/* ===== CSS VARIABLES ===== */
:root {
    --black: #000000;
    --white: #FFFFFF;
    --gray-900: #0A0A0A;
    --gray-800: #1A1A1A;
    --gray-700: #2D2D2D;
    --gray-500: #808080;
    --gray-300: #B3B3B3;
    --accent-cyan: #00FFFF;
    --accent-purple: #9D4EDD;
    --accent-green: #00FF00;

    --spacing-xs: 8px;
    --spacing-sm: 16px;
    --spacing-md: 24px;
    --spacing-lg: 32px;
    --spacing-xl: 48px;
    --spacing-2xl: 64px;
    --spacing-3xl: 96px;
    --spacing-4xl: 128px;

    --font-heading: 'JetBrains Mono', monospace;
    --font-body: 'IBM Plex Mono', monospace;

    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;

    --border-radius: 2px;
}

/* ===== RESET & BASE ===== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-body);
    background: var(--black);
    color: var(--white);
    line-height: 1.6;
    overflow-x: hidden;
    letter-spacing: 0.02em;
}

::selection {
    background: var(--white);
    color: var(--black);
}

/* ===== SCROLL PROGRESS ===== */
.scroll-progress {
    position: fixed;
    top: 0;
    left: 0;
    width: 0%;
    height: 2px;
    background: linear-gradient(90deg, var(--accent-cyan), var(--accent-purple));
    z-index: 9999;
    transition: width 0.1s linear;
}

/* ===== FLOATING THEME TOGGLE ===== */
.theme-toggle {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background: var(--gray-800);
    border: 2px solid var(--accent-cyan);
    color: var(--accent-cyan);
    cursor: pointer;
    z-index: 9998;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-normal);
    box-shadow: 0 4px 20px rgba(0, 255, 255, 0.3);
}

.theme-toggle:hover {
    transform: scale(1.1) rotate(15deg);
    box-shadow: 0 6px 30px rgba(0, 255, 255, 0.5);
    border-color: var(--accent-purple);
    color: var(--accent-purple);
}

.theme-toggle:active {
    transform: scale(0.95) rotate(0deg);
}

@media (max-width: 768px) {
    .theme-toggle {
        bottom: 20px;
        right: 20px;
        width: 45px;
        height: 45px;
    }
}

/* ===== NAVIGATION ===== */
.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: var(--spacing-md) 0;
    transition: all var(--transition-normal);
}

.nav.scrolled {
    background: rgba(0, 0, 0, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--gray-800);
}

.nav-container {
    max-width: 1440px;
    margin: 0 auto;
    padding: 0 var(--spacing-xl);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-logo {
    font-family: var(--font-heading);
    font-weight: 700;
    font-size: 24px;
    cursor: pointer;
    position: relative;
    transition: all var(--transition-fast);
}

.nav-logo:hover {
    color: var(--accent-cyan);
    text-shadow: 0 0 20px var(--accent-cyan);
}

.nav-menu {
    display: flex;
    gap: var(--spacing-xl);
    list-style: none;
}

.nav-link {
    color: var(--white);
    text-decoration: none;
    position: relative;
    transition: color var(--transition-fast);
    font-size: 14px;
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--accent-cyan);
    transition: width var(--transition-normal);
}

.nav-link:hover {
    color: var(--accent-cyan);
}

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

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 6px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
}

.nav-toggle span {
    width: 24px;
    height: 2px;
    background: var(--white);
    transition: all var(--transition-normal);
}

/* ===== HERO SECTION ===== */
.hero {
    position: relative;
    min-height: 100vh;
    height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.constellation-canvas {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100vh;
    z-index: 0;
}

.scanline {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100vh;
    background: repeating-linear-gradient(
        0deg,
        rgba(255, 255, 255, 0.02) 0px,
        transparent 1px,
        transparent 2px,
        rgba(255, 255, 255, 0.02) 3px
    );
    pointer-events: none;
    z-index: 1;
    animation: scanline 10s linear infinite;
}

@keyframes scanline {
    0% { transform: translateY(0); }
    100% { transform: translateY(20px); }
}

.hero-content {
    position: relative;
    z-index: 3;
    text-align: center;
    max-width: 1000px;
    padding: 0 var(--spacing-xl);
    pointer-events: none;
}

