/* ============================================
   PD Design — Styles
   ============================================
   1. CSS Custom Properties
   2. Reset & Base
   3. Layout
   4. Typography
   5. Buttons
   6. Header / Navigation
   7. Hero
   8. Services
   9. About
   10. Work / Portfolio
   11. Process
   12. Contact
   13. Footer
   14. Animations
   15. Responsive
   ============================================ */

/* ============================================
   1. CSS CUSTOM PROPERTIES
   ============================================ */

:root {
  /* Backgrounds */
  --color-bg-primary: #FAFAF8;
  --color-bg-secondary: #F2F1ED;
  --color-bg-dark: #111111;

  /* Text */
  --color-text-primary: #1A1A1A;
  --color-text-secondary: #6B6B6B;
  --color-text-muted: #9A9A9A;
  --color-text-on-dark: #FAFAF8;

  /* Accent */
  --color-accent: #2B3FE0;
  --color-accent-hover: #1E2FB3;
  --color-accent-light: rgba(43, 63, 224, 0.08);

  /* Borders */
  --color-border: rgba(0, 0, 0, 0.08);
  --color-border-strong: rgba(0, 0, 0, 0.15);

  /* Spacing (8px base) */
  --space-xs: 0.5rem;
  --space-sm: 1rem;
  --space-md: 1.5rem;
  --space-lg: 2rem;
  --space-xl: 3rem;
  --space-2xl: 4rem;
  --space-3xl: 6rem;
  --space-4xl: 8rem;

  /* Section padding */
  --section-padding: var(--space-3xl) 0;

  /* Typography */
  --font-heading: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;

  /* Font sizes (fluid) */
  --text-xs: clamp(0.75rem, 0.7rem + 0.25vw, 0.875rem);
  --text-sm: clamp(0.875rem, 0.825rem + 0.25vw, 1rem);
  --text-base: clamp(1rem, 0.95rem + 0.25vw, 1.125rem);
  --text-lg: clamp(1.125rem, 1rem + 0.5vw, 1.375rem);
  --text-xl: clamp(1.25rem, 1.1rem + 0.75vw, 1.75rem);
  --text-2xl: clamp(1.5rem, 1.2rem + 1.5vw, 2.5rem);
  --text-3xl: clamp(2rem, 1.5rem + 2.5vw, 3.5rem);
  --text-4xl: clamp(2.5rem, 1.8rem + 3.5vw, 5rem);

  /* Line heights */
  --leading-tight: 1.1;
  --leading-snug: 1.25;
  --leading-normal: 1.6;

  /* Letter spacing */
  --tracking-tight: -0.02em;
  --tracking-normal: 0;
  --tracking-wide: 0.05em;
  --tracking-wider: 0.1em;

  /* Transitions */
  --transition-fast: 200ms cubic-bezier(0.25, 0.1, 0.25, 1);
  --transition-base: 350ms cubic-bezier(0.25, 0.1, 0.25, 1);
  --transition-slow: 600ms cubic-bezier(0.25, 0.1, 0.25, 1);

  /* Border radius */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;

  /* Container */
  --container-max: 1200px;
  --container-padding: var(--space-md);

  /* Shadows */
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.04);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 8px 30px rgba(0, 0, 0, 0.08);
}


/* ============================================
   2. RESET & BASE
   ============================================ */

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

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-body);
  font-size: var(--text-base);
  line-height: var(--leading-normal);
  color: var(--color-text-primary);
  background-color: var(--color-bg-primary);
  overflow-x: hidden;
}

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

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

ul {
  list-style: none;
}

[id] {
  scroll-margin-top: 80px;
}


/* ============================================
   3. LAYOUT
   ============================================ */

.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--container-padding);
}

.section {
  padding: var(--section-padding);
}

.section--alt {
  background-color: var(--color-bg-secondary);
}


/* ============================================
   4. TYPOGRAPHY
   ============================================ */

.section__label {
  font-size: var(--text-xs);
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: var(--tracking-wider);
  color: var(--color-accent);
  margin-bottom: var(--space-sm);
}

.section__title {
  font-family: var(--font-heading);
  font-size: var(--text-3xl);
  font-weight: 700;
  line-height: var(--leading-tight);
  letter-spacing: var(--tracking-tight);
  color: var(--color-text-primary);
}

.section__header {
  margin-bottom: var(--space-2xl);
}


/* ============================================
   5. BUTTONS
   ============================================ */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-sm) var(--space-lg);
  font-family: var(--font-body);
  font-size: var(--text-sm);
  font-weight: 500;
  text-decoration: none;
  border: none;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition-base);
}

