/* ==============================================================================
 * Peketi Yaswanth - Modern Portfolio & Secure Auth Theme
 * ============================================================================== */

:root {
  --bg-primary: #07090e;
  --bg-secondary: #0c101a;
  --bg-card: rgba(14, 20, 32, 0.72);
  --bg-card-hover: rgba(20, 29, 48, 0.85);
  --border-color: rgba(255, 255, 255, 0.08);
  --border-focus: #38bdf8;

  --text-primary: #f8fafc;
  --text-secondary: #94a3b8;
  --text-light: #cbd5e1;
  --text-muted: #64748b;

  --accent-primary: #38bdf8;
  --accent-secondary: #60a5fa;
  --accent-indigo: #818cf8;
  --accent-emerald: #10b981;
  --accent-emerald-dark: #059669;
  --accent-rose: #f43f5e;

  --gradient-brand: linear-gradient(135deg, #38bdf8 0%, #6366f1 50%, #8b5cf6 100%);
  --gradient-emerald: linear-gradient(135deg, #10b981 0%, #059669 100%);
  --gradient-title: linear-gradient(135deg, #ffffff 40%, #93c5fd 100%);
  --gradient-card: linear-gradient(180deg, rgba(255, 255, 255, 0.04) 0%, rgba(255, 255, 255, 0) 100%);

  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-full: 9999px;

  --font-sans: "Plus Jakarta Sans", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --font-mono: "JetBrains Mono", monospace;

  --shadow-sm: 0 4px 14px rgba(0, 0, 0, 0.35);
  --shadow-md: 0 12px 35px rgba(0, 0, 0, 0.5);
  --shadow-glow: 0 0 40px rgba(56, 189, 248, 0.2);
  --shadow-emerald: 0 0 35px rgba(16, 185, 129, 0.35);
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-sans);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  overflow-x: hidden;
  position: relative;
  min-height: 100vh;
}

[hidden] {
  display: none !important;
}

/* ================= Ambient Glow Mesh ================= */
.glow-bg {
  position: fixed;
  width: 550px;
  height: 550px;
  border-radius: 50%;
  pointer-events: none;
  filter: blur(140px);
  z-index: 0;
  opacity: 0.38;
  animation: pulseGlow 10s ease-in-out infinite alternate;
}

.glow-bg.top-left {
  top: -180px;
  left: -180px;
  background: radial-gradient(circle, #38bdf8 0%, #6366f1 50%, transparent 70%);
}

.glow-bg.bottom-right {
  bottom: -180px;
  right: -180px;
  background: radial-gradient(circle, #818cf8 0%, #10b981 50%, transparent 70%);
  animation-delay: -5s;
}

@keyframes pulseGlow {
  0% { transform: scale(0.95); opacity: 0.32; }
  100% { transform: scale(1.08); opacity: 0.45; }
}

/* ==============================================================================
 * AUTHENTICATION PORTAL (Initial Screen Gate)
 * ============================================================================== */

.auth-wrapper {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 40px 20px;
  position: relative;
  z-index: 10;
}

.auth-container {
  width: 100%;
  max-width: 480px;
  background: rgba(14, 20, 32, 0.82);
  backdrop-filter: blur(28px) saturate(190%);
  -webkit-backdrop-filter: blur(28px) saturate(190%);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-lg);
  padding: 42px 38px;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.65), var(--shadow-glow);
  position: relative;
  overflow: hidden;
  animation: authCardIn 0.5s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

@keyframes authCardIn {
  from {
    opacity: 0;
    transform: translateY(20px) scale(0.97);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

.auth-container::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, #38bdf8, #818cf8, #10b981, #38bdf8);
  background-size: 300% 100%;
  animation: gradientSlide 6s linear infinite;
}

@keyframes gradientSlide {
  0% { background-position: 0% 50%; }
  100% { background-position: 300% 50%; }
}

.auth-header {
  text-align: center;
  margin-bottom: 28px;
}

.auth-header h1 {
  font-size: 30px;
  font-weight: 800;
  letter-spacing: -0.5px;
  margin-bottom: 8px;
  background: var(--gradient-title);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.auth-sub {
  font-size: 14px;
  color: var(--text-secondary);
}

/* Auth Segmented Tabs */
.auth-tabs {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 6px;
  background: rgba(4, 7, 13, 0.55);
  padding: 5px;
  border-radius: var(--radius-md);
  border: 1px solid rgba(255, 255, 255, 0.08);
  margin-bottom: 24px;
}

