/* =========================================================
   PORTFOLIO — style.css
   Alex Mercer · Backend Engineer
   Clean · Monochromatic · Premium · Light
   ========================================================= */

/* ==========================================================================
   1. CSS VARIABLES
   ========================================================================== */
:root {
  --clr-primary:       #2563eb;
  --clr-primary-dark:  #1d4ed8;
  --clr-primary-light: #60a5fa;
  --clr-primary-dim:   rgba(37, 99, 235, 0.08);
  --clr-primary-ring:  rgba(37, 99, 235, 0.18);

  --clr-black:  #0f0f0f;
  --clr-text:   #111827;
  --clr-text-2: #374151;
  --clr-text-3: #6b7280;
  --clr-text-4: #9ca3af;

  --clr-white:    #ffffff;
  --clr-bg:       #ffffff;
  --clr-bg-2:     #f8fafc;
  --clr-surface:  #ffffff;
  --clr-surface-2:#f1f5f9;

  --clr-border:   rgba(0, 0, 0, 0.08);
  --clr-border-2: rgba(0, 0, 0, 0.12);

  --clr-success:     #16a34a;
  --clr-success-dim: rgba(22, 163, 74, 0.09);
  --clr-danger:      #dc2626;
  --clr-danger-dim:  rgba(220, 38, 38, 0.08);

  --font-display: 'DM Sans', sans-serif;
  --font-mono:    'JetBrains Mono', monospace;
  --font-body:    'DM Sans', sans-serif;

  --fs-xs:   clamp(0.7rem,  1.2vw, 0.75rem);
  --fs-sm:   clamp(0.825rem,1.5vw, 0.875rem);
  --fs-base: clamp(0.9375rem,1.8vw,1rem);
  --fs-lg:   clamp(1.0625rem,2vw,  1.125rem);
  --fs-xl:   clamp(1.25rem,  2.5vw,1.375rem);
  --fs-2xl:  clamp(1.5rem,   3vw,  1.75rem);
  --fs-3xl:  clamp(1.75rem,  3.5vw,2.25rem);
  --fs-4xl:  clamp(2.25rem,  5vw,  3rem);
  --fs-5xl:  clamp(2.625rem, 5.5vw,3.625rem);

  --sp-1:  0.25rem; --sp-2:  0.5rem;  --sp-3:  0.75rem;
  --sp-4:  1rem;    --sp-5:  1.25rem; --sp-6:  1.5rem;
  --sp-8:  2rem;    --sp-10: 2.5rem;  --sp-12: 3rem;
  --sp-16: 4rem;    --sp-20: 5rem;    --sp-24: 6rem;

  --container:   1200px;
  --section-pad: clamp(4rem, 8vw, 6.5rem);

  --radius-sm:   6px;  --radius-md:   10px;
  --radius-lg:   16px; --radius-xl:   24px;
  --radius-full: 999px;

  --ease-out:    cubic-bezier(0.22, 1, 0.36, 1);
  --ease-spring: cubic-bezier(0.34, 1.4, 0.64, 1);
  --t-fast: 160ms; --t-base: 280ms; --t-slow: 480ms;

  --shadow-sm:        0 1px 3px rgba(0,0,0,0.07), 0 1px 2px rgba(0,0,0,0.04);
  --shadow-md:        0 4px 16px rgba(0,0,0,0.08), 0 1px 3px rgba(0,0,0,0.05);
  --shadow-card:      0 1px 3px rgba(0,0,0,0.06), 0 4px 12px rgba(0,0,0,0.06);
  --shadow-card-hover:0 4px 24px rgba(0,0,0,0.10), 0 2px 8px rgba(0,0,0,0.06);
}

/* ==========================================================================
   2. RESET & BASE
   ========================================================================== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html {
  font-size: 16px;
  scroll-behavior: smooth;
  scroll-padding-top: 72px;
}

::-webkit-scrollbar             { width: 5px; }
::-webkit-scrollbar-track       { background: var(--clr-bg-2); }
::-webkit-scrollbar-thumb       { background: var(--clr-border-2); border-radius: 99px; }
::-webkit-scrollbar-thumb:hover { background: var(--clr-text-4); }

