/* ============================================
   ISAIAH AMOS — PORTFOLIO
   Design System: brand-styles.css tokens
   Aesthetic: Refined dark/light, editorial
============================================ */

/* --- TOKENS (from brand-styles.css) --- */
:root {
  --color-primary:         #7C3AED;
  --color-primary-hover:   #6D28D9;
  --color-primary-active:  #4C1D95;
  --color-bg:              #F5F3FF;
  --color-surface:         #FFFFFF;
  --color-muted:           #EDE9FE;
  --color-text:            #1E1B4B;
  --color-text-secondary:  #5B21B6;
  --color-text-muted:      #6B7280;
  --color-text-inverse:    #FFFFFF;
  --color-border:          #DDD6FE;
  --color-success:         #16A34A;
  --color-error:           #DC2626;

  --font-heading: 'MD Sans', system-ui, sans-serif;
  --font-body:    'DM Sans', system-ui, sans-serif;
  --font-mono:    'Fira Code', monospace;

  --text-xs:   clamp(0.7rem,  0.6vw, 0.8rem);
  --text-sm:   clamp(0.8rem,  0.8vw, 0.9rem);
  --text-base: clamp(0.95rem, 1vw,   1.05rem);
  --text-lg:   clamp(1.05rem, 1.2vw, 1.2rem);
  --text-xl:   clamp(1.2rem,  1.8vw, 1.5rem);
  --text-2xl:  clamp(1.4rem,  2.2vw, 1.8rem);
  --text-3xl:  clamp(1.7rem,  2.8vw, 2.4rem);
  --text-4xl:  clamp(2rem,    3.5vw, 3rem);

  --space-xs: clamp(0.25rem, 0.5vw,  0.5rem);
  --space-sm: clamp(0.5rem,  1vw,    0.75rem);
  --space-md: clamp(1rem,    2vw,    1.5rem);
  --space-lg: clamp(1.5rem,  3vw,    2.5rem);
  --space-xl: clamp(2rem,    4vw,    3.5rem);
  --space-2xl:clamp(3rem,    6vw,    5rem);

  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --radius-full: 999px;

  --shadow-sm: 0 1px 3px rgba(0,0,0,0.06);
  --shadow-md: 0 4px 16px rgba(124,58,237,0.08);
  --shadow-lg: 0 12px 32px rgba(124,58,237,0.12);

  --transition: 200ms ease;
  --transition-slow: 400ms ease;

  --nav-height: 68px;
}

[data-theme="dark"] {
  --color-primary:        #8B5CF6;
  --color-primary-hover:  #7C3AED;
  --color-bg:             #0F0A1F;
  --color-surface:        #1A1535;
  --color-muted:          #1E1B4B;
  --color-text:           #EDE9FE;
  --color-text-secondary: #C4B5FD;
  --color-text-muted:     #9CA3AF;
  --color-border:         #2D2060;
  --shadow-md: 0 4px 16px rgba(0,0,0,0.3);
  --shadow-lg: 0 12px 32px rgba(0,0,0,0.4);
}


/* --- RESET --- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }

body {
  font-family: var(--font-body);
  font-size: var(--text-base);
  background: var(--color-bg);
  color: var(--color-text);
  line-height: 1.65;
  overflow-x: hidden;
  transition: background var(--transition-slow), color var(--transition-slow);
}

img { display: block; max-width: 100%; height: auto; }
a  { color: inherit; text-decoration: none; }
ul { list-style: none; }
button { font-family: inherit; cursor: pointer; }


/* --- UTILITIES --- */
.container {
  width: min(1100px, 92%);
  margin-inline: auto;
}

.section {
  padding-block: var(--space-2xl);
}

.section-header {
  text-align: center;
  margin-bottom: var(--space-xl);
}

.section-label {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-primary);
  background: var(--color-muted);
  padding: 4px 14px;
  border-radius: var(--radius-full);
  margin-bottom: var(--space-sm);
}

.section-header h2 {
  font-family: var(--font-heading);
  font-size: var(--text-3xl);
  font-weight: 700;
  color: var(--color-text);
  line-height: 1.15;
}


/* --- BUTTONS --- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 13px 28px;
  border-radius: var(--radius-full);
  font-size: var(--text-sm);
  font-weight: 600;
  border: 2px solid transparent;
  transition: var(--transition);
  white-space: nowrap;
}

.btn-primary {
  background: var(--color-primary);
  color: var(--color-text-inverse);
  border-color: var(--color-primary);
}

