/* ==========================================================================
   PORTFOLIO DESIGN SYSTEM & MOTION FOUNDATION
   Sreerang P — Software, Data & AI Builder
   ========================================================================== */

:root {
  color-scheme: dark;
  --bg: #090909;
  --surface: #111111;
  --surface-hover: #161616;
  --white: #ededed;
  --muted: #a3a3a3;
  --dim: #707070;
  --line: rgba(255, 255, 255, 0.14);
  --line-strong: rgba(255, 255, 255, 0.32);
  --mono: "DM Mono", monospace;
  --sans: "Manrope", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  
  /* Motion Tokens */
  --ease-out-expo: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-standard: cubic-bezier(0.2, 0.75, 0.25, 1);
  --dur-fast: 200ms;
  --dur-med: 350ms;
  --dur-slow: 700ms;
  --dur-reveal: 850ms;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 90px;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--white);
  font-family: var(--sans);
  line-height: 1.6;
  overflow-x: hidden;
  position: relative;
}

/* Subtle Architectural Grid Background */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  background-image:
    linear-gradient(to right, rgba(255, 255, 255, 0.018) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(255, 255, 255, 0.018) 1px, transparent 1px);
  background-size: 64px 64px;
  pointer-events: none;
  z-index: 1;
}

a {
  color: inherit;
  text-decoration: none;
}

button, a {
  -webkit-tap-highlight-color: transparent;
}

::selection {
  background: #eee;
  color: #090909;
}

.mono,
.section-kicker,
.hero-index,
.hero-bottom,
.project-number,
.project-card > a,
.text-link,
.contact-link,
.site-footer {
  font-family: var(--mono);
  letter-spacing: 0.08em;
}

/* Inset Page Frame */
.page-frame {
  position: fixed;
  inset: 9px;
  border: 1px solid rgba(255, 255, 255, 0.2);
  pointer-events: none;
  z-index: 35;
}

/* Scroll Progress Indicator */
.scroll-progress-bar {
  position: fixed;
  top: 9px;
  left: 9px;
  right: 9px;
  height: 2px;
  background: rgba(255, 255, 255, 0.06);
  z-index: 40;
  pointer-events: none;
}

.scroll-progress-bar::after {
  content: "";
  display: block;
  height: 100%;
  width: var(--scroll-progress, 0%);
  background: linear-gradient(90deg, #777777, #ffffff);
  transition: width 0.08s linear;
}

/* Desktop Cursor Spotlight */
.cursor-spotlight {
  position: fixed;
  top: 0;
  left: 0;
  width: 650px;
  height: 650px;
  margin-left: -325px;
  margin-top: -325px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(255, 255, 255, 0.038) 0%, transparent 68%);
  pointer-events: none;
  z-index: 2;
  opacity: 0;
  transition: opacity var(--dur-med) ease;
  transform: translate3d(var(--spotlight-x, -999px), var(--spotlight-y, -999px), 0);
  will-change: transform;
}

@media (hover: hover) and (pointer: fine) {
  .cursor-spotlight.is-active {
    opacity: 1;
  }
}

@media (hover: none), (pointer: coarse) {
  .cursor-spotlight {
    display: none !important;
  }
}

/* ==========================================================================
   SITE HEADER & NAVIGATION
   ========================================================================== */
.site-header {
  height: 84px;
  padding: 0 4.1%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.07);
  position: fixed;
  top: 9px;
  left: 9px;
  right: 9px;
  z-index: 30;
  background: transparent;
  transition: background var(--dur-med) ease, backdrop-filter var(--dur-med) ease, border-color var(--dur-med) ease;
}

.site-header.is-scrolled {
  background: rgba(9, 9, 9, 0.85);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom-color: rgba(255, 255, 255, 0.12);
}

.brand {
  font-size: 1.5rem;
  font-weight: 800;
  letter-spacing: -0.06em;
  position: relative;
  transition: opacity var(--dur-fast) ease;
}

.brand:hover {
  opacity: 0.8;
}

.main-nav {
  display: flex;
  gap: clamp(22px, 3.4vw, 54px);
  margin-left: auto;
}

.main-nav a {
  font-size: 0.96rem;
  color: #c7c7c7;
  position: relative;
  padding: 6px 0;
  transition: color var(--dur-fast) ease;
}