.hero-content * {
    pointer-events: auto;
}

.terminal-prefix {
    font-size: 14px;
    color: var(--accent-green);
    margin-bottom: var(--spacing-md);
    opacity: 0;
    animation: fadeIn 0.5s ease forwards;
}

.hero-title {
    font-family: var(--font-heading);
    font-weight: 700;
    font-size: clamp(48px, 10vw, 120px);
    margin-bottom: var(--spacing-md);
    letter-spacing: 0.05em;
    line-height: 1.1;
    pointer-events: none;
    display: inline-block;
    width: auto;
}

.hero-subtitle {
    font-size: clamp(18px, 2.5vw, 28px);
    color: var(--gray-300);
    margin-bottom: var(--spacing-xl);
    min-height: 40px;
    font-weight: 400;
    pointer-events: none;
    display: inline-block;
    width: auto;
}

.hero-subtitle::after {
    content: '|';
    animation: blink 1s infinite;
    color: var(--accent-cyan);
}

@keyframes blink {
    0%, 50% { opacity: 1; }
    51%, 100% { opacity: 0; }
}

.hero-tags {
    display: flex;
    justify-content: center;
    gap: var(--spacing-sm);
    flex-wrap: wrap;
    margin-bottom: var(--spacing-2xl);
    opacity: 0;
    animation: fadeIn 1s ease 1.5s forwards;
}

.tag {
    padding: var(--spacing-xs) var(--spacing-md);
    background: var(--gray-800);
    border: 1px solid var(--gray-700);
    font-size: 12px;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    transition: all var(--transition-normal);
}

.tag:hover {
    background: var(--gray-700);
    border-color: var(--accent-cyan);
    box-shadow: 0 0 20px rgba(0, 255, 255, 0.2);
    transform: translateY(-2px);
}

.hero-cta {
    display: flex;
    justify-content: center;
    gap: var(--spacing-md);
    flex-wrap: wrap;
    opacity: 0;
    animation: fadeIn 1s ease 2s forwards;
}

.cta-button {
    display: inline-block;
    padding: var(--spacing-sm) var(--spacing-xl);
    background: var(--white);
    color: var(--black);
    text-decoration: none;
    font-family: var(--font-heading);
    font-weight: 700;
    font-size: 14px;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    border: 2px solid var(--white);
    transition: all var(--transition-normal);
    position: relative;
    overflow: hidden;
}

.cta-button.secondary {
    background: transparent;
    color: var(--white);
}

.cta-button::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    background: var(--accent-cyan);
    transform: translate(-50%, -50%);
    transition: width 0.4s ease, height 0.4s ease;
    z-index: -1;
}

.cta-button:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 30px rgba(255, 255, 255, 0.2);
    border-color: var(--accent-cyan);
}

.cta-button:hover::before {
    width: 300px;
    height: 300px;
}

.cta-button.secondary:hover {
    color: var(--black);
}

.cta-button span {
    position: relative;
    z-index: 1;
}

.scroll-indicator {
    position: absolute;
    bottom: var(--spacing-md);
    left: 50%;
    transform: translateX(-50%);
    z-index: 3;
    opacity: 0;
    animation: fadeIn 1s ease 2.5s forwards;
}

@media (max-width: 768px) {
    .scroll-indicator {
        bottom: var(--spacing-sm);
    }
}

.scroll-arrow {
    width: 24px;
    height: 24px;
    border-left: 2px solid var(--white);
    border-bottom: 2px solid var(--white);
    transform: rotate(-45deg);
    animation: bounce 2s infinite;
}

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% { transform: rotate(-45deg) translateY(0); }
    40% { transform: rotate(-45deg) translateY(10px); }
    60% { transform: rotate(-45deg) translateY(5px); }
}

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

/* ===== SECTIONS ===== */
.section {
    padding: var(--spacing-4xl) 0;
    position: relative;
}

.container {
    max-width: 1440px;
    margin: 0 auto;
    padding: 0 var(--spacing-xl);
}

.section-title {
    font-family: var(--font-heading);
    font-weight: 700;
    font-size: clamp(36px, 6vw, 72px);
    margin-bottom: var(--spacing-3xl);
    position: relative;
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.8s ease;
    letter-spacing: 0.05em;
}