::selection { background: var(--clr-primary-dim); color: var(--clr-primary); }

body {
  font-family: var(--font-body);
  font-size: var(--fs-base);
  line-height: 1.7;
  color: var(--clr-text-2);
  background-color: var(--clr-bg);
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

img { display: block; max-width: 100%; }
a   { color: inherit; text-decoration: none; }
ul  { list-style: none; }
button { cursor: pointer; border: none; background: none; font-family: inherit; }
input, textarea { font-family: inherit; }

/* ==========================================================================
   3. UTILITIES
   ========================================================================== */
.container {
  width: 100%;
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: clamp(1.25rem, 5vw, 2.5rem);
}
.section { padding-block: var(--section-pad); position: relative; }
.text-center { text-align: center; }
.text-accent { color: var(--clr-primary); }

.section-label {
  display: flex;
  align-items: center;
  gap: var(--sp-3);
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  color: var(--clr-primary);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  margin-bottom: var(--sp-5);
}
.label-line { display: block; width: 28px; height: 1px; background: var(--clr-primary); opacity: 0.5; }

.section-title {
  font-family: var(--font-display);
  font-size: var(--fs-3xl);
  font-weight: 700;
  color: var(--clr-text);
  line-height: 1.25;
  letter-spacing: -0.02em;
  margin-bottom: clamp(2rem, 4vw, 3.5rem);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--sp-2);
  font-family: var(--font-display);
  font-size: var(--fs-sm);
  font-weight: 500;
  padding: 0.6875rem 1.5rem;
  border-radius: var(--radius-md);
  border: 1.5px solid transparent;
  transition: all var(--t-base) var(--ease-out);
  white-space: nowrap;
}
.btn--primary { background: var(--clr-primary); color: #fff; border-color: var(--clr-primary); }
.btn--primary:hover { background: var(--clr-primary-dark); border-color: var(--clr-primary-dark); transform: translateY(-1px); box-shadow: 0 4px 16px rgba(37,99,235,0.28); }
.btn--primary:active { transform: translateY(0); box-shadow: none; }
.btn--ghost { background: transparent; color: var(--clr-text); border-color: var(--clr-border-2); }
.btn--ghost:hover { background: var(--clr-surface-2); border-color: var(--clr-primary); color: var(--clr-primary); transform: translateY(-1px); }
.btn--sm   { padding: 0.5rem 1.1rem; font-size: var(--fs-xs); }
.btn--full { width: 100%; justify-content: center; }

/* Tags */
.tag {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  font-weight: 500;
  letter-spacing: 0.03em;
  padding: 0.2rem 0.55rem;
  border-radius: var(--radius-sm);
  background: var(--clr-surface-2);
  color: var(--clr-text-3);
  border: 1px solid var(--clr-border);
  transition: all var(--t-fast);
}
.tag--blue  { background: var(--clr-primary-dim);  color: var(--clr-primary);  border-color: var(--clr-primary-ring); }
.tag--green { background: var(--clr-success-dim);  color: var(--clr-success);  border-color: rgba(22,163,74,0.2); }
.tag--red   { background: var(--clr-danger-dim);   color: var(--clr-danger);   border-color: rgba(220,38,38,0.15); }

/* Reveal animations */
.reveal-up, .reveal-left, .reveal-right {
  opacity: 0;
  transition: opacity 0.6s var(--ease-out), transform 0.6s var(--ease-out);
}
.reveal-up    { transform: translateY(24px); }
.reveal-left  { transform: translateX(-28px); }
.reveal-right { transform: translateX(28px); }
.reveal-up.visible, .reveal-left.visible, .reveal-right.visible { opacity: 1; transform: none; }

