/* =============================================================================
   styles.css — Style utama + brand tokens (AJR Group)
   -----------------------------------------------------------------------------
   Task 10.1 — BASE styling + design tokens (desktop-first).
   Catatan: media queries / breakpoint responsif (hamburger show-hide, grid
   kolom Services, dsb.) DITANGANI di task 10.2. File ini hanya berisi token,
   reset import, dan style dasar profesional B2B (navy + bright blue + putih).

   Requirements: 9.4 (palet brand), 12.3 (kontras teks >= 4.5:1)
   Design: styles.css (CSS variables)
   ============================================================================= */

@import url('./reset.css');

/* -----------------------------------------------------------------------------
   1. Design Tokens — CSS Custom Properties
   --------------------------------------------------------------------------- */
:root {
  /* --- Palet brand inti (R9.4) — diselaraskan dengan logo AJR (#142D66) --- */
  --color-navy: #142d66; /* navy blue — warna utama logo AJR */
  --color-bright-blue: #1e6fff; /* bright blue (aksen) */
  --color-white: #ffffff; /* putih       */

  /* --- Turunan biru ---
     #1E6FFF di atas putih untuk teks normal ~ 4.4:1 (sedikit di bawah 4.5:1).
     --color-blue-strong dipakai untuk teks/aksen biru di atas putih agar
     kontras teks normal tetap >= 4.5:1 (R12.3). #1E6FFF tetap dipakai untuk
     gradien/permukaan besar dengan teks PUTIH (white-on-blue lolos). */
  --color-blue-strong: #1558d6; /* ~ 6.2:1 di atas putih  */
  --color-blue-soft: #e8f0ff; /* latar lembut beraksen biru */
  --color-navy-700: #1c3a80; /* navy lebih terang (hover/surface) */
  --color-navy-900: #0e2049; /* navy lebih gelap        */

  /* --- Netral / abu-abu --- */
  --color-gray-50: #f6f8fb; /* latar section selang-seling */
  --color-gray-100: #eef2f7; /* surface kartu halus     */
  --color-gray-200: #dde4ee; /* border default          */
  --color-gray-300: #c3cdda; /* border input            */
  --color-gray-400: #94a3b8; /* placeholder             */

  /* --- Warna teks (semua lolos >= 4.5:1 pada latar yang dimaksud) --- */
  --color-text: #142d66; /* teks utama (navy di atas putih)  */
  --color-text-muted: #475569; /* teks sekunder di atas putih (~7.4:1)    */
  --color-text-invert: #ffffff; /* teks di atas navy/biru                  */
  --color-text-invert-muted: #cdd9f0; /* teks sekunder di atas navy        */

  /* --- Warna semantik --- */
  --color-error: #c1121f; /* pesan validasi (>= 4.5:1 di atas putih) */
  --color-success: #1b7a43; /* konfirmasi sukses                       */

  /* --- Latar & permukaan --- */
  --color-bg: #ffffff;
  --color-surface: #ffffff;
  --color-border: var(--color-gray-200);

  /* --- Gradien brand (hero & aksen) --- */
  --gradient-brand: linear-gradient(135deg, #142d66 0%, #1c4aa8 55%, #1e6fff 100%);

  /* --- Tipografi: font stack modern sans-serif --- */
  --font-sans: 'Inter', 'Segoe UI', system-ui, -apple-system, 'Helvetica Neue',
    Arial, 'Noto Sans', sans-serif;

  /* Skala ukuran font (desktop-first, type scale ~1.25) */
  --fs-xs: 0.8125rem; /* 13px */
  --fs-sm: 0.9375rem; /* 15px */
  --fs-base: 1rem; /* 16px body */
  --fs-md: 1.125rem; /* 18px */
  --fs-lg: 1.375rem; /* 22px */
  --fs-xl: 1.75rem; /* 28px h3 */
  --fs-2xl: 2.25rem; /* 36px h2 */
  --fs-3xl: 3.25rem; /* 52px hero h1 */

  /* Bobot font */
  --fw-regular: 400;
  --fw-medium: 500;
  --fw-semibold: 600;
  --fw-bold: 700;

  /* Tinggi baris */
  --lh-tight: 1.15;
  --lh-heading: 1.25;
  --lh-body: 1.65;

  /* --- Spacing scale --- */
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.5rem;
  --space-6: 2rem;
  --space-7: 3rem;
  --space-8: 4rem;
  --space-9: 6rem;