.tab-btn {
  background: transparent;
  color: var(--text-secondary);
  border: none;
  padding: 11px 16px;
  font-family: inherit;
  font-size: 14px;
  font-weight: 600;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all 0.25s ease;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
}

.tab-btn.active {
  background: linear-gradient(135deg, rgba(56, 189, 248, 0.2), rgba(99, 102, 241, 0.25));
  color: #f8fafc;
  border: 1px solid rgba(56, 189, 248, 0.35);
  box-shadow: 0 4px 15px rgba(56, 189, 248, 0.2);
}

/* Forms */
.input-group {
  margin-bottom: 20px;
  text-align: left;
}

.input-group label {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  font-weight: 600;
  color: var(--text-light);
  margin-bottom: 8px;
}

.input-group label i {
  color: var(--accent-primary);
}

.input-group input {
  width: 100%;
  padding: 13px 16px;
  background: rgba(4, 7, 13, 0.6);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  font-family: inherit;
  font-size: 14px;
  transition: all 0.25s ease;
}

.input-group input:focus {
  outline: none;
  border-color: var(--accent-primary);
  background: rgba(4, 7, 13, 0.85);
  box-shadow: 0 0 0 3px rgba(56, 189, 248, 0.22), 0 0 20px rgba(56, 189, 248, 0.15);
}

.helper-text {
  display: block;
  font-size: 12px;
  color: var(--text-muted);
  margin-top: 6px;
}

/* Primary Auth Submit Button */
.btn-primary.auth-submit {
  width: 100%;
  padding: 14px 22px;
  background: linear-gradient(135deg, #2563eb 0%, #38bdf8 100%);
  color: white;
  border: none;
  border-radius: var(--radius-md);
  font-family: inherit;
  font-size: 15px;
  font-weight: 700;
  letter-spacing: 0.3px;
  cursor: pointer;
  transition: all 0.25s ease;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  box-shadow: 0 8px 25px rgba(56, 189, 248, 0.35);
  margin-top: 6px;
}

.btn-primary.auth-submit:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 30px rgba(56, 189, 248, 0.5);
  filter: brightness(1.08);
}

.btn-primary.auth-submit:active {
  transform: scale(0.98);
}

.btn-primary:disabled {
  opacity: 0.65;
  cursor: not-allowed;
  transform: none;
  box-shadow: none;
}

.btn-secondary {
  width: 100%;
  padding: 13px 20px;
  background: rgba(255, 255, 255, 0.05);
  color: var(--text-light);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: var(--radius-md);
  font-family: inherit;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s ease;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  text-decoration: none;
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: rgba(255, 255, 255, 0.25);
  color: white;
}

.switch-btn {
  margin-top: 12px;
}

/* MFA Card */
.mfa-header {
  text-align: center;
  margin-bottom: 22px;
}

.mfa-icon {
  width: 60px;
  height: 60px;
  margin: 0 auto 14px;
  border-radius: 50%;
  background: rgba(56, 189, 248, 0.15);
  border: 1px solid rgba(56, 189, 248, 0.35);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 26px;
  color: var(--accent-primary);
  box-shadow: 0 0 25px rgba(56, 189, 248, 0.3);
}

.mfa-header h3 {
  font-size: 21px;
  font-weight: 700;
  margin-bottom: 6px;
}

.mfa-header p {
  font-size: 13.5px;
  color: var(--text-secondary);
  line-height: 1.5;
}

.otp-input {
  text-align: center;
  font-family: var(--font-mono) !important;
  font-size: 26px !important;
  letter-spacing: 10px !important;
  font-weight: 800;
  color: var(--accent-primary) !important;
}

/* Status message */
.status-msg {
  margin-top: 16px;
  font-size: 13.5px;
  line-height: 1.5;
  text-align: center;
  overflow-wrap: anywhere;
  color: var(--accent-primary);
  min-height: 20px;
}

/* ==============================================================================
 * PORTFOLIO NAVBAR
 * ============================================================================== */

.navbar-wrapper {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  backdrop-filter: blur(24px) saturate(180%);
  -webkit-backdrop-filter: blur(24px) saturate(180%);
  background: rgba(7, 9, 14, 0.85);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  transition: all 0.3s ease;
}

.nav-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 16px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 21px;
  font-weight: 800;
  color: var(--text-primary);
  letter-spacing: -0.5px;
  transition: transform 0.2s ease;
}

.logo:hover {
  transform: scale(1.02);
}

.logo-accent {
  background: var(--gradient-brand);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.nav-links {
  display: flex;
  list-style: none;
  gap: 28px;
}