/* ==========================================================================
   4. NAVBAR
   ========================================================================== */
.navbar {
  position: fixed;
  inset: 0 0 auto;
  z-index: 100;
  transition: background var(--t-base), box-shadow var(--t-base), border-color var(--t-base);
  border-bottom: 1px solid transparent;
}
.navbar.scrolled {
  background: rgba(255,255,255,0.92);
  backdrop-filter: blur(16px) saturate(160%);
  -webkit-backdrop-filter: blur(16px) saturate(160%);
  border-bottom-color: var(--clr-border);
  box-shadow: var(--shadow-sm);
}
.nav-inner { display: flex; align-items: center; justify-content: space-between; height: 68px; }
.nav-logo { font-family: var(--font-mono); font-size: 1rem; font-weight: 500; color: var(--clr-text); display: flex; align-items: center; gap: 2px; transition: color var(--t-fast); }
.logo-bracket { color: var(--clr-primary); }
.logo-text    { color: var(--clr-text); }
.nav-logo:hover .logo-text { color: var(--clr-primary); }
.nav-links { display: flex; align-items: center; gap: var(--sp-1); }
.nav-link {
  font-family: var(--font-body);
  font-size: var(--fs-sm);
  font-weight: 500;
  color: var(--clr-text-3);
  padding: var(--sp-2) var(--sp-3);
  border-radius: var(--radius-sm);
  transition: color var(--t-fast), background var(--t-fast);
  position: relative;
}
.nav-link::after { content: ''; position: absolute; bottom: 2px; left: 50%; transform: translateX(-50%) scaleX(0); width: calc(100% - 1.5rem); height: 1.5px; background: var(--clr-primary); border-radius: 99px; transition: transform var(--t-base) var(--ease-out); }
.nav-link:hover { color: var(--clr-text); }
.nav-link.active { color: var(--clr-primary); }
.nav-link:hover::after, .nav-link.active::after { transform: translateX(-50%) scaleX(1); }

.hamburger { display: none; flex-direction: column; gap: 5px; padding: var(--sp-2); border-radius: var(--radius-sm); transition: background var(--t-fast); z-index: 101; }
.hamburger:hover { background: var(--clr-surface-2); }
.ham-line { display: block; width: 22px; height: 1.5px; background: var(--clr-text); border-radius: 99px; transition: all var(--t-base) var(--ease-out); transform-origin: center; }
.hamburger.open .ham-line:nth-child(1) { transform: translateY(6.5px) rotate(45deg); }
.hamburger.open .ham-line:nth-child(2) { opacity: 0; transform: scaleX(0); }
.hamburger.open .ham-line:nth-child(3) { transform: translateY(-6.5px) rotate(-45deg); }

/* ==========================================================================
   5. HERO
   ========================================================================== */
.hero {
  min-height: 100dvh;
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
  padding-top: 68px;
  background: var(--clr-bg);
}

/* Remove cyberpunk decorations */
.hero-blob, .hero-grid-overlay { display: none; }

/* Subtle static background */
.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 70% 55% at 65% 40%, rgba(37,99,235,0.045) 0%, transparent 70%),
    radial-gradient(ellipse 50% 60% at 10% 85%, rgba(37,99,235,0.03) 0%, transparent 60%);
  pointer-events: none;
}

.hero-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  align-items: center;
  gap: clamp(2.5rem, 6vw, 5rem);
  padding-block: var(--sp-24);
  position: relative;
  z-index: 1;
  width: 100%;
}

.hero-eyebrow { display: flex; align-items: center; gap: var(--sp-3); font-family: var(--font-mono); font-size: var(--fs-xs); color: var(--clr-primary); letter-spacing: 0.1em; margin-bottom: var(--sp-5); }
.eyebrow-dot { width: 6px; height: 6px; background: var(--clr-success); border-radius: 50%; box-shadow: 0 0 0 3px rgba(22,163,74,0.15); animation: pulseGreen 2.5s ease-in-out infinite; flex-shrink: 0; }
@keyframes pulseGreen { 0%,100% { box-shadow: 0 0 0 3px rgba(22,163,74,0.15); } 50% { box-shadow: 0 0 0 5px rgba(22,163,74,0.08); } }

.hero-title { font-family: var(--font-display); font-size: var(--fs-5xl); font-weight: 700; line-height: 1.08; letter-spacing: -0.03em; margin-bottom: var(--sp-6); display: flex; flex-direction: column; }
.title-line         { color: var(--clr-text); display: block; }
.title-line--accent { color: var(--clr-primary); }
.title-line--dim    { color: var(--clr-text-3); font-size: 0.58em; font-weight: 400; letter-spacing: -0.01em; margin-top: var(--sp-2); }

.hero-subtitle { font-family: var(--font-mono); font-size: var(--fs-sm); color: var(--clr-text-3); margin-bottom: var(--sp-5); display: flex; align-items: center; gap: 0.3em; flex-wrap: wrap; }
.typed-wrapper { display: inline-flex; align-items: center; }
.typed-text { color: var(--clr-primary); font-weight: 500; }
.typed-cursor { color: var(--clr-primary); animation: blink 1s step-end infinite; }
@keyframes blink { 0%,100% { opacity:1; } 50% { opacity:0; } }