  /* --- Layout --- */
  --container-max: 1200px;
  --container-pad: 1.5rem;
  --navbar-height: 72px;

  /* --- Radius --- */
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-pill: 999px;

  /* --- Shadow (kedalaman B2B yang halus) --- */
  --shadow-xs: 0 1px 2px rgba(10, 31, 68, 0.06);
  --shadow-sm: 0 2px 8px rgba(10, 31, 68, 0.08);
  --shadow-md: 0 8px 24px rgba(10, 31, 68, 0.1);
  --shadow-lg: 0 18px 40px rgba(10, 31, 68, 0.14);
  --shadow-focus: 0 0 0 3px rgba(30, 111, 255, 0.35);

  /* --- Transisi --- */
  --transition-fast: 0.15s ease;
  --transition-base: 0.25s ease;

  /* Offset scroll agar judul section tidak tertutup navbar sticky (R1.3) */
  scroll-padding-top: var(--navbar-height);
}

/* -----------------------------------------------------------------------------
   2. Base / Typography
   --------------------------------------------------------------------------- */
body {
  font-family: var(--font-sans);
  font-size: var(--fs-base);
  font-weight: var(--fw-regular);
  line-height: var(--lh-body);
  color: var(--color-text); /* navy di atas putih -> kontras ~15:1 */
  background-color: var(--color-bg);
}

h1,
h2,
h3,
h4 {
  color: var(--color-navy);
  font-weight: var(--fw-bold);
  line-height: var(--lh-heading);
  letter-spacing: -0.01em;
}

h1 {
  font-size: var(--fs-3xl);
  line-height: var(--lh-tight);
}

h2 {
  font-size: var(--fs-2xl);
}

h3 {
  font-size: var(--fs-xl);
}

h4 {
  font-size: var(--fs-lg);
}

p {
  color: var(--color-text-muted);
}

a {
  color: var(--color-blue-strong); /* biru kuat -> teks biru di atas putih lolos 4.5:1 */
  transition: color var(--transition-fast);
}

a:hover {
  color: var(--color-navy);
}

strong {
  font-weight: var(--fw-semibold);
  color: var(--color-text);
}

/* Fokus keyboard yang jelas & konsisten (aksesibilitas) */
:focus-visible {
  outline: 3px solid var(--color-bright-blue);
  outline-offset: 2px;
  border-radius: var(--radius-sm);
}

/* Hanya untuk pembaca layar */
.visually-hidden {
  position: absolute !important;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* -----------------------------------------------------------------------------
   3. Layout helpers — Container & Section
   --------------------------------------------------------------------------- */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: var(--container-pad);
}

.section {
  padding-block: var(--space-9);
}

/* Latar selang-seling untuk ritme visual antar section */
.section--alt {
  background-color: var(--color-gray-50);
}

/* Offset anchor agar judul berhenti di bawah navbar sticky (R1.3) */
section[id] {
  scroll-margin-top: var(--navbar-height);
}

.section__header {
  max-width: 720px;
  margin-bottom: var(--space-7);
}

.section__eyebrow {
  display: inline-block;
  font-size: var(--fs-sm);
  font-weight: var(--fw-semibold);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-blue-strong);
  margin-bottom: var(--space-2);
}

.section__title {
  margin-bottom: var(--space-3);
}

.section__subtitle {
  font-size: var(--fs-md);
  color: var(--color-text-muted);
}

/* -----------------------------------------------------------------------------
   4. Buttons / CTA
   --------------------------------------------------------------------------- */
.btn,
.cta-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: 0.85rem 1.75rem;
  font-size: var(--fs-base);
  font-weight: var(--fw-semibold);
  line-height: 1.2;
  text-align: center;
  border: 2px solid transparent;
  border-radius: var(--radius-pill);
  cursor: pointer;
  transition: background-color var(--transition-base),
    color var(--transition-base), border-color var(--transition-base),
    transform var(--transition-fast), box-shadow var(--transition-base);
}

.btn:active,
.cta-button:active {
  transform: translateY(1px);
}

/* Primary: latar biru kuat + teks putih (white-on-#1558D6 ~ 6.2:1) */
.btn--primary,
.cta-button {
  background-color: var(--color-blue-strong);
  color: var(--color-text-invert);
  box-shadow: var(--shadow-sm);
}

