/* ============================================================
   SOURADEEP DE — DATA ANALYST PORTFOLIO
   Design System + All Section Styles
   ============================================================ */

/* --- Google Fonts Import --- */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&family=Outfit:wght@400;500;600;700;800;900&display=swap');

/* --- CSS Custom Properties (Design Tokens) --- */
:root {
  /* Colors */
  --clr-primary: #2EBCB3;
  --clr-primary-dark: #239E96;
  --clr-primary-light: #E8F8F7;
  --clr-dark: #1A1A1A;
  --clr-dark-soft: #333333;
  --clr-gray: #6B7280;
  --clr-gray-light: #9CA3AF;
  --clr-bg: #F5F5F0;
  --clr-card: #FFFFFF;
  --clr-card-border: rgba(0, 0, 0, 0.06);
  --clr-lavender: #E8E0F0;
  --clr-lavender-light: #F0EAFF;

  /* Typography */
  --ff-heading: 'Outfit', sans-serif;
  --ff-body: 'Inter', sans-serif;

  /* Spacing */
  --section-padding: 100px 0;
  --container-width: 1200px;
  --container-padding: 0 24px;

  /* Radius */
  --radius-card: 20px;
  --radius-pill: 999px;
  --radius-sm: 12px;

  /* Shadows */
  --shadow-card: 0 2px 20px rgba(0, 0, 0, 0.04);
  --shadow-card-hover: 0 8px 40px rgba(0, 0, 0, 0.08);
  --shadow-nav: 0 4px 30px rgba(0, 0, 0, 0.06);

  /* Transitions */
  --transition-fast: 0.2s ease;
  --transition-base: 0.3s ease;
  --transition-slow: 0.5s ease;
}

/* --- Reset & Base --- */
*,
*::before,
*::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

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

body {
  font-family: var(--ff-body);
  font-size: 16px;
  line-height: 1.6;
  color: var(--clr-dark);
  background-color: var(--clr-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

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

ul, ol {
  list-style: none;
}

img {
  max-width: 100%;
  display: block;
}

button {
  font-family: var(--ff-body);
  cursor: pointer;
  border: none;
  outline: none;
}

/* --- Container --- */
.container {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: var(--container-padding);
}

/* --- Section Heading --- */
.section-heading {
  font-family: var(--ff-heading);
  font-size: clamp(2rem, 4vw, 2.8rem);
  font-weight: 800;
  color: var(--clr-dark);
  line-height: 1.2;
}

/* --- Buttons --- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 32px;
  border-radius: var(--radius-pill);
  font-weight: 600;
  font-size: 0.95rem;
  transition: all var(--transition-base);
  letter-spacing: -0.01em;
}

.btn-primary {
  background: var(--clr-dark);
  color: #FFFFFF;
}

.btn-primary:hover {
  background: #333;
  transform: translateY(-2px);
  box-shadow: 0 6px 24px rgba(0, 0, 0, 0.15);
}

.btn-secondary {
  background: transparent;
  color: var(--clr-dark);
  border: 1.5px solid var(--clr-card-border);
}

.btn-secondary:hover {
  background: var(--clr-dark);
  color: #fff;
  border-color: var(--clr-dark);
  transform: translateY(-2px);
}

.btn-teal {
  background: var(--clr-primary);
  color: #fff;
}

.btn-teal:hover {
  background: var(--clr-primary-dark);
  transform: translateY(-2px);
  box-shadow: 0 6px 24px rgba(46, 188, 179, 0.25);
}

/* --- Animated reveal --- */
.reveal {
  opacity: 0;
  transform: translateY(40px);
  transition: opacity 0.7s cubic-bezier(0.22, 1, 0.36, 1),
              transform 0.7s cubic-bezier(0.22, 1, 0.36, 1);
}

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

/* ============================================================
   NAVBAR
   ============================================================ */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  padding: 16px 0;
  transition: all var(--transition-base);
}

.navbar.scrolled {
  background: rgba(245, 245, 240, 0.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  box-shadow: var(--shadow-nav);
  padding: 12px 0;
}

