/* ==========================================================================
   PORTFOLIO STYLESHEET — Sameer
   ========================================================================== */

/* --------------------------------------------------------------------------
   1. DESIGN TOKENS & CSS VARIABLES (THEMING)
   -------------------------------------------------------------------------- */
:root {
  color-scheme: dark;

  /* Primary Palette (Dark Mode - Default) */
  --bg: #121210;            /* Warm charcoal / deep espresso background */
  --surface: #1A1C18;       /* Elevated cards / drawers */
  --line: #2E3029;          /* Subtle structural borders */
  --accent: #8A9A5B;        /* Sage / moss green accent */
  --badge: #E0A96D;         /* Warm honey / amber for tech badges */
  --text: #E6DEC8;          /* Warm cream / parchment typography */
  --muted: #9C998E;         /* Secondary muted text */
  --btn: #E6DEC8;           /* Primary button background */
  --btn-text: #121210;      /* Primary button text */

  /* Inverted band section (Projects) */
  --band-bg: var(--surface);
  --band-card: var(--bg);
  --band-line: var(--line);
  --band-text: var(--text);
  --band-muted: var(--muted);
  --band-accent: var(--accent);
  --band-badge: #E0A96D;

  /* Typography Stacks (Tech Engineer Scheme) */
  --display: "Plus Jakarta Sans", system-ui, -apple-system, sans-serif;
  --serif: var(--display); /* Alias for headings */
  --sans: "Inter", system-ui, -apple-system, sans-serif;
  --mono: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, monospace;

  box-sizing: border-box;
  padding-top: env(safe-area-inset-top, 0px);
  padding-bottom: env(safe-area-inset-bottom, 0px);
}

/* Light Theme Overrides */
:root[data-theme="light"] {
  color-scheme: light;

  --bg: #EFE9DA;            /* Soft warm parchment */
  --surface: #F7F3E8;       /* Clean ivory surface */
  --line: #D6CEB8;          /* Warm stone border */
  --accent: #5F6B3A;        /* Deep olive accent */
  --badge: #9A622A;         /* Rich amber for tech badges */
  --text: #2A3022;          /* Forest charcoal typography */
  --muted: #686855;         /* Muted olive gray */
  --btn: #2A3022;
  --btn-text: #EFE9DA;

  /* Projects band remains a contrast block in light mode */
  --band-bg: #262D20;
  --band-card: #2F3828;
  --band-line: #3E4833;
  --band-text: #EFE9DA;
  --band-muted: #B3AE98;
  --band-accent: #B9C48A;
  --band-badge: #E5B888;
}

/* --------------------------------------------------------------------------
   2. RESET & BASE STYLES
   -------------------------------------------------------------------------- */
*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-padding-top: env(safe-area-inset-top, 0px);
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background-color: var(--bg);
  color: var(--text);
  font-family: var(--sans);
  font-size: 1.0625rem;
  line-height: 1.65;
  transition: background-color 0.35s ease, color 0.35s ease;
  -webkit-font-smoothing: antialiased;
}

a {
  color: inherit;
}

:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
  border-radius: 4px;
}

/* --------------------------------------------------------------------------
   3. LAYOUT & CONTAINERS
   -------------------------------------------------------------------------- */
.wrap {
  max-width: 68rem; /* 1088px max page content width */
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* --------------------------------------------------------------------------
   4. NAVIGATION & THEME TOGGLE
   -------------------------------------------------------------------------- */
nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  padding: 1.5rem 0;
}

nav .brand {
  font-family: var(--display);
  font-size: 1.25rem;
  text-decoration: none;
  font-weight: 600;
  letter-spacing: -0.02em;
}

nav ul {
  display: flex;
  gap: 1.75rem;
  list-style: none;
  margin: 0;
  padding: 0;
}

nav ul a {
  color: var(--muted);
  text-decoration: none;
  font-size: 0.95rem;
  transition: color 0.2s ease;
}

nav ul a:hover {
  color: var(--text);
}

.mode {
  width: 2.4rem;
  height: 2.4rem;
  flex: none;
  border-radius: 50%;
  border: 1px solid var(--line);
  background: transparent;
  cursor: pointer;
  display: grid;
  place-items: center;
  transition: border-color 0.2s ease;
}

.mode:hover {
  border-color: var(--accent);
}

.mode i {
  width: 1rem;
  height: 1rem;
  border-radius: 50%;
  border: 1.5px solid var(--text);
  background: linear-gradient(90deg, var(--text) 50%, transparent 50%);
}

