/* ==========================================================================
   CSS Variables & Theme Setup
   ========================================================================== */
:root {
  /* Color Palette - Premium Dark Theme */
  --clr-bg: #0a0a0a;
  --clr-bg-alt: #121212;
  --clr-text: #e0e0e0;
  --clr-text-muted: #a0a0a0;
  --clr-primary: #6366f1; /* Indigo */
  --clr-secondary: #8b5cf6; /* Violet */
  --clr-accent: #f43f5e; /* Rose */

  /* Typography */
  --font-main: "Outfit", sans-serif;
  --fs-base: 16px;
  --fs-h1: clamp(2.5rem, 5vw, 4.5rem);
  --fs-h2: clamp(2rem, 4vw, 3rem);
  --fs-h3: clamp(1.25rem, 3vw, 1.75rem);

  /* Spacing & Layout */
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 2rem;
  --spacing-lg: 4rem;
  --spacing-xl: 6rem;

  --container-width: 1100px;

  /* Effects */
  --transition-fast: 0.2s ease;
  --transition-normal: 0.4s cubic-bezier(0.16, 1, 0.3, 1);
  --transition-slow: 0.6s cubic-bezier(0.16, 1, 0.3, 1);

  --radius-sm: 8px;
  --radius-md: 16px;
  --radius-lg: 24px;

  --shadow-soft: 0 10px 30px rgba(0, 0, 0, 0.5);
  --shadow-glow: 0 0 20px rgba(99, 102, 241, 0.3);
}

/* ==========================================================================
   Reset & Base Styles
   ========================================================================== */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-main);
  background-color: var(--clr-bg);
  color: var(--clr-text);
  line-height: 1.6;
  overflow-x: hidden;
  font-size: var(--fs-base);
}

a {
  text-decoration: none;
  color: inherit;
  transition: color var(--transition-fast);
}

ul {
  list-style: none;
}

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

/* ==========================================================================
   Utility Classes
   ========================================================================== */
.container {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}

.grid {
  display: grid;
  gap: var(--spacing-md);
}

.section {
  padding: var(--spacing-xl) 0;
}

.section-title {
  font-size: var(--fs-h2);
  font-weight: 800;
  margin-bottom: var(--spacing-lg);
  background: linear-gradient(135deg, var(--clr-text), var(--clr-text-muted));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  position: relative;
  display: inline-block;
}

.section-title::after {
  content: "";
  position: absolute;
  bottom: -10px;
  left: 50%;
  transform: translateX(-50%);
  width: 60px;
  height: 4px;
  background: linear-gradient(90deg, var(--clr-primary), var(--clr-secondary));
  border-radius: 4px;
}

.text-center {
  text-align: center;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 14px 32px;
  font-weight: 600;
  border-radius: var(--radius-md);
  background: linear-gradient(135deg, var(--clr-primary), var(--clr-secondary));
  color: white;
  box-shadow: var(--shadow-glow);
  transition:
    transform var(--transition-fast),
    box-shadow var(--transition-fast);
  cursor: pointer;
  border: none;
  letter-spacing: 0.5px;
}

.btn:hover {
  transform: translateY(-3px);
  box-shadow: 0 10px 25px rgba(99, 102, 241, 0.5);
}

/* ==========================================================================
   Loader
   ========================================================================== */
.loader-container {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: var(--clr-bg);
  display: flex;
  justify-content: center;
  align-items: center;
  z-index: 9999;
  transition: opacity var(--transition-normal);
}

.spinner {
  width: 50px;
  height: 50px;
  border: 4px solid rgba(255, 255, 255, 0.1);
  border-left-color: var(--clr-primary);
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

@keyframes spin {
  0% {
    transform: rotate(0deg);
  }
  100% {
    transform: rotate(360deg);
  }
}

/* ==========================================================================
   Header & Navigation
   ========================================================================== */
.header {
  width: 100%;
  position: fixed;
  top: 0;
  left: 0;
  z-index: 1000;
  background-color: rgba(10, 10, 10, 0.8);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
  transition: padding var(--transition-normal);
  padding: var(--spacing-sm) 0;
}

