/* ============================================================
   DISKWEB INTERNSHIP REGISTRATION FORM
   Premium Glassmorphism Dark Theme
   ============================================================ */

:root {
  --color-bg-deep: #0a0e1a;
  --color-bg-mid: #131a2e;
  --color-accent-1: #6366f1;   /* indigo */
  --color-accent-2: #06b6d4;   /* cyan */
  --color-accent-3: #f59e0b;   /* amber - fee highlight */
  --color-text-primary: #f1f5f9;
  --color-text-secondary: #94a3b8;
  --color-text-muted: #64748b;
  --color-success: #22c55e;
  --color-error: #ef4444;
  --color-glass-bg: rgba(255, 255, 255, 0.06);
  --color-glass-border: rgba(255, 255, 255, 0.14);
  --color-input-bg: rgba(255, 255, 255, 0.05);
  --shadow-glow: 0 8px 32px rgba(99, 102, 241, 0.25);
  --radius-lg: 24px;
  --radius-md: 14px;
  --radius-sm: 10px;
  --font-display: 'Poppins', 'Segoe UI', sans-serif;
  --font-body: 'Inter', 'Segoe UI', sans-serif;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-body);
  background: var(--color-bg-deep);
  color: var(--color-text-primary);
  min-height: 100vh;
  line-height: 1.5;
  font-size: 16px;
  overflow-x: hidden;
  position: relative;
}

/* ---------------- Animated Background ---------------- */
.bg-gradient {
  position: fixed;
  inset: 0;
  z-index: -2;
  background: radial-gradient(circle at 20% 20%, rgba(99, 102, 241, 0.18), transparent 50%),
              radial-gradient(circle at 80% 0%, rgba(6, 182, 212, 0.15), transparent 50%),
              radial-gradient(circle at 50% 100%, rgba(99, 102, 241, 0.12), transparent 50%),
              linear-gradient(180deg, var(--color-bg-deep) 0%, var(--color-bg-mid) 100%);
}

.bg-orb {
  position: fixed;
  border-radius: 50%;
  filter: blur(80px);
  opacity: 0.35;
  z-index: -1;
  animation: float 16s ease-in-out infinite;
}

.bg-orb-1 {
  width: 380px;
  height: 380px;
  background: var(--color-accent-1);
  top: -100px;
  left: -120px;
  animation-delay: 0s;
}

.bg-orb-2 {
  width: 420px;
  height: 420px;
  background: var(--color-accent-2);
  bottom: -150px;
  right: -150px;
  animation-delay: -6s;
}

.bg-orb-3 {
  width: 280px;
  height: 280px;
  background: var(--color-accent-3);
  top: 40%;
  left: 50%;
  opacity: 0.12;
  animation-delay: -3s;
}

@keyframes float {
  0%, 100% { transform: translate(0, 0) scale(1); }
  50% { transform: translate(40px, -30px) scale(1.08); }
}

@media (prefers-reduced-motion: reduce) {
  .bg-orb { animation: none; }
  * { scroll-behavior: auto !important; }
}

/* ---------------- Container ---------------- */
.container {
  max-width: 1140px;
  margin: 0 auto;
  padding: 0 20px;
}

/* ---------------- Header ---------------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  backdrop-filter: blur(16px);
  background: rgba(10, 14, 26, 0.65);
  border-bottom: 1px solid var(--color-glass-border);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 20px;
  max-width: 1140px;
  margin: 0 auto;
}

.logo-area {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 18px;
  color: var(--color-text-primary);
  text-decoration: none;
}

.logo-area img {
  height: 38px;
  width: 38px;
  border-radius: 10px;
  object-fit: cover;
}

.header-cta {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 10px 18px;
  min-height: 44px;
  border-radius: 50px;
  font-size: 14px;
  font-weight: 600;
  color: #fff;
  background: linear-gradient(135deg, var(--color-accent-1), var(--color-accent-2));
  text-decoration: none;
  transition: transform 150ms ease, box-shadow 150ms ease;
  touch-action: manipulation;
}