.btn--primary {
  background-color: var(--color-accent);
  color: #fff;
}

.btn--primary:hover {
  background-color: var(--color-accent-hover);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

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

.btn--secondary:hover {
  border-color: var(--color-text-primary);
  transform: translateY(-2px);
}

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


/* ============================================
   6. HEADER / NAVIGATION
   ============================================ */

.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  padding: var(--space-sm) 0;
  transition: all var(--transition-base);
}

.site-header--scrolled {
  background-color: rgba(250, 250, 248, 0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border);
}

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

.logo {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-heading);
  font-size: var(--text-lg);
  font-weight: 700;
  letter-spacing: var(--tracking-tight);
  color: var(--color-text-primary);
  transition: opacity var(--transition-fast);
}

.logo:hover {
  opacity: 0.7;
}

.logo__img {
  height: 52px;
  width: auto;
}

.logo__text {
  line-height: 1;
}

.logo--footer {
  color: var(--color-text-on-dark);
}

.logo__img--footer {
  height: 52px;
  filter: brightness(0) invert(1);
}

.nav-list {
  display: flex;
  align-items: center;
  gap: var(--space-lg);
}

.nav-link {
  font-size: var(--text-sm);
  font-weight: 400;
  color: var(--color-text-secondary);
  transition: color var(--transition-fast);
  position: relative;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 1px;
  background-color: var(--color-text-primary);
  transition: width var(--transition-base);
}

.nav-link:hover {
  color: var(--color-text-primary);
}

.nav-link:hover::after {
  width: 100%;
}

.nav-link--cta {
  background-color: var(--color-accent);
  color: #fff;
  padding: 0.5rem 1.25rem;
  border-radius: var(--radius-md);
  font-weight: 500;
}

.nav-link--cta::after {
  display: none;
}

.nav-link--cta:hover {
  color: #fff;
  background-color: var(--color-accent-hover);
}

/* Hamburger */
.menu-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--space-xs);
  z-index: 1001;
}

.menu-toggle__bar {
  display: block;
  width: 24px;
  height: 2px;
  background-color: var(--color-text-primary);
  transition: all var(--transition-fast);
  transform-origin: center;
}

.menu-toggle--active .menu-toggle__bar:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.menu-toggle--active .menu-toggle__bar:nth-child(2) {
  opacity: 0;
}

.menu-toggle--active .menu-toggle__bar:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}


/* ============================================
   7. HERO
   ============================================ */

.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: var(--space-4xl) 0 var(--space-3xl);
  position: relative;
  overflow: hidden;
  background: url('Images/banner.png') center center / cover no-repeat;
}

.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.55);
  z-index: 0;
}

.hero__content {
  position: relative;
  z-index: 1;
  max-width: 800px;
}

.hero__label {
  font-size: var(--text-xs);
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: var(--tracking-wider);
  color: rgba(255, 255, 255, 0.7);
  margin-bottom: var(--space-md);
}

.hero__title {
  font-family: var(--font-heading);
  font-size: var(--text-4xl);
  font-weight: 700;
  line-height: var(--leading-tight);
  letter-spacing: var(--tracking-tight);
  color: #fff;
  margin-bottom: var(--space-md);
}

.hero__subtitle {
  font-size: var(--text-lg);
  color: rgba(255, 255, 255, 0.75);
  line-height: var(--leading-normal);
  max-width: 600px;
  margin: 0 auto var(--space-xl);
}

.hero__actions {
  display: flex;
  gap: var(--space-sm);
  justify-content: center;
  flex-wrap: wrap;
}

.hero__actions .btn--secondary {
  color: #fff;
  border-color: rgba(255, 255, 255, 0.3);
}

.hero__actions .btn--secondary:hover {
  border-color: rgba(255, 255, 255, 0.7);
}

.hero__decoration {
  display: none;
  border-radius: 50%;
  pointer-events: none;
}


/* ============================================
   8. SERVICES
   ============================================ */

.services__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-md);
}

.service-card {
  padding: var(--space-lg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  background-color: var(--color-bg-primary);
  transition: all var(--transition-base);
}

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

.service-card__icon {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: var(--color-accent-light);
  border-radius: var(--radius-md);
  color: var(--color-accent);
  margin-bottom: var(--space-md);
}

.service-card__title {
  font-family: var(--font-heading);
  font-size: var(--text-lg);
  font-weight: 700;
  margin-bottom: var(--space-xs);
}

.service-card__description {
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  line-height: var(--leading-normal);
}


/* Featured service card (Salesforce) */
.service-card--featured {
  border-color: var(--color-accent);
  background: linear-gradient(135deg, var(--color-accent-light), var(--color-bg-primary));
}

