/* =============================================
   Portfolio v2.0 — Anesh Maharaj
   ============================================= */

/* --- CSS VARIABLES --- */
:root {
  --orange:     #F26522;
  --black:      #080808;
  --navy:       #0a0f1e;
  --navy-light: #0d1530;
  --gold:       #C9A84C;
  --gold-dim:   #8a6e2e;
  --green:      #2ECC9A;
  --green-dim:  #00aa2b;
  --white:      #e8e8e8;
  --grey:       #555e6e;
  --card-bg:    #0d1225;
  --border:     rgba(201,168,76,0.2);
  --font-display: 'Playfair Display', serif;
  --font-mono:    'JetBrains Mono', monospace;
}

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

html { scroll-behavior: smooth; }

body {
  background-color: var(--black);
  color: var(--white);
  font-family: var(--font-mono);
  font-size: 15px;
  line-height: 1.75;
  overflow-x: hidden;
}

/* Subtle grid texture overlay on body */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  background-image:
    linear-gradient(rgba(0,255,65,0.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0,255,65,0.025) 1px, transparent 1px);
  background-size: 40px 40px;
  pointer-events: none;
  z-index: 0;
}

a {
  color: var(--gold);
  text-decoration: none;
  transition: color 0.2s;
}

a:hover { color: var(--green); }

/* --- UTILITY --- */
.gold   { color: var(--gold); }
.green  { color: var(--green); }
.orange { color: var(--orange); }

/* --- HEADER --- */
header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(8,8,8,0.92);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
  padding: 0 40px;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}

.logo {
  font-family: var(--font-display);
  font-size: 1.4rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--white);
}

.logo-bracket { color: var(--gold); }

nav ul {
  list-style: none;
  display: flex;
  gap: 36px;
}

nav ul li a {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--white);
  position: relative;
  padding-bottom: 4px;
}

nav ul li a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 1px;
  background: var(--gold);
  transition: width 0.3s ease;
}

nav ul li a:hover { color: var(--gold); }
nav ul li a:hover::after { width: 100%; }
nav ul li a.active-nav { color: var(--gold); }
nav ul li a.active-nav::after { width: 100%; }

.header-tagline {
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  color: var(--grey);
  padding: 6px 40px;
  border-top: 1px solid rgba(255,255,255,0.04);
  background: rgba(10,15,30,0.5);
}

/* --- SCROLL PROGRESS BAR --- */
#progress-bar {
  position: fixed;
  top: 0;
  left: 0;
  height: 2px;
  width: 0%;
  background: linear-gradient(90deg, var(--gold), var(--orange));
  z-index: 9998;
  transition: width 0.1s linear;
}

/* --- HERO --- */
#hero {
  position: relative;
  min-height: 92vh;
  display: flex;
  align-items: center;
  padding: 0 80px;
  background: linear-gradient(135deg, var(--black) 0%, var(--navy) 60%, #0a1628 100%);
  overflow: hidden;
}

#hero::after {
  content: '';
  position: absolute;
  top: -100px;
  right: -100px;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(201,168,76,0.07) 0%, transparent 70%);
  pointer-events: none;
}

#particle-canvas {
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
}

.hero-grid-overlay {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(0,255,65,0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0,255,65,0.03) 1px, transparent 1px);
  background-size: 60px 60px;
  pointer-events: none;
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: 700px;
}

.hero-label {
  font-size: 0.8rem;
  color: var(--green);
  letter-spacing: 0.1em;
  margin-bottom: 24px;
  animation: blink-cursor 1.1s step-end infinite;
}

@keyframes blink-cursor {
  0%, 100% { opacity: 1; }
  50%       { opacity: 0.3; }
}

h1 {
  font-family: var(--font-display);
  font-size: clamp(3.5rem, 8vw, 7rem);
  font-weight: 900;
  line-height: 1.0;
  letter-spacing: -0.02em;
  margin-bottom: 28px;
  color: var(--white);
}