.navbar .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-logo {
  font-family: var(--ff-heading);
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--clr-dark);
  display: flex;
  align-items: center;
  gap: 10px;
}

.nav-logo-icon {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--clr-dark);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--ff-heading);
  font-weight: 800;
  font-size: 1rem;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 36px;
}

.nav-links a {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--clr-gray);
  transition: color var(--transition-fast);
  position: relative;
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--clr-primary);
  transition: width var(--transition-base);
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--clr-dark);
}

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

.nav-cta {
  font-size: 0.9rem !important;
  color: #fff !important;
  background: var(--clr-dark);
  padding: 10px 24px;
  border-radius: var(--radius-pill);
  transition: all var(--transition-base) !important;
}

.nav-cta::after {
  display: none !important;
}

.nav-cta:hover {
  background: #333 !important;
  transform: translateY(-1px);
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.12);
}

/* Hamburger (mobile) */
.nav-hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 4px;
  z-index: 1010;
}

.nav-hamburger span {
  width: 24px;
  height: 2px;
  background: var(--clr-dark);
  transition: all var(--transition-base);
  border-radius: 2px;
}

.nav-hamburger.open span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

.nav-hamburger.open span:nth-child(2) {
  opacity: 0;
}

.nav-hamburger.open span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

/* ============================================================
   HERO SECTION
   ============================================================ */
.hero {
  padding: 160px 0 80px;
  min-height: 100vh;
  display: flex;
  align-items: center;
}

.hero .container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.hero-content {
  display: flex;
  flex-direction: column;
  gap: 28px;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--clr-primary-light);
  color: var(--clr-primary-dark);
  padding: 8px 18px;
  border-radius: var(--radius-pill);
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  width: fit-content;
}

.hero-badge-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--clr-primary);
  animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.5; transform: scale(1.3); }
}

.hero-title {
  font-family: var(--ff-heading);
  font-size: clamp(2.8rem, 5.5vw, 4.2rem);
  font-weight: 900;
  line-height: 1.08;
  color: var(--clr-dark);
  letter-spacing: -0.03em;
}

.hero-subtitle {
  font-size: 1.1rem;
  color: var(--clr-gray);
  line-height: 1.7;
  max-width: 440px;
}

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

.hero-socials {
  display: flex;
  gap: 12px;
  margin-top: 12px;
}

.hero-socials a {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--clr-card);
  border: 1px solid var(--clr-card-border);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-base);
  color: var(--clr-gray);
}

.hero-socials a:hover {
  background: var(--clr-primary);
  color: #fff;
  border-color: var(--clr-primary);
  transform: translateY(-3px);
  box-shadow: 0 4px 16px rgba(46, 188, 179, 0.25);
}

.hero-socials svg {
  width: 20px;
  height: 20px;
}

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

.hero-photo-card {
  position: relative;
  width: 100%;
  max-width: 420px;
}

.hero-photo-wrapper {
  position: relative;
  border-radius: var(--radius-card);
  overflow: hidden;
  box-shadow: var(--shadow-card);
  border: 1px solid var(--clr-card-border);
  background: var(--clr-card);
}

.hero-photo-wrapper img {
  width: 100%;
  aspect-ratio: 4 / 5;
  object-fit: cover;
}

.hero-info-card {
  position: absolute;
  top: -20px;
  left: -30px;
  background: var(--clr-card);
  border-radius: 16px;
  padding: 16px 20px;
  box-shadow: var(--shadow-card-hover);
  border: 1px solid var(--clr-card-border);
  z-index: 2;
  animation: float 4s ease-in-out infinite;
}

.hero-info-card h4 {
  font-family: var(--ff-heading);
  font-weight: 700;
  font-size: 1rem;
  margin-bottom: 2px;
}