.nav-links a {
  text-decoration: none;
  color: var(--text-secondary);
  font-size: 14.5px;
  font-weight: 600;
  transition: color 0.25s ease;
  position: relative;
  padding: 6px 0;
}

.nav-links a:hover {
  color: var(--accent-primary);
}

.nav-links a::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0%;
  height: 2px;
  background: var(--accent-primary);
  transition: width 0.25s ease;
}

.nav-links a:hover::after {
  width: 100%;
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 14px;
}

.user-pill {
  display: flex;
  align-items: center;
  gap: 9px;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.12);
  padding: 5px 14px 5px 6px;
  border-radius: var(--radius-full);
  font-size: 13.5px;
  font-weight: 600;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.2);
}

.user-avatar {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--gradient-brand);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 13px;
  color: white;
  box-shadow: 0 0 10px rgba(56, 189, 248, 0.4);
}

.btn-logout {
  padding: 8px 18px;
  background: rgba(244, 63, 94, 0.12);
  border: 1px solid rgba(244, 63, 94, 0.3);
  color: #fda4af;
  border-radius: var(--radius-full);
  font-family: inherit;
  font-size: 13px;
  font-weight: 700;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 7px;
  transition: all 0.25s ease;
}

.btn-logout:hover {
  background: rgba(244, 63, 94, 0.25);
  border-color: rgba(244, 63, 94, 0.6);
  color: white;
  transform: translateY(-1px);
  box-shadow: 0 4px 15px rgba(244, 63, 94, 0.35);
}

/* ==============================================================================
 * MAIN CONTENT & HERO SECTION
 * ============================================================================== */

.main-content {
  position: relative;
  z-index: 10;
  padding-top: 80px;
}

.hero-section {
  max-width: 1200px;
  margin: 0 auto;
  padding: 100px 24px 80px;
  min-height: calc(100vh - 80px);
  display: flex;
  align-items: center;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.25fr 0.75fr;
  align-items: center;
  gap: 55px;
  width: 100%;
}

.hero-greeting {
  font-size: 22px;
  color: var(--accent-primary);
  font-weight: 700;
  letter-spacing: 0.5px;
  margin-bottom: 12px;
  display: inline-block;
}

.hero-title {
  font-size: 58px;
  font-weight: 800;
  letter-spacing: -1.5px;
  line-height: 1.15;
  margin-bottom: 14px;
  background: var(--gradient-title);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-subtitle {
  font-size: 23px;
  font-weight: 600;
  color: #7dd3fc;
  margin-bottom: 24px;
  line-height: 1.4;
}

.hero-desc {
  font-size: 16.5px;
  line-height: 1.88;
  color: var(--text-light);
  max-width: 650px;
  margin-bottom: 34px;
}

.hero-buttons {
  display: flex;
  gap: 16px;
  align-items: center;
  flex-wrap: wrap;
}

/* View Projects Button */
.hero-buttons .btn-primary {
  width: auto;
  padding: 13px 28px;
  background: var(--gradient-emerald);
  color: white;
  border-radius: var(--radius-sm);
  text-decoration: none;
  font-weight: 700;
  font-size: 15px;
  letter-spacing: 0.3px;
  box-shadow: 0 8px 25px rgba(16, 185, 129, 0.4);
  transition: all 0.25s ease;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.hero-buttons .btn-primary:hover {
  background: linear-gradient(135deg, #34d399 0%, #059669 100%);
  transform: translateY(-3px);
  box-shadow: 0 12px 30px rgba(16, 185, 129, 0.55);
}

/* GitHub & LinkedIn Hero Outline Buttons */
.btn-box {
  border: 2px solid rgba(56, 189, 248, 0.6);
  color: #7dd3fc;
  padding: 11px 26px;
  border-radius: var(--radius-sm);
  text-decoration: none;
  font-weight: 700;
  font-size: 15px;
  background: rgba(56, 189, 248, 0.05);
  transition: all 0.25s ease;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  letter-spacing: 0.3px;
}

.btn-box:hover {
  background: #38bdf8;
  color: #07090e;
  border-color: #38bdf8;
  transform: translateY(-3px);
  box-shadow: 0 8px 25px rgba(56, 189, 248, 0.45);
}

/* Hero Visual Profile Image */
.hero-visual {
  display: flex;
  justify-content: center;
  align-items: center;
}

.hero-image {
  position: relative;
  padding: 8px;
  border-radius: 50%;
  background: linear-gradient(135deg, #38bdf8, #6366f1, #10b981);
  box-shadow: 0 0 50px rgba(56, 189, 248, 0.35);
  animation: floatImage 5s ease-in-out infinite alternate;
}

