/* ==========================================
   DHYANA LAB - Electronics Sales Website
   Main Stylesheet
   ========================================== */

/* ==========================================
   CSS CUSTOM PROPERTIES (Design Tokens)
   Based on www.dhyanalab.in color palette
   ========================================== */
:root {
  /* Theme Colors */
  --color-primary: #b1985d;
  --color-primary-dark: #8f7d5e;
  --color-primary-light: #c4ab7d;

  --color-secondary: #2a2a2a;
  --color-secondary-dark: #1a1a1a;
  --color-secondary-light: #3a3a3a;

  --color-accent: #046307;
  --color-accent-dark: #034a05;

  /* Background Colors - Light */
  --color-bg-primary: #f6f1e7;
  --color-bg-secondary: #b1985d;
  --color-bg-white: #ffffff;

  /* Neutral Colors */
  --color-white: #ffffff;
  --color-gray-50: #f6f1e7;
  --color-gray-100: #e8dfd0;
  --color-gray-200: #d4c8b3;
  --color-gray-300: #c0b199;
  --color-gray-400: #a89674;
  --color-gray-500: #8f7d5e;
  --color-gray-600: #6e624b;
  --color-gray-700: #4d4538;
  --color-gray-800: #3a3a3a;
  --color-gray-900: #2a2a2a;
  --color-black: #000000;

  /* Semantic Colors */
  --color-text-primary: #2a2a2a;
  --color-text-secondary: #6e624b;
  --color-text-muted: #8f7d5e;
  --color-text-inverse: #ffffff;
  --color-heading: #5d4e37;

  /* Typography */
  --font-family-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-size-xs: 0.75rem;
  --font-size-sm: 0.875rem;
  --font-size-base: 1rem;
  --font-size-lg: 1.125rem;
  --font-size-xl: 1.25rem;
  --font-size-2xl: 1.5rem;
  --font-size-3xl: 1.875rem;
  --font-size-4xl: 2.25rem;
  --font-size-5xl: 3rem;


  --font-weight-normal: 400;
  --font-weight-medium: 500;
  --font-weight-semibold: 600;
  --font-weight-bold: 700;

  --line-height-tight: 1.25;
  --line-height-normal: 1.5;
  --line-height-relaxed: 1.75;

  /* Spacing */
  --spacing-1: 0.25rem;
  --spacing-2: 0.5rem;
  --spacing-3: 0.75rem;
  --spacing-4: 1rem;
  --spacing-5: 1.25rem;
  --spacing-6: 1.5rem;
  --spacing-8: 2rem;
  --spacing-10: 2.5rem;
  --spacing-12: 3rem;
  --spacing-16: 4rem;
  --spacing-20: 5rem;
  --spacing-24: 6rem;

  /* Layout */
  --container-max-width: 1200px;
  --container-padding: 1.5rem;

  /* Borders */
  --border-radius-sm: 4px;
  --border-radius-md: 8px;
  --border-radius-lg: 12px;

  /* Shadows */
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.07);
  --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.1);

  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-normal: 250ms ease;
}

/* ==========================================
   RESET & BASE STYLES
   ========================================== */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-family-primary);
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-normal);
  line-height: var(--line-height-normal);
  color: var(--color-text-primary);
  background-color: var(--color-white);
  background-image: url('assets/bg-pattern.png');
  background-repeat: repeat;
  background-size: 400px;
  background-blend-mode: soft-light;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

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

ul,
ol {
  list-style: none;
}

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
}

/* ==========================================
   TYPOGRAPHY
   ========================================== */
h1,
h2,
h3,
h4,
h5,
h6 {
  font-weight: var(--font-weight-semibold);
  line-height: var(--line-height-tight);
  color: var(--color-heading);
}

h1 {
  font-size: var(--font-size-4xl);
  letter-spacing: -0.02em;
}

h2 {
  font-size: var(--font-size-3xl);
  letter-spacing: -0.01em;
}

h3 {
  font-size: var(--font-size-2xl);
}

h4 {
  font-size: var(--font-size-xl);
}

h5 {
  font-size: var(--font-size-lg);
}

h6 {
  font-size: var(--font-size-base);
}

p {
  color: var(--color-text-secondary);
  line-height: var(--line-height-relaxed);
}

/* ==========================================
   LAYOUT UTILITIES
   ========================================== */
.container {
  max-width: var(--container-max-width);
  margin: 0 auto;
  padding: 0 var(--container-padding);
}