.hero-info-card p {
  font-size: 0.8rem;
  color: var(--clr-gray);
}

.hero-tool-badge {
  position: absolute;
  bottom: -16px;
  left: -20px;
  background: var(--clr-primary);
  color: #fff;
  padding: 10px 20px;
  border-radius: 14px;
  font-size: 0.8rem;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 8px;
  box-shadow: 0 4px 20px rgba(46, 188, 179, 0.3);
  z-index: 2;
  animation: float 4s ease-in-out infinite 0.5s;
}

.hero-tool-badge svg {
  width: 16px;
  height: 16px;
}

.hero-stats-card {
  position: absolute;
  bottom: 40px;
  right: -40px;
  background: var(--clr-card);
  border-radius: 16px;
  padding: 16px 20px;
  box-shadow: var(--shadow-card-hover);
  border: 1px solid var(--clr-card-border);
  z-index: 2;
  animation: float 4s ease-in-out infinite 1s;
}

.hero-stats-card .stat-value {
  font-family: var(--ff-heading);
  font-weight: 800;
  font-size: 1.3rem;
  color: var(--clr-primary);
}

.hero-stats-card .stat-label {
  font-size: 0.75rem;
  color: var(--clr-gray);
}

@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-10px); }
}

/* ============================================================
   MISSION SECTION
   ============================================================ */
.mission {
  padding: 40px 0 80px;
}

.mission-card {
  background: var(--clr-primary);
  border-radius: var(--radius-card);
  padding: 60px 60px 40px;
  color: #fff;
}

.mission-text {
  font-family: var(--ff-heading);
  font-size: clamp(1.5rem, 3vw, 2.2rem);
  font-weight: 700;
  line-height: 1.4;
  max-width: 900px;
}

.mission-ticker-wrapper {
  margin-top: 36px;
  overflow: hidden;
  mask-image: linear-gradient(to right, transparent, black 10%, black 90%, transparent);
  -webkit-mask-image: linear-gradient(to right, transparent, black 10%, black 90%, transparent);
}

.mission-ticker {
  display: flex;
  gap: 48px;
  animation: ticker 20s linear infinite;
  width: max-content;
}

.mission-ticker span {
  font-size: 1rem;
  font-weight: 600;
  opacity: 0.8;
  white-space: nowrap;
  letter-spacing: 0.02em;
}

@keyframes ticker {
  0% { transform: translateX(0); }
  100% { transform: translateX(-50%); }
}

/* ============================================================
   SKILLS SECTION
   ============================================================ */
.skills {
  padding: var(--section-padding);
}

.skills .container {
  display: grid;
  grid-template-columns: 280px 1fr;
  gap: 60px;
  align-items: start;
}

.skills-header {
  position: sticky;
  top: 120px;
}

.skills-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
}

.skill-card {
  background: var(--clr-card);
  border-radius: var(--radius-card);
  padding: 32px 28px;
  border: 1px solid var(--clr-card-border);
  box-shadow: var(--shadow-card);
  transition: all var(--transition-base);
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.skill-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-card-hover);
}

.skill-card-icon {
  width: 48px;
  height: 48px;
  border-radius: 14px;
  background: var(--clr-primary-light);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--clr-primary);
}

.skill-card-icon svg {
  width: 24px;
  height: 24px;
}

.skill-card-text {
  font-size: 0.9rem;
  color: var(--clr-gray);
  line-height: 1.6;
}

.skill-card-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: auto;
  padding-top: 16px;
  border-top: 1px solid var(--clr-card-border);
}

.skill-card-name {
  font-family: var(--ff-heading);
  font-weight: 700;
  font-size: 1.05rem;
}

.skill-card-num {
  font-family: var(--ff-heading);
  font-weight: 700;
  font-size: 0.9rem;
  color: var(--clr-gray-light);
}

/* ============================================================
   PROJECTS SECTION
   ============================================================ */
.projects {
  padding: var(--section-padding);
  background: var(--clr-card);
  border-radius: var(--radius-card);
  margin: 0 20px;
}

.projects-page {
  margin-top: 100px;
  margin-bottom: 40px;
}

.projects-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  margin-bottom: 48px;
}