.main-nav a::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0%;
  height: 1px;
  background: var(--white);
  transition: width var(--dur-med) var(--ease-out-expo);
}

.main-nav a:hover,
.main-nav a.is-active {
  color: #fff;
}

.main-nav a:hover::after,
.main-nav a.is-active::after {
  width: 100%;
}

.header-contact {
  font: 500 0.7rem var(--mono);
  letter-spacing: 0.1em;
  color: #aaa;
  margin-left: 30px;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 14px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  transition: color var(--dur-fast) ease, border-color var(--dur-fast) ease, background var(--dur-fast) ease;
}

.header-contact span {
  font-size: 0.9rem;
  transition: transform var(--dur-fast) var(--ease-out-expo);
}

.header-contact:hover {
  color: #fff;
  border-color: rgba(255, 255, 255, 0.4);
  background: rgba(255, 255, 255, 0.04);
}

.header-contact:hover span {
  transform: translate(2px, -2px);
}

.menu-toggle {
  display: none;
  background: none;
  border: 0;
  color: white;
  font-size: 1.4rem;
  cursor: pointer;
}

/* ==========================================================================
   HERO SECTION
   ========================================================================== */
.hero {
  position: relative;
  min-height: min(920px, 100svh);
  min-height: max(780px, 100svh);
  padding: 140px 4.1% 60px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  isolation: isolate;
  z-index: 2;
}

.hero-index {
  position: absolute;
  top: 118px;
  left: 4.1%;
  right: 4.1%;
  display: flex;
  justify-content: space-between;
  color: #777;
  font-size: 0.62rem;
}

.hero-name-wrap {
  position: relative;
  margin-top: 10px;
  z-index: 2;
}

.hero-name {
  margin: 0;
  font-size: clamp(6rem, 18.2vw, 18rem);
  line-height: 0.72;
  letter-spacing: -0.105em;
  font-weight: 800;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
}

.name-first {
  white-space: nowrap;
}

.name-last {
  align-self: flex-end;
  margin-right: 22%;
  margin-top: 0.18em;
}

.period {
  color: #888;
}

.hero-role {
  position: absolute;
  top: calc(100% + 16px);
  right: 0;
  display: flex;
  gap: 18px;
  align-items: stretch;
  color: #c8c8c8;
  font: 0.72rem/1.85 var(--mono);
  letter-spacing: 0.035em;
}

.vertical-rule {
  display: block;
  width: 1px;
  background: #888;
}

.hero-role-text {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.hero-role-rotator {
  display: inline-block;
  font-size: 0.78rem;
  color: #ffffff;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  transition: opacity 0.28s ease, transform 0.28s var(--ease-out-expo);
  will-change: transform, opacity;
}

.hero-role-rotator.is-transitioning {
  opacity: 0;
  transform: translateY(6px);
}

.hero-role-text p {
  margin: 0;
  color: #9e9e9e;
}

.hero-statement {
  font-size: clamp(1rem, 1.5vw, 1.3rem);
  line-height: 1.65;
  color: #929292;
  max-width: 350px;
  margin: 35px 0 0 1%;
  position: relative;
  z-index: 3;
}

.hero-bottom {
  position: absolute;
  bottom: 48px;
  left: 4.1%;
  right: 4.1%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.61rem;
  color: #777;
}

.scroll-cue {
  display: flex;
  align-items: center;
  gap: 15px;
  transition: color var(--dur-fast) ease;
}

.scroll-cue:hover {
  color: #fff;
}

.scroll-line {
  display: inline-block;
  width: 1px;
  height: 30px;
  background: #bbb;
  transform-origin: top;
  animation: scrollLinePulse 2.4s ease-in-out infinite;
}

@keyframes scrollLinePulse {
  0%, 100% { transform: scaleY(0.7); opacity: 0.5; }
  50% { transform: scaleY(1); opacity: 1; }
}

.down-arrow {
  font-size: 1.1rem;
  margin-left: 8px;
  display: inline-block;
  transition: transform var(--dur-fast) var(--ease-out-expo);
}