.btn--primary:hover,
.cta-button:hover {
  background-color: var(--color-navy);
  color: var(--color-text-invert);
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

/* Secondary: outline navy di atas putih */
.btn--secondary {
  background-color: transparent;
  color: var(--color-navy);
  border-color: var(--color-gray-300);
}

.btn--secondary:hover {
  border-color: var(--color-blue-strong);
  color: var(--color-blue-strong);
}

/* Ghost di atas latar gelap (hero) */
.btn--ghost {
  background-color: transparent;
  color: var(--color-text-invert);
  border-color: rgba(255, 255, 255, 0.6);
}

.btn--ghost:hover {
  background-color: rgba(255, 255, 255, 0.12);
  color: var(--color-text-invert);
  border-color: var(--color-white);
}

.btn--block {
  width: 100%;
}

/* -----------------------------------------------------------------------------
   5. Navbar (sticky look) — base (R1.4 sticky)
   --------------------------------------------------------------------------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background-color: rgba(255, 255, 255, 0.92);
  backdrop-filter: saturate(160%) blur(10px);
  border-bottom: 1px solid var(--color-gray-200);
  box-shadow: var(--shadow-xs);
}

.navbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-5);
  height: var(--navbar-height);
  width: 100%;
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: var(--container-pad);
}

/* Logo "AJR GROUP" (R1.5) */
.navbar__logo,
.logo {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--fs-lg);
  font-weight: var(--fw-bold);
  letter-spacing: 0.04em;
  color: var(--color-navy);
  text-transform: uppercase;
}

.navbar__logo:hover,
.logo:hover {
  color: var(--color-blue-strong);
}

/* Daftar tautan */
.nav-links {
  display: flex;
  align-items: center;
  gap: var(--space-6);
  list-style: none;
}

.nav-links a {
  position: relative;
  display: inline-block;
  padding-block: var(--space-2);
  font-size: var(--fs-sm);
  font-weight: var(--fw-medium);
  color: var(--color-text); /* navy di atas putih */
}

.nav-links a::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: -2px;
  width: 100%;
  height: 2px;
  background-color: var(--color-bright-blue);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--transition-base);
}

.nav-links a:hover {
  color: var(--color-blue-strong);
}

.nav-links a:hover::after {
  transform: scaleX(1);
}

/* State aktif (R1.7) — dapat dibedakan secara visual */
.nav-links a.is-active {
  color: var(--color-blue-strong);
  font-weight: var(--fw-semibold);
}

.nav-links a.is-active::after {
  transform: scaleX(1);
}

/* Tombol hamburger (R9.2) — base look; visibilitas/breakpoint diatur di 10.2.
   Default desktop-first: disembunyikan; task 10.2 menampilkannya < 768px. */
.hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  padding: 10px;
  background: transparent;
  border: 1px solid var(--color-gray-200);
  border-radius: var(--radius-sm);
  cursor: pointer;
}

.hamburger__bar,
.hamburger span {
  display: block;
  width: 100%;
  height: 2px;
  background-color: var(--color-navy);
  border-radius: 2px;
  transition: transform var(--transition-base), opacity var(--transition-base);
}

/* -----------------------------------------------------------------------------
   6. Hero Section — gradien brand + CTA (R2)
   --------------------------------------------------------------------------- */
.hero {
  position: relative;
  background: var(--gradient-brand);
  color: var(--color-text-invert);
  padding-block: var(--space-9);
  overflow: hidden;
}

/* Aksen dekoratif halus (glow) di latar hero */
.hero::after {
  content: '';
  position: absolute;
  top: -20%;
  right: -10%;
  width: 520px;
  height: 520px;
  background: radial-gradient(
    circle,
    rgba(30, 111, 255, 0.45) 0%,
    rgba(30, 111, 255, 0) 70%
  );
  pointer-events: none;
}

.hero__inner {
  position: relative;
  z-index: 1;
  max-width: 820px;
}

/* Nama brand "AJR GROUP" (R2.4) */
.hero__brand {
  display: inline-block;
  font-size: var(--fs-sm);
  font-weight: var(--fw-semibold);
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--color-text-invert);
  background-color: rgba(255, 255, 255, 0.14);
  border: 1px solid rgba(255, 255, 255, 0.25);
  padding: 0.4rem 1rem;
  border-radius: var(--radius-pill);
  margin-bottom: var(--space-5);
}

