/* ===== ROOT VARIABLES ===== */
:root {
  --color-bg-dark: #0A0A0A;
  --color-primary-gold: #D4AF37;
  --color-secondary-green: #4CAF50;
  --color-text-primary: #EAEAEA;
  --color-text-secondary: #A0A0A0;
  
  --font-heading: 'Montserrat', sans-serif;
  --font-body: 'Inter', sans-serif;
  
  --transition-base: all 0.3s ease;
  --border-radius: 8px;
  --shadow-card: 0 4px 20px rgba(0, 0, 0, 0.3);
  --shadow-hover: 0 8px 30px rgba(212, 175, 55, 0.2);
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-body);
  background-color: var(--color-bg-dark);
  color: var(--color-text-primary);
  line-height: 1.6;
  min-height: 100vh;
}

/* ===== TYPOGRAPHY ===== */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 1rem;
}

h1 {
  font-size: clamp(2.5rem, 5vw, 4rem);
  line-height: 1.2;
}

h2 {
  font-size: clamp(2rem, 4vw, 3rem);
  line-height: 1.3;
}

h3 {
  font-size: clamp(1.5rem, 3vw, 2rem);
  line-height: 1.4;
}

h4 {
  font-size: clamp(1.25rem, 2.5vw, 1.5rem);
  line-height: 1.4;
}

p {
  margin-bottom: 1rem;
  color: var(--color-text-primary);
  font-size: 1.1rem;
}

a {
  color: var(--color-primary-gold);
  text-decoration: none;
  transition: var(--transition-base);
}

a:hover {
  text-decoration: underline;
}

/* ===== LAYOUT UTILITIES ===== */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 2rem;
}

.grid {
  display: grid;
  gap: 2rem;
}

.grid-2 {
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
}

.grid-4 {
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
}

.flex {
  display: flex;
}

.flex-center {
  display: flex;
  align-items: center;
  justify-content: center;
}

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

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

.section-padding {
  padding: 5rem 0;
}

/* ===== HEADER & NAVIGATION ===== */
header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background-color: rgba(10, 10, 10, 0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(212, 175, 55, 0.2);
}

nav {
  padding: 1rem 0;
}

.logo {
  font-family: var(--font-heading);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-primary-gold);
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

.logo-subtitle {
  font-size: 0.8rem;
  font-weight: 400;
  color: var(--color-text-secondary);
  display: block;
  margin-top: -0.25rem;
}

.nav-links {
  display: flex;
  list-style: none;
  gap: 2rem;
}

.nav-links a {
  color: var(--color-text-primary);
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  transition: var(--transition-base);
  padding: 0.5rem 0;
  position: relative;
}

.nav-links a:hover {
  color: var(--color-primary-gold);
  text-decoration: none;
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background-color: var(--color-primary-gold);
  transition: width 0.3s ease;
}

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

/* Mobile Navigation */
@media (max-width: 768px) {
  .nav-links {
    gap: 1rem;
    flex-wrap: wrap;
  }
  
  .nav-links a {
    font-size: 0.9rem;
  }
}

/* ===== BUTTONS ===== */
.btn {
  display: inline-block;
  padding: 1rem 2rem;
  border: none;
  border-radius: var(--border-radius);
  font-family: var(--font-heading);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  text-decoration: none;
  cursor: pointer;
  transition: var(--transition-base);
  font-size: 0.9rem;
}

.btn-primary {
  background: linear-gradient(135deg, var(--color-primary-gold), #F4D03F);
  color: var(--color-bg-dark);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-hover);
  text-decoration: none;
}

.btn-outline {
  background: transparent;
  border: 2px solid var(--color-primary-gold);
  color: var(--color-primary-gold);
}

.btn-outline:hover {
  background-color: var(--color-primary-gold);
  color: var(--color-bg-dark);
  text-decoration: none;
}

.btn-green {
  background: linear-gradient(135deg, var(--color-secondary-green), #66BB6A);
  color: var(--color-bg-dark);
}

