/*
Theme Name: DesignFeather
Theme URI: https://designfeather.com
Author: DesignFeather Studio
Author URI: https://designfeather.com
Description: A modern, premium, minimalist one-page agency theme for DesignFeather. Grayscale palette, spacious layout, built for speed and SEO.
Version: 1.0.0
Requires at least: 6.0
Tested up to: 6.6
Requires PHP: 7.4
License: GNU General Public License v2 or later
License URI: http://www.gnu.org/licenses/gpl-2.0.html
Text Domain: designfeather
*/

/* ==========================================================================
   1. CSS VARIABLES
   ========================================================================== */
:root {
  --color-text: #111111;
  --color-text-secondary: #6B7280;
  --color-bg: #FFFFFF;
  --color-bg-alt: #F7F7F7;
  --color-border: #E5E5E5;
  --color-button-bg: #111111;
  --color-button-bg-hover: #333333;
  --color-button-text: #FFFFFF;

  --font-heading: 'Poppins', sans-serif;
  --font-body: 'Inter', sans-serif;

  --container-width: 1200px;
  --section-padding: 100px;
  --section-padding-mobile: 60px;
  --gap: 40px;
  --radius: 8px;

  --transition-fast: 0.2s ease;
}

/* ==========================================================================
   2. RESET
   ========================================================================== */
*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  padding: 0;
  font-family: var(--font-body);
  font-weight: 400;
  color: var(--color-text);
  background-color: var(--color-bg);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

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

ul {
  list-style: none;
  margin: 0;
  padding: 0;
}

button {
  font-family: inherit;
  cursor: pointer;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 600;
  color: var(--color-text);
  margin: 0 0 20px 0;
  line-height: 1.25;
}

p {
  margin: 0 0 16px 0;
  color: var(--color-text-secondary);
}

/* ==========================================================================
   3. LAYOUT / UTILITIES
   ========================================================================== */
.container {
  width: 100%;
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 24px;
}

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

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

.section-header {
  max-width: 640px;
  margin: 0 auto 60px auto;
  text-align: center;
}

.section-header h2 {
  font-size: 40px;
}

.section-header p {
  font-size: 18px;
}

.eyebrow {
  display: inline-block;
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: 13px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-text-secondary);
  margin-bottom: 16px;
}

/* ==========================================================================
   4. BUTTONS
   ========================================================================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 16px 32px;
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: 15px;
  border-radius: var(--radius);
  border: 1px solid transparent;
  transition: background-color var(--transition-fast), color var(--transition-fast), border-color var(--transition-fast);
  white-space: nowrap;
}

.btn-primary {
  background-color: var(--color-button-bg);
  color: var(--color-button-text);
}

.btn-primary:hover {
  background-color: var(--color-button-bg-hover);
  color: var(--color-button-text);
}

.btn-secondary {
  background-color: transparent;
  color: var(--color-text);
  border-color: var(--color-border);
}

.btn-secondary:hover {
  border-color: var(--color-text);
  background-color: var(--color-bg-alt);
}

.btn-small {
  padding: 12px 22px;
  font-size: 14px;
}

/* ==========================================================================
   5. HEADER
   ========================================================================== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background-color: rgba(255, 255, 255, 0.92);
  backdrop-filter: saturate(180%) blur(10px);
  border-bottom: 1px solid var(--color-border);
}

.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 84px;
}

.site-logo {
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: 22px;
  letter-spacing: -0.01em;
  color: var(--color-text);
}

.primary-nav {
  display: flex;
  align-items: center;
  gap: 44px;
}

.primary-nav ul {
  display: flex;
  gap: 40px;
}

.primary-nav a {
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: 15px;
  color: var(--color-text);
  transition: color var(--transition-fast);
}

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

.header-cta {
  display: flex;
  align-items: center;
  gap: 24px;
}

.menu-toggle {
  display: none;
  background: none;
  border: none;
  padding: 8px;
  flex-direction: column;
  gap: 5px;
}

.menu-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background-color: var(--color-text);
}

/* ==========================================================================
   6. HERO
   ========================================================================== */
.hero {
  padding: 140px 0 var(--section-padding) 0;
}

.hero .container {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: var(--gap);
  align-items: center;
}

.hero-content h1 {
  font-size: 56px;
  letter-spacing: -0.02em;
  margin-bottom: 24px;
}

.hero-content p {
  font-size: 19px;
  max-width: 480px;
  margin-bottom: 40px;
}

.hero-actions {
  display: flex;
  gap: 16px;
}

/* Abstract browser-window mockup (no external image required) */
.hero-visual {
  background-color: var(--color-bg-alt);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  overflow: hidden;
}

.mockup-browser-bar {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 14px 18px;
  border-bottom: 1px solid var(--color-border);
  background-color: var(--color-bg);
}

.mockup-browser-bar span {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background-color: var(--color-border);
}

.mockup-browser-body {
  padding: 32px;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.mockup-line {
  height: 12px;
  border-radius: 4px;
  background-color: var(--color-border);
}

.mockup-line.w-70 { width: 70%; }
.mockup-line.w-50 { width: 50%; }
.mockup-line.w-90 { width: 90%; }
.mockup-line.w-40 { width: 40%; }

.mockup-block {
  height: 140px;
  border-radius: var(--radius);
  background-color: var(--color-bg);
  border: 1px solid var(--color-border);
  margin: 8px 0;
}

.mockup-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  margin-top: 8px;
}