/* Tagline (R2.1) */
.hero__title {
  color: var(--color-text-invert);
  font-size: var(--fs-3xl);
  line-height: var(--lh-tight);
  margin-bottom: var(--space-4);
}

.hero__title .accent {
  color: #8fbaff; /* biru terang di atas navy gelap -> kontras tinggi */
}

/* Positioning (R2.1) */
.hero__subtitle {
  font-size: var(--fs-lg);
  font-weight: var(--fw-medium);
  color: var(--color-text-invert);
  margin-bottom: var(--space-3);
}

.hero__text {
  font-size: var(--fs-md);
  color: var(--color-text-invert-muted);
  max-width: 620px;
  margin-bottom: var(--space-7);
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-4);
}

/* CTA hero menonjol di atas latar gelap: latar putih, teks navy */
.hero .cta-button {
  background-color: var(--color-white);
  color: var(--color-navy);
  box-shadow: var(--shadow-md);
}

.hero .cta-button:hover {
  background-color: var(--color-blue-soft);
  color: var(--color-navy);
}

/* -----------------------------------------------------------------------------
   7. About Section (R3)
   --------------------------------------------------------------------------- */
.about__grid {
  display: grid;
  grid-template-columns: 1.3fr 1fr;
  gap: var(--space-8);
  align-items: center;
}

.about__lead {
  font-size: var(--fs-md);
  color: var(--color-text);
  margin-bottom: var(--space-4);
}

.about__text {
  margin-bottom: var(--space-4);
}

/* Hashtag brand (R3.2) */
.about__tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  list-style: none;
  margin-top: var(--space-5);
}

.hashtag,
.about__tags li {
  display: inline-block;
  font-size: var(--fs-sm);
  font-weight: var(--fw-semibold);
  color: var(--color-blue-strong);
  background-color: var(--color-blue-soft);
  padding: 0.4rem 0.9rem;
  border-radius: var(--radius-pill);
}

/* Kartu statistik / highlight opsional di About */
.about__highlight {
  background: var(--color-navy);
  color: var(--color-text-invert);
  border-radius: var(--radius-lg);
  padding: var(--space-7);
  box-shadow: var(--shadow-md);
}

.about__highlight h3 {
  color: var(--color-text-invert);
  margin-bottom: var(--space-3);
}

.about__highlight p {
  color: var(--color-text-invert-muted);
}

/* -----------------------------------------------------------------------------
   8. Services Section — kartu layanan (R4)
   Grid kolom responsif (1/2/4) diatur di task 10.2. Base: 4 kolom desktop.
   --------------------------------------------------------------------------- */
.services__grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-5);
}

.service-card {
  display: flex;
  flex-direction: column;
  background-color: var(--color-surface);
  border: 1px solid var(--color-gray-200);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition-base),
    box-shadow var(--transition-base), border-color var(--transition-base);
}

.service-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: var(--color-blue-strong);
}

/* Ikon kartu */
.service-card__icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 52px;
  height: 52px;
  margin-bottom: var(--space-4);
  border-radius: var(--radius-md);
  background: var(--gradient-brand);
  color: var(--color-text-invert);
  font-size: var(--fs-lg);
}

.service-card__title {
  font-size: var(--fs-lg);
  margin-bottom: var(--space-3);
}

/* Daftar rincian layanan (R4.2–R4.5) */
.service-card__list {
  list-style: none;
  margin-bottom: var(--space-5);
  flex-grow: 1;
}

.service-card__list li {
  position: relative;
  padding-left: 1.5rem;
  margin-bottom: var(--space-2);
  font-size: var(--fs-sm);
  color: var(--color-text-muted);
}

.service-card__list li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0.55em;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background-color: var(--color-bright-blue);
}

/* CTA per kartu menuju Contact (R4.6) */
.service-card .cta-button,
.service-card__cta {
  margin-top: auto;
  align-self: flex-start;
  padding: 0.6rem 1.2rem;
  font-size: var(--fs-sm);
}

/* -----------------------------------------------------------------------------
   9. Why Choose Us Section (R5)
   --------------------------------------------------------------------------- */
.why-choose__grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-5);
}

.why-item {
  background-color: var(--color-surface);
  border: 1px solid var(--color-gray-200);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  box-shadow: var(--shadow-xs);
  transition: transform var(--transition-base),
    box-shadow var(--transition-base);
}