.btn-green:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(76, 175, 80, 0.3);
  text-decoration: none;
}

/* ===== HERO SECTION ===== */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  background: linear-gradient(rgba(10, 10, 10, 0.7), rgba(10, 10, 10, 0.7)), 
              url('../assets/images/hero-robohome.png') center/cover;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: 
    radial-gradient(circle at 20% 80%, rgba(212, 175, 55, 0.1) 0%, transparent 50%),
    radial-gradient(circle at 80% 20%, rgba(76, 175, 80, 0.1) 0%, transparent 50%);
  pointer-events: none;
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: 1000px;
  margin: 0 auto;
}

.hero-layout {
  display: flex;
  align-items: center;
  gap: 3rem;
  min-height: 400px;
}

.hero-logo-column {
  flex: 0 0 auto;
  display: flex;
  justify-content: center;
  align-items: center;
}

.hero-text-column {
  flex: 1;
  text-align: left;
}

.hero-logo {
  max-width: 350px;
  width: 100%;
  height: auto;
  opacity: 0.95;
  transition: opacity 0.3s ease;
}

.hero-logo:hover {
  opacity: 1;
}

.hero h1 {
  font-size: clamp(2rem, 4vw, 3.2rem);
  margin-bottom: 1.5rem;
  background: linear-gradient(135deg, var(--color-primary-gold), var(--color-secondary-green));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero p {
  font-size: 1.25rem;
  color: var(--color-text-secondary);
  margin-bottom: 2rem;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

/* ===== CARDS ===== */
.card {
  background: rgba(20, 20, 20, 0.8);
  border: 1px solid rgba(212, 175, 55, 0.2);
  border-radius: var(--border-radius);
  padding: 2rem;
  transition: var(--transition-base);
  backdrop-filter: blur(10px);
}

.card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-hover);
  border-color: var(--color-primary-gold);
}

.card h3 {
  color: var(--color-primary-gold);
  margin-bottom: 0.25rem;
  word-break: break-word;
  hyphens: auto;
  overflow-wrap: break-word;
}

.card-subtitle {
  font-size: 0.9rem;
  color: var(--color-secondary-green);
  font-weight: 500;
  margin-bottom: 0.75rem;
  font-family: 'Courier New', monospace;
}

.card-label {
  font-size: 0.9rem;
  color: var(--color-secondary-green);
  text-transform: uppercase;
  font-weight: 600;
  letter-spacing: 0.05em;
  margin-bottom: 1rem;
}

.card p {
  color: var(--color-text-secondary);
  margin-bottom: 1.5rem;
  flex-grow: 1;
}

.card-content {
  display: flex;
  flex-direction: column;
  height: 100%;
}

/* ===== SECTIONS ===== */
section {
  padding: 4rem 0;
}

.section-title {
  text-align: center;
  margin-bottom: 3rem;
  color: var(--color-primary-gold);
}

.section-intro {
  text-align: center;
  max-width: 800px;
  margin: 0 auto 3rem;
  color: var(--color-text-secondary);
  font-size: 1.2rem;
}

/* ===== QUOTE BLOCK ===== */
.quote-block {
  background: linear-gradient(135deg, rgba(212, 175, 55, 0.1), rgba(76, 175, 80, 0.1));
  border-left: 4px solid var(--color-primary-gold);
  padding: 2rem;
  margin: 3rem 0;
  border-radius: var(--border-radius);
  font-style: italic;
  font-size: 1.3rem;
  text-align: center;
  color: var(--color-text-primary);
}

/* ===== ABOUT PAGE STYLES ===== */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: 3rem;
  align-items: center;
  margin: 3rem 0;
}

.portrait {
  width: 100%;
  max-width: 300px;
  border-radius: var(--border-radius);
  border: 2px solid var(--color-primary-gold);
}

@media (max-width: 768px) {
  .about-grid {
    grid-template-columns: 1fr;
    text-align: center;
  }
}