.section-title::before {
    content: '//';
    color: var(--gray-700);
    margin-right: var(--spacing-sm);
}

.section-title.visible {
    opacity: 1;
    transform: translateY(0);
}

.section-title.centered {
    text-align: center;
}

/* ===== ABOUT SECTION ===== */
.about {
    background: var(--gray-900);
}

.about-grid {
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    gap: var(--spacing-3xl);
    align-items: start;
}

.about-content {
    opacity: 0;
    transform: translateX(-50px);
    transition: all 0.8s ease;
}

.about-content.visible {
    opacity: 1;
    transform: translateX(0);
}

.about-lead {
    font-size: clamp(20px, 3vw, 28px);
    margin-bottom: var(--spacing-xl);
    color: var(--white);
    line-height: 1.4;
}

.about-text {
    font-size: 16px;
    line-height: 1.8;
    color: var(--gray-300);
    margin-bottom: var(--spacing-lg);
}

.about-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-md);
    margin-top: var(--spacing-2xl);
}

.stat-item {
    text-align: center;
    padding: var(--spacing-lg);
    background: var(--gray-800);
    border: 1px solid var(--gray-700);
    transition: all var(--transition-normal);
}

.stat-item:hover {
    border-color: var(--accent-cyan);
    box-shadow: 0 0 20px rgba(0, 255, 255, 0.1);
    transform: translateY(-4px);
}

.stat-number {
    font-family: var(--font-heading);
    font-size: 48px;
    font-weight: 700;
    margin-bottom: var(--spacing-xs);
    color: var(--accent-cyan);
}

.stat-number::after {
    content: '+';
}

.stat-label {
    font-size: 12px;
    color: var(--gray-500);
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

.about-education {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
    opacity: 0;
    transform: translateX(50px);
    transition: all 0.8s ease 0.2s;
}

.about-education.visible {
    opacity: 1;
    transform: translateX(0);
}

.edu-card {
    padding: var(--spacing-lg);
    background: var(--gray-800);
    border: 1px solid var(--gray-700);
    border-left: 3px solid var(--accent-cyan);
    transition: all var(--transition-normal);
    display: flex;
    gap: var(--spacing-md);
    align-items: flex-start;
}

.edu-card:hover {
    background: var(--gray-700);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
    transform: translateX(8px);
}

.edu-logo-link {
    flex-shrink: 0;
    transition: all var(--transition-normal);
    display: block;
}

.edu-logo {
    width: 50px;
    height: 50px;
    object-fit: contain;
    transition: all var(--transition-normal);
}

.edu-logo-link:hover .edu-logo {
    transform: scale(1.1);
    filter: brightness(1.2);
}

.edu-content {
    flex: 1;
}

.edu-title {
    font-family: var(--font-heading);
    font-size: 16px;
    margin-bottom: var(--spacing-xs);
    font-weight: 700;
}

.edu-school-link {
    text-decoration: none;
    transition: all var(--transition-fast);
}

.edu-school {
    font-size: 14px;
    color: var(--gray-300);
    margin-bottom: var(--spacing-xs);
    transition: all var(--transition-fast);
}

.edu-school-link:hover .edu-school {
    color: var(--accent-cyan);
}

.edu-date {
    font-size: 12px;
    color: var(--gray-500);
    margin-bottom: var(--spacing-sm);
}

.edu-focus {
    font-size: 14px;
    color: var(--accent-cyan);
    font-style: italic;
}

/* ===== EXPERIENCE SECTION ===== */
.experience {
    background: var(--black);
}

.experience-timeline {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-2xl);
}

.exp-card {
    padding: var(--spacing-xl);
    background: var(--gray-900);
    border: 1px solid var(--gray-800);
    border-left: 4px solid var(--accent-cyan);
    transition: all var(--transition-normal);
    opacity: 0;
    transform: translateY(30px);
}

.exp-card.visible {
    opacity: 1;
    transform: translateY(0);
}

.exp-card:hover {
    background: var(--gray-800);
    box-shadow: 0 20px 60px rgba(0, 255, 255, 0.1);
    transform: translateX(8px);
    border-left-color: var(--accent-purple);
}

