/* ==========================================================================
   Gnekio - Premium Minimalist Stylesheet
   ========================================================================== */

/* 1. Design Tokens (CSS Variables) */
:root {
  /* Colors */
  --color-bg: #ffffff;
  --color-bg-alt: #f8fafc;
  --color-navy: #0f172a;       /* Main brand color */
  --color-navy-light: #1e293b; /* Secondary brand color */
  --color-navy-tint: #f1f5f9;  /* Muted navy background */
  --color-accent: #3b82f6;     /* Accent/link color (subtle blue) */
  --color-text: #334155;       /* Muted body text */
  --color-text-dark: #0f172a;  /* Heavy headers */
  --color-border: #e2e8f0;     /* Fine borders */
  --color-error: #ef4444;      /* Error states */
  --color-success: #10b981;    /* Success states */
  
  /* Fonts */
  --font-family-body: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
  --font-family-heading: 'Outfit', sans-serif;
  
  /* Layout */
  --max-width: 1200px;
  --header-height: 80px;
  --transition-smooth: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --border-radius: 12px;
  --border-radius-sm: 6px;
  --box-shadow: 0 4px 6px -1px rgb(0 0 0 / 0.05), 0 2px 4px -2px rgb(0 0 0 / 0.05);
  --box-shadow-hover: 0 20px 25px -5px rgb(0 0 0 / 0.05), 0 8px 10px -6px rgb(0 0 0 / 0.05);
}

/* 2. 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-body);
  background-color: var(--color-bg);
  color: var(--color-text);
  line-height: 1.6;
  font-size: 1rem;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

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

p {
  margin-bottom: 1.5rem;
}

a {
  color: inherit;
  text-decoration: none;
  transition: var(--transition-smooth);
}

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

ul {
  list-style: none;
}

/* Common Section Padding & Containers */
.container {
  width: 100%;
  max-width: var(--max-width);
  margin-right: auto;
  margin-left: auto;
  padding-right: 1.5rem;
  padding-left: 1.5rem;
}

.section-padding {
  padding: 8rem 0;
}

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

/* 3. Header & Navigation */
.main-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: var(--header-height);
  z-index: 1000;
  background-color: rgba(255, 255, 255, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border);
  transition: var(--transition-smooth);
}

.header-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 1.5rem;
}

.logo {
  font-family: var(--font-family-heading);
  font-size: 1.625rem;
  font-weight: 700;
  color: var(--color-navy);
  letter-spacing: -0.5px;
}

.logo-accent {
  color: var(--color-accent);
}

.primary-navigation {
  display: flex;
  align-items: center;
}

.nav-list {
  display: flex;
  align-items: center;
  gap: 2.5rem;
}

.nav-link {
  font-size: 0.9375rem;
  font-weight: 500;
  color: var(--color-text);
  position: relative;
  padding: 0.5rem 0;
}

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

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 2px;
  background-color: var(--color-navy);
  transform: scaleX(0);
  transform-origin: right;
  transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.nav-link:hover::after {
  transform: scaleX(1);
  transform-origin: left;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.875rem 1.75rem;
  border-radius: var(--border-radius-sm);
  font-size: 0.9375rem;
  font-weight: 600;
  text-align: center;
  cursor: pointer;
  transition: var(--transition-smooth);
  border: 1px solid transparent;
}

.btn-primary {
  background-color: var(--color-navy);
  color: #ffffff;
}

.btn-primary:hover {
  background-color: var(--color-navy-light);
  transform: translateY(-2px);
}

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

.btn-secondary:hover {
  background-color: var(--color-navy-tint);
  transform: translateY(-2px);
}

.btn-block {
  width: 100%;
}

.nav-btn {
  background-color: var(--color-navy);
  color: #ffffff !important;
  padding: 0.625rem 1.25rem;
  border-radius: var(--border-radius-sm);
}

.nav-btn::after {
  display: none;
}

.nav-btn:hover {
  background-color: var(--color-navy-light);
  transform: translateY(-1px);
}