/* ===== CONTACT FORM ===== */
.contact-form {
  max-width: 600px;
  margin: 2rem auto;
  background: rgba(20, 20, 20, 0.6);
  padding: 2rem;
  border-radius: var(--border-radius);
  border: 1px solid rgba(212, 175, 55, 0.2);
}

.form-group {
  margin-bottom: 1.5rem;
}

.form-group label {
  display: block;
  margin-bottom: 0.5rem;
  color: var(--color-text-primary);
  font-weight: 500;
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: 1rem;
  border: 1px solid rgba(212, 175, 55, 0.3);
  border-radius: var(--border-radius);
  background-color: rgba(10, 10, 10, 0.8);
  color: var(--color-text-primary);
  font-family: var(--font-body);
  transition: var(--transition-base);
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--color-primary-gold);
  box-shadow: 0 0 0 3px rgba(212, 175, 55, 0.1);
}

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

.contact-info {
  text-align: center;
  margin: 3rem 0;
}

.contact-email {
  display: inline-block;
  font-size: 1.3rem;
  color: var(--color-primary-gold);
  padding: 1rem 2rem;
  border: 2px solid var(--color-primary-gold);
  border-radius: var(--border-radius);
  transition: var(--transition-base);
}

.contact-email:hover {
  background-color: var(--color-primary-gold);
  color: var(--color-bg-dark);
  text-decoration: none;
}

/* ===== FOOTER ===== */
footer {
  background: rgba(5, 5, 5, 0.9);
  border-top: 1px solid rgba(212, 175, 55, 0.2);
  padding: 2rem 0;
  text-align: center;
  color: var(--color-text-secondary);
}

.footer-text {
  margin-bottom: 0.5rem;
}

.footer-credit {
  font-size: 0.9rem;
  color: var(--color-text-secondary);
}

/* ===== UTILITY CLASSES ===== */
.mt-1 { margin-top: 1rem; }
.mt-2 { margin-top: 2rem; }
.mt-3 { margin-top: 3rem; }
.mb-1 { margin-bottom: 1rem; }
.mb-2 { margin-bottom: 2rem; }
.mb-3 { margin-bottom: 3rem; }

.gradient-text {
  background: linear-gradient(135deg, var(--color-primary-gold), var(--color-secondary-green));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.form-message {
  background: rgba(76, 175, 80, 0.2);
  border: 1px solid var(--color-secondary-green);
  color: var(--color-secondary-green);
  padding: 1rem;
  border-radius: var(--border-radius);
  margin-top: 1rem;
  text-align: center;
}

/* ===== RESPONSIVE DESIGN ===== */
@media (max-width: 768px) {
  .container {
    padding: 0 1rem;
  }
  
  .section-padding {
    padding: 3rem 0;
  }
  
  .hero {
    min-height: 80vh;
  }
  
  .hero-layout {
    flex-direction: column;
    gap: 2rem;
    min-height: auto;
    text-align: center;
  }
  
  .hero-text-column {
    text-align: center;
  }
  
  .hero-logo {
    max-width: 220px;
  }
  
  .hero h1 {
    font-size: 2.1rem;
  }
  
  .hero p {
    font-size: 1.1rem;
  }
  
  .nav-links {
    gap: 1rem;
  }
  
  .btn {
    padding: 0.8rem 1.5rem;
    font-size: 0.8rem;
  }
  
  .card {
    padding: 1.5rem;
  }
  
  .quote-block {
    padding: 1.5rem;
    font-size: 1.1rem;
  }
}

/* Tablet styles */
@media (max-width: 992px) {
  .hero-layout {
    gap: 2rem;
  }
  
  .hero-logo {
    max-width: 280px;
  }
  
  .hero h1 {
    font-size: 2.4rem;
  }
}

@media (max-width: 480px) {
  .nav-links {
    flex-direction: column;
    gap: 0.5rem;
  }
  
  .hero h1 {
    font-size: 2rem;
  }
  
  .hero p {
    font-size: 1rem;
  }
}