.section {
  padding: var(--spacing-20) 0;
}

.section--gray {
  background: linear-gradient(rgba(246, 241, 231, 0.85), rgba(246, 241, 231, 0.85)),
    url('assets/section-bg.png');
  background-size: cover;
  background-position: center;
}

.grid {
  display: grid;
  gap: var(--spacing-8);
}

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

.grid--3 {
  grid-template-columns: repeat(3, 1fr);
}

.grid--4 {
  grid-template-columns: repeat(4, 1fr);
}

@media (max-width: 992px) {

  .grid--3,
  .grid--4 {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {

  .grid--2,
  .grid--3,
  .grid--4 {
    grid-template-columns: 1fr;
  }

  .section {
    padding: var(--spacing-12) 0;
  }
}

/* ==========================================
   HEADER & NAVIGATION
   ========================================== */
.header {
  position: sticky;
  top: 0;
  z-index: 100;
  background-color: var(--color-white);
  border-bottom: 1px solid var(--color-gray-200);
}

.header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}

.header__logo {
  display: flex;
  align-items: center;
  gap: var(--spacing-3);
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-primary);
}

.header__logo img {
  height: 40px;
  width: auto;
}

.nav {
  display: flex;
  align-items: center;
  gap: var(--spacing-8);
}

.nav__link {
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  color: var(--color-text-secondary);
  transition: color var(--transition-fast);
  padding: var(--spacing-2) 0;
  position: relative;
}

.nav__link:hover,
.nav__link--active {
  color: var(--color-primary);
}

.nav__link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background-color: var(--color-primary);
  transition: width var(--transition-normal);
}

.nav__link:hover::after,
.nav__link--active::after {
  width: 100%;
}

/* Mobile Navigation */
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: var(--spacing-2);
}

.nav-toggle__bar {
  width: 24px;
  height: 2px;
  background-color: var(--color-text-primary);
  transition: var(--transition-fast);
}

@media (max-width: 768px) {
  .nav-toggle {
    display: flex;
  }

  .nav {
    display: none;
    position: absolute;
    top: 72px;
    left: 0;
    right: 0;
    background-color: var(--color-white);
    flex-direction: column;
    padding: var(--spacing-6);
    gap: var(--spacing-4);
    border-bottom: 1px solid var(--color-gray-200);
    box-shadow: var(--shadow-md);
  }

  .nav--open {
    display: flex;
  }

  .nav__link {
    font-size: var(--font-size-base);
    padding: var(--spacing-3) 0;
  }
}

/* ==========================================
   HERO SECTION
   ========================================== */
.hero {
  background: linear-gradient(135deg, rgba(246, 241, 231, 0.9) 0%, rgba(255, 255, 255, 0.9) 100%),
    url('assets/hero-bg.png');
  background-size: cover;
  background-position: center;
  color: var(--color-text-primary);
  padding: var(--spacing-24) 0;
  border-bottom: 1px solid var(--color-gray-200);
  position: relative;
}

@keyframes subtleGradient {
  0% {
    background-position: 0% 50%;
  }

  50% {
    background-position: 100% 50%;
  }

  100% {
    background-position: 0% 50%;
  }
}

.hero__content {
  max-width: 700px;
}

.hero__title {
  font-size: var(--font-size-5xl);
  color: var(--color-text-primary);
  margin-bottom: var(--spacing-6);
  line-height: 1.1;
}

.hero__subtitle {
  font-size: var(--font-size-lg);
  color: var(--color-text-secondary);
  margin-bottom: var(--spacing-8);
  line-height: var(--line-height-relaxed);
}

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

@media (max-width: 768px) {
  .hero {
    padding: var(--spacing-16) 0;
  }

  .hero__title {
    font-size: var(--font-size-3xl);
  }

  .hero__subtitle {
    font-size: var(--font-size-base);
  }
}

/* ==========================================
   BUTTONS
   ========================================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-3) var(--spacing-6);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  border-radius: var(--border-radius-sm);
  transition: all var(--transition-fast);
  white-space: nowrap;
}

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

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

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

.btn--secondary:hover {
  background-color: var(--color-primary);
  border-color: var(--color-primary);
  color: var(--color-white);
}

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

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

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

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

/* ==========================================
   CARDS
   ========================================== */
.card {
  background-color: var(--color-white);
  border: 1px solid var(--color-gray-200);
  border-radius: var(--border-radius-md);
  padding: var(--spacing-8);
  transition: box-shadow var(--transition-normal), border-color var(--transition-normal);
}