.btn-primary:hover,
.btn-primary:focus-visible {
  background: var(--color-primary-hover);
  border-color: var(--color-primary-hover);
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

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

.btn-outline:hover,
.btn-outline:focus-visible {
  background: var(--color-primary);
  color: var(--color-text-inverse);
  transform: translateY(-2px);
}

.btn-full { width: 100%; justify-content: center; }

.btn:focus-visible { outline: 3px solid var(--color-primary); outline-offset: 3px; }

.btn:disabled {
  opacity: 0.6;
  cursor: not-allowed;
  transform: none;
}


/* --- NAVIGATION --- */
#header {
  position: fixed;
  top: 0; left: 0;
  width: 100%;
  height: var(--nav-height);
  z-index: 900;
  background: color-mix(in srgb, var(--color-surface) 92%, transparent);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--color-border);
  transition: box-shadow var(--transition);
}

#header.scrolled { box-shadow: var(--shadow-md); }

.nav-container {
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: min(1100px, 92%);
  margin-inline: auto;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-heading);
  font-size: var(--text-xl)
  font-weight: 700;
  color: var(--color-text);
}

.logo img { width: 56px; height: 56px; border-radius: 50%; object-fit: cover; }

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

.nav-link {
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-text);
  position: relative;
  transition: color var(--transition);
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: -4px; left: 0;
  width: 0; height: 2px;
  background: var(--color-primary);
  border-radius: 1px;
  transition: width var(--transition);
}

.nav-link:hover,
.nav-link.active { color: var(--color-primary); }
.nav-link:hover::after,
.nav-link.active::after { width: 100%; }

.cta-nav {
  background: var(--color-primary);
  color: var(--color-text-inverse) !important;
  padding: 9px 22px;
  border-radius: var(--radius-full);
  font-weight: 600;
}

.cta-nav::after { display: none; }
.cta-nav:hover { background: var(--color-primary-hover); color: var(--color-text-inverse) !important; }

/* Hamburger */
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  padding: 4px;
}

.hamburger span {
  display: block;
  width: 24px; height: 2px;
  background: var(--color-text);
  border-radius: 1px;
  transition: var(--transition);
}

.hamburger[aria-expanded="true"] span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
.hamburger[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.hamburger[aria-expanded="true"] span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }

/* ========================
   HERO (RESTYLED)
======================== */

.hero {
  min-height: 80vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding-top: var(--nav-height);
  position: relative;
  overflow: hidden;

  /* Background image */
  background: url('../img/amos-isaiah-tizhe-profile.png') center / cover no-repeat;
}

/* 🔥 Clean overlay for readability */
.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(
    to bottom,
    rgba(7, 7, 10, 0.55),
    rgba(7, 7, 10, 0.45),
    rgba(7, 7, 10, 0.5)
  );
  z-index: 0;
}

/* ========================
   HERO CONTENT WRAPPER
======================== */

.hero-inner {
  position: relative;
  z-index: 1;

  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
}

/* ========================
   BADGE
======================== */

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;

  font-size: var(--text-xs);
  font-family: var(--font-mono);

  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255,255,255,0.2);

  color: #22c55e;

  padding: 6px 16px;
  border-radius: var(--radius-full);

  letter-spacing: 0.04em;
}

.badge-dot {
  width: 8px;
  height: 8px;
  background: #22c55e;
  border-radius: 50%;
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.5; transform: scale(0.85); }
}

/* ========================
   AVATAR
======================== */

.hero-avatar {
  position: relative;
  width: 140px;
  height: 140px;
  margin-top: var(--space-sm);
  margin-bottom: var(--space-lg);
}

.hero-avatar img {
  width: 100%;
  height: 100%;
  border-radius: 50%;
  object-fit: cover;

  border: 3px solid var(--color-primary);
  z-index: 1;
  position: relative;
}

.avatar-ring {
  position: absolute;
  inset: -6px;
  border-radius: 50%;
  border: 2px dashed var(--color-primary);
  opacity: 0.4;
  animation: spin 12s linear infinite;
}

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

/* ========================
   TEXT CONTENT
======================== */

.hero-content {
  max-width: 600px;
}

/* Heading */
.hero h1 {
  font-family: var(--font-heading);
  font-size: clamp(2rem, 5vw, 3.5rem);
  font-weight: 800;
  line-height: 1.2;

  color: #ffffff;

  display: inline-flex;
  align-items: center;
  flex-wrap: wrap;
  justify-content: center;
  gap: 10px;

  margin-bottom: var(--space-sm);

  text-shadow: 0 4px 20px rgba(0,0,0,0.6);
}

.verified {
  flex-shrink: 0;
}

/* Role */
.hero-role {
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  color: #a5b4fc;
  letter-spacing: 0.06em;
  margin-bottom: var(--space-xs);
}