.service-card--featured:hover {
  border-color: var(--color-accent);
}


/* ============================================
   8b. SALESFORCE
   ============================================ */

.salesforce__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-2xl);
}

.salesforce__text {
  font-size: var(--text-base);
  color: var(--color-text-secondary);
  line-height: var(--leading-normal);
  margin-top: var(--space-md);
  margin-bottom: var(--space-lg);
}

.salesforce__capabilities {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

.capability-card {
  display: flex;
  gap: var(--space-md);
  padding: var(--space-md);
  border-radius: var(--radius-lg);
  background-color: var(--color-bg-primary);
  border: 1px solid var(--color-border);
  transition: all var(--transition-base);
}

.capability-card:hover {
  border-color: var(--color-accent);
  box-shadow: var(--shadow-sm);
}

.capability-card__icon {
  flex-shrink: 0;
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: var(--color-accent-light);
  border-radius: var(--radius-md);
  color: var(--color-accent);
}

.capability-card__title {
  font-family: var(--font-heading);
  font-size: var(--text-sm);
  font-weight: 700;
  margin-bottom: 0.25rem;
}

.capability-card__text {
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  line-height: var(--leading-normal);
}


/* ============================================
   9. ABOUT
   ============================================ */

.about__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-2xl);
}

.about__text {
  font-size: var(--text-base);
  color: var(--color-text-secondary);
  line-height: var(--leading-normal);
  margin-top: var(--space-md);
}

.about__values {
  display: flex;
  flex-direction: column;
  gap: var(--space-lg);
}

.value-item {
  padding-top: var(--space-lg);
  border-top: 2px solid var(--color-accent);
}

.value-item__title {
  font-family: var(--font-heading);
  font-size: var(--text-base);
  font-weight: 700;
  margin-bottom: var(--space-xs);
}

.value-item__text {
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  line-height: var(--leading-normal);
}


/* ============================================
   10. WORK / PORTFOLIO
   ============================================ */

.work__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-md);
}

.project-card {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  cursor: pointer;
}

.project-card__image {
  width: 100%;
  aspect-ratio: 16 / 10;
  transition: transform var(--transition-slow);
}

.project-card:hover .project-card__image {
  transform: scale(1.05);
}

.project-card__overlay {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: var(--space-lg);
  background: linear-gradient(to top, rgba(0, 0, 0, 0.7) 0%, transparent 100%);
  color: #fff;
  transform: translateY(8px);
  opacity: 0;
  transition: all var(--transition-base);
}

.project-card:hover .project-card__overlay {
  transform: translateY(0);
  opacity: 1;
}

.project-card__category {
  font-size: var(--text-xs);
  text-transform: uppercase;
  letter-spacing: var(--tracking-wider);
  opacity: 0.8;
  margin-bottom: var(--space-xs);
}

.project-card__title {
  font-family: var(--font-heading);
  font-size: var(--text-xl);
  font-weight: 700;
}


/* ============================================
   11. PROCESS
   ============================================ */

.process__steps {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-xl);
  position: relative;
}

.process-step {
  position: relative;
}

.process-step__number {
  font-family: var(--font-heading);
  font-size: var(--text-3xl);
  font-weight: 700;
  color: var(--color-accent);
  opacity: 0.15;
  line-height: 1;
  margin-bottom: var(--space-sm);
}

.process-step__title {
  font-family: var(--font-heading);
  font-size: var(--text-xl);
  font-weight: 700;
  margin-bottom: var(--space-xs);
}

.process-step__text {
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  line-height: var(--leading-normal);
}


/* ============================================
   12. CONTACT
   ============================================ */

.contact__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-2xl);
}

.contact__text {
  font-size: var(--text-base);
  color: var(--color-text-secondary);
  line-height: var(--leading-normal);
  margin-top: var(--space-md);
}

.contact__email {
  display: inline-block;
  font-size: var(--text-lg);
  font-weight: 500;
  color: var(--color-accent);
  margin-top: var(--space-md);
  transition: opacity var(--transition-fast);
}

.contact__email:hover {
  opacity: 0.7;
}

.contact__form {
  display: flex;
  flex-direction: column;
  gap: var(--space-lg);
}

.form-group {
  position: relative;
}

.form-label {
  display: block;
  font-size: var(--text-xs);
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: var(--tracking-wide);
  color: var(--color-text-secondary);
  margin-bottom: var(--space-xs);
}