.exp-header {
    display: flex;
    justify-content: space-between;
    align-items: start;
    margin-bottom: var(--spacing-lg);
    flex-wrap: wrap;
    gap: var(--spacing-md);
}

.exp-title-group {
    display: flex;
    gap: var(--spacing-md);
    align-items: center;
}

.company-logo-link {
    flex-shrink: 0;
    transition: all var(--transition-normal);
    display: block;
}

.company-logo {
    width: 60px;
    height: 60px;
    object-fit: contain;
    border-radius: 8px;
    transition: all var(--transition-normal);
}

.company-logo-link:hover .company-logo {
    transform: scale(1.1);
    filter: brightness(1.2);
    box-shadow: 0 0 20px rgba(0, 255, 255, 0.3);
}

.exp-title {
    font-family: var(--font-heading);
    font-size: 24px;
    font-weight: 700;
    margin-bottom: var(--spacing-xs);
}

.exp-company-link {
    text-decoration: none;
    transition: all var(--transition-fast);
}

.exp-company {
    font-size: 18px;
    color: var(--accent-cyan);
    transition: all var(--transition-fast);
}

.exp-company-link:hover .exp-company {
    color: var(--white);
    text-shadow: 0 0 10px var(--accent-cyan);
}

.exp-meta {
    display: flex;
    flex-direction: column;
    align-items: flex-end;
    gap: var(--spacing-xs);
    text-align: right;
}

.exp-location,
.exp-date {
    font-size: 14px;
    color: var(--gray-500);
}

.exp-highlights {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
}

.highlight-item {
    display: flex;
    gap: var(--spacing-sm);
    align-items: start;
    padding: var(--spacing-sm);
    background: var(--gray-800);
    border-left: 2px solid var(--gray-700);
    transition: all var(--transition-fast);
}

.highlight-item:hover {
    border-left-color: var(--accent-cyan);
    background: var(--gray-700);
}

.highlight-icon {
    width: 20px;
    height: 20px;
    flex-shrink: 0;
    color: var(--accent-cyan);
    stroke-width: 2;
}

.highlight-text {
    font-size: 14px;
    line-height: 1.6;
    color: var(--gray-300);
}

.highlight-text strong {
    color: var(--white);
}

.exp-tech {
    display: flex;
    gap: var(--spacing-sm);
    flex-wrap: wrap;
}

.tech-tag {
    padding: 6px 12px;
    background: var(--gray-800);
    border: 1px solid var(--gray-700);
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--gray-300);
    transition: all var(--transition-fast);
}

.tech-tag:hover {
    background: var(--gray-700);
    border-color: var(--accent-cyan);
    color: var(--accent-cyan);
}

/* ===== SKILLS SECTION ===== */
.skills {
    background: var(--gray-900);
}

.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-xl);
}

.skill-category {
    padding: var(--spacing-xl);
    background: var(--gray-800);
    border: 1px solid var(--gray-700);
    transition: all var(--transition-normal);
    opacity: 0;
    transform: scale(0.95);
}

.skill-category.visible {
    opacity: 1;
    transform: scale(1);
}

.skill-category:hover {
    border-color: var(--accent-cyan);
    box-shadow: 0 10px 40px rgba(0, 255, 255, 0.1);
}

.skill-category-title {
    font-family: var(--font-heading);
    font-size: 18px;
    font-weight: 700;
    margin-bottom: var(--spacing-lg);
    color: var(--accent-cyan);
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

.skill-tags {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
}

.skill-tag {
    padding: 8px 16px;
    background: var(--gray-900);
    border: 1px solid var(--gray-700);
    font-size: 12px;
    transition: all var(--transition-fast);
}

.skill-tag:hover {
    background: var(--gray-700);
    border-color: var(--white);
    color: var(--white);
    transform: translateY(-2px);
}

/* ===== PHILOSOPHY SECTION ===== */
.philosophy {
    background: var(--black);
    text-align: center;
    position: relative;
    overflow: hidden;
}

.philosophy::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image:
        linear-gradient(rgba(0, 255, 255, 0.02) 1px, transparent 1px),
        linear-gradient(90deg, rgba(0, 255, 255, 0.02) 1px, transparent 1px);
    background-size: 50px 50px;
    pointer-events: none;
    animation: gridMove 30s linear infinite;
}