.projects-header .section-heading {
  max-width: 300px;
}

.projects-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 40px;
}

.project-card {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 40px;
  align-items: center;
  padding: 28px;
  border-radius: var(--radius-card);
  border: 1px solid var(--clr-card-border);
  background: var(--clr-bg);
  transition: all var(--transition-base);
}

.project-card:hover {
  box-shadow: var(--shadow-card-hover);
  transform: translateY(-3px);
}

.project-card:nth-child(even) {
  direction: rtl;
}

.project-card:nth-child(even) > * {
  direction: ltr;
}

.project-image {
  border-radius: 16px;
  overflow: hidden;
  aspect-ratio: 16 / 10;
  background: var(--clr-dark);
}

.project-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-slow);
}

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

.project-info {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.project-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.85rem;
  color: var(--clr-gray);
}

.project-name {
  font-family: var(--ff-heading);
  font-size: 1.5rem;
  font-weight: 700;
  line-height: 1.3;
}

.project-desc {
  font-size: 0.92rem;
  color: var(--clr-gray);
  line-height: 1.7;
}

.project-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 8px;
}

.project-tag {
  padding: 6px 14px;
  border-radius: var(--radius-pill);
  border: 1.5px solid var(--clr-primary);
  color: var(--clr-primary);
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  transition: all var(--transition-fast);
}

.project-tag:hover {
  background: var(--clr-primary);
  color: #fff;
}

/* ============================================================
   EDUCATION & CERTIFICATIONS SECTION
   ============================================================ */
.education {
  padding: var(--section-padding);
}

.education-header {
  display: flex;
  align-items: flex-start;
  gap: 20px;
  margin-bottom: 48px;
}

.education-header .section-heading {
  flex: 1;
}

.education-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
}

.education-card {
  background: var(--clr-card);
  border-radius: var(--radius-card);
  padding: 32px 28px;
  border: 1px solid var(--clr-card-border);
  box-shadow: var(--shadow-card);
  transition: all var(--transition-base);
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.education-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-card-hover);
}

.education-card.cta-card {
  justify-content: center;
}

.education-card.cta-card .section-heading {
  font-size: clamp(1.8rem, 3vw, 2.2rem);
}

.education-institution {
  font-family: var(--ff-heading);
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--clr-gray-light);
}

.education-title {
  font-family: var(--ff-heading);
  font-weight: 700;
  font-size: 1rem;
  color: var(--clr-dark);
  line-height: 1.4;
}

.education-year {
  font-size: 0.85rem;
  color: var(--clr-primary);
  font-weight: 600;
}

.education-icon {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  background: var(--clr-primary-light);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
}

/* ============================================================
   CONTACT SECTION
   ============================================================ */
.contact {
  padding: 60px 0 80px;
}

.contact-card {
  background: linear-gradient(135deg, #f0eaff 0%, #e8e0f0 30%, #f5f5f0 60%, #e8f0ff 100%);
  border-radius: var(--radius-card);
  padding: 60px;
  text-align: center;
}

.contact-title {
  font-family: var(--ff-heading);
  font-size: clamp(1.8rem, 3.5vw, 2.6rem);
  font-weight: 800;
  margin-bottom: 12px;
}

.contact-subtitle {
  font-size: 1rem;
  color: var(--clr-gray);
  margin-bottom: 40px;
}

.contact-form {
  max-width: 640px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.contact-form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.contact-form input,
.contact-form textarea {
  width: 100%;
  padding: 16px 20px;
  border-radius: 14px;
  border: 1px solid rgba(0, 0, 0, 0.08);
  background: rgba(255, 255, 255, 0.6);
  font-family: var(--ff-body);
  font-size: 0.95rem;
  color: var(--clr-dark);
  transition: all var(--transition-base);
  outline: none;
}

.contact-form input::placeholder,
.contact-form textarea::placeholder {
  color: var(--clr-gray-light);
}

.contact-form input:focus,
.contact-form textarea:focus {
  border-color: var(--clr-primary);
  background: rgba(255, 255, 255, 0.85);
  box-shadow: 0 0 0 4px rgba(46, 188, 179, 0.1);
}