@keyframes floatImage {
  0% { transform: translateY(0); }
  100% { transform: translateY(-12px); }
}

.hero-image img {
  width: 320px;
  height: 320px;
  object-fit: cover;
  border-radius: 50%;
  display: block;
  border: 5px solid #07090e;
  transition: transform 0.35s ease;
}

.hero-image:hover img {
  transform: scale(1.03);
}

/* ==============================================================================
 * SECTION GENERAL & HEADERS
 * ============================================================================== */

.section {
  max-width: 1200px;
  margin: 0 auto;
  padding: 85px 24px;
}

.section-header {
  text-align: center;
  margin-bottom: 50px;
  position: relative;
}

.section-title {
  font-size: 40px;
  font-weight: 800;
  color: var(--accent-primary);
  letter-spacing: -0.8px;
  position: relative;
  display: inline-block;
}

.section-title::after {
  content: "";
  display: block;
  width: 60px;
  height: 4px;
  border-radius: 2px;
  background: linear-gradient(90deg, #38bdf8, #818cf8);
  margin: 14px auto 0;
  box-shadow: 0 0 12px rgba(56, 189, 248, 0.5);
}

/* ==============================================================================
 * ABOUT ME SECTION
 * ============================================================================== */

.about-single {
  max-width: 900px;
  margin: 0 auto;
  background: var(--bg-card);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--border-color);
  padding: 42px 48px;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  position: relative;
  overflow: hidden;
  transition: all 0.35s ease;
}

.about-single::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, rgba(56, 189, 248, 0.4), transparent);
}

.about-single:hover {
  border-color: rgba(56, 189, 248, 0.35);
  box-shadow: 0 12px 35px rgba(0, 0, 0, 0.4), 0 0 25px rgba(56, 189, 248, 0.15);
  transform: translateY(-3px);
}

.about-single p {
  font-size: 16.5px;
  line-height: 1.9;
  color: var(--text-light);
}

/* ==============================================================================
 * SKILLS SECTION
 * ============================================================================== */

.cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 24px;
  max-width: 980px;
  margin: 0 auto;
}

.card {
  background: var(--bg-card);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--border-color);
  padding: 38px 20px;
  border-radius: var(--radius-lg);
  text-align: center;
  position: relative;
  overflow: hidden;
  transition: all 0.35s cubic-bezier(0.4, 0, 0.2, 1);
}

.card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, rgba(56, 189, 248, 0.3), transparent);
}

.card:hover {
  transform: translateY(-10px) scale(1.02);
  border-color: rgba(56, 189, 248, 0.5);
  box-shadow: 0 18px 40px rgba(0, 0, 0, 0.5), 0 0 25px rgba(56, 189, 248, 0.25);
}

.card i {
  font-size: 48px;
  margin-bottom: 18px;
  display: inline-block;
  transition: transform 0.35s ease;
}

.card:hover i {
  transform: scale(1.15);
}

/* Distinct Skill Icon Glows */
.card .fa-python {
  color: #38bdf8;
  filter: drop-shadow(0 4px 14px rgba(56, 189, 248, 0.45));
}

.card .fa-java {
  color: #f97316;
  filter: drop-shadow(0 4px 14px rgba(249, 115, 22, 0.45));
}

.card .fa-html5 {
  color: #ea580c;
  filter: drop-shadow(0 4px 14px rgba(234, 88, 12, 0.45));
}

.card .fa-css3-alt {
  color: #2563eb;
  filter: drop-shadow(0 4px 14px rgba(37, 99, 235, 0.45));
}

.card .fa-code {
  color: #10b981;
  filter: drop-shadow(0 4px 14px rgba(16, 185, 129, 0.45));
}

.card .fa-brain {
  color: #a855f7;
  filter: drop-shadow(0 4px 14px rgba(168, 85, 247, 0.45));
}

.card h3 {
  font-size: 18px;
  font-weight: 700;
  color: var(--text-primary);
}

/* ==============================================================================
 * PROJECTS SECTION
 * ============================================================================== */

.projects-container {
  display: flex;
  flex-direction: column;
  gap: 28px;
  max-width: 960px;
  margin: 0 auto;
}

.project {
  background: var(--bg-card);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--border-color);
  padding: 38px 42px;
  border-radius: var(--radius-lg);
  position: relative;
  overflow: hidden;
  transition: all 0.35s ease;
}