.hero-description { font-size: var(--fs-base); color: var(--clr-text-2); max-width: 48ch; margin-bottom: var(--sp-8); line-height: 1.8; }
.hero-cta { display: flex; flex-wrap: wrap; gap: var(--sp-3); margin-bottom: var(--sp-8); }
.hero-badges { display: flex; flex-wrap: wrap; gap: var(--sp-2); }
.badge { font-family: var(--font-mono); font-size: 0.68rem; color: var(--clr-text-3); border: 1px solid var(--clr-border); border-radius: var(--radius-sm); padding: 0.25rem 0.6rem; background: var(--clr-surface-2); transition: all var(--t-fast); }
.badge:hover { border-color: var(--clr-primary-ring); color: var(--clr-primary); background: var(--clr-primary-dim); }

.hero-image-wrap { display: flex; justify-content: flex-end; }
.hero-image-frame { position: relative; width: clamp(200px, 32vw, 380px); aspect-ratio: 2 / 3; }

/* Remove cyberpunk frame decorations */
.frame-glow, .frame-corner { display: none; }

.hero-img { width: 100%; height: 100%; object-fit: cover; object-position: center top; border-radius: var(--radius-lg); border: 1px solid var(--clr-border); display: block; background: var(--clr-surface-2); box-shadow: var(--shadow-md); }

.hero-status-badge { position: absolute; bottom: -14px; left: 50%; transform: translateX(-50%); background: var(--clr-white); border: 1px solid var(--clr-border); border-radius: var(--radius-full); padding: 0.4rem 1rem; font-family: var(--font-mono); font-size: 0.67rem; color: var(--clr-text-3); display: flex; align-items: center; gap: 0.5rem; white-space: nowrap; box-shadow: var(--shadow-sm); z-index: 2; }
.status-dot { width: 6px; height: 6px; border-radius: 50%; background: var(--clr-success); flex-shrink: 0; animation: pulseGreen 2.5s ease-in-out infinite; }

.scroll-indicator { position: absolute; bottom: var(--sp-8); left: 50%; transform: translateX(-50%); display: flex; flex-direction: column; align-items: center; gap: var(--sp-2); z-index: 1; }
.scroll-line { width: 1px; height: 44px; background: linear-gradient(to bottom, transparent, var(--clr-border-2)); animation: scrollLine 2.2s ease-in-out infinite; }
.scroll-label { font-family: var(--font-mono); font-size: 0.6rem; color: var(--clr-text-4); letter-spacing: 0.18em; text-transform: uppercase; }
@keyframes scrollLine { 0% { transform: scaleY(0); transform-origin: top; opacity:0; } 50% { transform: scaleY(1); transform-origin: top; opacity:1; } 100% { transform: scaleY(0); transform-origin: bottom; opacity:0; } }

/* ==========================================================================
   6. ABOUT
   ========================================================================== */
.about { background: var(--clr-bg-2); }
.about-grid { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(2.5rem,5vw,5rem); align-items: start; }
.about-text .section-title { margin-bottom: var(--sp-6); }
.about-text p { color: var(--clr-text-2); margin-bottom: var(--sp-5); font-size: var(--fs-base); line-height: 1.85; }
.about-text .btn { margin-top: var(--sp-3); }
.about-stats { display: grid; grid-template-columns: 1fr 1fr; gap: var(--sp-4); }
.stat-card { background: var(--clr-surface); border: 1px solid var(--clr-border); border-radius: var(--radius-lg); padding: var(--sp-6) var(--sp-5); text-align: center; transition: all var(--t-base) var(--ease-out); box-shadow: var(--shadow-sm); }
.stat-card:hover { border-color: var(--clr-primary-ring); transform: translateY(-3px); box-shadow: var(--shadow-card-hover); }
.stat-icon { font-size: 1.25rem; margin-bottom: var(--sp-3); opacity: 0.85; }
.stat-value { font-family: var(--font-display); font-size: clamp(1.75rem,3.5vw,2.5rem); font-weight: 700; color: var(--clr-primary); line-height: 1; margin-bottom: var(--sp-2); display: flex; align-items: baseline; justify-content: center; gap: 1px; letter-spacing: -0.02em; }
.stat-suffix { font-size: 0.6em; }
.stat-label  { font-size: var(--fs-xs); color: var(--clr-text-3); font-weight: 500; font-family: var(--font-mono); }