.header-cta:hover,
.header-cta:focus-visible {
  transform: translateY(-2px);
  box-shadow: var(--shadow-glow);
}

.header-cta:focus-visible {
  outline: 2px solid var(--color-accent-2);
  outline-offset: 3px;
}

/* ---------------- Hero ---------------- */
.hero {
  text-align: center;
  padding: 56px 20px 32px;
}

.badge-pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 18px;
  border-radius: 50px;
  background: var(--color-glass-bg);
  border: 1px solid var(--color-glass-border);
  font-size: 13px;
  font-weight: 600;
  color: var(--color-accent-2);
  margin-bottom: 22px;
  letter-spacing: 0.3px;
}

.badge-pill svg {
  width: 16px;
  height: 16px;
  flex-shrink: 0;
}

.hero h1 {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(28px, 5vw, 48px);
  line-height: 1.2;
  margin-bottom: 16px;
  background: linear-gradient(135deg, #ffffff 30%, var(--color-accent-2) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero p {
  font-size: clamp(15px, 2vw, 18px);
  color: var(--color-text-secondary);
  max-width: 620px;
  margin: 0 auto 28px;
}

.fee-highlight {
  display: inline-flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 14px;
  padding: 16px 28px;
  border-radius: var(--radius-md);
  background: linear-gradient(135deg, rgba(245, 158, 11, 0.15), rgba(245, 158, 11, 0.05));
  border: 1px solid rgba(245, 158, 11, 0.35);
  margin-bottom: 14px;
}

.fee-highlight .fee-label {
  font-size: 14px;
  font-weight: 600;
  color: var(--color-text-primary);
}

.fee-highlight .fee-amount {
  font-family: var(--font-display);
  font-size: 22px;
  font-weight: 700;
  color: var(--color-accent-3);
}

.hero-tags {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 10px;
  margin-top: 18px;
  font-size: 13px;
  color: var(--color-text-secondary);
}

.hero-tags span {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 14px;
  border-radius: 50px;
  background: var(--color-glass-bg);
  border: 1px solid var(--color-glass-border);
}

/* ---------------- Certificate Carousel ---------------- */
.carousel-section {
  padding: 12px 0 44px;
}

.carousel-heading {
  text-align: center;
  font-family: var(--font-display);
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  color: var(--color-text-muted);
  margin-bottom: 18px;
}

.carousel-viewport {
  overflow: hidden;
  position: relative;
  mask-image: linear-gradient(90deg, transparent, #000 8%, #000 92%, transparent);
  -webkit-mask-image: linear-gradient(90deg, transparent, #000 8%, #000 92%, transparent);
}

.carousel-track {
  display: flex;
  gap: 22px;
  width: max-content;
  animation: scroll-left 28s linear infinite;
}

.carousel-track:hover {
  animation-play-state: paused;
}

@keyframes scroll-left {
  from { transform: translateX(0); }
  to { transform: translateX(-50%); }
}

@media (prefers-reduced-motion: reduce) {
  .carousel-track { animation: none; }
  .carousel-viewport { overflow-x: auto; }
}

.cert-card {
  flex: 0 0 auto;
  width: 230px;
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 1px solid var(--color-glass-border);
  background: var(--color-glass-bg);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.35);
}

.cert-card img {
  width: 100%;
  height: 160px;
  object-fit: cover;
  display: block;
  background: #1c2538;
}

.cert-card-label {
  padding: 10px 14px;
  font-size: 12px;
  color: var(--color-text-secondary);
  border-top: 1px solid var(--color-glass-border);
}

/* ---------------- Trust Badges ---------------- */
.trust-section {
  padding: 8px 0 44px;
  text-align: center;
}

.trust-badges {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 14px;
  margin-bottom: 18px;
}

.trust-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 18px;
  border-radius: 50px;
  background: var(--color-glass-bg);
  border: 1px solid var(--color-glass-border);
  font-size: 13px;
  font-weight: 600;
  color: var(--color-text-primary);
}

.trust-badge svg {
  width: 16px;
  height: 16px;
  color: var(--color-accent-2);
  flex-shrink: 0;
}