.hero-sub {
  font-size: 0.82rem;
  color: var(--grey);
  letter-spacing: 0.08em;
  line-height: 2;
  margin-bottom: 48px;
}

.cta-btn {
  display: inline-block;
  padding: 14px 36px;
  border: 1px solid var(--gold);
  color: var(--gold);
  font-family: var(--font-mono);
  font-size: 0.8rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  transition: background 0.3s, color 0.3s;
}

.cta-btn:hover {
  background: var(--gold);
  color: var(--black);
}

/* --- SECTIONS (shared) --- */
section {
  position: relative;
  z-index: 1;
  padding: 100px 80px;
}

section:nth-child(even) { background: var(--navy); }

.section-inner {
  max-width: 1100px;
  margin: 0 auto;
}

.section-label {
  font-size: 0.72rem;
  letter-spacing: 0.2em;
  color: var(--grey);
  text-transform: uppercase;
  margin-bottom: 12px;
}

h2 {
  font-family: var(--font-display);
  font-size: clamp(2rem, 4vw, 3.2rem);
  font-weight: 700;
  color: var(--white);
  margin-bottom: 48px;
  border-left: 3px solid var(--gold);
  padding-left: 20px;
}

.section-intro {
  color: var(--grey);
  font-size: 0.88rem;
  max-width: 620px;
  margin-bottom: 48px;
  line-height: 1.9;
}

/* --- ABOUT --- */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 320px;
  gap: 64px;
  align-items: start;
}

.about-text p {
  color: #9aa3b2;
  font-size: 0.9rem;
  line-height: 1.9;
  margin-bottom: 20px;
}

.about-stats {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.stat-card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-top: 2px solid var(--gold);
  padding: 20px 16px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.stat-num {
  font-family: var(--font-display);
  font-size: 1.4rem;
  font-weight: 700;
}

.stat-label {
  font-size: 0.68rem;
  color: var(--grey);
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

/* --- SKILLS SECTION --- */
.skills-section {
  margin-top: 60px;
  padding-top: 40px;
  border-top: 1px solid var(--border);
}

.skills-label {
  font-size: 0.7rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--grey);
  margin-bottom: 20px;
}

.skills-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.skill-tag {
  padding: 8px 18px;
  border: 1px solid var(--border);
  color: var(--white);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  transition: all 0.3s;
  cursor: default;
}

.skill-tag:hover {
  border-color: var(--gold);
  color: var(--gold);
  box-shadow: 0 0 12px rgba(201,168,76,0.15);
}

/* --- PROJECTS --- */
.projects-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.project-card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-bottom: 2px solid var(--gold-dim);
  padding: 32px 28px;
  transition: border-color 0.3s, transform 0.3s;
}

.project-card:hover {
  border-bottom-color: var(--gold);
  transform: translateY(-4px);
}

.project-card.placeholder { opacity: 0.75; }

.project-tag {
  font-size: 0.65rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  margin-bottom: 16px;
}

.project-card h3 {
  font-family: var(--font-display);
  font-size: 1.15rem;
  color: var(--white);
  margin-bottom: 12px;
}

.project-card p {
  font-size: 0.82rem;
  color: var(--grey);
  line-height: 1.8;
  margin-bottom: 20px;
}

.project-tech {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  overflow: hidden;
}

.project-tech span {
  font-size: 0.65rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  border: 1px solid var(--gold-dim);
  color: var(--gold);
  padding: 3px 10px;
}

/* --- FILTER BUTTONS --- */
.filter-buttons {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin-bottom: 40px;
}

.filter-btn {
  padding: 8px 20px;
  border: 1px solid var(--border);
  background: transparent;
  color: var(--grey);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  cursor: pointer;
  transition: all 0.3s;
}

.filter-btn:hover {
  border-color: var(--gold);
  color: var(--gold);
}

.filter-btn.active {
  background: var(--gold);
  color: var(--black);
  border-color: var(--gold);
}

.flip-card-v.hidden { display: none; }

/* --- VERTICAL FLIP CARDS --- */
.flip-card-v {
  height: 300px;
  perspective: 1000px;
  cursor: pointer;
}