/* Location */
.hero-location {
  font-size: var(--text-sm);
  color: rgba(255, 255, 255, 0.7);
  margin-bottom: var(--space-md);
}

.hero-location i {
  margin-right: 4px;
}

/* Tagline */
.hero-tagline {
  font-size: var(--text-lg);
  color: rgba(255, 255, 255, 0.9);
  line-height: 1.6;
  margin-bottom: var(--space-lg);
}

/* ========================
   CTA BUTTONS
======================== */

.hero-cta {
  display: flex;
  gap: var(--space-sm);
  justify-content: center;
  align-items: center;
  flex-wrap: wrap;
  margin-bottom: bar(--space-md);
}

/* Optional: improve button visibility on dark bg */
.hero .btn-primary {
  box-shadow: 0 8px 20px rgba(0,0,0,0.4);
}

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

.hero .btn-outline:hover {
  background: rgba(255,255,255,0.1);
}

/* --- ABOUT --- */
.about { background: var(--color-surface); }

.about-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: var(--space-md);
}

.about-card {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
  align-items: flex-start;
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-sm) var(--space-md);
  transition: box-shadow var(--transition), transform var(--transition);
}

.about-card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-4px);
}

.about-icon {
  width: 44px; height: 44px;
  background: var(--color-muted);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-primary);
  font-size: 1.1rem;
  flex-shrink: 0;
}

.about-card h3 {
  font-family: var(--font-heading);
  font-size: var(--text-base);
  font-weight: 700;
  margin-bottom: 6px;
  color: var(--color-text);
}

.about-card p {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: 1.6;
}


/* --- SERVICES --- */
.services { background: var(--color-bg); }

.service-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: var(--space-md);
}

.service-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-md);
  transition: box-shadow var(--transition), transform var(--transition), border-color var(--transition);
}

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

.service-card i {
  font-size: 1.6rem;
  color: var(--color-primary);
  margin-bottom: var(--space-sm);
  display: block;
}

.service-card h3 {
  font-family: var(--font-heading);
  font-size: var(--text-base);
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: var(--space-xs);
}

.service-card p {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: 1.6;
}


/* --- PROJECTS --- */
.projects { background: var(--color-surface); }

.project-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--space-md);
}

/* Loading state */
.project-loading {
  grid-column: 1 / -1;
  text-align: center;
  padding: var(--space-xl);
  color: var(--color-text-muted);
  font-size: var(--text-lg);
}

.project-loading i { font-size: 2rem; color: var(--color-primary); margin-bottom: var(--space-sm); }

/* Project card */
.project-card {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: box-shadow var(--transition), transform var(--transition);
}

.project-card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-5px);
}

.project-img-wrap {
  position: relative;
  overflow: hidden;
  aspect-ratio: 16/9;
}

.project-img-wrap img {
  width: 100%; height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}

.project-card:hover .project-img-wrap img { transform: scale(1.06); }

.project-tag {
  position: absolute;
  top: 12px; left: 12px;
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  background: var(--color-primary);
  color: #fff;
  padding: 3px 10px;
  border-radius: var(--radius-full);
}

.project-body {
  padding: var(--space-md);
}

.project-body h3 {
  font-family: var(--font-heading);
  font-size: var(--text-base);
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 6px;
}

.project-body p {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: 1.6;
  margin-bottom: var(--space-md);
}

.project-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-primary);
  transition: gap var(--transition);
}

.project-link:hover { gap: 10px; }


/* --- CONTACT --- */
.contact { background: var(--color-bg); }

.contact-inner {
  display: grid;
  grid-template-columns: 1fr 1.4fr;
  gap: var(--space-xl);
  align-items: start;
}

.contact-tagline {
  font-size: var(--text-base);
  color: var(--color-text-muted);
  line-height: 1.7;
  margin-bottom: var(--space-lg);
}

.contact-details {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
  margin-bottom: var(--space-lg);
}

.contact-details li {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: var(--text-sm);
  color: var(--color-text);
}

.contact-details i {
  color: var(--color-primary);
  width: 18px;
  text-align: center;
}