/* ==========================================================================
   7. TIMELINE
   ========================================================================== */
.timeline-section { background: var(--clr-bg); }
.timeline { position: relative; max-width: 800px; margin-inline: auto; padding-block: var(--sp-4); }
.timeline::before { content: ''; position: absolute; left: 50%; top: 0; bottom: 0; width: 1px; background: linear-gradient(to bottom, transparent, var(--clr-border-2) 8%, var(--clr-border-2) 92%, transparent); transform: translateX(-50%); }
.timeline-item { display: grid; grid-template-columns: 1fr 32px 1fr; gap: var(--sp-6); margin-bottom: var(--sp-10); position: relative; }
.timeline-item:nth-child(odd)  { grid-template-areas: "card marker empty"; }
.timeline-item:nth-child(even) { grid-template-areas: "empty marker card"; }
.timeline-card   { grid-area: card; }
.timeline-marker { grid-area: marker; }
.timeline-marker { display: flex; flex-direction: column; align-items: center; justify-content: flex-start; padding-top: var(--sp-5); position: relative; }
.marker-ring { width: 16px; height: 16px; border-radius: 50%; border: 2px solid var(--clr-primary); background: var(--clr-white); position: relative; z-index: 1; transition: all var(--t-base); }
.marker-dot  { position: absolute; top: 50%; left: 50%; transform: translate(-50%,-50%); width: 5px; height: 5px; border-radius: 50%; background: var(--clr-primary); transition: all var(--t-base); }
.timeline-item:hover .marker-ring { background: var(--clr-primary); }
.timeline-item:hover .marker-dot  { background: var(--clr-white); }
.timeline-card { background: var(--clr-surface); border: 1px solid var(--clr-border); border-radius: var(--radius-lg); padding: var(--sp-5) var(--sp-6); transition: all var(--t-base) var(--ease-out); box-shadow: var(--shadow-sm); }
.timeline-item:hover .timeline-card { border-color: var(--clr-primary-ring); transform: translateY(-2px); box-shadow: var(--shadow-card-hover); }
.tl-meta { display: flex; align-items: center; gap: var(--sp-3); margin-bottom: var(--sp-3); flex-wrap: wrap; }
.tl-year { font-family: var(--font-mono); font-size: var(--fs-xs); color: var(--clr-text-4); }
.tl-tag  { font-family: var(--font-mono); font-size: 0.63rem; font-weight: 500; padding: 0.15rem 0.5rem; border-radius: var(--radius-sm); letter-spacing: 0.04em; }
.tl-tag--blue  { background: var(--clr-primary-dim); color: var(--clr-primary); }
.tl-tag--red   { background: var(--clr-danger-dim);  color: var(--clr-danger); }
.tl-tag--green { background: var(--clr-success-dim); color: var(--clr-success); }
.tl-title { font-family: var(--font-display); font-size: var(--fs-base); font-weight: 600; color: var(--clr-text); margin-bottom: var(--sp-2); line-height: 1.4; }
.tl-desc  { font-size: var(--fs-sm); color: var(--clr-text-3); line-height: 1.75; }

/* ==========================================================================
   8. SKILLS
   ========================================================================== */
.skills-section { background: var(--clr-bg-2); }
.skills-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: var(--sp-5); }
.skill-card { background: var(--clr-surface); border: 1px solid var(--clr-border); border-radius: var(--radius-lg); padding: var(--sp-6); transition: all var(--t-base) var(--ease-out); box-shadow: var(--shadow-sm); transition-delay: var(--delay,0ms); }
.skill-card:hover { border-color: var(--clr-primary-ring); transform: translateY(-3px); box-shadow: var(--shadow-card-hover); }
.skill-card-icon { width: 36px; height: 36px; color: var(--clr-primary); margin-bottom: var(--sp-4); }
.skill-card-icon svg { width: 100%; height: 100%; }
.skill-card-title { font-family: var(--font-display); font-size: var(--fs-base); font-weight: 600; color: var(--clr-text); margin-bottom: var(--sp-4); }
.skill-tags { display: flex; flex-wrap: wrap; gap: var(--sp-2); }
/* Skill tags — all neutral */
.skill-tags .tag,
.skill-tags .tag--blue,
.skill-tags .tag--green,
.skill-tags .tag--red { background: var(--clr-surface-2); color: var(--clr-text-3); border-color: var(--clr-border); }