.flip-inner-v {
  position: relative;
  width: 100%;
  height: 100%;
  transform-style: preserve-3d;
  transition: transform 0.7s cubic-bezier(0.4,0.2,0.2,1);
}

.flip-card-v:hover .flip-inner-v {
  transform: rotateX(180deg);
}

.flip-card-v.flipped .flip-inner-v {
  transform: rotateX(180deg);
}

.flip-front-v, .flip-back-v {
  position: absolute;
  inset: 0;
  backface-visibility: hidden;
  border: 1px solid var(--border);
  padding: 28px 24px;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
}

.flip-front-v {
  background: linear-gradient(160deg, #0d1225, #0a1628);
  border-bottom: 2px solid var(--gold);
  justify-content: flex-end;
}

.flip-icon {
  font-size: 2.4rem;
  margin-bottom: auto;
  padding-top: 8px;
}

.flip-front-v h3 {
  font-family: var(--font-display);
  font-size: 1.1rem;
  color: var(--white);
  margin-bottom: 6px;
}

.flip-hint {
  font-size: 0.6rem;
  color: var(--grey);
  letter-spacing: 0.1em;
  margin-top: 6px;
}

.flip-img {
  width: 100%;
  height: 160px;
  object-fit: contain;
  margin-bottom: auto;
  flex-shrink: 0;
}

.flip-img-contain {
  object-fit: contain;
  background: transparent;
}

.flip-back-v {
  background: linear-gradient(160deg, #1a0f0a, #0a1628);
  border-top: 2px solid var(--orange);
  transform: rotateX(180deg);
  justify-content: flex-start;
  gap: 10px;
}

.flip-back-v h3 {
  font-family: var(--font-display);
  font-size: 1rem;
  color: var(--gold);
}

.flip-back-v p {
  font-size: 0.76rem;
  color: #9aa3b2;
  line-height: 1.8;
  flex: 1;
}

/* live project link */
.project-link {
  display: inline-block;
  margin-top: 12px;
  font-size: 0.68rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--green);
  text-decoration: none;
  border-bottom: 1px solid rgba(46,204,154,0.3);
  transition: all 0.2s;
  position: relative;
  z-index: 100;
}

.project-link:hover {
  color: var(--gold);
  border-bottom-color: var(--gold);
}

/* --- CONTACT SECTION --- */
#contact {
  position: relative;
  overflow: hidden;
}

#contact-matrix {
  position: absolute;
  inset: 0;
  z-index: 0;
  opacity: 0.12;
  pointer-events: none;
}

.contact-overlay {
  position: absolute;
  inset: 0;
  z-index: 1;
  background: radial-gradient(ellipse at center, rgba(8,8,8,0.2) 0%, rgba(8,8,8,0.75) 100%);
  pointer-events: none;
}

#contact .section-inner {
  position: relative;
  z-index: 2;
}

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: start;
}

.contact-desc {
  font-size: 0.82rem;
  color: var(--grey);
  line-height: 1.9;
  margin-bottom: 36px;
}

.contact-details {
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.contact-line {
  font-size: 0.82rem;
  color: #9aa3b2;
  letter-spacing: 0.06em;
  display: flex;
  gap: 12px;
  align-items: center;
}

.contact-line a { color: var(--green); }
.contact-line a:hover { color: var(--gold); }

.contact-form {
  background: rgba(13,18,37,0.88);
  border: 1px solid var(--border);
  border-top: 2px solid var(--gold);
  padding: 40px 36px;
  backdrop-filter: blur(14px);
}

.form-title {
  font-size: 0.68rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--green);
  margin-bottom: 28px;
}

.form-group { margin-bottom: 22px; }

.form-group label {
  display: block;
  font-size: 0.63rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--grey);
  margin-bottom: 8px;
}