.card:hover {
  box-shadow: var(--shadow-md);
  border-color: var(--color-gray-300);
}

.card__icon {
  width: 48px;
  height: 48px;
  background-color: var(--color-gray-100);
  border-radius: var(--border-radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--spacing-4);
  color: var(--color-primary);
}

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

.card__text {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
}

/* ==========================================
   SECTION HEADERS
   ========================================== */
.section-header {
  text-align: center;
  max-width: 600px;
  margin: 0 auto var(--spacing-12);
}

.section-header__title {
  margin-bottom: var(--spacing-4);
}

.section-header__subtitle {
  font-size: var(--font-size-lg);
}

/* ==========================================
   CATEGORY GRID
   ========================================== */
.category-card {
  background-color: var(--color-white);
  border: 1px solid var(--color-gray-200);
  border-radius: var(--border-radius-md);
  overflow: hidden;
  transition: box-shadow var(--transition-normal), transform var(--transition-normal);
}

.category-card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-2px);
}

.category-card__image {
  aspect-ratio: 16/10;
  background-color: var(--color-gray-100);
  overflow: hidden;
}

.category-card__image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.category-card__content {
  padding: var(--spacing-6);
}

.category-card__title {
  font-size: var(--font-size-lg);
  margin-bottom: var(--spacing-2);
}

.category-card__text {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  margin-bottom: var(--spacing-4);
}

.category-card__link {
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  color: var(--color-primary);
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-2);
}

.category-card__link:hover {
  color: var(--color-primary-dark);
}

/* ==========================================
   MARKETPLACE BADGES
   ========================================== */
.marketplace-badges {
  display: flex;
  align-items: center;
  gap: var(--spacing-6);
  flex-wrap: wrap;
}

.marketplace-badge {
  display: flex;
  align-items: center;
  gap: var(--spacing-3);
  padding: var(--spacing-3) var(--spacing-5);
  background-color: var(--color-gray-50);
  border: 1px solid var(--color-gray-200);
  border-radius: var(--border-radius-sm);
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  transition: border-color var(--transition-fast);
}

.marketplace-badge:hover {
  border-color: var(--color-gray-400);
}

.marketplace-badge img {
  height: 24px;
  width: auto;
}

/* ==========================================
   FOOTER
   ========================================== */
.footer {
  background-color: var(--color-secondary);
  color: var(--color-white);
  padding: var(--spacing-16) 0 var(--spacing-8);
}

.footer__grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.5fr;
  gap: var(--spacing-12);
  margin-bottom: var(--spacing-12);
}

.footer__brand {
  max-width: 280px;
}

.footer__logo {
  display: flex;
  align-items: center;
  gap: var(--spacing-3);
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-white);
  margin-bottom: var(--spacing-4);
}

.footer__logo img {
  height: 36px;
  width: auto;
}

.footer__description {
  font-size: var(--font-size-sm);
  color: rgba(255, 255, 255, 0.8);
  line-height: var(--line-height-relaxed);
}

.footer__heading {
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-semibold);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: var(--spacing-4);
  color: var(--color-white);
}

.footer__links {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-3);
}

.footer__link {
  font-size: var(--font-size-sm);
  color: rgba(255, 255, 255, 0.8);
  transition: color var(--transition-fast);
}

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

.footer__contact-item {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-1);
  font-size: var(--font-size-sm);
  color: rgba(255, 255, 255, 0.8);
  margin-bottom: var(--spacing-4);
}

.footer__contact-item span:first-child {
  font-weight: var(--font-weight-medium);
  color: rgba(255, 255, 255, 0.6);
}

.footer__contact-item a {
  color: rgba(255, 255, 255, 0.8);
  transition: color var(--transition-fast);
}

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

.footer__bottom {
  padding-top: var(--spacing-8);
  border-top: 1px solid rgba(255, 255, 255, 0.2);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--spacing-4);
}

.footer__copyright {
  font-size: var(--font-size-sm);
  color: rgba(255, 255, 255, 0.6);
}

.footer__legal-links {
  display: flex;
  gap: var(--spacing-6);
}

.footer__legal-link {
  font-size: var(--font-size-sm);
  color: rgba(255, 255, 255, 0.6);
  transition: color var(--transition-fast);
}