.why-item:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
}

.why-item__icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  margin-bottom: var(--space-4);
  border-radius: 50%;
  background-color: var(--color-blue-soft);
  color: var(--color-blue-strong);
  font-size: var(--fs-lg);
}

/* Pasangan poin + deskripsi (R5.3) */
.why-item__title {
  font-size: var(--fs-md);
  margin-bottom: var(--space-2);
}

.why-item__text {
  font-size: var(--fs-sm);
  color: var(--color-text-muted);
}

/* -----------------------------------------------------------------------------
   10. Contact Section + Consultation Form (R6, R7)
   --------------------------------------------------------------------------- */
.contact {
  background-color: var(--color-gray-50);
}

.contact__grid {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: var(--space-8);
  align-items: start;
}

/* Teks pemasaran "Free Consultation Available" (R6.1) */
.contact__badge {
  display: inline-block;
  font-size: var(--fs-md);
  font-weight: var(--fw-semibold);
  color: var(--color-navy);
  background-color: var(--color-blue-soft);
  padding: 0.5rem 1.1rem;
  border-radius: var(--radius-pill);
  margin-bottom: var(--space-5);
}

.contact__intro {
  font-size: var(--fs-md);
  color: var(--color-text-muted);
  margin-bottom: var(--space-6);
}

/* Blok info kontak yang dapat disalin (R6.2, fallback R7.8) */
.contact__channels {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.contact-channel {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  padding: var(--space-4);
  background-color: var(--color-surface);
  border: 1px solid var(--color-gray-200);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-xs);
}

.contact-channel__icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  flex-shrink: 0;
  border-radius: var(--radius-md);
  background: var(--gradient-brand);
  color: var(--color-text-invert);
}

.contact-channel__label {
  display: block;
  font-size: var(--fs-xs);
  font-weight: var(--fw-semibold);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--color-text-muted);
}

.contact-channel__value {
  font-size: var(--fs-base);
  font-weight: var(--fw-semibold);
  color: var(--color-navy);
}

/* --- Form --- */
.consultation-form {
  background-color: var(--color-surface);
  border: 1px solid var(--color-gray-200);
  border-radius: var(--radius-lg);
  padding: var(--space-7);
  box-shadow: var(--shadow-md);
}

.form-group {
  margin-bottom: var(--space-5);
}

.form-label {
  display: block;
  margin-bottom: var(--space-2);
  font-size: var(--fs-sm);
  font-weight: var(--fw-semibold);
  color: var(--color-text);
}

/* Penanda field wajib (R6.4) */
.form-label .required {
  color: var(--color-error);
  margin-left: 2px;
}

.form-control,
.consultation-form input,
.consultation-form textarea {
  display: block;
  width: 100%;
  padding: 0.8rem 1rem;
  font-size: var(--fs-base);
  color: var(--color-text);
  background-color: var(--color-white);
  border: 1.5px solid var(--color-gray-300);
  border-radius: var(--radius-md);
  transition: border-color var(--transition-fast),
    box-shadow var(--transition-fast);
}

.form-control::placeholder,
.consultation-form input::placeholder,
.consultation-form textarea::placeholder {
  color: var(--color-gray-400);
}

.form-control:focus,
.consultation-form input:focus,
.consultation-form textarea:focus {
  outline: none;
  border-color: var(--color-blue-strong);
  box-shadow: var(--shadow-focus);
}

.consultation-form textarea {
  min-height: 140px;
  resize: vertical;
}

/* State error field (R6.5, R6.7, R7.7) */
.form-control[aria-invalid='true'],
.consultation-form input[aria-invalid='true'],
.consultation-form textarea[aria-invalid='true'] {
  border-color: var(--color-error);
  box-shadow: 0 0 0 3px rgba(193, 18, 31, 0.15);
}

/* Pesan validasi per field */
.form-error {
  display: block;
  margin-top: var(--space-2);
  font-size: var(--fs-sm);
  font-weight: var(--fw-medium);
  color: var(--color-error);
}

/* Pesan status submit (sedang diproses / konfirmasi / error) */
.form-status {
  margin-top: var(--space-4);
  padding: var(--space-4);
  border-radius: var(--radius-md);
  font-size: var(--fs-sm);
  font-weight: var(--fw-medium);
}

.form-status--success {
  color: var(--color-success);
  background-color: #e7f6ee;
  border: 1px solid #b6e3c8;
}