.contact-form textarea {
  min-height: 140px;
  resize: vertical;
}

.contact-form .btn {
  width: 100%;
  justify-content: center;
  padding: 16px;
  font-size: 1rem;
}

/* Form field wrapper */
.form-field {
  display: flex;
  flex-direction: column;
  gap: 0;
  width: 100%;
}

/* Validation error styles */
.field-error {
  display: none;
  font-size: 0.8rem;
  color: #E53E3E;
  font-weight: 500;
  padding: 6px 12px 0;
  align-items: center;
  gap: 4px;
}

.field-error.active {
  display: flex;
}

.contact-form input.invalid,
.contact-form textarea.invalid {
  border-color: #E53E3E;
  background: rgba(229, 62, 62, 0.04);
}

.contact-form input.invalid:focus,
.contact-form textarea.invalid:focus {
  box-shadow: 0 0 0 4px rgba(229, 62, 62, 0.1);
  border-color: #E53E3E;
}

/* Success toast */
.form-success {
  display: none;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  padding: 40px 24px;
  text-align: center;
  animation: successFadeIn 0.5s ease forwards;
}

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

.form-success-icon {
  width: 60px;
  height: 60px;
  border-radius: 50%;
  background: linear-gradient(135deg, #2EBCB3, #239E96);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  animation: successPop 0.5s cubic-bezier(0.175, 0.885, 0.32, 1.275) forwards;
}

.form-success h4 {
  font-family: var(--ff-heading);
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--clr-dark);
}

.form-success p {
  font-size: 0.95rem;
  color: var(--clr-gray);
}

@keyframes successFadeIn {
  from { opacity: 0; transform: translateY(16px); }
  to   { opacity: 1; transform: translateY(0); }
}

@keyframes successPop {
  0%   { transform: scale(0); }
  80%  { transform: scale(1.1); }
  100% { transform: scale(1); }
}

.contact-info-row {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 32px;
  margin-top: 28px;
  font-size: 0.9rem;
  color: var(--clr-gray);
}

.contact-info-row a {
  color: var(--clr-dark);
  font-weight: 600;
  transition: color var(--transition-fast);
}

.contact-info-row a:hover {
  color: var(--clr-primary);
}

/* ============================================================
   FOOTER SECTION
   ============================================================ */
.footer {
  padding: 0 0 40px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  margin-bottom: 20px;
}

.footer-card {
  border-radius: var(--radius-card);
  padding: 48px 40px;
}

.footer-connect {
  background: var(--clr-card);
  border: 1px solid var(--clr-card-border);
}

.footer-connect-title {
  font-family: var(--ff-heading);
  font-size: clamp(2rem, 4vw, 2.8rem);
  font-weight: 800;
  line-height: 1.15;
  margin-bottom: 28px;
}

.footer-email {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-weight: 600;
  font-size: 0.95rem;
  color: var(--clr-dark);
  transition: all var(--transition-base);
}

.footer-email:hover {
  color: var(--clr-primary);
}

.footer-email-icon {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--clr-dark);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-base);
}

.footer-email:hover .footer-email-icon {
  background: var(--clr-primary);
}

.footer-social {
  background: var(--clr-primary);
  color: #fff;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 24px;
}

.footer-social-label {
  font-family: var(--ff-heading);
  font-size: 1.1rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  gap: 8px;
}

.footer-social-links {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 12px;
}

.footer-social-link {
  padding: 10px 24px;
  border: 2px solid rgba(255, 255, 255, 0.4);
  border-radius: var(--radius-pill);
  font-weight: 600;
  font-size: 0.9rem;
  color: #fff;
  transition: all var(--transition-base);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.footer-social-link:hover {
  background: #fff;
  color: var(--clr-primary);
  border-color: #fff;
  transform: translateY(-2px);
}

.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 28px;
  background: var(--clr-card);
  border-radius: var(--radius-card);
  border: 1px solid var(--clr-card-border);
}