.form-input {
  width: 100%;
  padding: var(--space-sm) 0;
  font-family: var(--font-body);
  font-size: var(--text-base);
  color: var(--color-text-primary);
  background: transparent;
  border: none;
  border-bottom: 1px solid var(--color-border-strong);
  outline: none;
  transition: border-color var(--transition-fast);
  resize: none;
}

.form-input:focus {
  border-bottom-color: var(--color-accent);
}

.form-input::placeholder {
  color: var(--color-text-muted);
}

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

.form-input--error {
  border-bottom-color: #E53E3E;
}

.form-error {
  font-size: var(--text-xs);
  color: #E53E3E;
  margin-top: var(--space-xs);
}

.btn--success {
  background-color: #38A169;
}

.btn--success:hover {
  background-color: #2F855A;
}


/* ============================================
   13. FOOTER
   ============================================ */

.footer {
  background-color: var(--color-bg-dark);
  color: var(--color-text-on-dark);
  padding: var(--space-3xl) 0 var(--space-lg);
}

.footer__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-xl);
  padding-bottom: var(--space-xl);
}

.footer__tagline {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  margin-top: var(--space-sm);
}

.footer__heading {
  font-size: var(--text-xs);
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: var(--tracking-wider);
  color: var(--color-text-muted);
  margin-bottom: var(--space-md);
}

.footer__list {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.footer__list a {
  font-size: var(--text-sm);
  color: var(--color-text-on-dark);
  opacity: 0.7;
  transition: opacity var(--transition-fast);
}

.footer__list a:hover {
  opacity: 1;
}

.footer__social-links {
  display: flex;
  gap: var(--space-sm);
}

.social-link {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  border: 1px solid rgba(255, 255, 255, 0.15);
  color: var(--color-text-on-dark);
  opacity: 0.7;
  transition: all var(--transition-fast);
}

.social-link:hover {
  opacity: 1;
  border-color: rgba(255, 255, 255, 0.4);
  background-color: rgba(255, 255, 255, 0.05);
}

.footer__bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding-top: var(--space-lg);
  font-size: var(--text-xs);
  color: var(--color-text-muted);
}


/* ============================================
   14. ANIMATIONS
   ============================================ */

[data-animate] {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity var(--transition-slow), transform var(--transition-slow);
}

[data-animate].is-visible {
  opacity: 1;
  transform: translateY(0);
}


/* ============================================
   15. RESPONSIVE
   ============================================ */

/* Mobile nav */
@media (max-width: 767px) {
  .menu-toggle {
    display: flex;
  }

  .main-nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: var(--color-bg-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: opacity var(--transition-base), visibility var(--transition-base);
    z-index: 999;
  }

  .main-nav--open {
    opacity: 1;
    visibility: visible;
  }

  .main-nav .nav-list {
    flex-direction: column;
    align-items: center;
    gap: var(--space-xl);
  }

  .main-nav .nav-link {
    font-size: var(--text-2xl);
    color: var(--color-text-primary);
    font-weight: 500;
  }

  .main-nav .nav-link--cta {
    font-size: var(--text-lg);
  }
}

/* Tablet */
@media (min-width: 768px) {
  :root {
    --container-padding: var(--space-lg);
    --section-padding: var(--space-4xl) 0;
  }

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

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

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

  .contact__grid {
    grid-template-columns: 1fr 1fr;
    align-items: start;
  }

  .footer__grid {
    grid-template-columns: 2fr 1fr 1fr;
  }
}

/* Desktop */
@media (min-width: 1024px) {
  :root {
    --container-padding: var(--space-xl);
  }

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

  .salesforce__grid {
    grid-template-columns: 1fr 1fr;
    gap: var(--space-3xl);
    align-items: start;
  }

  .about__grid {
    grid-template-columns: 1fr 1fr;
    gap: var(--space-3xl);
    align-items: start;
  }

  .project-card--large {
    grid-column: span 2;
  }

  .project-card--large .project-card__image {
    aspect-ratio: 2 / 1;
  }

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

  /* Process connecting line */
  .process__steps::before {
    content: '';
    position: absolute;
    top: 28px;
    left: 0;
    right: 0;
    height: 1px;
    background-color: var(--color-border-strong);
  }

  .process-step {
    position: relative;
    padding-top: var(--space-xl);
  }

  .process-step::before {
    content: '';
    position: absolute;
    top: 24px;
    left: 0;
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background-color: var(--color-accent);
  }
}

/* Large desktop */
@media (min-width: 1280px) {
  .hero__content {
    max-width: 900px;
  }
}

/* Prefers reduced motion */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }

  html {
    scroll-behavior: auto;
  }

  [data-animate] {
    opacity: 1;
    transform: none;
    transition: none;
  }
}