.footer__legal-link:hover {
  color: var(--color-white);
}

@media (max-width: 992px) {
  .footer__grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .footer__brand {
    grid-column: 1 / -1;
    max-width: 100%;
  }
}

@media (max-width: 576px) {
  .footer__grid {
    grid-template-columns: 1fr;
  }

  .footer__bottom {
    flex-direction: column;
    text-align: center;
  }
}

/* ==========================================
   FORMS
   ========================================== */
.form-group {
  margin-bottom: var(--spacing-5);
}

.form-label {
  display: block;
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  color: var(--color-text-primary);
  margin-bottom: var(--spacing-2);
}

.form-input,
.form-textarea {
  width: 100%;
  padding: var(--spacing-3) var(--spacing-4);
  font-size: var(--font-size-base);
  font-family: inherit;
  color: var(--color-text-primary);
  background-color: var(--color-white);
  border: 1px solid var(--color-gray-300);
  border-radius: var(--border-radius-sm);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.form-input:focus,
.form-textarea:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(4, 99, 7, 0.15);
}

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

.page-header {
  padding: var(--spacing-16) 0;
  background: linear-gradient(135deg, var(--color-bg-primary) 0%, var(--color-white) 100%);
  border-bottom: 3px solid var(--color-primary);
}

.page-header__title {
  font-size: var(--font-size-4xl);
  margin-bottom: 0;
  font-weight: var(--font-weight-bold);
  letter-spacing: -0.02em;
}

.page-header__subtitle {
  display: none;
}

@media (max-width: 768px) {
  .page-header {
    padding: var(--spacing-8) 0 var(--spacing-6);
  }

  .page-header__title {
    font-size: var(--font-size-2xl);
  }

  .page-header__subtitle {
    font-size: var(--font-size-sm);
  }
}

/* ==========================================
   PRODUCT LISTS
   ========================================== */
.product-section {
  padding: var(--spacing-12) 0;
  border-bottom: 1px solid var(--color-gray-200);
}

.product-section:last-child {
  border-bottom: none;
}

.product-section__title {
  font-size: var(--font-size-2xl);
  margin-bottom: var(--spacing-6);
}

.product-list {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: var(--spacing-4);
}

.product-item {
  padding: var(--spacing-4) var(--spacing-5);
  background-color: var(--color-gray-50);
  border-radius: var(--border-radius-sm);
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  transition: background-color var(--transition-fast);
}

.product-item:hover {
  background-color: var(--color-gray-100);
}

/* ==========================================
   SERVICE CARDS
   ========================================== */
.service-card {
  background-color: var(--color-white);
  border: 1px solid var(--color-gray-200);
  border-radius: var(--border-radius-md);
  padding: var(--spacing-8);
}

.service-card__title {
  font-size: var(--font-size-xl);
  margin-bottom: var(--spacing-4);
  color: var(--color-primary);
}

.service-card__text {
  font-size: var(--font-size-base);
  color: var(--color-text-secondary);
  margin-bottom: var(--spacing-4);
}

.service-card__list {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-2);
}

.service-card__list-item {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  padding-left: var(--spacing-4);
  position: relative;
}

.service-card__list-item::before {
  content: '';
  position: absolute;
  left: 0;
  top: 8px;
  width: 6px;
  height: 6px;
  background-color: var(--color-primary);
  border-radius: 50%;
}

/* ==========================================
   AUDIENCE CARDS
   ========================================== */
.audience-card {
  text-align: center;
  padding: var(--spacing-8);
  background-color: var(--color-white);
  border: 1px solid var(--color-gray-200);
  border-radius: var(--border-radius-md);
  transition: border-color var(--transition-normal), box-shadow var(--transition-normal);
}

.audience-card:hover {
  border-color: var(--color-primary);
  box-shadow: var(--shadow-md);
}

.audience-card__icon {
  width: 64px;
  height: 64px;
  margin: 0 auto var(--spacing-4);
  background-color: var(--color-gray-100);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--font-size-2xl);
}

.audience-card__title {
  font-size: var(--font-size-lg);
  margin-bottom: var(--spacing-2);
}

.audience-card__text {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
}

/* ==========================================
   UTILITY CLASSES
   ========================================== */
.text-center {
  text-align: center;
}

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

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

.mt-4 {
  margin-top: var(--spacing-4);
}

.mt-8 {
  margin-top: var(--spacing-8);
}

.mb-4 {
  margin-bottom: var(--spacing-4);
}

.mb-8 {
  margin-bottom: var(--spacing-8);
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}