.contact-details a:hover { color: var(--color-primary); text-decoration: underline; }

.socials {
  display: flex;
  gap: var(--space-sm);
  flex-wrap: wrap;
}

.socials a {
  width: 40px; height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  border: 1px solid var(--color-border);
  color: var(--color-text);
  font-size: 0.95rem;
  transition: var(--transition);
}

.socials a:hover {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: #fff;
  transform: translateY(-3px);
}

/* Contact Form */
.contact-form {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-lg) var(--space-xl);
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.form-group label {
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-text);
}

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

.form-group input,
.form-group textarea {
  width: 100%;
  padding: 11px 14px;
  font-family: var(--font-body);
  font-size: var(--text-sm);
  color: var(--color-text);
  background: var(--color-bg);
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-sm);
  transition: border-color var(--transition), box-shadow var(--transition);
  outline: none;
}

.form-group input:focus,
.form-group textarea:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--color-primary) 15%, transparent);
}

.form-group input.error,
.form-group textarea.error { border-color: var(--color-error); }

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

.field-error {
  font-size: var(--text-xs);
  color: var(--color-error);
  min-height: 16px;
}

/* Honeypot — must be invisible to real users */
.form-honeypot {
  position: absolute;
  left: -9999px;
  opacity: 0;
  pointer-events: none;
}

.form-feedback {
  padding: 12px;
  border-radius: var(--radius-sm);
  font-size: var(--text-sm);
  text-align: center;
  display: none;
}

.form-feedback.success {
  display: block;
  background: color-mix(in srgb, var(--color-success) 10%, transparent);
  color: var(--color-success);
  border: 1px solid var(--color-success);
}

.form-feedback.error {
  display: block;
  background: color-mix(in srgb, var(--color-error) 10%, transparent);
  color: var(--color-error);
  border: 1px solid var(--color-error);
}


/* --- FOOTER --- */
.footer {
  background: var(--color-surface);
  border-top: 1px solid var(--color-border);
  padding: var(--space-md) 0;
  margin: 0;
}

.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-md);
  flex-wrap: wrap;
}

.footer p {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
}

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


/* --- REVEAL ANIMATION --- */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.5s ease, transform 0.5s ease;
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}


/* --- RESPONSIVE --- */
@media (max-width: 768px) {
  .hamburger { display: flex; }

  .nav-menu {
    position: fixed;
    top: var(--nav-height); right: -100%;
    flex-direction: column;
    align-items: flex-start;
    background: var(--color-surface);
    width: 75%;
    max-width: 320px;
    height: calc(100vh - var(--nav-height));
    padding: var(--space-lg) var(--space-md);
    gap: var(--space-md);
    box-shadow: -4px 0 20px rgba(0,0,0,0.1);
    transition: right 0.35s ease;
    z-index: 800;
  }

  .nav-menu.open { right: 0; }

  .cta-nav { align-self: flex-start; }

  .contact-inner { grid-template-columns: 1fr; }

  .contact-form { padding: var(--space-md); }

  .hero-avatar { width: 120px; height: 120px; }
}

@media (max-width: 480px) {

  /* Layout tightening */
  .hero-inner {
    padding: var(--space-md);
    gap: var(--space-sm);
  }
  .hero {
  min-height: 100vh;
  
  )

  /* Avatar smaller */
  .hero-avatar {
    width: 100px;
    height: 100px;
  }

  .avatar-ring {
    inset: -4px;
  }

  /* Badge smaller */
  .hero-badge {
    font-size: 0.65rem;
    padding: 4px 12px;
  }

  .badge-dot {
    width: 6px;
    height: 6px;
  }

  /* Heading tighter */
  .hero h1 {
    font-size: var(--text-3xl);
    gap: 6px;
  }

  .verified {
    width: 22px;
    height: 22px;
  }

  /* Text scaling */
  .hero-role {
    font-size: 0.7rem;
  }

  .hero-location {
    font-size: 0.75rem;
  }

  .hero-tagline {
    font-size: 0.95rem;
    line-height: 1.5;
  }

  /* Content width */
  .hero-content {
    max-width: 100%;
  }

  /* Buttons stack */
  .hero-cta {
    flex-direction: column;
    align-items: center;
    gap: 10px;
  }

  .btn {
    width: 100%;
    justify-content: center;
    font-size: 0.85rem;
    padding: 10px 14px;
  }

  /* Footer (you already had this, kept it) */
  .footer-inner {
    flex-direction: column;
    text-align: center;
  }
}