/* 4. Hero Section */
.hero-section {
  min-height: 90vh;
  display: flex;
  align-items: center;
  position: relative;
  background-color: var(--color-bg);
  padding-top: var(--header-height);
  overflow: hidden;
}

.hero-container {
  max-width: 800px;
  margin: 0 auto;
  padding: 0 1.5rem;
  text-align: center;
  z-index: 2;
}

.hero-bg-shapes .shape {
  position: absolute;
  border-radius: 50%;
  filter: blur(100px);
  z-index: 1;
  opacity: 0.4;
}

.shape-1 {
  width: 400px;
  height: 400px;
  background-color: rgba(59, 130, 246, 0.08);
  top: -100px;
  right: -50px;
}

.shape-2 {
  width: 300px;
  height: 300px;
  background-color: rgba(15, 23, 42, 0.04);
  bottom: -50px;
  left: -50px;
}

.hero-tagline {
  font-family: var(--font-family-heading);
  display: inline-block;
  font-size: 0.875rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 2px;
  color: var(--color-accent);
  margin-bottom: 1.5rem;
}

.hero-title {
  font-size: clamp(2.5rem, 6vw, 4.5rem);
  font-weight: 800;
  color: var(--color-navy);
  letter-spacing: -2px;
  line-height: 1.1;
  margin-bottom: 1.5rem;
}

.hero-subtitle {
  font-size: clamp(1.125rem, 2vw, 1.375rem);
  color: var(--color-text);
  max-width: 680px;
  margin: 0 auto 2.5rem auto;
  font-weight: 400;
}

.hero-actions {
  display: flex;
  justify-content: center;
  gap: 1.25rem;
}

/* 5. Common Sections Styles */
.section-tag {
  font-family: var(--font-family-heading);
  display: inline-block;
  font-size: 0.8125rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 2px;
  color: var(--color-accent);
  margin-bottom: 1rem;
}

.section-title {
  font-size: clamp(2rem, 4vw, 2.75rem);
  color: var(--color-navy);
  letter-spacing: -1px;
  margin-bottom: 1.5rem;
}

.section-subtitle-center {
  font-size: 1.125rem;
  color: var(--color-text);
  max-width: 600px;
  margin: 0 auto 4rem auto;
}

.section-description {
  font-size: 1.0625rem;
  color: var(--color-text);
  margin-bottom: 1.5rem;
}

.section-grid {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 5rem;
  align-items: center;
}

/* 6. About Section & Skills */
.about-section {
  background-color: var(--color-bg-alt);
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}

.skills-card-container {
  background-color: #ffffff;
  padding: 3rem;
  border-radius: var(--border-radius);
  border: 1px solid var(--color-border);
  box-shadow: var(--box-shadow);
}

.skills-title {
  font-family: var(--font-family-heading);
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--color-navy);
  margin-bottom: 1.5rem;
  border-bottom: 2px solid var(--color-navy-tint);
  padding-bottom: 0.75rem;
}

.skills-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-bottom: 2.5rem;
}

.skill-tag {
  background-color: var(--color-bg-alt);
  color: var(--color-navy-light);
  padding: 0.5rem 1rem;
  border-radius: var(--border-radius-sm);
  font-size: 0.875rem;
  font-weight: 600;
  border: 1px solid var(--color-border);
  transition: var(--transition-smooth);
}

.skill-tag:hover {
  background-color: var(--color-navy);
  color: #ffffff;
  border-color: var(--color-navy);
}

.stat-highlight {
  display: flex;
  align-items: center;
  gap: 1.5rem;
}

.stat-number {
  font-family: var(--font-family-heading);
  font-size: 3.5rem;
  font-weight: 800;
  color: var(--color-navy);
  line-height: 1;
}

.stat-label {
  font-size: 0.9375rem;
  color: var(--color-text);
  font-weight: 500;
}

/* 7. Services Section */
.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 2rem;
}