/* ==========================================================================
   9. PROJECTS
   ========================================================================== */
.projects-section { background: var(--clr-bg); }
.projects-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: var(--sp-6); }
.project-card { background: var(--clr-surface); border: 1px solid var(--clr-border); border-radius: var(--radius-lg); overflow: hidden; transition: all var(--t-base) var(--ease-out); box-shadow: var(--shadow-sm); transition-delay: var(--delay,0ms); }
.project-card:hover { border-color: var(--clr-primary-ring); transform: translateY(-4px); box-shadow: var(--shadow-card-hover); }
.project-image-wrap { position: relative; aspect-ratio: 16/9; overflow: hidden; }
.project-img-placeholder { width: 100%; height: 100%; display: flex; align-items: center; justify-content: center; position: relative; overflow: hidden; }
.project-img--one   { background: linear-gradient(135deg,#e8f0fe,#dbeafe); }
.project-img--two   { background: linear-gradient(135deg,#e8f5e9,#dcfce7); }
.project-img--three { background: linear-gradient(135deg,#fef2f2,#fee2e2); }
.placeholder-grid { display: none; }
.placeholder-label { position: relative; z-index: 1; font-family: var(--font-mono); font-size: var(--fs-sm); letter-spacing: 0.08em; font-weight: 500; }
.project-img--one   .placeholder-label { color: rgba(37,99,235,0.55); }
.project-img--two   .placeholder-label { color: rgba(22,163,74,0.55); }
.project-img--three .placeholder-label { color: rgba(220,38,38,0.45); }
.project-overlay { display: none; }
.project-body { padding: var(--sp-5) var(--sp-6) var(--sp-6); }
.project-meta { display: flex; align-items: center; justify-content: space-between; margin-bottom: var(--sp-3); }
.project-type { font-family: var(--font-mono); font-size: var(--fs-xs); color: var(--clr-text-4); }
.project-status { font-family: var(--font-mono); font-size: 0.63rem; font-weight: 500; padding: 0.15rem 0.5rem; border-radius: var(--radius-sm); }
.project-status--live { background: var(--clr-success-dim); color: var(--clr-success); }
.project-status--oss  { background: var(--clr-primary-dim); color: var(--clr-primary); }
.project-title { font-family: var(--font-display); font-size: var(--fs-lg); font-weight: 600; color: var(--clr-text); margin-bottom: var(--sp-2); line-height: 1.3; }
.project-desc  { font-size: var(--fs-sm); color: var(--clr-text-3); line-height: 1.75; margin-bottom: var(--sp-4); }
.project-tags  { display: flex; flex-wrap: wrap; gap: var(--sp-2); margin-bottom: var(--sp-5); }
/* Project tags — neutral */
.project-tags .tag,
.project-tags .tag--blue,
.project-tags .tag--green,
.project-tags .tag--red { background: var(--clr-surface-2); color: var(--clr-text-3); border-color: var(--clr-border); }
.project-actions { display: flex; gap: var(--sp-3); flex-wrap: wrap; }

/* ==========================================================================
   10. SERVICES
   ========================================================================== */
.services-section { background: var(--clr-bg-2); }
.services-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: var(--sp-5); }
.service-card { background: var(--clr-surface); border: 1px solid var(--clr-border); border-radius: var(--radius-lg); padding: var(--sp-8) var(--sp-6); transition: all var(--t-base) var(--ease-out); position: relative; overflow: hidden; box-shadow: var(--shadow-sm); transition-delay: var(--delay,0ms); }
.service-accent { position: absolute; top: 0; left: 0; right: 0; height: 2px; background: var(--clr-primary); opacity: 0.65; transform: scaleX(0); transition: transform var(--t-slow) var(--ease-out); }
.service-card:hover { border-color: var(--clr-primary-ring); transform: translateY(-3px); box-shadow: var(--shadow-card-hover); }
.service-card:hover .service-accent { transform: scaleX(1); }
.service-icon { width: 40px; height: 40px; color: var(--clr-primary); margin-bottom: var(--sp-5); transition: transform var(--t-base) var(--ease-out); }
.service-icon svg { width: 100%; height: 100%; }
.service-card:hover .service-icon { transform: scale(1.05); }
.service-title { font-family: var(--font-display); font-size: var(--fs-base); font-weight: 600; color: var(--clr-text); margin-bottom: var(--sp-3); }
.service-desc  { font-size: var(--fs-sm); color: var(--clr-text-3); line-height: 1.8; }

