1.7rem;
  display: flex;
  align-items: center;
  margin-bottom: 1rem;
  border-bottom: var(--border-width) solid var(--border-color);
  padding-bottom: 0.6rem;
}

.section h3 {
  font-size: 1.15rem;
  margin: 1.5rem 0 0.6rem;
  color: var(--text-main);
}

/* BOX / NEO CARD */
.box {
  background-color: var(--accent-surface);
  border: var(--border-width) solid var(--border-color);
  box-shadow: var(--shadow-offset);
  border-radius: 8px;
  padding: 1.75rem;
  margin-bottom: 1.5rem;
}

.box p {
  line-height: 1.65;
  font-size: 0.95rem;
}

.box-yellow { background-color: #FEF9C3; }
.box-green { background-color: #ECFDF5; }
.box-cyan { background-color: #F0F9FF; }
.box-coral { background-color: #FFF1F2; }

/* HERO BOX (Dokumentasi Header) */
.hero-box {
  background-color: var(--accent-yellow);
  border: var(--border-width) solid var(--border-color);
  box-shadow: var(--shadow-offset-lg);
  border-radius: 10px;
  padding: 2rem;
  margin-bottom: 2rem;
}

.hero-box h1 {
  margin: 0.6rem 0;
}

.hero-box p {
  color: #1E293B;
  font-size: 1.05rem;
  font-weight: 500;
  max-width: 65ch;
}

/* BADGES & METHOD PILLS */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.3rem 0.65rem;
  font-size: 0.8rem;
  font-weight: 800;
  font-family: var(--font-mono);
  border: 2px solid var(--border-color);
  box-shadow: var(--shadow-offset-sm);
  background-color: var(--accent-surface);
  color: var(--text-main);
  border-radius: 4px;
  text-transform: uppercase;
}

.badge-yellow {
  background-color: var(--accent-yellow);
  color: #121212;
}

.badge-green {
  background-color: var(--accent-green);
  color: #121212;
}

.badge-cyan {
  background-color: var(--accent-cyan);
  color: #121212;
}

.badge-coral {
  background-color: var(--accent-coral);
  color: #FFFFFF;
}

.badge-dark {
  background-color: var(--accent-dark);
  color: #FFFFFF;
}

.badge-live {
  background-color: var(--accent-green);
  color: #121212;
  font-size: 0.85rem;
  padding: 0.35rem 0.85rem;
}

.badge.post {
  background-color: var(--accent-green);
  color: #121212;
  font-size: 0.85rem;
  padding: 0.25rem 0.65rem;
}

.badge.get {
  background-color: var(--accent-cyan);
  color: #121212;
  font-size: 0.85rem;
  padding: 0.25rem 0.65rem;
}

/* PULSE INDICATOR */
.pulse-indicator {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-weight: 800;
  font-size: 0.85rem;
  font-family: var(--font-mono);
}

.pulse-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background-color: #10B981;
  box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.7);
  animation: pulseAnimation 1.8s infinite;
}

@keyframes pulseAnimation {
  0% {
    transform: scale(0.95);
    box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.7);
  }
  70% {
    transform: scale(1);
    box-shadow: 0 0 0 8px rgba(16, 185, 129, 0);
  }
  100% {
    transform: scale(0.95);
    box-shadow: 0 0 0 0 rgba(16, 185, 129, 0);
  }
}

/* CODE BLOCKS */
.code-wrap {
  position: relative;
  margin: 0.85rem 0 1.25rem;
}

.code-header {
  background-color: #0F172A;
  padding: 0.5rem 0.85rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border: var(--border-width) solid var(--border-color);
  border-bottom: none;
  border-radius: 6px 6px 0 0;
}

.code-lang-label {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 700;
  color: #94A3B8;
  text-transform: uppercase;
}

.copy-btn {
  background-color: var(--accent-yellow);
  border: 2px solid #000;
  box-shadow: 2px 2px 0px #000;
  padding: 0.25rem 0.6rem;
  font-size: 0.75rem;
  font-weight: 800;
  font-family: var(--font-mono);
  cursor: pointer;
  border-radius: 4px;
}

.copy-btn:hover {
  background-color: #FACC15;
}

.code {
  background-color: var(--accent-dark);
  color: #F8FAFC;
  padding: 1.25rem;
  border: var(--border-width) solid var(--border-color);
  box-shadow: var(--shadow-offset);
  border-radius: 0 0 8px 8px;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  line-height: 1.65;
  overflow-x: auto;
  white-space: pre-wrap;
  word-break: break-all;
}