.form-group input,
.form-group textarea {
  width: 100%;
  background: rgba(0,8,4,0.6);
  border: 1px solid rgba(0,255,65,0.08);
  border-bottom: 1px solid rgba(0,255,65,0.3);
  color: var(--white);
  font-family: var(--font-mono);
  font-size: 0.82rem;
  padding: 12px 16px;
  outline: none;
  transition: border-color 0.3s, box-shadow 0.3s;
  resize: none;
  caret-color: #00FF41;
}

.form-group input::placeholder,
.form-group textarea::placeholder { color: rgba(85,94,110,0.6); }

.form-group input:focus,
.form-group textarea:focus {
  border-color: #00aa2b;
  box-shadow: 0 0 0 1px rgba(0,255,65,0.08);
}

.form-group input.error,
.form-group textarea.error {
  border-color: var(--orange);
  box-shadow: 0 0 0 1px rgba(242,101,34,0.15);
}

.form-group input.success,
.form-group textarea.success { border-color: #00aa2b; }

.error-msg {
  font-size: 0.6rem;
  color: var(--orange);
  letter-spacing: 0.08em;
  margin-top: 6px;
  display: none;
}

.error-msg.visible { display: block; }

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

.char-count {
  font-size: 0.58rem;
  color: var(--grey);
  text-align: right;
  margin-top: 4px;
}

.submit-btn {
  width: 100%;
  padding: 14px;
  background: transparent;
  border: 1px solid #00aa2b;
  color: #00FF41;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  cursor: pointer;
  transition: all 0.3s;
  position: relative;
  overflow: hidden;
  margin-top: 8px;
}

.submit-btn::before {
  content: '';
  position: absolute;
  inset: 0;
  background: #00aa2b;
  transform: translateX(-100%);
  transition: transform 0.3s ease;
  z-index: -1;
}

.submit-btn:hover { color: var(--black); border-color: #00FF41; }
.submit-btn:hover::before { transform: translateX(0); }

.toast {
  position: fixed;
  bottom: 80px;
  right: 40px;
  background: rgba(0,10,5,0.95);
  border: 1px solid #00aa2b;
  border-left: 3px solid #00FF41;
  padding: 16px 24px;
  font-size: 0.75rem;
  color: var(--white);
  letter-spacing: 0.08em;
  z-index: 1000;
  backdrop-filter: blur(10px);
  transform: translateY(100px);
  opacity: 0;
  transition: all 0.4s cubic-bezier(0.4,0,0.2,1);
  pointer-events: none;
}

.toast.show { transform: translateY(0); opacity: 1; }
.tick { color: #00FF41; margin-right: 10px; }

/* --- FOOTER --- */
footer {
  background: var(--black);
  border-top: 1px solid var(--border);
  padding: 28px 80px;
  position: fixed;
  bottom: 0;
  left: 0;
  width: 100%;
  z-index: 99;
}

.footer-inner {
  max-width: 1100px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.78rem;
  color: var(--grey);
}

.footer-copy { letter-spacing: 0.08em; }

.back-top {
  color: var(--grey);
  font-size: 0.75rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  transition: color 0.2s;
}

.back-top:hover { color: var(--green); }

/* --- LOADING SCREEN --- */
#loader {
  position: fixed;
  inset: 0;
  background: var(--black);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  z-index: 9999;
  gap: 32px;
  transition: opacity 0.8s ease, visibility 0.8s ease;
}

#loader.hide {
  opacity: 0;
  visibility: hidden;
}

#loader::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(0,255,65,0.02) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0,255,65,0.02) 1px, transparent 1px);
  background-size: 40px 40px;
  pointer-events: none;
}

#loader-matrix {
  position: absolute;
  inset: 0;
  z-index: 0;
  opacity: 0.25;
}

.loader-logo {
  font-family: var(--font-display);
  font-size: 1.4rem;
  color: var(--white);
  letter-spacing: 0.08em;
  z-index: 1;
}

.terminal-loader {
  border: 1px solid #1a2a1a;
  background-color: #0a0a0a;
  color: #00FF41;
  font-family: var(--font-mono);
  font-size: 0.95rem;
  padding: 1.5em 1.2em;
  width: 18em;
  box-shadow:
    0 0 0 1px rgba(0,255,65,0.08),
    0 8px 32px rgba(0,0,0,0.6),
    0 0 60px rgba(0,255,65,0.04);
  border-radius: 6px;
  position: relative;
  overflow: hidden;
  z-index: 1;
}