/* ==========================================================================
   11. CONTACT
   ========================================================================== */
.contact-section { background: var(--clr-bg); }
.contact-intro { color: var(--clr-text-3); max-width: 50ch; margin-inline: auto; margin-bottom: clamp(2rem,4vw,3.5rem); margin-top: -1rem; }
.contact-grid { display: grid; grid-template-columns: 1fr 1.65fr; gap: clamp(2.5rem,5vw,5rem); align-items: start; }
.contact-info { display: flex; flex-direction: column; gap: var(--sp-6); }
.contact-item { display: flex; align-items: flex-start; gap: var(--sp-4); }
.contact-icon { width: 40px; height: 40px; flex-shrink: 0; background: var(--clr-surface-2); border: 1px solid var(--clr-border); border-radius: var(--radius-md); display: flex; align-items: center; justify-content: center; color: var(--clr-primary); transition: all var(--t-base); }
.contact-icon svg { width: 17px; height: 17px; }
.contact-item:hover .contact-icon { background: var(--clr-primary-dim); border-color: var(--clr-primary-ring); }
.contact-item-label { font-size: var(--fs-xs); color: var(--clr-text-4); font-family: var(--font-mono); margin-bottom: 2px; }
.contact-item-value { font-size: var(--fs-sm); color: var(--clr-text); transition: color var(--t-fast); }
a.contact-item-value:hover { color: var(--clr-primary); }
.social-links { display: flex; gap: var(--sp-3); margin-top: var(--sp-2); }
.social-link { width: 40px; height: 40px; background: var(--clr-surface-2); border: 1px solid var(--clr-border); border-radius: var(--radius-md); display: flex; align-items: center; justify-content: center; color: var(--clr-text-3); transition: all var(--t-base) var(--ease-out); }
.social-link svg { width: 17px; height: 17px; }
.social-link:hover { background: var(--clr-primary-dim); border-color: var(--clr-primary-ring); color: var(--clr-primary); transform: translateY(-2px); }
.social-link--sm     { width: 36px; height: 36px; }
.social-link--sm svg { width: 15px; height: 15px; }

/* Form */
.contact-form-wrap { position: relative; }
.contact-form { display: flex; flex-direction: column; gap: var(--sp-5); }
.form-row   { display: grid; grid-template-columns: 1fr 1fr; gap: var(--sp-4); }
.form-group { display: flex; flex-direction: column; gap: var(--sp-2); }
.form-label { font-family: var(--font-mono); font-size: var(--fs-xs); color: var(--clr-text-3); letter-spacing: 0.04em; }
.form-input { background: var(--clr-white); border: 1.5px solid var(--clr-border-2); border-radius: var(--radius-md); padding: 0.75rem 1rem; color: var(--clr-text); font-size: var(--fs-sm); outline: none; transition: all var(--t-base); resize: none; width: 100%; }
.form-input::placeholder { color: var(--clr-text-4); }
.form-input:focus { border-color: var(--clr-primary); box-shadow: 0 0 0 3px var(--clr-primary-dim); }
.form-input.error { border-color: var(--clr-danger); box-shadow: 0 0 0 3px var(--clr-danger-dim); }
.form-error { font-family: var(--font-mono); font-size: 0.67rem; color: var(--clr-danger); min-height: 1em; }
.form-textarea { min-height: 130px; }

.btn-loader { display: none; width: 15px; height: 15px; border: 2px solid rgba(255,255,255,0.3); border-top-color: #fff; border-radius: 50%; animation: spin 0.7s linear infinite; }
.btn.loading .btn-text   { opacity: 0.6; }
.btn.loading .btn-loader { display: block; }
@keyframes spin { to { transform: rotate(360deg); } }