.code-single {
  border-radius: 6px;
}

/* TABLES */
.table-wrap {
  width: 100%;
  overflow-x: auto;
  border: var(--border-width) solid var(--border-color);
  box-shadow: var(--shadow-offset);
  border-radius: 8px;
  background-color: #FFFFFF;
  margin: 1rem 0;
}

table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  font-size: 0.9rem;
}

thead th {
  background-color: var(--accent-yellow);
  color: var(--text-main);
  font-weight: 800;
  padding: 0.85rem 1rem;
  border-bottom: var(--border-width) solid var(--border-color);
  font-family: var(--font-sans);
  text-transform: uppercase;
  font-size: 0.8rem;
  letter-spacing: 0.05em;
}

tbody td {
  padding: 0.85rem 1rem;
  border-bottom: 2px solid #E2E8F0;
  color: var(--text-main);
  vertical-align: top;
}

tbody tr:last-child td {
  border-bottom: none;
}

tbody tr:hover {
  background-color: #FFFDF0;
}

/* QUICKSTART STEPS */
.steps {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  margin: 1rem 0;
}

.step {
  display: flex;
  gap: 1rem;
  align-items: flex-start;
  background-color: #FFFFFF;
  border: var(--border-width) solid var(--border-color);
  box-shadow: var(--shadow-offset-sm);
  border-radius: 8px;
  padding: 1rem 1.25rem;
}

.step .num {
  flex-shrink: 0;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background-color: var(--accent-yellow);
  border: 2px solid var(--border-color);
  box-shadow: var(--shadow-offset-sm);
  color: #121212;
  font-weight: 900;
  font-size: 0.95rem;
  font-family: var(--font-mono);
  display: flex;
  align-items: center;
  justify-content: center;
}

.step b {
  display: block;
  color: var(--text-main);
  font-size: 1rem;
  margin-bottom: 0.25rem;
}

.step span {
  font-size: 0.9rem;
  color: var(--text-muted);
}

/* FEATURE GRID */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1rem;
  margin-top: 1.25rem;
}

.feature {
  background-color: #FFFFFF;
  border: var(--border-width) solid var(--border-color);
  box-shadow: var(--shadow-offset-sm);
  border-radius: 8px;
  padding: 1.15rem;
  font-size: 0.9rem;
  color: var(--text-muted);
}

.feature b {
  display: block;
  color: var(--text-main);
  font-size: 0.95rem;
  margin-bottom: 0.35rem;
}

/* BUTTONS */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  min-height: 46px;
  padding: 0.65rem 1.25rem;
  font-size: 0.95rem;
  font-weight: 800;
  font-family: var(--font-sans);
  text-decoration: none;
  cursor: pointer;
  border: var(--border-width) solid var(--border-color);
  box-shadow: var(--shadow-offset);
  border-radius: 6px;
  transition: transform 0.12s ease, box-shadow 0.12s ease, background-color 0.12s ease;
  background-color: #FFFFFF;
  color: var(--text-main);
}

.btn:hover:not(:disabled) {
  transform: translate(-2px, -2px);
  box-shadow: var(--shadow-offset-lg);
}

.btn:active:not(:disabled) {
  transform: translate(2px, 2px);
  box-shadow: var(--shadow-offset-sm);
}

.btn:disabled {
  opacity: 0.65;
  cursor: not-allowed;
  transform: none;
  box-shadow: var(--shadow-offset-sm);
}

.btn-sm {
  min-height: 38px;
  padding: 0.4rem 0.85rem;
  font-size: 0.85rem;
}

.btn-primary { background-color: var(--accent-yellow); }
.btn-success { background-color: var(--accent-green); }
.btn-cyan { background-color: var(--accent-cyan); }
.btn-coral { background-color: var(--accent-coral); color: #FFFFFF; }
.btn-dark { background-color: var(--accent-dark); color: #FFFFFF; }