.project::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, #38bdf8, #818cf8, transparent);
  opacity: 0.6;
}

.project:hover {
  transform: translateY(-6px);
  border-color: rgba(56, 189, 248, 0.45);
  box-shadow: 0 16px 40px rgba(0, 0, 0, 0.45), 0 0 25px rgba(56, 189, 248, 0.2);
}

.project h3 {
  color: var(--accent-primary);
  font-size: 24px;
  font-weight: 800;
  margin-bottom: 14px;
  letter-spacing: -0.3px;
}

.project p {
  font-size: 15.5px;
  line-height: 1.85;
  color: var(--text-light);
  margin-bottom: 14px;
}

.project p:last-child {
  margin-bottom: 0;
}

.project p strong {
  color: #f8fafc;
  display: inline-block;
  margin-right: 6px;
}

/* ==============================================================================
 * CONTACT SECTION
 * ============================================================================== */

.contact-links {
  display: flex;
  flex-direction: column;
  gap: 18px;
  max-width: 620px;
  margin: 0 auto;
  background: var(--bg-card);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--border-color);
  padding: 40px;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
}

.contact-links p {
  font-size: 16.5px;
  display: flex;
  align-items: center;
  gap: 16px;
  color: var(--text-light);
  margin: 0;
  padding: 14px 20px;
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.05);
  transition: all 0.25s ease;
}

.contact-links p:hover {
  background: rgba(56, 189, 248, 0.08);
  border-color: rgba(56, 189, 248, 0.3);
  transform: translateX(6px);
}

.contact-links i {
  font-size: 20px;
  color: var(--accent-primary);
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: rgba(56, 189, 248, 0.12);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.contact-links a {
  color: var(--text-primary);
  text-decoration: none;
  font-weight: 500;
  transition: color 0.2s ease;
  word-break: break-all;
}

.contact-links a:hover {
  color: var(--accent-primary);
  text-decoration: underline;
}

/* ==============================================================================
 * FOOTER & GIVE ADVANCE BUTTON
 * ============================================================================== */

.footer {
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  background: var(--bg-secondary);
  padding: 50px 24px;
  position: relative;
  z-index: 10;
  text-align: center;
}

.footer-container {
  max-width: 600px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 22px;
}

.footer-container p {
  font-size: 15px;
  color: var(--text-muted);
  margin: 0;
  font-weight: 500;
}

#payNowBtn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  padding: 18px 42px;
  background: var(--gradient-emerald);
  color: #ffffff;
  border: none;
  border-radius: var(--radius-md);
  font-family: inherit;
  font-size: 19px;
  font-weight: 800;
  letter-spacing: 0.5px;
  cursor: pointer;
  box-shadow: 0 8px 30px rgba(16, 185, 129, 0.4);
  transition: all 0.25s ease;
}

#payNowBtn:hover {
  background: linear-gradient(135deg, #34d399 0%, #059669 100%);
  transform: translateY(-3px) scale(1.02);
  box-shadow: 0 14px 40px rgba(16, 185, 129, 0.55);
}

#payNowBtn:active {
  transform: scale(0.98);
}

#payNowBtn:disabled {
  opacity: 0.65;
  cursor: not-allowed;
  transform: none;
  box-shadow: none;
}

/* ==============================================================================
 * RESPONSIVENESS
 * ============================================================================== */

@media (max-width: 960px) {
  .hero-grid {
    grid-template-columns: 1fr;
    text-align: center;
    gap: 45px;
  }

  .hero-desc {
    margin-left: auto;
    margin-right: auto;
  }

  .hero-buttons {
    justify-content: center;
  }

  .hero-visual {
    order: -1;
  }

  .hero-image img {
    width: 280px;
    height: 280px;
  }

  .about-single {
    padding: 30px 24px;
  }

  .project {
    padding: 30px 24px;
  }

  .contact-links {
    padding: 30px 20px;
  }
}

@media (max-width: 768px) {
  .nav-links {
    display: none;
  }

  .hero-title {
    font-size: 42px;
  }

  .hero-subtitle {
    font-size: 20px;
  }

  .section-title {
    font-size: 32px;
  }

  .auth-container {
    padding: 32px 22px;
  }
}

@media (max-width: 480px) {
  .hero-title {
    font-size: 34px;
  }

  .hero-subtitle {
    font-size: 18px;
  }

  .hero-image img {
    width: 220px;
    height: 220px;
  }

  .contact-links p {
    font-size: 14px;
  }

  #payNowBtn {
    width: 100%;
    font-size: 17px;
    padding: 16px 22px;
  }
}