.scroll-cue:hover .down-arrow {
  transform: translateY(3px);
}

.page-count {
  letter-spacing: 0.14em;
}

.page-count i {
  font-style: normal;
  color: #555;
  padding: 0 5px;
}

/* ==========================================================================
   SP ANIMATED ORB (RIVE CANVAS + CSS FALLBACK)
   ========================================================================== */
.hero-orb-wrap {
  position: absolute;
  z-index: 2;
  width: clamp(220px, 23vw, 350px);
  aspect-ratio: 1 / 1;
  right: 4.5%;
  top: clamp(130px, 18vh, 195px);
  line-height: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  perspective: 900px;
  transform-style: preserve-3d;
  pointer-events: auto;
  cursor: grab;
  transition: opacity var(--dur-med) ease;
  user-select: none;
  -webkit-user-select: none;
  touch-action: none;
}

.hero-orb-wrap:active,
.hero-orb-wrap.is-dragging {
  cursor: grabbing;
}

.hero-orb-canvas {
  width: 100%;
  height: 100%;
  display: block;
  opacity: 0.94;
  filter: drop-shadow(0 0 35px rgba(255, 255, 255, 0.08));
  transition: opacity var(--dur-med) ease;
  will-change: transform;
}

/* SP Identity Orb */
.hero-orb-fallback {
  position: relative;
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 1;
  will-change: transform;
}

.hero-orb-wrap.is-loaded .hero-orb-fallback {
  opacity: 1;
}

.hero-orb-fallback-img {
  width: 100%;
  height: 100%;
  display: block;
  filter: drop-shadow(0 0 45px rgba(255, 255, 255, 0.06));
}

.fallback-ring {
  position: absolute;
  border-radius: 50%;
  box-sizing: border-box;
  will-change: transform;
}

.fallback-ring-outer {
  width: 52%;
  height: 52%;
  border: 1.5px solid rgba(237, 237, 237, 0.85);
  animation: fallbackSpin 12s linear infinite;
}

.fallback-highlight {
  position: absolute;
  width: 9px;
  height: 9px;
  background: #ffffff;
  border-radius: 50%;
  top: 14%;
  right: 14%;
  box-shadow: 0 0 14px rgba(255, 255, 255, 0.8);
}

.fallback-ring-middle {
  width: 36%;
  height: 36%;
  border: 1px solid rgba(119, 119, 119, 0.7);
}

.fallback-ring-inner {
  width: 22%;
  height: 22%;
  border: 1px solid rgba(237, 237, 237, 0.75);
  background: rgba(17, 17, 17, 0.25);
  display: flex;
  align-items: center;
  justify-content: center;
}

.fallback-sp {
  font-family: var(--sans);
  font-weight: 700;
  font-size: 0.85rem;
  color: #ededed;
  letter-spacing: -0.02em;
}

@keyframes fallbackSpin {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

/* ==========================================================================
   ABOUT / INTRO SECTION
   ========================================================================== */
.section-pad {
  padding: 130px 8.2%;
  border-top: 1px solid var(--line);
  position: relative;
  z-index: 2;
}

.section-kicker {
  font-size: 0.66rem;
  color: #777;
  margin-bottom: 70px;
}

.section-kicker span {
  color: #eee;
  margin-right: 12px;
}

.intro-grid,
.contact-grid {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 80px;
  align-items: start;
}

.intro-left {
  display: flex;
  flex-direction: column;
}

.skills-visual-tag {
  display: block;
  padding: 8px 14px;
  font-size: 0.6rem;
  color: #666;
  border-top: 1px solid var(--line);
  letter-spacing: 0.1em;
  background: #090909;
}

.section-heading {
  font-size: clamp(2.8rem, 6.2vw, 6.4rem);
  letter-spacing: -0.075em;
  line-height: 1.02;
  margin: 0;
  font-weight: 700;
}

.section-heading span,
.contact-heading span {
  color: #777;
}

.intro-copy {
  max-width: 420px;
  color: #aaa;
  font-size: 1rem;
}

.intro-copy p {
  margin: 0 0 28px;
  line-height: 1.75;
}

.text-link,
.contact-link {
  display: inline-flex;
  align-items: center;
  gap: 14px;
  font-size: 0.67rem;
  color: #eee;
  border-bottom: 1px solid #777;
  padding-bottom: 8px;
  position: relative;
  transition: color var(--dur-fast) ease, border-color var(--dur-fast) ease;
}

.text-link span,
.contact-link span {
  font-size: 0.95rem;
  transition: transform var(--dur-fast) var(--ease-out-expo);
}

.text-link:hover,
.contact-link:hover {
  color: #fff;
  border-color: #fff;
}

.text-link:hover span,
.contact-link:hover span {
  transform: translate(3px, -3px);
}