/* INPUTS & FORM ELEMENTS (FIXED FOR ALL INPUT TYPES) */
.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  margin-bottom: 1.15rem;
}

label {
  font-weight: 800;
  font-size: 0.85rem;
  color: var(--text-main);
}

input[type="text"],
input[type="number"],
input[type="url"],
input[type="email"],
input[type="password"],
input[type="search"],
input[type="tel"],
input:not([type]),
select,
textarea {
  width: 100%;
  min-height: 46px;
  padding: 0.65rem 0.85rem;
  font-family: var(--font-sans);
  font-size: 0.95rem;
  color: var(--text-main);
  background-color: #FFFFFF;
  border: var(--border-width) solid var(--border-color);
  box-shadow: var(--shadow-offset-sm);
  border-radius: 6px;
  box-sizing: border-box;
  transition: border-color 0.12s ease, box-shadow 0.12s ease, background-color 0.12s ease;
}

input:focus, select:focus, textarea:focus {
  outline: none;
  background-color: #FFFFFA;
  box-shadow: var(--shadow-offset);
  border-color: #000000;
}

input::placeholder, textarea::placeholder {
  color: #9CA3AF;
  font-family: var(--font-sans);
}

/* INPUT GROUP WITH BUTTON */
.input-group {
  display: flex;
  gap: 0.5rem;
  align-items: stretch;
}

.input-group input {
  flex: 1;
}

/* QRIS PREVIEW CARD */
.qris-preview-container {
  display: flex;
  flex-direction: column;
  align-items: center;
  background-color: #FFFFFF;
  border: var(--border-width) solid var(--border-color);
  box-shadow: var(--shadow-offset);
  border-radius: 12px;
  padding: 1.75rem;
  text-align: center;
  max-width: 440px;
  margin: 1.5rem auto;
}

.qris-image-box {
  position: relative;
  display: inline-block;
  margin: 1rem 0;
  border: 3px solid #000;
  box-shadow: var(--shadow-offset-sm);
  border-radius: 8px;
  padding: 0.75rem;
  background-color: #fff;
}

.qris-image-box img {
  display: block;
  max-width: 100%;
  height: auto;
}

.qris-branding-badge {
  position: absolute;
  bottom: -12px;
  right: 12px;
  background-color: var(--accent-yellow);
  color: #121212;
  font-size: 0.75rem;
  font-weight: 800;
  padding: 0.3rem 0.75rem;
  border: 2px solid #000;
  box-shadow: var(--shadow-offset-sm);
  border-radius: 999px;
  font-family: var(--font-mono);
}

/* ERROR ITEMS */
.err-item {
  display: flex;
  gap: 1rem;
  padding: 0.85rem 0;
  border-bottom: 2px solid #E2E8F0;
  align-items: baseline;
}

.err-item:last-child {
  border-bottom: none;
}

.err-code {
  font-family: var(--font-mono);
  font-weight: 900;
  color: #DC2626;
  min-width: 50px;
}

.err-name {
  font-weight: 800;
  color: var(--text-main);
  font-size: 0.95rem;
}

.err-desc {
  font-size: 0.85rem;
  color: var(--text-muted);
}

/* TOAST */
.toast-container {
  position: fixed;
  bottom: 24px;
  right: 24px;
  z-index: 9999;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.toast {
  min-width: 280px;
  padding: 0.85rem 1.25rem;
  background-color: #FFFFFF;
  border: var(--border-width) solid var(--border-color);
  box-shadow: var(--shadow-offset);
  border-radius: 6px;
  font-weight: 700;
  font-size: 0.9rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  animation: slideInToast 0.2s cubic-bezier(0.16, 1, 0.3, 1);
}

@keyframes slideInToast {
  from {
    transform: translateY(15px);
    opacity: 0;
  }
  to {
    transform: translateY(0);
    opacity: 1;
  }
}

.toast-success { background-color: var(--accent-green); }
.toast-error { background-color: var(--accent-coral); color: #fff; }

/* CONTAINER */
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* FOOTER (FIXED FULL NEO-BRUTALISM STYLES) */
.site-footer {
  background-color: #FFFFFF;
  border-top: var(--border-width) solid var(--border-color);
  padding: 3.5rem 0 2rem;
  margin-top: 4.5rem;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 3rem;
  align-items: start;
}

.footer-col h4 {
  font-size: 1rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 1.25rem;
  display: inline-block;
  padding-bottom: 0.35rem;
  border-bottom: 3px solid var(--accent-yellow);
}

.footer-links {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.footer-links li a {
  color: var(--text-muted);
  text-decoration: none;
  font-size: 0.92rem;
  font-weight: 600;
  transition: color 0.15s ease, transform 0.15s ease;
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
}

.footer-links li a:hover {
  color: var(--text-main);
  transform: translateX(4px);
  font-weight: 800;
}

.footer-bottom {
  border-top: 2px solid #E2E8F0;
  margin-top: 2.5rem;
  padding-top: 1.5rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
  font-size: 0.85rem;
  color: var(--text-muted);
}