.terminal-header {
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 1.8em;
  background-color: #111;
  border-bottom: 1px solid #1a2a1a;
  border-top-left-radius: 6px;
  border-top-right-radius: 6px;
  padding: 0 0.6em;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.terminal-controls { display: flex; gap: 0.4em; align-items: center; }

.control {
  width: 0.65em;
  height: 0.65em;
  border-radius: 50%;
  background-color: #333;
}

.control.close    { background-color: #e33; }
.control.minimize { background-color: #ee0; }
.control.maximize { background-color: #0b0; }

.terminal-title {
  font-size: 0.65rem;
  color: #555;
  letter-spacing: 0.1em;
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
}

.text {
  display: inline-block;
  white-space: nowrap;
  overflow: hidden;
  border-right: 0.2em solid #00FF41;
  margin-top: 1.8em;
  animation:
    typeAndDelete 4s steps(22) infinite,
    blinkCursor 0.5s step-end infinite alternate;
}

@keyframes blinkCursor {
  50% { border-right-color: transparent; }
}

@keyframes typeAndDelete {
  0%,  10% { width: 0; }
  45%, 55% { width: 22ch; }
  90%,100% { width: 0; }
}

.progress-wrap {
  width: 18em;
  z-index: 1;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.progress-label {
  display: flex;
  justify-content: space-between;
  font-size: 0.6rem;
  color: var(--grey);
  letter-spacing: 0.12em;
}

.progress-label span:last-child { color: #00FF41; }

.progress-bar-bg {
  width: 100%;
  height: 2px;
  background: rgba(0,255,65,0.1);
  overflow: hidden;
}

.progress-bar-fill {
  height: 100%;
  width: 0%;
  background: linear-gradient(90deg, #00aa2b, #00FF41);
  box-shadow: 0 0 8px rgba(0,255,65,0.5);
  animation: fillProgress 3s ease forwards;
}

@keyframes fillProgress {
  0%   { width: 0%; }
  20%  { width: 25%; }
  50%  { width: 60%; }
  75%  { width: 80%; }
  95%  { width: 95%; }
  100% { width: 100%; }
}

.skip-btn {
  position: fixed;
  bottom: 30px;
  right: 30px;
  font-size: 0.62rem;
  color: var(--grey);
  letter-spacing: 0.12em;
  cursor: pointer;
  background: none;
  border: none;
  font-family: var(--font-mono);
  z-index: 10000;
  transition: color 0.2s;
}

.skip-btn:hover { color: #00FF41; }

/* =============================================
   RESPONSIVE — MOBILE (≤ 768px)
   ============================================= */
@media (max-width: 768px) {
  header { padding: 0 20px; }
  .header-tagline { padding: 6px 20px; font-size: 0.62rem; }
  #hero { padding: 60px 24px; min-height: 80vh; }
  section { padding: 70px 24px; }
  .about-grid { grid-template-columns: 1fr; gap: 40px; }
  .projects-grid { grid-template-columns: 1fr; }
  .contact-grid { grid-template-columns: 1fr; gap: 40px; }
  .contact-form { padding: 28px 20px; }
  footer { padding: 24px; }
  .footer-inner {
    flex-direction: row;
    flex-wrap: wrap;
    gap: 5px;
    text-align: center;
    justify-content: center;
  }
  nav ul { gap: 20px; }
}

/* =============================================
   RESPONSIVE — TABLET (769px – 1024px)
   ============================================= */
@media (min-width: 769px) and (max-width: 1024px) {
  #hero { padding: 60px 40px; }
  section { padding: 80px 40px; }
  .about-grid { grid-template-columns: 1fr 260px; gap: 40px; }
  .projects-grid { grid-template-columns: repeat(2, 1fr); }
  footer { padding: 24px 40px; }
}