/* ===========================
   RUDRA POTGHAN — MAIN CSS
   Theme: Dark Hacker / Terminal
=========================== */

:root {
  /* Bhairav Fire Palette */
  --bg:        #0e0a08;   /* deep ash black */
  --bg2:       #160f0a;   /* scorched earth */
  --bg3:       #1e1410;   /* dark ember */
  --bg4:       #251a12;   /* warm dark brown */

  --accent:    #e8620a;   /* Bhairav fire orange */
  --accent2:   #c4341a;   /* deep crimson red (glowing eyes) */
  --accent3:   #f0a830;   /* molten amber */
  --accent4:   #8b3a10;   /* dark burnt sienna */

  --skull:     #c8a882;   /* skull/bone beige */
  --skull-dim: #7a6248;   /* aged bone */

  --text:      #f0e8d8;   /* warm parchment */
  --text-dim:  #9a7a5a;   /* muted ember */
  --text-dimmer: #4a3828; /* deep shadow */

  --border:    rgba(232,98,10,0.15);
  --border2:   rgba(196,52,26,0.12);
  --glow:      rgba(232,98,10,0.25);
  --glow-red:  rgba(196,52,26,0.3);

  --font-display: 'Bebas Neue', sans-serif;
  --font-mono: 'Space Mono', monospace;
  --font-body: 'Inter', sans-serif;
  --nav-h: 60px;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.7;
  overflow-x: hidden;
}

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

ul { list-style: none; }

.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 32px;
}

/* ---- NAV ---- */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: var(--nav-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 32px;
  z-index: 100;
  background: rgba(8,12,15,0.85);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  transition: box-shadow .3s;
}

.nav-logo {
  font-family: var(--font-display);
  font-size: 1.6rem;
  color: var(--accent3);
  letter-spacing: 4px;
  transition: opacity .2s;
}
.nav-logo:hover { opacity: .7; }

.nav-links {
  display: flex;
  gap: 36px;
  align-items: center;
}
.nav-links a {
  font-family: var(--font-mono);
  font-size: .78rem;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--text-dim);
  transition: color .2s;
  position: relative;
}
.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -4px; left: 0; right: 0;
  height: 1px;
  background: var(--accent);
  transform: scaleX(0);
  transition: transform .2s;
  transform-origin: left;
}
.nav-links a:hover,
.nav-links a.active { color: var(--accent3); }
.nav-links a:hover::after,
.nav-links a.active::after { transform: scaleX(1); background: var(--accent3); }

.nav-hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}
.nav-hamburger span {
  display: block;
  width: 24px; height: 2px;
  background: var(--text);
  transition: .3s;
}

/* ---- SECTION SHARED ---- */
section {
  padding: 100px 0;
}

.section-label {
  font-family: var(--font-mono);
  font-size: .72rem;
  letter-spacing: 4px;
  color: var(--accent3);
  margin-bottom: 16px;
  text-transform: uppercase;
}

.section-title {
  font-family: var(--font-display);
  font-size: clamp(2.5rem, 5vw, 4rem);
  letter-spacing: 4px;
  text-transform: uppercase;
  margin-bottom: 60px;
  color: var(--text);
}

/* ---- SKILL PILLS ---- */
.skill-pills {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 10px;
}
.skill-pills span {
  font-family: var(--font-mono);
  font-size: .7rem;
  padding: 4px 12px;
  border: 1px solid var(--border);
  border-radius: 2px;
  color: var(--text-dim);
  background: rgba(0,255,157,0.04);
  letter-spacing: 1px;
  transition: all .2s;
}
.skill-pills span:hover {
  border-color: var(--accent);
  color: var(--accent3);
  background: rgba(232,98,10,0.1);
}

/* ---- PROJECT TAGS ---- */
.project-tags {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-top: 14px;
}
.project-tags span {
  font-family: var(--font-mono);
  font-size: .65rem;
  letter-spacing: 1px;
  padding: 3px 10px;
  border: 1px solid rgba(196,52,26,.25);
  color: var(--accent3);
  border-radius: 2px;
}

/* ---- BUTTONS ---- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 12px 28px;
  font-family: var(--font-mono);
  font-size: .78rem;
  letter-spacing: 2px;
  text-transform: uppercase;
  border: 1px solid var(--accent);
  color: var(--accent3);
  background: transparent;
  cursor: pointer;
  transition: all .25s;
  border-radius: 2px;
}
.btn:hover {
  background: var(--accent);
  color: var(--bg);
}
.btn-solid {
  background: var(--accent);
  color: var(--bg);
}
.btn-solid:hover {
  background: transparent;
  color: var(--accent3);
}
.btn-danger {
  border-color: var(--accent2);
  color: var(--accent2);
}
.btn-danger:hover {
  background: var(--accent2);
  color: #fff;
}

/* ---- FORM ELEMENTS ---- */
input, textarea, select {
  width: 100%;
  background: var(--bg3);
  border: 1px solid var(--border);
  color: var(--text);
  padding: 12px 16px;
  font-family: var(--font-body);
  font-size: .9rem;
  border-radius: 2px;
  outline: none;
  transition: border-color .2s;
}
input:focus, textarea:focus, select:focus {
  border-color: var(--accent);
}
input::placeholder, textarea::placeholder {
  color: var(--text-dimmer);
}
label {
  display: block;
  font-family: var(--font-mono);
  font-size: .72rem;
  letter-spacing: 2px;
  color: var(--text-dim);
  margin-bottom: 8px;
  text-transform: uppercase;
}
.form-group {
  margin-bottom: 20px;
}