/* STATS CARDS */
.stats-card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1.25rem;
  margin-top: 1.5rem;
}

.stat-box {
  background-color: #FFFFFF;
  border: var(--border-width) solid var(--border-color);
  box-shadow: var(--shadow-offset-sm);
  border-radius: 8px;
  padding: 1.25rem;
}

.stat-val {
  font-size: 2rem;
  font-weight: 900;
  line-height: 1.1;
  color: var(--text-main);
}

.stat-lbl {
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--text-muted);
  margin-top: 0.35rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

/* FILTER TABS & CHIPS */
.filter-bar {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex-wrap: wrap;
  margin-bottom: 1.25rem;
}

.filter-btn {
  background-color: #FFFFFF;
  border: 2px solid var(--border-color);
  box-shadow: var(--shadow-offset-sm);
  border-radius: 6px;
  padding: 0.4rem 0.85rem;
  font-size: 0.85rem;
  font-weight: 800;
  cursor: pointer;
  font-family: var(--font-sans);
  transition: all 0.12s ease;
}

.filter-btn:hover {
  background-color: #FEF9C3;
  transform: translate(-1px, -1px);
}

.filter-btn.active {
  background-color: var(--accent-yellow);
  box-shadow: var(--shadow-offset);
}

/* AUTH / DIALOG CONTAINERS */
.auth-container {
  max-width: 480px;
  margin: 2rem auto;
}

.auth-tabs {
  display: flex;
  gap: 0.5rem;
  margin-bottom: 1rem;
}

.auth-tab-btn {
  flex: 1;
  padding: 0.75rem;
  font-weight: 800;
  font-size: 0.95rem;
  border: var(--border-width) solid var(--border-color);
  box-shadow: var(--shadow-offset-sm);
  background-color: #FFFFFF;
  cursor: pointer;
  border-radius: 6px;
  font-family: var(--font-sans);
  transition: all 0.12s ease;
}

.auth-tab-btn.active {
  background-color: var(--accent-yellow);
  box-shadow: var(--shadow-offset);
  transform: translate(-1px, -1px);
}

/* ACCORDION (CARA BAYAR) */
.accordion {
  border: var(--border-width) solid var(--border-color);
  border-radius: 8px;
  background-color: #FFFFFF;
  box-shadow: var(--shadow-offset-sm);
  margin-bottom: 0.75rem;
  overflow: hidden;
}

.accordion-header {
  padding: 1rem 1.25rem;
  font-weight: 800;
  font-size: 0.95rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  cursor: pointer;
  background-color: #FFFFFF;
  border: none;
  width: 100%;
  text-align: left;
  font-family: var(--font-sans);
}

.accordion-header:hover {
  background-color: #FFFDF0;
}

.accordion-content {
  padding: 0 1.25rem 1.25rem;
  font-size: 0.9rem;
  color: var(--text-muted);
  line-height: 1.6;
  border-top: 2px solid #E2E8F0;
}

/* MODAL */
.modal-overlay {
  position: fixed;
  inset: 0;
  background-color: rgba(0, 0, 0, 0.6);
  backdrop-filter: blur(2px);
  z-index: 10000;
  display: none;
  align-items: center;
  justify-content: center;
  padding: 1rem;
}

.modal-overlay.active {
  display: flex;
}

.modal-card {
  background-color: #FFFFFF;
  border: var(--border-width) solid var(--border-color);
  box-shadow: var(--shadow-offset-lg);
  border-radius: 10px;
  max-width: 650px;
  width: 100%;
  max-height: 90vh;
  overflow-y: auto;
  padding: 2rem;
  position: relative;
}

.modal-close-btn {
  position: absolute;
  top: 1.25rem;
  right: 1.25rem;
  background: none;
  border: 2px solid #000;
  border-radius: 4px;
  width: 32px;
  height: 32px;
  font-size: 1.1rem;
  font-weight: 900;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* RESPONSIVE BREAKPOINTS */
@media (max-width: 900px) {
  .menu-toggle-btn {
    display: block;
  }
  .sidebar {
    position: fixed;
    top: 0;
    left: 0;
    height: 100vh;
    transform: translateX(-100%);
    box-shadow: 6px 0px 0px rgba(0,0,0,0.1);
  }
  .sidebar.active {
    transform: translateX(0);
  }
  .sidebar .close-btn {
    display: block;
  }
  .content {
    padding: 1.5rem 1rem 4rem;
  }
  .feature-grid {
    grid-template-columns: 1fr;
  }
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 2rem;
  }
}