.form-success { display: none; flex-direction: column; align-items: center; justify-content: center; text-align: center; gap: var(--sp-4); padding: var(--sp-16) var(--sp-8); background: var(--clr-surface-2); border: 1px solid var(--clr-border); border-radius: var(--radius-lg); height: 100%; }
.form-success.visible { display: flex; animation: fadeInUp 0.5s var(--ease-out) forwards; }
.success-icon { width: 56px; height: 56px; color: var(--clr-success); }
.success-check { stroke-dasharray: 40; stroke-dashoffset: 40; animation: drawCheck 0.5s 0.3s var(--ease-out) forwards; }
@keyframes drawCheck { to { stroke-dashoffset: 0; } }
@keyframes fadeInUp  { from { opacity:0; transform: translateY(12px); } to { opacity:1; transform: none; } }
.form-success h3 { font-family: var(--font-display); font-size: var(--fs-xl); font-weight: 600; color: var(--clr-text); }
.form-success p  { font-size: var(--fs-sm); color: var(--clr-text-3); }

/* ==========================================================================
   12. FOOTER
   ========================================================================== */
.footer { border-top: 1px solid var(--clr-border); padding-block: var(--sp-10); background: var(--clr-bg-2); }
.footer-inner { display: flex; flex-direction: column; align-items: center; gap: var(--sp-4); text-align: center; }
.footer-logo { font-family: var(--font-mono); font-size: 0.95rem; display: flex; align-items: center; gap: 2px; transition: opacity var(--t-fast); }
.footer-logo:hover { opacity: 0.6; }
.footer-tagline { font-family: var(--font-mono); font-size: var(--fs-xs); color: var(--clr-text-4); letter-spacing: 0.05em; }
.footer-social { display: flex; gap: var(--sp-3); }
.footer-copy { font-size: var(--fs-xs); color: var(--clr-text-4); font-family: var(--font-mono); }

/* ==========================================================================
   13. RESPONSIVE — TABLET
   ========================================================================== */
@media (max-width: 1024px) {
  .skills-grid, .projects-grid, .services-grid { grid-template-columns: repeat(2,1fr); }
}
@media (max-width: 900px) {
  .about-grid    { grid-template-columns: 1fr; }
  .about-stats   { grid-template-columns: repeat(4,1fr); gap: var(--sp-3); }
  .contact-grid  { grid-template-columns: 1fr; }
}

/* ==========================================================================
   14. RESPONSIVE — MOBILE
   ========================================================================== */
@media (max-width: 768px) {
  .hamburger { display: flex; }
  .nav-links {
    position: fixed; inset: 0;
    background: rgba(255,255,255,0.97);
    backdrop-filter: blur(20px);
    flex-direction: column; justify-content: center; align-items: center;
    gap: var(--sp-2);
    transform: translateX(100%);
    transition: transform var(--t-slow) var(--ease-out);
    z-index: 99;
  }
  .nav-links.open { transform: translateX(0); }
  .nav-link { font-size: var(--fs-xl); padding: var(--sp-3) var(--sp-6); color: var(--clr-text); }

  /* Hero — text FIRST, image LAST on mobile */
  .hero-inner { grid-template-columns: 1fr; text-align: center; padding-block: var(--sp-20) var(--sp-12); }
  .hero-content    { order: 1; }
  .hero-image-wrap { order: 2; justify-content: center; margin-top: var(--sp-8); }
  .hero-image-frame { width: min(240px,62vw); aspect-ratio: 2/3; }
  .hero-eyebrow, .hero-cta, .hero-badges { justify-content: center; }
  .hero-description { max-width: none; margin-inline: auto; }

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

  /* Timeline — single-sided on mobile */
  .timeline::before { left: 15px; transform: none; }
  .timeline-item,
  .timeline-item:nth-child(odd),
  .timeline-item:nth-child(even) {
    display: grid;
    grid-template-columns: 30px 1fr;
    grid-template-areas: "marker card";
    gap: var(--sp-4);
    margin-bottom: var(--sp-8);
  }
  .timeline-item .timeline-card   { grid-area: card;   }
  .timeline-item .timeline-marker { grid-area: marker; }

  .skills-grid, .projects-grid, .services-grid { grid-template-columns: 1fr; }
  .form-row { grid-template-columns: 1fr; }
}

@media (max-width: 480px) {
  .about-stats { grid-template-columns: 1fr 1fr; }
  .hero-cta { flex-direction: column; align-items: center; }
  .hero-cta .btn { width: 100%; justify-content: center; }
}