/* --------------------------------------------------------------------------
   5. HERO SECTION & PORTRAIT
   -------------------------------------------------------------------------- */
.hero {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 3rem;
  align-items: center;
  min-height: min(38rem, calc(100svh - 6rem));
  padding: 3rem 0;
}

.hero-text {
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.hero h1 {
  font-family: var(--display);
  font-weight: 600;
  font-size: clamp(2.4rem, 4.5vw, 4rem);
  line-height: 1.1;
  letter-spacing: -0.03em;
  margin: 0 0 1.5rem;
}

.hero p {
  color: var(--muted);
  max-width: 32rem;
  margin: 0 0 2rem;
}

.actions {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

/* Common Button Styles */
.btn {
  display: inline-block;
  padding: 0.8rem 1.5rem;
  border-radius: 999px;
  background-color: var(--btn);
  color: var(--btn-text);
  text-decoration: none;
  font-family: var(--sans);
  font-weight: 500;
  font-size: 1rem;
  border: none;
  cursor: pointer;
  transition: opacity 0.2s ease, border-color 0.2s ease;
}

.btn:hover {
  opacity: 0.88;
}

.btn.ghost {
  background-color: transparent;
  color: var(--text);
  border: 1px solid var(--line);
}

.btn.ghost:hover {
  border-color: var(--accent);
  opacity: 1;
}

/* Portrait Card */
.photo {
  position: relative;
  width: 100%;
  max-width: 22rem;
  aspect-ratio: 3 / 4;
  margin-left: auto;
  border-radius: 1.25rem;
  overflow: hidden;
  border: 1px solid var(--line);
  background-color: var(--surface);
  box-shadow: 0 12px 36px rgba(0, 0, 0, 0.22);
}

.photo img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  display: block;
}

/* --------------------------------------------------------------------------
   6. SECTION COMMONS
   -------------------------------------------------------------------------- */
section {
  padding: 4.5rem 0;
  border-top: 1px solid var(--line);
}

h2 {
  font-family: var(--display);
  font-weight: 600;
  font-size: clamp(1.8rem, 3.5vw, 2.3rem);
  letter-spacing: -0.02em;
  margin: 0 0 2rem;
}

/* --------------------------------------------------------------------------
   7. ABOUT SECTION & TOOLS MATRIX
   -------------------------------------------------------------------------- */
.about {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
}

.about p {
  margin: 0 0 1rem;
  max-width: 36rem;
}

.about .stack {
  color: var(--muted);
  font-size: 0.95rem;
}

/* Tech Badges / Pills */
.about .stack span {
  display: inline-block;
  margin: 0 0.4rem 0.4rem 0;
  padding: 0.25rem 0.8rem;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--badge);
  font-family: var(--mono, var(--sans));
  font-size: 0.9rem;
  transition: border-color 0.2s ease, background-color 0.2s ease;
}

.about .stack span:hover {
  border-color: var(--badge);
  background-color: var(--surface);
}

/* Tools & Technologies Subsection */
.tools-section {
  margin-top: 2rem;
  padding-top: 1.75rem;
  border-top: 1px solid var(--line);
}

.tools-section h3 {
  font-family: var(--display);
  font-weight: 600;
  font-size: 1.35rem;
  letter-spacing: -0.01em;
  margin: 0 0 1.25rem;
  color: var(--text);
}

.tools-grid {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

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

.tool-cat-title {
  font-size: 0.82rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--muted);
  font-weight: 500;
}

/* --------------------------------------------------------------------------
   8. PROJECTS SECTION & CAROUSEL SLIDER
   -------------------------------------------------------------------------- */
.band {
  background-color: var(--band-bg);
  color: var(--band-text);
  transition: background-color 0.35s ease, color 0.35s ease;
}

.band section {
  border-top: 0;
}

.projects-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 2rem;
}

.projects-head h2 {
  margin: 0;
}

/* Slider Arrow Buttons */
.slider-controls {
  display: flex;
  gap: 0.75rem;
}

.slide-btn {
  width: 2.6rem;
  height: 2.6rem;
  border-radius: 50%;
  border: 1px solid var(--band-line);
  background-color: var(--band-card);
  color: var(--band-text);
  cursor: pointer;
  display: grid;
  place-items: center;
  transition: border-color 0.2s ease, background-color 0.2s ease, opacity 0.2s ease;
}

.slide-btn:hover:not(:disabled) {
  border-color: var(--band-accent);
  background-color: var(--band-line);
}