.mockup-grid .mockup-block {
  height: 60px;
  margin: 0;
}

/* ==========================================================================
   7. SERVICES
   ========================================================================== */
.services-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--gap);
}

.service-card {
  background-color: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 40px 28px;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.service-card:hover {
  border-color: #d0d0d0;
  box-shadow: 0 8px 24px rgba(17, 17, 17, 0.05);
}

.service-icon {
  width: 48px;
  height: 48px;
  margin-bottom: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
}

.service-icon svg {
  width: 24px;
  height: 24px;
  stroke: var(--color-text);
}

.service-card h3 {
  font-size: 19px;
  margin-bottom: 10px;
}

.service-card p {
  font-size: 15px;
  margin-bottom: 0;
}

/* ==========================================================================
   8. ABOUT
   ========================================================================== */
.about-section .container {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: var(--gap);
  align-items: center;
}

.about-visual {
  aspect-ratio: 4 / 3;
  background-color: var(--color-bg-alt);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
}

.about-visual span {
  font-family: var(--font-heading);
  font-weight: 600;
  color: var(--color-text-secondary);
  font-size: 14px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.about-content h2 {
  font-size: 36px;
}

.about-content p {
  font-size: 17px;
  max-width: 520px;
}

/* ==========================================================================
   9. WHY CHOOSE US
   ========================================================================== */
.why-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--gap);
}

.why-item {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  padding: 8px 0;
}

.why-icon {
  flex-shrink: 0;
  width: 40px;
  height: 40px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
}

.why-icon svg {
  width: 20px;
  height: 20px;
  stroke: var(--color-text);
}

.why-item h3 {
  font-size: 17px;
  margin-bottom: 6px;
}

.why-item p {
  font-size: 15px;
  margin-bottom: 0;
}

/* ==========================================================================
   10. CONTACT
   ========================================================================== */
.contact-section {
  text-align: center;
}

.contact-section h2 {
  font-size: 40px;
  margin-bottom: 16px;
}

.contact-section > .container > p {
  max-width: 520px;
  margin: 0 auto 40px auto;
  font-size: 18px;
}

.contact-details {
  display: flex;
  justify-content: center;
  gap: 40px;
  margin-top: 48px;
  flex-wrap: wrap;
}

.contact-detail {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: 15px;
  color: var(--color-text);
}

.contact-detail svg {
  width: 20px;
  height: 20px;
  stroke: var(--color-text-secondary);
}

.social-icons {
  display: flex;
  gap: 16px;
  justify-content: center;
  margin-top: 32px;
}

.social-icons a {
  width: 40px;
  height: 40px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: border-color var(--transition-fast), background-color var(--transition-fast);
}

.social-icons a:hover {
  background-color: var(--color-bg-alt);
  border-color: #d0d0d0;
}

.social-icons svg {
  width: 18px;
  height: 18px;
  stroke: var(--color-text);
}

/* ==========================================================================
   11. FOOTER
   ========================================================================== */
.site-footer {
  border-top: 1px solid var(--color-border);
  padding: 56px 0;
}

.site-footer .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 24px;
}

.footer-brand .site-logo {
  margin-bottom: 6px;
}

.footer-tagline {
  font-size: 14px;
  color: var(--color-text-secondary);
  margin: 0;
}

.footer-nav ul {
  display: flex;
  gap: 32px;
}

.footer-nav a {
  font-size: 14px;
  color: var(--color-text-secondary);
  transition: color var(--transition-fast);
}

.footer-nav a:hover {
  color: var(--color-text);
}

.footer-copyright {
  font-size: 13px;
  color: var(--color-text-secondary);
  margin: 0;
}

/* ==========================================================================
   12. RESPONSIVE
   ========================================================================== */
@media (max-width: 1024px) {
  .services-grid {
    grid-template-columns: repeat(2, 1fr);
  }

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

  .hero-content h1 {
    font-size: 46px;
  }
}

@media (max-width: 900px) {
  .primary-nav {
    display: none;
  }

  .menu-toggle {
    display: flex;
  }

  .site-header.nav-open .primary-nav {
    display: flex;
    position: absolute;
    top: 84px;
    left: 0;
    right: 0;
    background-color: var(--color-bg);
    border-bottom: 1px solid var(--color-border);
    flex-direction: column;
    align-items: flex-start;
    padding: 24px;
    gap: 24px;
  }

  .site-header.nav-open .primary-nav ul {
    flex-direction: column;
    gap: 20px;
  }

  .hero .container,
  .about-section .container {
    grid-template-columns: 1fr;
  }

  .hero-visual,
  .about-visual {
    order: -1;
  }

  .hero-content p {
    max-width: 100%;
  }
}

@media (max-width: 768px) {
  :root {
    --section-padding: var(--section-padding-mobile);
  }

  .section-header h2 {
    font-size: 30px;
  }

  .hero {
    padding-top: 120px;
  }

  .hero-content h1 {
    font-size: 34px;
  }

  .services-grid,
  .why-grid {
    grid-template-columns: 1fr;
  }

  .contact-details {
    flex-direction: column;
    gap: 16px;
    align-items: center;
  }

  .site-footer .container {
    flex-direction: column;
    text-align: center;
  }

  .footer-nav ul {
    flex-wrap: wrap;
    justify-content: center;
  }
}

@media (max-width: 480px) {
  .hero-actions {
    flex-direction: column;
    align-items: stretch;
  }

  .hero-content h1 {
    font-size: 28px;
  }
}