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

.logo {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--clr-text);
  letter-spacing: -1px;
}

.logo span {
  color: var(--clr-primary);
}

.nav-list {
  display: flex;
  gap: var(--spacing-md);
}

.nav-link {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--clr-text-muted);
  position: relative;
}

.nav-link:hover,
.nav-link.active {
  color: var(--clr-text);
}

.nav-link::after {
  content: "";
  position: absolute;
  bottom: -5px;
  left: 0;
  width: 0%;
  height: 2px;
  background-color: var(--clr-primary);
  transition: width var(--transition-fast);
}

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

.nav-close,
.nav-toggle {
  display: none;
  font-size: 1.5rem;
  cursor: pointer;
  color: var(--clr-text);
}

/* ==========================================================================
   Hero Section
   ========================================================================== */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  position: relative;
  padding-top: calc(var(--spacing-xl) + 60px);
}

.hero::before {
  content: "";
  position: absolute;
  top: -20%;
  left: -10%;
  width: 50vw;
  height: 50vw;
  background: radial-gradient(
    circle,
    rgba(99, 102, 241, 0.15) 0%,
    rgba(10, 10, 10, 0) 70%
  );
  border-radius: 50%;
  z-index: -1;
}

.hero::after {
  content: "";
  position: absolute;
  bottom: 0;
  right: -10%;
  width: 40vw;
  height: 40vw;
  background: radial-gradient(
    circle,
    rgba(139, 92, 246, 0.15) 0%,
    rgba(10, 10, 10, 0) 70%
  );
  border-radius: 50%;
  z-index: -1;
}

.hero-data {
  max-width: 800px;
  margin: 0 auto;
  text-align: center;
}

.hero-greeting {
  font-size: 1.2rem;
  font-weight: 600;
  color: var(--clr-primary);
  margin-bottom: var(--spacing-xs);
  letter-spacing: 2px;
  text-transform: uppercase;
}

.hero-title {
  font-size: var(--fs-h1);
  font-weight: 800;
  line-height: 1.1;
  margin-bottom: var(--spacing-sm);
}

.hero-role {
  font-size: var(--fs-h2);
  font-weight: 300;
  color: var(--clr-text-muted);
  margin-bottom: var(--spacing-md);
}

.hero-description {
  font-size: 1.1rem;
  color: var(--clr-text-muted);
  margin-bottom: var(--spacing-lg);
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
  line-height: 1.8;
}

/* ==========================================================================
   About Section
   ========================================================================== */
.about {
  background-color: var(--clr-bg-alt);
  border-radius: var(--radius-lg);
  margin: 0 var(--spacing-sm);
}

.about-container {
  grid-template-columns: 1fr;
  gap: var(--spacing-md);
}

@media screen and (min-width: 768px) {
  .about-container {
    grid-template-columns: 1fr 1fr;
    align-items: center;
    gap: var(--spacing-xl);
  }
}

.about-text p {
  margin-bottom: var(--spacing-sm);
  color: var(--clr-text-muted);
  font-size: 1.05rem;
}

.about-skills h3 {
  font-size: 1.2rem;
  margin-bottom: var(--spacing-sm);
  margin-top: var(--spacing-md);
}

.skills-list {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.skill-tag {
  background-color: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
  padding: 8px 16px;
  border-radius: 20px;
  font-size: 0.9rem;
  color: var(--clr-text);
  transition: all var(--transition-fast);
}

.skill-tag:hover {
  background-color: rgba(99, 102, 241, 0.2);
  border-color: var(--clr-primary);
  transform: translateY(-2px);
}

/* ==========================================================================
   Experience & Education Sections
   ========================================================================== */
.experience-container,
.education-container {
  grid-template-columns: 1fr;
  gap: var(--spacing-md);
  max-width: 800px;
  margin: 0 auto;
}

.data-card {
  background-color: var(--clr-bg-alt);
  border-radius: var(--radius-md);
  overflow: hidden;
  position: relative;
  border: 1px solid rgba(255, 255, 255, 0.05);
  transition:
    transform var(--transition-normal),
    box-shadow var(--transition-normal);
  display: flex;
  flex-direction: column;
}