.form-status--error {
  color: var(--color-error);
  background-color: #fdeaec;
  border: 1px solid #f3c3c8;
}

.form-status--info {
  color: var(--color-navy);
  background-color: var(--color-blue-soft);
  border: 1px solid #c7dcff;
}

/* -----------------------------------------------------------------------------
   11. Footer (R8)
   --------------------------------------------------------------------------- */
.site-footer {
  background-color: var(--color-navy-900);
  color: var(--color-text-invert-muted);
  padding-block: var(--space-8) var(--space-6);
}

.footer__grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: var(--space-7);
  margin-bottom: var(--space-7);
}

.footer__brand {
  font-size: var(--fs-lg);
  font-weight: var(--fw-bold);
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--color-text-invert);
  margin-bottom: var(--space-3);
}

.footer__text {
  color: var(--color-text-invert-muted);
  font-size: var(--fs-sm);
  max-width: 360px;
}

.footer__heading {
  font-size: var(--fs-sm);
  font-weight: var(--fw-semibold);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-text-invert);
  margin-bottom: var(--space-4);
}

.footer__links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.footer__links a {
  color: var(--color-text-invert-muted);
  font-size: var(--fs-sm);
}

.footer__links a:hover {
  color: var(--color-white);
}

.footer__bottom {
  padding-top: var(--space-5);
  border-top: 1px solid rgba(255, 255, 255, 0.12);
  font-size: var(--fs-sm);
  color: var(--color-text-invert-muted);
}

/* =============================================================================
   12. Responsive Layout & Media Queries — Task 10.2
   -----------------------------------------------------------------------------
   Tata letak responsif untuk tiga kategori breakpoint (R9.1):
     - mobile : viewport < 768px        -> @media (max-width: 767.98px)
     - tablet : 768px – 1024px          -> @media (min-width: 768px) and (max-width: 1024px)
     - desktop: > 1024px                -> base styles di atas (tidak di-override)

   Cakupan:
     - Navbar sticky sudah di base (R1.4); di sini hamburger tampil < 768px (R9.2)
       dan menu .nav-links runtuh menjadi panel dropdown, ditampilkan saat
       `.nav-links.is-open` ATAU `.hamburger[aria-expanded="true"]` (R9.3),
       selaras dengan NavigationController.
     - Grid Services: 1 kolom (<768px, R9.5), 2 kolom (tablet), 4 kolom (desktop, base).
     - why-choose / about / contact / footer runtuh sesuai breakpoint.
     - Ukuran font hero & padding section diperkecil di mobile untuk keterbacaan.
     - Penjagaan agar tidak ada horizontal overflow di setiap breakpoint (R9.6).

   Requirements: 1.4, 9.1, 9.2, 9.5, 9.6
   Design: styles.css (media queries)
   ============================================================================= */

/* -----------------------------------------------------------------------------
   12.0 Layout dasar nav-container (shared, semua breakpoint)
   Wrapper <div class="nav-container"> menata logo | hamburger | menu dalam satu
   baris. Tanpa ini elemen nav akan menumpuk vertikal. Bukan override media —
   sengaja dijaga ringkas agar nav berfungsi di seluruh lebar.
   --------------------------------------------------------------------------- */
.nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-5);
  width: 100%;
}

/* -----------------------------------------------------------------------------
   12.1 Penjagaan horizontal overflow (shared) — R9.6
   Izinkan anak grid/flex menyusut (default min-width:auto bisa memicu overflow)
   dan paksa nilai panjang (email/telepon) untuk membungkus pada layar sempit.
   Catatan: TIDAK memakai overflow-x:hidden pada html/body agar position:sticky
   navbar tidak rusak.
   --------------------------------------------------------------------------- */
.services__grid > *,
.why-choose__grid > *,
.about__grid > *,
.contact__grid > *,
.footer__grid > * {
  min-width: 0;
}

.contact-channel__value,
.footer__links a {
  overflow-wrap: anywhere;
}

/* =============================================================================
   12.2 TABLET — (768px – 1024px)
   ============================================================================= */
@media (min-width: 768px) and (max-width: 1024px) {
  :root {
    /* Hero sedikit lebih ringkas di tablet */
    --fs-3xl: 2.75rem; /* 44px (dari 52px) */
    --fs-2xl: 2rem; /* 32px */
    --space-9: 4.5rem; /* padding section lebih ringkas */
  }