/* ---- SCROLLBAR ---- */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--bg); }
::-webkit-scrollbar-thumb { background: var(--accent4); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--accent); }

/* ---- FOOTER ---- */
.footer {
  text-align: center;
  padding: 32px;
  font-family: var(--font-mono);
  font-size: .72rem;
  color: var(--text-dimmer);
  border-top: 1px solid var(--border);
  letter-spacing: 2px;
}

/* ---- MODAL OVERLAY ---- */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,.88);
  backdrop-filter: blur(8px);
  z-index: 999;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  transition: opacity .3s;
}
.modal-overlay.open {
  opacity: 1;
  pointer-events: all;
}
.modal {
  background: var(--bg2);
  border: 1px solid var(--border);
  border-top: 2px solid var(--accent);
  border-radius: 4px;
  padding: 40px;
  max-width: 560px;
  width: 92%;
  position: relative;
  transform: translateY(20px);
  transition: transform .3s;
  max-height: 90vh;
  overflow-y: auto;
}
.modal-overlay.open .modal {
  transform: translateY(0);
}
.modal-close {
  position: absolute;
  top: 16px; right: 20px;
  background: none;
  border: none;
  color: var(--text-dim);
  font-size: 1.4rem;
  cursor: pointer;
  line-height: 1;
  transition: color .2s;
}
.modal-close:hover { color: var(--accent2); }
.modal h2 {
  font-family: var(--font-display);
  letter-spacing: 3px;
  font-size: 1.8rem;
  margin-bottom: 24px;
  color: var(--accent3);
}

/* ---- PAGE HEADER ---- */
.page-header {
  padding: 120px 0 60px;
  border-bottom: 1px solid var(--border);
  background: linear-gradient(180deg, rgba(232,98,10,0.04) 0%, transparent 100%);
}
.page-header h1 {
  font-family: var(--font-display);
  font-size: clamp(3rem, 8vw, 6rem);
  letter-spacing: 6px;
  text-transform: uppercase;
  color: var(--text);
}
.page-header .page-header-sub {
  font-family: var(--font-mono);
  font-size: .8rem;
  color: var(--text-dim);
  margin-top: 12px;
  letter-spacing: 2px;
}

/* ---- TOAST ---- */
.toast {
  position: fixed;
  bottom: 32px; right: 32px;
  background: var(--bg2);
  border: 1px solid var(--accent);
  color: var(--accent3);
  font-family: var(--font-mono);
  font-size: .8rem;
  letter-spacing: 1px;
  padding: 14px 24px;
  border-radius: 3px;
  z-index: 9999;
  transform: translateY(20px);
  opacity: 0;
  transition: all .3s;
}
.toast.show {
  transform: translateY(0);
  opacity: 1;
}
.toast.error {
  border-color: var(--accent2);
  color: var(--accent2);
}

/* ---- FILE UPLOAD ZONE ---- */
.file-drop-zone {
  border: 2px dashed var(--border);
  border-radius: 4px;
  padding: 24px;
  text-align: center;
  cursor: pointer;
  transition: all .25s;
  background: var(--bg3);
  position: relative;
}
.file-drop-zone:hover,
.file-drop-zone.drag-over {
  border-color: var(--accent);
  background: rgba(232,98,10,0.06);
}
.file-drop-zone input[type="file"] {
  position: absolute;
  inset: 0;
  opacity: 0;
  cursor: pointer;
  width: 100%;
  height: 100%;
  padding: 0;
  border: none;
  background: none;
}
.file-drop-icon {
  font-size: 2rem;
  margin-bottom: 8px;
  display: block;
}
.file-drop-text {
  font-family: var(--font-mono);
  font-size: .72rem;
  letter-spacing: 2px;
  color: var(--text-dim);
  text-transform: uppercase;
}
.file-drop-sub {
  font-size: .68rem;
  color: var(--text-dimmer);
  font-family: var(--font-mono);
  margin-top: 6px;
  letter-spacing: 1px;
}
.file-preview {
  margin-top: 12px;
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 14px;
  background: var(--bg4);
  border: 1px solid var(--border);
  border-radius: 3px;
}
.file-preview-thumb {
  width: 40px;
  height: 40px;
  object-fit: cover;
  border-radius: 2px;
  border: 1px solid var(--border);
}
.file-preview-icon {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(232,98,10,0.12);
  border: 1px solid var(--border);
  border-radius: 2px;
  font-size: 1.2rem;
}
.file-preview-info {
  flex: 1;
  min-width: 0;
}
.file-preview-name {
  font-family: var(--font-mono);
  font-size: .72rem;
  color: var(--text);
  letter-spacing: 1px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.file-preview-size {
  font-family: var(--font-mono);
  font-size: .62rem;
  color: var(--text-dimmer);
  margin-top: 3px;
}
.file-preview-remove {
  background: none;
  border: none;
  color: var(--text-dimmer);
  cursor: pointer;
  font-size: 1rem;
  padding: 4px;
  transition: color .2s;
  flex-shrink: 0;
}
.file-preview-remove:hover { color: var(--accent2); }

/* ---- MOBILE ---- */
@media (max-width: 768px) {
  .nav-hamburger { display: flex; }
  .nav-links {
    position: fixed;
    top: var(--nav-h); left: 0; right: 0;
    background: var(--bg2);
    flex-direction: column;
    padding: 24px 32px;
    gap: 20px;
    border-bottom: 1px solid var(--border);
    transform: translateY(-100%);
    opacity: 0;
    pointer-events: none;
    transition: all .3s;
    z-index: 99;
  }
  .nav-links.open {
    transform: translateY(0);
    opacity: 1;
    pointer-events: all;
  }
  section { padding: 70px 0; }
}