.slide-btn:disabled {
  opacity: 0.35;
  cursor: not-allowed;
}

/* Slider Track (CSS Scroll Snap) */
.slider-container {
  position: relative;
}

.slider-track {
  display: flex;
  gap: 1.25rem;
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  scroll-behavior: smooth;
  scrollbar-width: none;
  -webkit-overflow-scrolling: touch;
  padding-bottom: 1rem;
  margin-bottom: -1rem;
}

.slider-track::-webkit-scrollbar {
  display: none;
}

/* Project Cards */

#iterate{
  object-fit: contain;
  width:100%;
}



.slider-track .card {
  flex: 0 0 calc((100% - 2.5rem) / 3); /* 3 cards visible on desktop */
  min-width: 17.5rem;
  scroll-snap-align: start;
}

.card {
  background-color: var(--band-card);
  border: 1px solid var(--band-line);
  border-radius: 1rem;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: border-color 0.2s ease;
}

.card:hover {
  border-color: var(--band-accent);
}

.shot {
  aspect-ratio: 16 / 10;
  background-color: var(--band-line);
  background-size: cover;
  background-position: center;
  display: grid;
  place-items: center;
  color: var(--band-muted);
  font-family: var(--serif);
  font-style: italic;
  font-weight: 300;
}

.card-body {
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 0.7rem;
  flex: 1;
}

.card h3 {
  font-family: var(--display);
  font-weight: 600;
  font-size: 1.35rem;
  letter-spacing: -0.01em;
  margin: 0;
}

.card p {
  margin: 0;
  color: var(--band-muted);
  font-size: 0.98rem;
  flex: 1;
}

.card .tags {
  font-size: 0.88rem;
  color: var(--band-badge);
  font-family: var(--mono, var(--sans));
}

.card a {
  font-size: 0.95rem;
  color: var(--band-text);
  text-decoration-color: var(--band-accent);
  text-underline-offset: 4px;
}

/* --------------------------------------------------------------------------
   9. CERTIFICATES & CREDENTIALS SECTION (EDITORIAL LIST)
   -------------------------------------------------------------------------- */
.certificates .section-head {
  margin-bottom: 2rem;
}

.certificates .section-head h2 {
  margin: 0 0 0.5rem;
}

.section-sub {
  color: var(--muted);
  margin: 0;
  max-width: 32rem;
  font-size: 0.98rem;
}

.cert-list {
  display: flex;
  flex-direction: column;
  border-top: 1px solid var(--line);
}

.cert-item {
  display: grid;
  grid-template-columns: 12rem 1fr auto;
  gap: 2rem;
  align-items: center;
  padding: 1.5rem 0;
  border-bottom: 1px solid var(--line);
  transition: border-color 0.2s ease;
}

.cert-item:hover {
  border-bottom-color: var(--badge);
}

.cert-meta {
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
}

.cert-issuer {
  font-weight: 500;
  color: var(--text);
  font-size: 0.95rem;
}

.cert-year {
  font-family: var(--mono);
  color: var(--muted);
  font-size: 0.82rem;
}

.cert-main {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.cert-title {
  font-family: var(--display);
  font-weight: 600;
  font-size: 1.125rem;
  color: var(--text);
  margin: 0;
  letter-spacing: -0.01em;
}

.cert-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
}

.cert-tags span {
  font-family: var(--mono);
  font-size: 0.78rem;
  color: var(--badge);
}

.cert-tags span:not(:last-child)::after {
  content: "·";
  margin-left: 0.35rem;
  color: var(--muted);
}

.cert-action {
  display: flex;
  align-items: center;
}

.cert-link {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  font-family: var(--sans);
  font-size: 0.88rem;
  font-weight: 500;
  color: var(--muted);
  text-decoration: none;
  padding: 0.4rem 0.85rem;
  border: 1px solid var(--line);
  border-radius: 999px;
  transition: all 0.2s ease;
  white-space: nowrap;
}

.cert-link:hover {
  color: var(--text);
  border-color: var(--badge);
  background-color: var(--surface);
}

.cert-link svg {
  transition: transform 0.2s ease;
}

.cert-link:hover svg {
  transform: translate(2px, -2px);
}

/* --------------------------------------------------------------------------
   10. CONTACT SECTION & FOOTER
   -------------------------------------------------------------------------- */
.contact p {
  color: var(--muted);
  max-width: 30rem;
  margin: 0 0 1.75rem;
}

footer {
  padding: 2.5rem 0;
  color: var(--muted);
  font-size: 0.9rem;
  border-top: 1px solid var(--line);
}