.service-card {
  background-color: #ffffff;
  padding: 2.5rem;
  border-radius: var(--border-radius);
  border: 1px solid var(--color-border);
  box-shadow: var(--box-shadow);
  transition: var(--transition-smooth);
}

.service-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--box-shadow-hover);
  border-color: rgba(59, 130, 246, 0.2);
}

.service-icon {
  width: 50px;
  height: 50px;
  background-color: var(--color-navy-tint);
  color: var(--color-navy);
  border-radius: var(--border-radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.75rem;
  transition: var(--transition-smooth);
}

.service-icon svg {
  width: 24px;
  height: 24px;
}

.service-card:hover .service-icon {
  background-color: var(--color-navy);
  color: #ffffff;
}

.service-card-title {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--color-navy);
  margin-bottom: 1rem;
}

.service-card-text {
  font-size: 0.9375rem;
  color: var(--color-text);
  margin-bottom: 0;
}

/* 8. Experience Quote Card */
.experience-accent-card {
  background-color: var(--color-navy);
  color: #ffffff;
  padding: 3.5rem;
  border-radius: var(--border-radius);
  position: relative;
  overflow: hidden;
}

.experience-accent-card::before {
  content: '"';
  position: absolute;
  top: -20px;
  left: 20px;
  font-size: 12rem;
  font-family: var(--font-family-heading);
  color: rgba(255, 255, 255, 0.05);
  line-height: 1;
}

.accent-quote {
  font-family: var(--font-family-heading);
  font-size: 1.375rem;
  font-weight: 500;
  line-height: 1.5;
  margin-bottom: 1.5rem;
  position: relative;
  z-index: 2;
}

.accent-author {
  font-size: 0.9375rem;
  font-weight: 600;
  color: rgba(255, 255, 255, 0.7);
  letter-spacing: 1px;
  text-transform: uppercase;
}

/* 9. Contact Section */
.contact-section {
  background-color: #ffffff;
}

.contact-grid {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 4rem;
  align-items: start;
}

.contact-meta {
  margin-top: 3rem;
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.meta-item {
  display: flex;
  align-items: center;
  gap: 1rem;
  font-size: 1.0625rem;
  font-weight: 500;
  color: var(--color-navy-light);
}

.meta-icon {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background-color: var(--color-navy-tint);
  color: var(--color-navy);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.meta-icon svg {
  width: 20px;
  height: 20px;
}

.meta-item a:hover {
  color: var(--color-accent);
}

/* Contact Form */
.contact-form-container {
  background-color: #ffffff;
  padding: 3rem;
  border-radius: var(--border-radius);
  border: 1px solid var(--color-border);
  box-shadow: var(--box-shadow);
  position: relative;
}

.contact-form {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.form-group label {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--color-navy);
}

.form-group .required {
  color: var(--color-error);
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: 0.875rem 1rem;
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius-sm);
  font-family: var(--font-family-body);
  font-size: 0.9375rem;
  color: var(--color-navy);
  background-color: #ffffff;
  transition: var(--transition-smooth);
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--color-navy);
  box-shadow: 0 0 0 3px rgba(15, 23, 42, 0.08);
}

/* Error States */
.form-group.has-error input,
.form-group.has-error textarea {
  border-color: var(--color-error);
}

.form-group.has-error input:focus,
.form-group.has-error textarea:focus {
  box-shadow: 0 0 0 3px rgba(239, 68, 68, 0.1);
}

.field-error {
  display: none;
  font-size: 0.8125rem;
  color: var(--color-error);
  font-weight: 500;
}

.form-group.has-error .field-error {
  display: block;
}

/* Status Notifications */
.form-status {
  padding: 1rem;
  border-radius: var(--border-radius-sm);
  font-size: 0.9375rem;
  font-weight: 500;
  margin-bottom: 1rem;
}

.error-status {
  background-color: rgba(239, 68, 68, 0.08);
  border: 1px solid rgba(239, 68, 68, 0.2);
  color: var(--color-error);
}