/* ==========================================================================
   SKILLS SECTION
   ========================================================================== */
.skills-section {
  background: #0d0d0d;
}

.skills-heading-row,
.projects-heading-row {
  display: flex;
  justify-content: space-between;
  align-items: end;
  gap: 40px;
}

.section-note {
  max-width: 260px;
  color: #777;
  font-size: 0.9rem;
  margin: 0 0 6px;
}

/* Skills Constellation Visual */
.skills-constellation-wrap {
  margin-top: 48px;
  border: 1px solid var(--line);
  background: #0b0b0b;
  overflow: hidden;
  transition: border-color var(--dur-med) ease;
}

.skills-constellation-wrap:hover {
  border-color: rgba(255, 255, 255, 0.3);
}

.skills-visual-frame {
  width: 100%;
  aspect-ratio: 16 / 9.8;
  max-height: 420px;
  position: relative;
  background: #080808;
  display: flex;
  align-items: center;
  justify-content: center;
}

.skills-visual-img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  display: block;
}

.skills-list {
  list-style: none;
  padding: 0;
  margin: 65px 0 0;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  border-top: 1px solid var(--line);
}

.skills-list li {
  padding: 23px 12px 23px 18px;
  border-bottom: 1px solid var(--line);
  font-size: 1rem;
  color: #cfcfcf;
  position: relative;
  display: flex;
  align-items: center;
  transition: background var(--dur-fast) ease, color var(--dur-fast) ease, transform var(--dur-fast) var(--ease-out-expo);
}

.skills-list li:before {
  content: "↗";
  font: 0.8rem var(--mono);
  color: #777;
  margin-right: 15px;
  transition: transform var(--dur-fast) var(--ease-out-expo), color var(--dur-fast) ease;
}

.skills-list li:hover {
  background: rgba(255, 255, 255, 0.04);
  color: #ffffff;
  transform: translateX(4px);
}

.skills-list li:hover:before {
  color: #ffffff;
  transform: translate(2px, -2px);
}

/* ==========================================================================
   EDUCATION & CERTIFICATIONS (TIMELINE)
   ========================================================================== */
.education-section {
  background: #090909;
}

.education-grid,
.certifications-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  border-top: 1px solid var(--line);
  border-left: 1px solid var(--line);
}

.education-item,
.certification-item {
  min-height: 230px;
  padding: 34px;
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  position: relative;
  transition: background var(--dur-med) ease;
}

.education-item:hover,
.certification-item:hover {
  background: rgba(255, 255, 255, 0.025);
}

.education-item h3,
.certification-item h3 {
  font-size: clamp(1.35rem, 2.5vw, 2.15rem);
  line-height: 1.2;
  letter-spacing: -0.045em;
  margin: 32px 0 10px;
}

.education-item p,
.certification-item p {
  color: #aaa;
  margin: 0 0 8px;
}

.education-detail {
  font: 0.65rem var(--mono);
  letter-spacing: 0.07em;
  color: #777;
}

.certifications-section {
  background: #0d0d0d;
}

.certification-item {
  min-height: 210px;
}

/* ==========================================================================
   PROJECTS SECTION (CARDS & 3D TILT)
   ========================================================================== */
.projects-heading-row {
  margin-bottom: 65px;
}

.projects-heading-row .section-heading span {
  color: #777;
}

.projects-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  border-top: 1px solid var(--line);
  border-left: 1px solid var(--line);
}

.project-card {
  min-height: 310px;
  padding: 36px;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background: #090909;
  transition: background var(--dur-med) ease, border-color var(--dur-med) ease, transform var(--dur-med) var(--ease-out-expo);
  position: relative;
  transform-style: preserve-3d;
  will-change: transform;
}

.project-card:hover {
  background: #131313;
  border-color: rgba(255, 255, 255, 0.35);
  transform: translateY(-4px);
}

.project-number {
  font-size: 0.62rem;
  color: #777;
}

.project-card h3 {
  font-size: clamp(1.6rem, 3vw, 2.7rem);
  letter-spacing: -0.055em;
  margin: 36px 0 8px;
}

.project-card p {
  color: #8e8e8e;
  max-width: 390px;
  font-size: 0.9rem;
  margin: 0 0 25px;
  line-height: 1.65;
}