/* --------------------------------------------------------------------------
   10. PULL-UP EMAIL DRAWER (BOTTOM SHEET)
   -------------------------------------------------------------------------- */
.email-drawer {
  position: fixed;
  inset: 0;
  z-index: 999;
  display: flex;
  align-items: flex-end;
  justify-content: center;
  pointer-events: none;
  visibility: hidden;
  transition: visibility 0.3s ease;
}

.email-drawer.open {
  pointer-events: auto;
  visibility: visible;
}

.drawer-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.65);
  backdrop-filter: blur(5px);
  -webkit-backdrop-filter: blur(5px);
  opacity: 0;
  transition: opacity 0.3s ease;
}

.email-drawer.open .drawer-backdrop {
  opacity: 1;
}

.drawer-panel {
  position: relative;
  width: 100%;
  max-width: 38rem;
  background-color: var(--surface);
  border: 1px solid var(--line);
  border-bottom: none;
  border-radius: 1.5rem 1.5rem 0 0;
  padding: 2.2rem 2.2rem 2.5rem;
  box-shadow: 0 -10px 40px rgba(0, 0, 0, 0.4);
  transform: translateY(100%);
  transition: transform 0.35s cubic-bezier(0.16, 1, 0.3, 1);
  color: var(--text);
  max-height: 90vh;
  overflow-y: auto;
}

.email-drawer.open .drawer-panel {
  transform: translateY(0);
}

.drawer-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.drawer-header h3 {
  font-family: var(--display);
  font-size: 1.5rem;
  font-weight: 600;
  letter-spacing: -0.02em;
  margin: 0 0 0.3rem;
}

.drawer-header p {
  margin: 0;
  color: var(--muted);
  font-size: 0.92rem;
}

.drawer-close {
  background: transparent;
  border: 1px solid var(--line);
  border-radius: 50%;
  width: 2.2rem;
  height: 2.2rem;
  color: var(--text);
  font-size: 1.4rem;
  line-height: 1;
  cursor: pointer;
  display: grid;
  place-items: center;
  transition: border-color 0.2s ease, color 0.2s ease;
}

.drawer-close:hover {
  border-color: var(--accent);
}

.drawer-form {
  display: flex;
  flex-direction: column;
  gap: 1.1rem;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.form-group label {
  font-size: 0.85rem;
  color: var(--muted);
  font-weight: 500;
}

.form-group input,
.form-group textarea {
  background-color: var(--bg);
  border: 1px solid var(--line);
  border-radius: 0.6rem;
  padding: 0.75rem 1rem;
  color: var(--text);
  font-family: var(--sans);
  font-size: 0.95rem;
  transition: border-color 0.2s ease;
  outline: none;
}

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

.form-actions {
  display: flex;
  align-items: center;
  gap: 1.25rem;
  margin-top: 0.5rem;
  flex-wrap: wrap;
}

.form-status {
  font-size: 0.9rem;
  color: var(--badge);
  font-weight: 500;
}

/* --------------------------------------------------------------------------
   11. MEDIA QUERIES & RESPONSIVENESS
   -------------------------------------------------------------------------- */
@media (max-width: 960px) {
  .slider-track .card {
    flex: 0 0 calc((100% - 1.25rem) / 2); /* 2 cards visible on tablet */
    min-width: 16rem;
  }
}

@media (max-width: 760px) {
  .hero,
  .about {
    grid-template-columns: 1fr;
    gap: 2.5rem;
  }

  .hero {
    padding: 2rem 0;
    min-height: 0;
  }

  .hero-text {
    padding: 0;
  }

  .photo {
    aspect-ratio: 3 / 4;
    max-width: 18rem;
    margin: 0 auto;
  }

  nav ul {
    gap: 1.1rem;
  }

  .cert-item {
    grid-template-columns: 1fr;
    gap: 0.75rem;
    padding: 1.25rem 0;
  }

  .cert-meta {
    flex-direction: row;
    justify-content: space-between;
    align-items: baseline;
  }

  .cert-action {
    margin-top: 0.35rem;
  }
}

@media (max-width: 640px) {
  .slider-track .card {
    flex: 0 0 85%; /* 1 card + peek of next card on mobile */
    min-width: 15rem;
  }

  .form-row {
    grid-template-columns: 1fr;
  }

  .drawer-panel {
    padding: 1.5rem 1.25rem 2rem;
  }
}

/* --------------------------------------------------------------------------
   12. ACCESSIBILITY PREFERENCES
   -------------------------------------------------------------------------- */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    transition: none !important;
    scroll-behavior: auto !important;
  }
}