/* Spinner Loading State */
.spinner {
  display: inline-block;
  width: 20px;
  height: 20px;
  border: 3px solid rgba(255, 255, 255, 0.3);
  border-radius: 50%;
  border-top-color: #ffffff;
  animation: spin 0.8s ease-in-out infinite;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

/* Success Container Styling */
.form-success-container {
  text-align: center;
  padding: 3rem 1.5rem;
  animation: fadeIn 0.5s ease;
}

.success-icon {
  width: 64px;
  height: 64px;
  background-color: rgba(16, 185, 129, 0.1);
  color: var(--color-success);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 1.5rem auto;
}

.success-icon svg {
  width: 32px;
  height: 32px;
}

.form-success-container h3 {
  font-size: 1.5rem;
  color: var(--color-navy);
  margin-bottom: 1rem;
}

.form-success-container p {
  color: var(--color-text);
  max-width: 350px;
  margin: 0 auto;
}

/* 10. Footer Section */
.main-footer {
  background-color: var(--color-bg);
  border-top: 1px solid var(--color-border);
  padding: 3.5rem 0;
  text-align: center;
}

.footer-container {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.main-footer p {
  margin: 0;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--color-navy-light);
}

.footer-subtext {
  color: var(--color-text) !important;
  font-weight: 400 !important;
  font-size: 0.8125rem !important;
}

/* 11. Scroll Reveal Animations (JS Triggers) */
.fade-in {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

.fade-in-up {
  animation: fadeInUp 0.8s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

/* 12. Responsive Adjustments */

/* Mobile Hamburger Trigger Styling */
.mobile-nav-toggle {
  display: none;
  background: transparent;
  border: 0;
  padding: 0.5rem;
  cursor: pointer;
  z-index: 1100;
}

.hamburger {
  display: block;
  position: relative;
  width: 24px;
  height: 2px;
  background-color: var(--color-navy);
  transition: var(--transition-smooth);
}

.hamburger::before,
.hamburger::after {
  content: '';
  position: absolute;
  width: 24px;
  height: 2px;
  background-color: var(--color-navy);
  transition: var(--transition-smooth);
}

.hamburger::before {
  top: -8px;
  right: 0;
}

.hamburger::after {
  bottom: -8px;
  right: 0;
}

/* Active Hamburger Animation */
.mobile-nav-toggle[aria-expanded="true"] .hamburger {
  background-color: transparent;
}

.mobile-nav-toggle[aria-expanded="true"] .hamburger::before {
  transform: rotate(45deg);
  top: 0;
}

.mobile-nav-toggle[aria-expanded="true"] .hamburger::after {
  transform: rotate(-45deg);
  bottom: 0;
}

@media (max-width: 991px) {
  .section-padding {
    padding: 6rem 0;
  }
  
  .section-grid {
    grid-template-columns: 1fr;
    gap: 3.5rem;
  }
  
  .contact-grid {
    grid-template-columns: 1fr;
    gap: 3.5rem;
  }
}

@media (max-width: 768px) {
  .section-padding {
    padding: 5rem 0;
  }

  .mobile-nav-toggle {
    display: block;
  }
  
  .primary-navigation {
    position: fixed;
    top: 0;
    right: 0;
    bottom: 0;
    left: 0;
    background-color: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    z-index: 1000;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    transform: translateX(100%);
    transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1);
  }
  
  .primary-navigation.nav-open {
    transform: translateX(0);
  }
  
  .nav-list {
    flex-direction: column;
    gap: 2.5rem;
    text-align: center;
  }
  
  .nav-link {
    font-size: 1.25rem;
  }
  
  .hero-actions {
    flex-direction: column;
    gap: 1rem;
    padding: 0 1rem;
  }
  
  .skills-card-container {
    padding: 2rem;
  }
  
  .experience-accent-card {
    padding: 2.5rem;
  }
  
  .contact-form-container {
    padding: 2rem;
  }
}