.data-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-soft);
  border-color: rgba(99, 102, 241, 0.3);
}

.data-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 4px;
  height: 100%;
  background: linear-gradient(to bottom, var(--clr-primary), var(--clr-secondary));
  opacity: 0.5;
  transition: opacity var(--transition-fast);
}

.data-card:hover::before {
  opacity: 1;
}

.data-content {
  padding: var(--spacing-md);
  display: flex;
  flex-direction: column;
  flex-grow: 1;
}

.data-title {
  font-size: 1.25rem;
  margin-bottom: 0.2rem;
  font-weight: 600;
  color: var(--clr-text);
}

.data-subtitle {
  font-size: 0.95rem;
  color: var(--clr-primary);
  margin-bottom: var(--spacing-sm);
  font-weight: 500;
}

.data-subtitle span {
  color: var(--clr-text-muted);
  font-weight: 400;
}

.data-description {
  color: var(--clr-text-muted);
  font-size: 0.95rem;
  margin-bottom: var(--spacing-md);
  flex-grow: 1;
  white-space: pre-line;
}

.data-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.data-tag {
  font-size: 0.8rem;
  color: var(--clr-secondary);
  background-color: rgba(139, 92, 246, 0.1);
  padding: 4px 10px;
  border-radius: 4px;
}

/* ==========================================================================
   Contact Section
   ========================================================================== */
.contact-container {
  max-width: 600px;
  margin: 0 auto;
  text-align: center;
  background-color: var(--clr-bg-alt);
  padding: var(--spacing-lg);
  border-radius: var(--radius-lg);
  border: 1px solid rgba(255, 255, 255, 0.05);
}

.contact-desc {
  color: var(--clr-text-muted);
  margin-bottom: var(--spacing-md);
  font-size: 1.1rem;
}

.contact-email {
  display: inline-block;
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--clr-text);
  margin-bottom: var(--spacing-md);
  position: relative;
  padding-bottom: 5px;
}

.contact-email::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 2px;
  background: linear-gradient(90deg, var(--clr-primary), var(--clr-secondary));
  transform: scaleX(0);
  transform-origin: right;
  transition: transform var(--transition-normal);
}

.contact-email:hover::after {
  transform: scaleX(1);
  transform-origin: left;
}

.contact-socials {
  display: flex;
  justify-content: center;
  gap: var(--spacing-sm);
  margin-top: var(--spacing-md);
}

.social-link {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 45px;
  height: 45px;
  background-color: rgba(255, 255, 255, 0.05);
  border-radius: 50%;
  font-size: 1.2rem;
  color: var(--clr-text);
  transition: all var(--transition-fast);
}

.social-link:hover {
  background-color: var(--clr-primary);
  color: white;
  transform: translateY(-3px);
}

/* ==========================================================================
   Footer
   ========================================================================== */
.footer {
  padding: var(--spacing-md) 0;
  text-align: center;
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  background-color: var(--clr-bg);
}

.footer-text {
  color: var(--clr-text-muted);
  font-size: 0.9rem;
}

/* ==========================================================================
   Media Queries
   ========================================================================== */
@media screen and (max-width: 768px) {
  .nav-menu {
    position: fixed;
    top: 0;
    right: -100%;
    width: 80%;
    max-width: 300px;
    height: 100vh;
    background-color: rgba(10, 10, 10, 0.95);
    backdrop-filter: blur(15px);
    -webkit-backdrop-filter: blur(15px);
    box-shadow: -10px 0 30px rgba(0, 0, 0, 0.5);
    padding: var(--spacing-xl) var(--spacing-md);
    transition: right var(--transition-normal);
    display: flex;
    flex-direction: column;
  }

  .nav-menu.show-menu {
    right: 0;
  }

  .nav-list {
    flex-direction: column;
    row-gap: var(--spacing-md);
  }

  .nav-link {
    font-size: 1.25rem;
  }

  .nav-close {
    display: block;
    position: absolute;
    top: 1.5rem;
    right: 1.5rem;
  }

  .nav-toggle {
    display: block;
  }
}