.trust-note {
  max-width: 640px;
  margin: 0 auto;
  font-size: 13px;
  color: var(--color-text-muted);
  line-height: 1.6;
}

/* ---------------- Form Section ---------------- */
.form-section {
  padding: 12px 0 64px;
}

.form-card {
  max-width: 680px;
  margin: 0 auto;
  background: var(--color-glass-bg);
  border: 1px solid var(--color-glass-border);
  border-radius: var(--radius-lg);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  box-shadow: var(--shadow-glow), 0 20px 60px rgba(0, 0, 0, 0.4);
  padding: 36px 28px;
}

@media (min-width: 640px) {
  .form-card {
    padding: 44px 48px;
  }
}

.form-card h2 {
  font-family: var(--font-display);
  font-size: clamp(22px, 3vw, 28px);
  font-weight: 700;
  margin-bottom: 6px;
  text-align: center;
}

.form-card .form-sub {
  text-align: center;
  color: var(--color-text-secondary);
  font-size: 14px;
  margin-bottom: 28px;
}

.form-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 18px;
}

@media (min-width: 640px) {
  .form-grid.two-col {
    grid-template-columns: 1fr 1fr;
  }
}

.field-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.field-group label {
  font-size: 13px;
  font-weight: 600;
  color: var(--color-text-secondary);
}

.field-group label .req {
  color: var(--color-error);
}

.field-group input[type="text"],
.field-group input[type="email"],
.field-group input[type="tel"],
.field-group select,
.field-group textarea {
  width: 100%;
  min-height: 48px;
  padding: 12px 16px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--color-glass-border);
  background: var(--color-input-bg);
  color: var(--color-text-primary);
  font-size: 15px;
  font-family: var(--font-body);
  transition: border-color 150ms ease, box-shadow 150ms ease;
}

.field-group textarea {
  min-height: 100px;
  resize: vertical;
}

.field-group input:focus-visible,
.field-group select:focus-visible,
.field-group textarea:focus-visible {
  outline: none;
  border-color: var(--color-accent-2);
  box-shadow: 0 0 0 3px rgba(6, 182, 212, 0.25);
}

.field-group select {
  cursor: pointer;
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%2394a3b8' stroke-width='2'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 14px center;
  padding-right: 40px;
}

.field-group select option {
  background: var(--color-bg-mid);
  color: var(--color-text-primary);
}

.field-hint {
  font-size: 12px;
  color: var(--color-text-muted);
}

.field-error {
  font-size: 12px;
  color: var(--color-error);
  display: none;
}

.field-error.show {
  display: block;
}

/* OTP row */
.otp-row {
  display: flex;
  gap: 10px;
  align-items: flex-end;
}

.otp-row .field-group {
  flex: 1;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 48px;
  padding: 12px 22px;
  border-radius: 50px;
  font-size: 14px;
  font-weight: 600;
  font-family: var(--font-body);
  border: none;
  cursor: pointer;
  white-space: nowrap;
  transition: transform 150ms ease, box-shadow 150ms ease, opacity 150ms ease;
  touch-action: manipulation;
}

.btn-primary {
  color: #fff;
  background: linear-gradient(135deg, var(--color-accent-1), var(--color-accent-2));
}

.btn-primary:hover:not(:disabled),
.btn-primary:focus-visible:not(:disabled) {
  transform: translateY(-2px);
  box-shadow: var(--shadow-glow);
}

.btn-secondary {
  color: var(--color-text-primary);
  background: var(--color-glass-bg);
  border: 1px solid var(--color-glass-border);
}

.btn-secondary:hover:not(:disabled),
.btn-secondary:focus-visible:not(:disabled) {
  background: rgba(255, 255, 255, 0.1);
}

.btn:disabled {
  opacity: 0.45;
  cursor: not-allowed;
  transform: none !important;
  box-shadow: none !important;
}

.btn:focus-visible {
  outline: 2px solid var(--color-accent-2);
  outline-offset: 3px;
}