.project-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 22px;
  align-items: center;
  margin-top: auto;
  padding-top: 16px;
}

.project-actions a {
  font: 0.62rem var(--mono);
  letter-spacing: 0.08em;
  color: #ddd;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: color var(--dur-fast) ease;
}

.project-actions a:hover {
  color: #ffffff;
}

/* ==========================================================================
   PROJECT PREVIEW IMAGES (SVG MOCKUPS IN CARDS)
   ========================================================================== */
.project-preview-frame {
  width: 100%;
  aspect-ratio: 16 / 9;
  overflow: hidden;
  position: relative;
  background: #0a0a0a;
  margin-bottom: 24px;
  border: 1px solid var(--line);
  clip-path: inset(0 100% 0 0);
  transition: clip-path 0.8s var(--ease-out-expo), border-color var(--dur-med) ease;
}

.project-preview-frame.revealed,
.project-card.is-visible .project-preview-frame {
  clip-path: inset(0 0% 0 0);
}

.project-card:hover .project-preview-frame {
  border-color: rgba(255, 255, 255, 0.2);
}

.project-preview-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform 0.7s var(--ease-out-expo), filter 0.4s ease;
  filter: brightness(0.92) saturate(0.9);
}

.project-card:hover .project-preview-img {
  transform: scale(1.04);
  filter: brightness(1) saturate(1);
}

.project-preview-overlay {
  position: absolute;
  inset: auto 0 0 0;
  height: 55%;
  background: linear-gradient(to top, #090909 0%, rgba(9, 9, 9, 0.6) 50%, transparent 100%);
  pointer-events: none;
}

/* ==========================================================================
   CONTACT LAYOUT WITH VISUAL
   ========================================================================== */
.contact-left {
  display: flex;
  flex-direction: column;
  justify-content: flex-start;
}

.contact-visual-card {
  border: 1px solid var(--line);
  background: #0a0a0a;
  overflow: hidden;
  position: relative;
  transition: border-color var(--dur-med) ease;
}

.contact-visual-card:hover {
  border-color: rgba(255, 255, 255, 0.25);
}

.contact-visual-frame {
  width: 100%;
  aspect-ratio: 1 / 1;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  background: radial-gradient(ellipse at center, #131313 0%, #090909 80%);
}

.contact-visual-img {
  width: 90%;
  height: 90%;
  object-fit: contain;
  display: block;
  transition: transform 0.9s var(--ease-out-expo);
}

.contact-visual-card:hover .contact-visual-img {
  transform: scale(1.06) rotate(3deg);
}

/* ==========================================================================
   CONTACT SECTION & FORM
   ========================================================================== */
.contact-section {
  background: #0d0d0d;
}

.contact-heading {
  font-size: clamp(3.5rem, 8.5vw, 8.5rem);
  line-height: 0.98;
  letter-spacing: -0.09em;
  margin: 0;
}

.contact-copy {
  max-width: 360px;
  color: #999;
}

.contact-copy p {
  margin: 0 0 28px;
  line-height: 1.7;
}

.contact-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 20px;
}

.contact-form-wrap {
  max-width: 760px;
  margin: 78px auto 0;
  padding: clamp(24px, 4vw, 42px);
  border: 1px solid var(--line);
  background: #090909;
  position: relative;
}

.contact-form-heading {
  margin-bottom: 32px;
}

.contact-form-heading h3 {
  font-size: clamp(2rem, 4vw, 3.4rem);
  letter-spacing: -0.07em;
  line-height: 1.05;
  margin: 18px 0 8px;
}

.contact-form-heading h3 span {
  color: #777;
}

.contact-form-heading p {
  color: #888;
  margin: 0;
  max-width: 480px;
}

#portfolio-contact-form {
  display: grid;
  gap: 20px;
}

.form-group {
  display: grid;
  gap: 9px;
}

.form-group label {
  font: 0.65rem var(--mono);
  letter-spacing: 0.09em;
  text-transform: uppercase;
  color: #aaa;
}

.form-group label span {
  color: #fff;
}

.form-control {
  width: 100%;
  min-height: 50px;
  padding: 14px 15px;
  border: 1px solid rgba(255, 255, 255, 0.17);
  border-radius: 0;
  background: #101010;
  color: #eee;
  font: 0.9rem var(--sans);
  outline: none;
  transition: border-color var(--dur-fast) ease, background var(--dur-fast) ease, box-shadow var(--dur-fast) ease;
}

