/* ===========================
   VARIABLES & THEME
   =========================== */

:root {
    --primary: oklch(0.65 0.25 260);
    --primary-foreground: oklch(0.95 0.01 65);
    --background: oklch(0.08 0.005 285.823);
    --foreground: oklch(0.92 0.01 65);
    --card: oklch(0.15 0.008 285.885);
    --card-foreground: oklch(0.92 0.01 65);
    --border: oklch(1 0 0 / 12%);
    --input: oklch(1 0 0 / 18%);
    --ring: oklch(0.65 0.25 260);
    --radius: 0.65rem;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ===========================
   RESET & BASE STYLES
   =========================== */

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    background-color: var(--background);
    color: var(--foreground);
    line-height: 1.6;
    overflow-x: hidden;
}

body.dark {
    background-color: var(--background);
    color: var(--foreground);
}

/* ===========================
   BACKGROUND LAYER
   =========================== */

.bg-layer {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
    background-attachment: fixed;
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
}

.bg-layer::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(13, 27, 42, 0.85) 0%, rgba(30, 41, 59, 0.9) 100%);
    pointer-events: none;
}

/* ===========================
   CONTENT WRAPPER
   =========================== */

.content {
    position: relative;
    z-index: 10;
}

/* ===========================
   CONTAINER
   =========================== */

.container {
    width: 100%;
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 1rem;
}

@media (min-width: 640px) {
    .container {
        padding: 0 1.5rem;
    }
}

@media (min-width: 1024px) {
    .container {
        padding: 0 2rem;
    }
}

/* ===========================
   GLASSMORPHISM EFFECTS
   =========================== */

.glass {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 1.5rem;
}

.glass-sm {
    background: rgba(255, 255, 255, 0.08);
    backdrop-filter: blur(16px);
    border: 1px solid rgba(255, 255, 255, 0.15);
    border-radius: 1rem;
}

.glass-lg {
    background: rgba(255, 255, 255, 0.12);
    backdrop-filter: blur(24px);
    border: 1px solid rgba(255, 255, 255, 0.25);
    border-radius: 2rem;
}

/* ===========================
   HEADER/NAVIGATION
   =========================== */

.site-header {
    position: fixed;
    top: 0;
    width: 100%;
    z-index: 50;
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 4rem;
    padding: 0 1rem;
}

@media (min-width: 768px) {
    .header-inner {
        height: 5rem;
        padding: 0 2rem;
    }
}

/* Brand Logo */
.brand {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    text-decoration: none;
    transition: var(--transition);
}

.brand-logo {
    width: 2.5rem;
    height: 2.5rem;
    border-radius: 0.5rem;
    transition: var(--transition);
}

.brand:hover .brand-logo {
    box-shadow: 0 0 20px rgba(102, 153, 255, 0.4);
}

.brand-text {
    font-size: 1.25rem;
    font-weight: 700;
    background: linear-gradient(135deg, #6699ff, #4488ff);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    display: none;
}

@media (min-width: 640px) {
    .brand-text {
        display: inline;
    }
}

/* Desktop Navigation */
.nav {
    display: none;
    align-items: center;
    gap: 0.5rem;
}

@media (min-width: 768px) {
    .nav {
        display: flex;
    }
}

.nav-link {
    padding: 0.5rem 1rem;
    border-radius: 0.5rem;
    text-decoration: none;
    color: rgba(255, 255, 255, 0.7);
    font-weight: 500;
    transition: var(--transition);
}

.nav-link:hover,
.nav-link.active {
    background-color: rgba(255, 255, 255, 0.2);
    color: white;
}

/* CV Button */
.btn-cv {
    display: none;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
    border-radius: 0.5rem;
    background: linear-gradient(135deg, #2563eb, #1d4ed8);
    color: white;
    font-weight: 600;
    text-decoration: none;
    transition: var(--transition);
    cursor: pointer;
}

@media (min-width: 640px) {
    .btn-cv {
        display: flex;
    }
}

.btn-cv:hover {
    box-shadow: 0 0 20px rgba(37, 99, 235, 0.4);
    transform: translateY(-2px);
}

/* Hamburger Menu */
.hamburger {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 2.5rem;
    height: 2.5rem;
    background: none;
    border: none;
    color: white;
    font-size: 1.5rem;
    cursor: pointer;
    transition: var(--transition);
}

@media (min-width: 768px) {
    .hamburger {
        display: none;
    }
}

.hamburger:hover {
    background-color: rgba(255, 255, 255, 0.1);
    border-radius: 0.5rem;
}

/* Mobile Navigation */
.nav-mobile {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    padding: 1rem 0;
    flex-direction: column;
    gap: 0;
    animation: slideDown 0.3s ease-out;
}

.nav-mobile.active {
    display: flex;
}

@media (min-width: 768px) {
    .nav-mobile {
        display: none !important;
    }
}