  /* Services: 2 kolom di tablet (R9.5 -> 4 kolom hanya di desktop) */
  .services__grid {
    grid-template-columns: repeat(2, 1fr);
  }

  /* Why Choose Us: 2 kolom di tablet */
  .why-choose__grid {
    grid-template-columns: repeat(2, 1fr);
  }

  /* About & Contact: runtuh ke satu kolom agar teks/form lega */
  .about__grid,
  .contact__grid {
    grid-template-columns: 1fr;
    gap: var(--space-6);
  }

  /* Footer: 2 kolom di tablet */
  .footer__grid {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-6);
  }
}

/* =============================================================================
   12.3 MOBILE — (< 768px)
   ============================================================================= */
@media (max-width: 767.98px) {
  :root {
    /* Skala tipografi diperkecil untuk keterbacaan di layar kecil */
    --fs-3xl: 2.125rem; /* 34px hero (dari 52px) */
    --fs-2xl: 1.625rem; /* 26px */
    --fs-xl: 1.3125rem; /* 21px */
    --fs-lg: 1.1875rem; /* 19px */

    /* Padding section & hero lebih rapat (dipakai .section & .hero padding-block) */
    --space-9: 3rem;
    --space-8: 2.5rem;
    --space-7: 2.25rem;

    /* Navbar sedikit lebih pendek + padding tepi lebih kecil di mobile */
    --navbar-height: 64px;
    --container-pad: 1.125rem;
  }

  /* --- Navbar: tampilkan hamburger, sembunyikan menu inline (R9.2) --- */
  .hamburger {
    display: flex;
  }

  /* Menu menjadi panel dropdown di bawah navbar; tersembunyi secara default,
     ditampilkan saat dibuka (R9.3). Diposisikan terhadap .site-header (sticky). */
  .nav-links {
    position: absolute;
    top: var(--navbar-height);
    left: 0;
    right: 0;
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: var(--space-2) var(--container-pad) var(--space-4);
    background-color: var(--color-white);
    border-bottom: 1px solid var(--color-gray-200);
    box-shadow: var(--shadow-md);
  }

  /* Tampilkan saat .is-open (di-set NavigationController) atau aria-expanded */
  .nav-links.is-open,
  .hamburger[aria-expanded='true'] ~ .nav-links {
    display: flex;
  }

  /* Tautan menu vertikal: area sentuh penuh + pemisah halus */
  .nav-links a {
    display: block;
    width: 100%;
    padding: var(--space-3) 0;
    font-size: var(--fs-base);
    border-bottom: 1px solid var(--color-gray-100);
  }

  /* Nonaktifkan underline animasi (lebih cocok untuk daftar vertikal) */
  .nav-links a::after {
    display: none;
  }

  /* Animasi hamburger -> ikon X saat menu terbuka */
  .hamburger[aria-expanded='true'] .hamburger-bar:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
  }

  .hamburger[aria-expanded='true'] .hamburger-bar:nth-child(2) {
    opacity: 0;
  }

  .hamburger[aria-expanded='true'] .hamburger-bar:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
  }

  /* --- Hero lebih ringkas di mobile --- */
  .hero__actions {
    flex-direction: column;
    align-items: stretch;
  }

  .hero__actions .btn,
  .hero__actions .cta-button,
  .hero-cta {
    width: 100%;
  }

  /* --- Grid: semua runtuh ke satu kolom --- */
  .services__grid {
    grid-template-columns: 1fr; /* R9.5: empat kartu satu kolom di mobile */
  }

  .why-choose__grid,
  .about__grid,
  .contact__grid,
  .footer__grid {
    grid-template-columns: 1fr;
    gap: var(--space-5);
  }

  /* Footer rata kiri-atas saat satu kolom */
  .footer__grid {
    gap: var(--space-6);
  }

  /* Padding internal kartu/form sedikit dikecilkan agar muat di layar sempit */
  .service-card,
  .why-item {
    padding: var(--space-5);
  }

  .consultation-form {
    padding: var(--space-5);
  }
}

/* -----------------------------------------------------------------------------
   13. Logo (navbar, hero, footer)
   --------------------------------------------------------------------------- */

/* Navbar logo: tinggi tetap, lebar proporsional */
.nav-logo {
  display: inline-flex;
  align-items: center;
}