.footer-logo {
  font-family: var(--ff-heading);
  font-weight: 800;
  font-size: 1rem;
  display: flex;
  align-items: center;
  gap: 8px;
}

.footer-logo span {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--clr-dark);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.7rem;
}

.footer-copy {
  font-size: 0.85rem;
  color: var(--clr-gray);
}

.footer-bottom .nav-cta {
  font-size: 0.85rem !important;
  padding: 8px 20px;
}

/* ============================================================
   RESPONSIVE — TABLET (≤ 1024px)
   ============================================================ */
@media (max-width: 1024px) {
  .hero .container {
    grid-template-columns: 1fr;
    gap: 40px;
    text-align: center;
  }

  .hero-content {
    align-items: center;
  }

  .hero-subtitle {
    max-width: 100%;
  }

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

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

  .hero-visual {
    order: -1;
  }

  .hero-photo-card {
    max-width: 320px;
  }

  .hero-info-card {
    left: -10px;
    top: -10px;
  }

  .hero-stats-card {
    right: -10px;
    bottom: 20px;
  }

  .skills .container {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .skills-header {
    position: static;
    text-align: center;
  }

  .project-card {
    grid-template-columns: 1fr;
  }

  .project-card:nth-child(even) {
    direction: ltr;
  }
}

/* ============================================================
   RESPONSIVE — MOBILE (≤ 768px)
   ============================================================ */
@media (max-width: 768px) {
  :root {
    --section-padding: 60px 0;
  }

  /* Mobile nav */
  .nav-links {
    position: fixed;
    top: 0;
    right: -100%;
    width: 80%;
    max-width: 320px;
    height: 100vh;
    flex-direction: column;
    background: var(--clr-bg);
    padding: 100px 40px 40px;
    gap: 24px;
    transition: right var(--transition-base);
    box-shadow: -10px 0 40px rgba(0, 0, 0, 0.08);
    z-index: 1005;
  }

  .nav-links.open {
    right: 0;
  }

  .nav-links a {
    font-size: 1.1rem;
  }

  .nav-hamburger {
    display: flex;
  }

  .mobile-overlay {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.3);
    z-index: 1004;
  }

  .mobile-overlay.active {
    display: block;
  }

  /* Hero */
  .hero {
    padding: 120px 0 60px;
    min-height: auto;
  }

  .hero-title {
    font-size: 2.4rem;
  }

  .hero-photo-card {
    max-width: 280px;
  }

  .hero-info-card,
  .hero-stats-card {
    display: none;
  }

  .hero-tool-badge {
    bottom: -10px;
    left: 10px;
  }

  /* Mission */
  .mission-card {
    padding: 36px 28px 28px;
  }

  /* Skills */
  .skills-grid {
    grid-template-columns: 1fr;
  }

  /* Projects */
  .projects {
    margin: 0 12px;
    padding: 60px 20px;
  }

  .projects-header {
    flex-direction: column;
    gap: 16px;
  }

  .project-card {
    padding: 16px;
    gap: 20px;
  }

  .project-name {
    font-size: 1.2rem;
  }

  /* Education */
  .education-grid {
    grid-template-columns: 1fr;
  }

  .education-header {
    flex-direction: column;
    gap: 12px;
  }

  /* Contact */
  .contact-card {
    padding: 36px 24px;
  }

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

  .contact-info-row {
    flex-direction: column;
    gap: 8px;
  }

  /* Footer */
  .footer-grid {
    grid-template-columns: 1fr;
  }

  .footer-card {
    padding: 32px 28px;
  }

  .footer-bottom {
    flex-direction: column;
    gap: 12px;
    text-align: center;
  }

  .footer-bottom .nav-cta {
    width: 100%;
    text-align: center;
    justify-content: center;
  }
}

/* ============================================================
   RESPONSIVE — SMALL MOBILE (≤ 480px)
   ============================================================ */
@media (max-width: 480px) {
  .hero-title {
    font-size: 2rem;
  }

  .section-heading {
    font-size: 1.7rem;
  }

  .container {
    padding: 0 16px;
  }
}