.nav-link-mobile {
    display: block;
    padding: 0.75rem 1rem;
    color: rgba(255, 255, 255, 0.7);
    text-decoration: none;
    transition: var(--transition);
    border-left: 3px solid transparent;
}

.nav-link-mobile:hover {
    background-color: rgba(255, 255, 255, 0.1);
    color: white;
    border-left-color: #6699ff;
}

/* ===========================
   HERO SECTION
   =========================== */

.hero-section {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding-top: 5rem;
    padding-bottom: 2rem;
}

.hero-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 3rem;
    align-items: center;
}

@media (min-width: 768px) {
    .hero-grid {
        grid-template-columns: 1fr 1fr;
        gap: 4rem;
    }
}

.hero-content {
    animation: slideInLeft 0.6s ease-out forwards;
}

.hero-title {
    font-size: 3rem;
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 1.5rem;
}

@media (min-width: 768px) {
    .hero-title {
        font-size: 3.75rem;
    }
}

.text-gradient {
    background: linear-gradient(135deg, #6699ff, #4488ff);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 1.5rem;
    color: rgba(255, 255, 255, 0.8);
    font-weight: 600;
    margin-bottom: 1rem;
}

.hero-description {
    font-size: 1.125rem;
    color: rgba(255, 255, 255, 0.6);
    margin-bottom: 2rem;
    line-height: 1.8;
}

.hero-cta {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    margin-bottom: 2rem;
}

@media (min-width: 640px) {
    .hero-cta {
        flex-direction: row;
    }
}

.hero-image {
    animation: slideInRight 0.6s ease-out forwards;
    animation-delay: 0.2s;
}

.hero-image .glass-lg {
    padding: 0.25rem;
    overflow: hidden;
}

.profile-img {
    width: 100%;
    height: auto;
    border-radius: 1.75rem;
    object-fit: cover;
    aspect-ratio: 1;
}

.scroll-indicator {
    position: absolute;
    bottom: 2rem;
    left: 50%;
    transform: translateX(-50%);
    animation: bounce 2s infinite;
}

.scroll-indicator i {
    font-size: 2rem;
    color: rgba(255, 255, 255, 0.5);
}

/* ===========================
   BUTTONS
   =========================== */

.btn {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    border-radius: 0.5rem;
    font-weight: 600;
    text-decoration: none;
    border: none;
    cursor: pointer;
    transition: var(--transition);
    text-align: center;
}

.btn-primary {
    background: linear-gradient(135deg, #2563eb, #1d4ed8);
    color: white;
}

.btn-primary:hover {
    box-shadow: 0 0 20px rgba(37, 99, 235, 0.4);
    transform: translateY(-2px);
}

.btn-secondary {
    background: rgba(255, 255, 255, 0.1);
    color: white;
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.2);
    box-shadow: 0 0 20px rgba(102, 153, 255, 0.3);
    transform: translateY(-2px);
}

/* ===========================
   SOCIAL LINKS
   =========================== */

.social-links {
    display: flex;
    gap: 1rem;
}

.social-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 3rem;
    height: 3rem;
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(16px);
    border: 1px solid rgba(255, 255, 255, 0.15);
    border-radius: 0.75rem;
    color: white;
    text-decoration: none;
    font-size: 1.25rem;
    transition: var(--transition);
}

.social-icon:hover {
    background: rgba(255, 255, 255, 0.2);
    box-shadow: 0 0 20px rgba(102, 153, 255, 0.3);
    transform: translateY(-2px);
}

/* ===========================
   FEATURES SECTION
   =========================== */

.features-section {
    padding: 4rem 0;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
}

.feature-card {
    padding: 1.5rem;
    transition: var(--transition);
}

.feature-card:hover {
    box-shadow: 0 0 30px rgba(102, 153, 255, 0.2);
    transform: translateY(-4px);
}

.feature-icon {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.feature-title {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.feature-desc {
    color: rgba(255, 255, 255, 0.6);
    font-size: 0.95rem;
}

/* ===========================
   SECTION STYLES
   =========================== */

.section-padding {
    padding: 5rem 0;
}

.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    text-align: center;
    margin-bottom: 3rem;
}

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

.about-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 2rem;
}

@media (min-width: 768px) {
    .about-grid {
        grid-template-columns: 1fr 1fr;
    }
}

.about-card {
    padding: 2rem;
}

.about-text {
    color: rgba(255, 255, 255, 0.8);
    margin-bottom: 1rem;
    line-height: 1.8;
}

.about-text.muted {
    color: rgba(255, 255, 255, 0.6);
    font-style: italic;
}

.stats-card {
    padding: 2rem;
}

.stat-item {
    margin-bottom: 2rem;
}

.stat-label {
    font-weight: 600;
    margin-bottom: 0.5rem;
    display: block;
}

.stat-value {
    color: #6699ff;
    font-weight: 700;
    float: right;
}

/* ===========================
   PROGRESS BAR
   =========================== */

.progress-bar {
    height: 0.5rem;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 0.25rem;
    overflow: hidden;
    margin-bottom: 0.5rem;
}