.nav-logo__img {
  height: 40px;
  width: auto;
  display: block;
}

/* Hero logo: tampil di atas brand/tagline, dengan latar terang agar logo
   (yang umumnya berwarna navy) tetap terbaca di atas gradien navy hero. */
.hero-logo {
  height: 96px;
  width: auto;
  display: block;
  margin-bottom: var(--space-5);
  background-color: var(--color-white);
  padding: var(--space-3);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-md);
}

/* Footer logo */
.footer__logo {
  height: 48px;
  width: auto;
  display: block;
  margin-bottom: var(--space-4);
  background-color: var(--color-white);
  padding: var(--space-2);
  border-radius: var(--radius-sm);
}

/* Pada mobile, perkecil sedikit logo hero agar proporsional */
@media (max-width: 767.98px) {
  .hero-logo {
    height: 72px;
  }
  .nav-logo__img {
    height: 34px;
  }
}

/* -----------------------------------------------------------------------------
   14. Portfolio Section
   --------------------------------------------------------------------------- */
.portfolio__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-5);
}

.portfolio-card {
  display: flex;
  flex-direction: column;
  background-color: var(--color-surface);
  border: 1px solid var(--color-gray-200);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition-base),
    box-shadow var(--transition-base);
}

.portfolio-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.portfolio-card__media {
  display: flex;
  align-items: center;
  justify-content: center;
  height: 140px;
  font-size: 3rem;
  background: var(--gradient-brand);
  color: var(--color-text-invert);
}

.portfolio-card__body {
  display: flex;
  flex-direction: column;
  padding: var(--space-5);
  flex-grow: 1;
}

.portfolio-card__tag {
  align-self: flex-start;
  font-size: var(--fs-xs);
  font-weight: var(--fw-semibold);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--color-blue-strong);
  background-color: var(--color-blue-soft);
  padding: 0.3rem 0.7rem;
  border-radius: var(--radius-pill);
  margin-bottom: var(--space-3);
}

.portfolio-card__title {
  font-size: var(--fs-lg);
  margin-bottom: var(--space-3);
}

.portfolio-card__text {
  font-size: var(--fs-sm);
  color: var(--color-text-muted);
  margin-bottom: var(--space-4);
  flex-grow: 1;
}

.portfolio-card__result {
  font-size: var(--fs-sm);
  color: var(--color-text);
  padding-top: var(--space-3);
  border-top: 1px solid var(--color-gray-200);
}

.portfolio__note {
  text-align: center;
  margin-top: var(--space-7);
  font-size: var(--fs-md);
  color: var(--color-text-muted);
}

.portfolio__note-link {
  font-weight: var(--fw-semibold);
  color: var(--color-blue-strong);
  white-space: nowrap;
}

.portfolio__note-link:hover {
  color: var(--color-navy);
}

/* -----------------------------------------------------------------------------
   15. Testimonials Section
   --------------------------------------------------------------------------- */
.testimonials__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-5);
}

.testimonial-card {
  display: flex;
  flex-direction: column;
  margin: 0;
  background-color: var(--color-surface);
  border: 1px solid var(--color-gray-200);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  box-shadow: var(--shadow-sm);
}

.testimonial-card__stars {
  color: #f5a623;
  font-size: var(--fs-md);
  letter-spacing: 2px;
  margin-bottom: var(--space-4);
}

.testimonial-card__quote {
  margin: 0 0 var(--space-5);
  font-size: var(--fs-base);
  line-height: var(--lh-body);
  color: var(--color-text);
  font-style: italic;
  flex-grow: 1;
}

.testimonial-card__author {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.testimonial-card__avatar {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  flex-shrink: 0;
  border-radius: 50%;
  background: var(--gradient-brand);
  color: var(--color-text-invert);
  font-weight: var(--fw-bold);
  font-size: var(--fs-md);
}

.testimonial-card__name {
  display: block;
  font-weight: var(--fw-semibold);
  color: var(--color-navy);
  font-size: var(--fs-sm);
}

.testimonial-card__role {
  display: block;
  font-size: var(--fs-xs);
  color: var(--color-text-muted);
}

/* Responsif Portfolio & Testimonials */
@media (min-width: 768px) and (max-width: 1024px) {
  .portfolio__grid,
  .testimonials__grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 767.98px) {
  .portfolio__grid,
  .testimonials__grid {
    grid-template-columns: 1fr;
  }
}