.btn-block {
  width: 100%;
}

.btn .spinner {
  width: 16px;
  height: 16px;
  border: 2px solid rgba(255, 255, 255, 0.4);
  border-top-color: #fff;
  border-radius: 50%;
  animation: spin 700ms linear infinite;
  display: none;
}

.btn.loading .spinner {
  display: inline-block;
}

.btn.loading .btn-label {
  opacity: 0.85;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

/* Status messages (OTP feedback / form feedback) */
.status-msg {
  font-size: 13px;
  padding: 10px 14px;
  border-radius: var(--radius-sm);
  display: none;
  align-items: center;
  gap: 8px;
}

.status-msg.show {
  display: flex;
}

.status-msg.success {
  background: rgba(34, 197, 94, 0.12);
  border: 1px solid rgba(34, 197, 94, 0.35);
  color: #4ade80;
}

.status-msg.error {
  background: rgba(239, 68, 68, 0.12);
  border: 1px solid rgba(239, 68, 68, 0.35);
  color: #f87171;
}

.status-msg svg {
  width: 16px;
  height: 16px;
  flex-shrink: 0;
}

/* Checkbox */
.checkbox-row {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  padding: 14px 16px;
  border-radius: var(--radius-sm);
  background: rgba(245, 158, 11, 0.08);
  border: 1px solid rgba(245, 158, 11, 0.25);
}

.checkbox-row input[type="checkbox"] {
  width: 22px;
  height: 22px;
  min-width: 22px;
  margin-top: 1px;
  accent-color: var(--color-accent-3);
  cursor: pointer;
}

.checkbox-row label {
  font-size: 13.5px;
  color: var(--color-text-primary);
  line-height: 1.5;
  cursor: pointer;
}

.checkbox-row label strong {
  color: var(--color-accent-3);
}

/* Honeypot - hidden from real users, visible to bots */
.hp-field {
  position: absolute;
  left: -9999px;
  width: 1px;
  height: 1px;
  overflow: hidden;
}

/* Success overlay shown after submission */
.success-overlay {
  position: fixed;
  inset: 0;
  z-index: 100;
  display: none;
  align-items: center;
  justify-content: center;
  background: rgba(10, 14, 26, 0.85);
  backdrop-filter: blur(8px);
  padding: 20px;
}

.success-overlay.show {
  display: flex;
}

.success-card {
  max-width: 420px;
  width: 100%;
  text-align: center;
  padding: 40px 32px;
  border-radius: var(--radius-lg);
  background: var(--color-bg-mid);
  border: 1px solid var(--color-glass-border);
  box-shadow: var(--shadow-glow);
}

.success-icon {
  width: 64px;
  height: 64px;
  margin: 0 auto 18px;
  border-radius: 50%;
  background: rgba(34, 197, 94, 0.15);
  display: flex;
  align-items: center;
  justify-content: center;
}

.success-icon svg {
  width: 32px;
  height: 32px;
  color: var(--color-success);
}

.success-card h3 {
  font-family: var(--font-display);
  font-size: 20px;
  margin-bottom: 8px;
}

.success-card p {
  font-size: 14px;
  color: var(--color-text-secondary);
}

/* ---------------- Footer ---------------- */
.site-footer {
  border-top: 1px solid var(--color-glass-border);
  padding: 32px 20px;
  text-align: center;
}

.site-footer .footer-name {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 16px;
  margin-bottom: 8px;
}

.site-footer .footer-links {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 16px;
  font-size: 13px;
  color: var(--color-text-secondary);
  margin-bottom: 8px;
}

.site-footer a {
  color: var(--color-text-secondary);
  text-decoration: none;
}

.site-footer a:hover,
.site-footer a:focus-visible {
  color: var(--color-accent-2);
}

.site-footer .copyright {
  font-size: 12px;
  color: var(--color-text-muted);
}

/* Skip link for accessibility */
.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  background: var(--color-accent-1);
  color: #fff;
  padding: 10px 16px;
  z-index: 200;
  border-radius: var(--radius-sm);
}

.skip-link:focus {
  left: 10px;
  top: 10px;
}