.progress-fill {
    height: 100%;
    background: linear-gradient(90deg, #2563eb, #1d4ed8);
    border-radius: 0.25rem;
    transition: width 0.5s ease-out;
}

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

.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
}

.skill-card {
    padding: 1.5rem;
}

.skill-title {
    font-weight: 600;
    margin-bottom: 1rem;
}

/* ===========================
   PORTFOLIO SECTION
   =========================== */

.portfolio-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.project-card {
    overflow: hidden;
    transition: var(--transition);
}

.project-card:hover {
    box-shadow: 0 0 30px rgba(102, 153, 255, 0.2);
    transform: translateY(-4px);
}

.project-image {
    width: 100%;
    height: 12rem;
    background-size: cover;
    background-position: center;
    transition: var(--transition);
}

.project-card:hover .project-image {
    transform: scale(1.1);
}

.project-body {
    padding: 1.5rem;
}

.project-title {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.project-desc {
    color: rgba(255, 255, 255, 0.6);
    margin-bottom: 1rem;
    font-size: 0.95rem;
}

.project-link {
    color: #6699ff;
    text-decoration: none;
    font-weight: 600;
    transition: var(--transition);
}

.project-link:hover {
    color: #88bbff;
}

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

.contact-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 2rem;
}

@media (min-width: 768px) {
    .contact-grid {
        grid-template-columns: 1fr 1fr;
    }
}

.contact-info {
    padding: 2rem;
}

.contact-title {
    font-size: 1.75rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
}

.contact-details {
    margin-bottom: 2rem;
}

.contact-item {
    margin-bottom: 1rem;
    color: rgba(255, 255, 255, 0.8);
}

.contact-label {
    font-weight: 600;
    display: block;
    margin-bottom: 0.25rem;
}

.contact-link {
    color: #6699ff;
    text-decoration: none;
    transition: var(--transition);
}

.contact-link:hover {
    color: #88bbff;
}

/* ===========================
   CONTACT FORM
   =========================== */

.contact-form-wrapper {
    padding: 2rem;
}

.form-status {
    margin-bottom: 1.5rem;
    padding: 1rem;
    border-radius: 0.75rem;
    display: none;
    animation: slideDown 0.3s ease-out;
}

.form-status.show {
    display: block;
}

.form-status.success {
    background: rgba(34, 197, 94, 0.2);
    border: 1px solid rgba(34, 197, 94, 0.5);
    color: #86efac;
}

.form-status.error {
    background: rgba(239, 68, 68, 0.2);
    border: 1px solid rgba(239, 68, 68, 0.5);
    color: #fca5a5;
}

.form-status-icon {
    margin-right: 0.5rem;
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.form-group {
    display: flex;
    flex-direction: column;
}

.form-label {
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: rgba(255, 255, 255, 0.8);
}

.form-input {
    padding: 0.75rem 1rem;
    border-radius: 0.5rem;
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
    color: white;
    font-family: inherit;
    font-size: 1rem;
    transition: var(--transition);
}

.form-input::placeholder {
    color: rgba(255, 255, 255, 0.4);
}

.form-input:focus {
    outline: none;
    ring: 2px;
    ring-color: #6699ff;
    box-shadow: 0 0 0 3px rgba(102, 153, 255, 0.1);
}

.form-textarea {
    resize: none;
    min-height: 8rem;
}

.form-actions {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    margin-top: 1rem;
}

@media (min-width: 640px) {
    .form-actions {
        flex-direction: row;
    }
}

.form-actions .btn {
    flex: 1;
}

/* ===========================
   FOOTER
   =========================== */

.site-footer {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    background: rgba(255, 255, 255, 0.05);
    backdrop-filter: blur(20px);
    padding: 2rem 0;
}

.footer-text {
    text-align: center;
    color: rgba(255, 255, 255, 0.6);
    font-size: 0.95rem;
}

/* ===========================
   ANIMATIONS
   =========================== */

@keyframes slideInLeft {
    from {
        opacity: 0;
        transform: translateX(-30px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes slideInRight {
    from {
        opacity: 0;
        transform: translateX(30px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

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

.scroll-reveal {
    opacity: 0;
    animation: fadeInUp 0.6s ease-out forwards;
}

.scroll-reveal.visible {
    animation: fadeInUp 0.6s ease-out forwards;
}

.delay-100 {
    animation-delay: 100ms;
}

.delay-200 {
    animation-delay: 200ms;
}

.delay-300 {
    animation-delay: 300ms;
}

/* ===========================
   RESPONSIVE DESIGN
   =========================== */

@media (max-width: 640px) {
    .hero-title {
        font-size: 2rem;
    }

    .hero-subtitle {
        font-size: 1.25rem;
    }

    .section-title {
        font-size: 1.875rem;
    }

    .contact-title {
        font-size: 1.5rem;
    }
}