.form-control::placeholder {
  color: #666;
}

.form-control:focus {
  border-color: #ededed;
  background: #141414;
  box-shadow: 0 0 16px rgba(255, 255, 255, 0.08);
}

textarea.form-control {
  min-height: 150px;
  resize: vertical;
}

.send-message-btn {
  width: 100%;
  min-height: 54px;
  padding: 14px 18px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  background: #ededed;
  color: #090909;
  font: 600 0.72rem var(--mono);
  letter-spacing: 0.09em;
  text-transform: uppercase;
  border: 1px solid #ededed;
  cursor: pointer;
  transition: background var(--dur-fast) ease, color var(--dur-fast) ease, transform var(--dur-fast) var(--ease-out-expo);
}

.send-message-btn:hover {
  background: transparent;
  color: #ededed;
}

.send-message-btn:disabled {
  opacity: 0.6;
  cursor: wait;
}

.form-status {
  display: none;
  padding: 14px 16px;
  border: 1px solid rgba(255, 255, 255, 0.25);
  color: #ddd;
  font-size: 0.88rem;
}

.form-status.success,
.form-status.error {
  display: block;
}

.form-status.success {
  border-color: rgba(150, 210, 170, 0.5);
  color: #b9e3c5;
}

.form-status.error {
  border-color: rgba(255, 150, 150, 0.5);
  color: #ffc2c2;
}

.contact-form-iframe {
  display: none;
}

/* ==========================================================================
   FOOTER
   ========================================================================== */
.site-footer {
  padding: 28px 8.2% 42px;
  display: flex;
  justify-content: space-between;
  gap: 18px;
  color: #6f6f6f;
  font-size: 0.58rem;
  border-top: 1px solid var(--line);
  position: relative;
  z-index: 2;
}

.footer-dot {
  color: #aaa;
  margin-left: 5px;
}

/* ==========================================================================
   MOTION REVEAL SYSTEM
   ========================================================================== */
.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity var(--dur-reveal) var(--ease-standard), transform var(--dur-reveal) var(--ease-standard);
  will-change: transform, opacity;
}

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

.hero-orb-wrap.reveal {
  transform: translateY(20px) scale(0.985);
}

.hero-orb-wrap.reveal.is-visible {
  transform: translateY(0) scale(1);
}

/* Stagger Delays */
.project-card.reveal:nth-child(2),
.skills-list.reveal {
  transition-delay: 0.08s;
}

.project-card.reveal:nth-child(3) {
  transition-delay: 0.14s;
}

.project-card.reveal:nth-child(4) {
  transition-delay: 0.2s;
}

.project-card.reveal:nth-child(5) {
  transition-delay: 0.26s;
}

/* ==========================================================================
   RESPONSIVE DESIGN (1500px, 900px, 620px)
   ========================================================================== */
@media (min-width: 1500px) {
  .hero {
    max-height: 1100px;
  }
  .hero-name {
    font-size: clamp(15rem, 18vw, 19rem);
  }
}

@media (max-width: 900px) {
  .hero {
    min-height: 850px;
    padding-top: 150px;
  }
  .hero-name {
    font-size: clamp(6rem, 18vw, 11rem);
  }
  .hero-role {
    top: calc(100% + 14px);
    right: 3%;
    font-size: 0.65rem;
  }
  .hero-orb-wrap {
    width: clamp(180px, 25vw, 250px);
    right: 4.5%;
    top: 140px;
    left: auto;
    bottom: auto;
  }
  .hero-statement {
    margin-top: 85px;
  }
  .section-pad {
    padding: 100px 6%;
  }
  .intro-grid,
  .contact-grid {
    grid-template-columns: 1fr;
    gap: 36px;
  }
  .contact-visual-card {
    max-width: 400px;
    margin: 0 auto;
  }
  .contact-visual-frame {
    aspect-ratio: 4 / 3;
  }
  .skills-constellation-wrap {
    margin-top: 32px;
  }
  .skills-visual-frame {
    aspect-ratio: 16 / 10;
    max-height: 320px;
  }
  .project-preview-frame {
    aspect-ratio: 16 / 10;
  }
  .section-kicker {
    margin-bottom: 48px;
  }
  .skills-heading-row,
  .projects-heading-row {
    align-items: flex-start;
    flex-direction: column;
    gap: 22px;
  }
  .education-grid,
  .certifications-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 620px) {
  .page-frame {
    inset: 4px;
  }
  .scroll-progress-bar {
    top: 4px;
    left: 4px;
    right: 4px;
  }
  .site-header {
    height: 70px;
    padding: 0 7%;
    top: 4px;
    left: 4px;
    right: 4px;
  }
  .brand {
    font-size: 1.25rem;
  }
  .header-contact {
    margin-left: auto;
    font-size: 0.58rem;
    padding: 6px 10px;
  }
  .menu-toggle {
    display: block;
    margin-left: 8px;
  }
  .main-nav {
    display: none;
    position: absolute;
    top: 69px;
    left: 0;
    right: 0;
    padding: 22px 7%;
    background: #0b0b0b;
    border-bottom: 1px solid var(--line);
    flex-direction: column;
    gap: 20px;
  }
  .main-nav.open {
    display: flex;
  }
  .hero {
    min-height: 790px;
    padding: 145px 7% 70px;
    justify-content: flex-start;
  }
  .hero-index {
    top: 105px;
    left: 7%;
    right: 7%;
    font-size: 0.5rem;
  }
  .hero-index span {
    max-width: 125px;
    text-align: right;
  }
  .hero-name {
    font-size: clamp(4.3rem, 17.5vw, 7.5rem);
    line-height: 0.82;
    letter-spacing: -0.1em;
    margin-top: 75px;
  }
  .name-last {
    margin-right: 13%;
    margin-top: 0.23em;
  }
  .hero-role {
    top: calc(100% + 12px);
    right: 0;
    gap: 10px;
    font-size: 0.53rem;
    line-height: 1.8;
  }
  .hero-statement {
    font-size: 0.95rem;
    margin-top: 145px;
    max-width: 260px;
  }
  .hero-orb-wrap {
    width: min(24vw, 95px);
    right: 7%;
    top: 135px;
    left: auto;
    bottom: auto;
    opacity: 0.85;
  }
  .hero-bottom {
    left: 7%;
    right: 7%;
    bottom: 24px;
    font-size: 0.5rem;
  }
  .scroll-cue {
    gap: 9px;
  }
  .scroll-line {
    height: 23px;
  }
  .section-pad {
    padding: 78px 7%;
  }
  .section-kicker {
    font-size: 0.58rem;
    margin-bottom: 38px;
  }
  .section-heading {
    font-size: clamp(2.6rem, 12vw, 4.7rem);
  }
  .intro-copy {
    font-size: 0.94rem;
  }
  .skills-list {
    grid-template-columns: 1fr 1fr;
    margin-top: 42px;
  }
  .skills-list li {
    font-size: 0.84rem;
    padding: 17px 5px 17px 0;
  }
  .skills-list li:before {
    margin-right: 8px;
  }
  .projects-grid {
    grid-template-columns: 1fr;
  }
  .project-card {
    min-height: 245px;
    padding: 25px;
  }
  .project-card h3 {
    margin-top: 20px;
  }
  .project-preview-frame {
    aspect-ratio: 16 / 8;
    margin-bottom: 16px;
  }
  .contact-heading {
    font-size: clamp(3.4rem, 15vw, 6rem);
  }
  .contact-visual-card {
    max-width: 280px;
  }
  .contact-visual-frame {
    aspect-ratio: 1 / 1;
  }
  .skills-visual-frame {
    aspect-ratio: 4 / 3;
    max-height: 260px;
  }
  .contact-form-wrap {
    margin-top: 52px;
    padding: 22px 18px;
  }
  .form-control {
    font-size: 16px;
  }
  .contact-form-heading {
    margin-bottom: 26px;
  }
  .site-footer {
    padding: 25px 7% 35px;
    flex-wrap: wrap;
    font-size: 0.5rem;
  }
  .site-footer span:nth-child(2) {
    display: none;
  }
}

/* ==========================================================================
   ACCESSIBILITY: REDUCED MOTION PREFERENCE
   ========================================================================== */
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  .reveal {
    opacity: 1 !important;
    transform: none !important;
  }
  .scroll-line {
    animation: none !important;
  }
  .fallback-ring-outer {
    animation: none !important;
  }
  .cursor-spotlight {
    display: none !important;
  }
}