@keyframes gridMove {
    0% { transform: translate(0, 0); }
    100% { transform: translate(50px, 50px); }
}

.philosophy-content {
    max-width: 1000px;
    margin: 0 auto;
    position: relative;
    z-index: 1;
}

.philosophy-title {
    font-family: var(--font-heading);
    font-size: clamp(32px, 6vw, 64px);
    line-height: 1.2;
    margin-bottom: var(--spacing-xl);
    opacity: 0;
    transform: scale(0.9);
    transition: all 0.8s ease;
    letter-spacing: 0.05em;
}

.philosophy-title.visible {
    opacity: 1;
    transform: scale(1);
}

.philosophy-subtitle {
    font-size: clamp(16px, 2.5vw, 20px);
    color: var(--gray-300);
    margin-bottom: var(--spacing-3xl);
    line-height: 1.8;
    opacity: 0;
    transform: translateY(20px);
    transition: all 0.8s ease 0.3s;
}

.philosophy-subtitle.visible {
    opacity: 1;
    transform: translateY(0);
}

.philosophy-list {
    text-align: left;
    max-width: 800px;
    margin: 0 auto;
}

.philosophy-item {
    font-size: 16px;
    margin-bottom: var(--spacing-md);
    color: var(--gray-300);
    opacity: 0;
    transform: translateX(-20px);
    padding: var(--spacing-sm);
    border-left: 2px solid var(--gray-700);
    transition: all var(--transition-normal);
}

.philosophy-item.visible {
    opacity: 1;
    transform: translateX(0);
}

.philosophy-item:hover {
    border-left-color: var(--accent-cyan);
    color: var(--white);
}

/* ===== CONTACT SECTION ===== */
.contact {
    background: var(--gray-900);
    position: relative;
}

.contact::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(circle at 50% 50%, rgba(0, 255, 255, 0.05) 0%, transparent 70%);
    pointer-events: none;
    animation: pulse-glow 4s ease-in-out infinite;
}

@keyframes pulse-glow {
    0%, 100% { opacity: 0.3; }
    50% { opacity: 0.6; }
}

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: var(--spacing-3xl);
    position: relative;
    z-index: 1;
}

.contact-info {
    opacity: 0;
    transform: translateX(-50px);
    transition: all 0.8s ease;
}

.contact-info.visible {
    opacity: 1;
    transform: translateX(0);
}

.contact-lead {
    font-size: 20px;
    color: var(--gray-300);
    margin-bottom: var(--spacing-2xl);
    line-height: 1.6;
}

.contact-details {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.contact-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-md);
    background: var(--gray-800);
    border: 1px solid var(--gray-700);
    border-left: 3px solid var(--gray-700);
    transition: all var(--transition-normal);
    text-decoration: none;
    color: var(--gray-300);
}

.contact-item:hover {
    border-left-color: var(--accent-cyan);
    background: var(--gray-700);
    transform: translateX(8px);
}

.contact-icon {
    width: 24px;
    height: 24px;
    flex-shrink: 0;
    color: var(--accent-cyan);
    stroke-width: 2;
}

.contact-text {
    font-size: 14px;
}

.contact-form-wrapper {
    opacity: 0;
    transform: translateX(50px);
    transition: all 0.8s ease 0.2s;
}

.contact-form-wrapper.visible {
    opacity: 1;
    transform: translateX(0);
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.form-group label {
    font-size: 14px;
    color: var(--accent-green);
    font-family: var(--font-heading);
}

.form-group input,
.form-group textarea {
    background: var(--gray-800);
    border: 1px solid var(--gray-700);
    color: var(--white);
    padding: var(--spacing-md);
    font-family: var(--font-body);
    font-size: 14px;
    transition: all var(--transition-normal);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--accent-cyan);
    box-shadow: 0 0 20px rgba(0, 255, 255, 0.1);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: var(--gray-500);
}

.submit-button {
    padding: var(--spacing-md) var(--spacing-2xl);
    background: var(--white);
    color: var(--black);
    border: 2px solid var(--white);
    font-family: var(--font-heading);
    font-weight: 700;
    font-size: 14px;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    cursor: pointer;
    transition: all var(--transition-normal);
    position: relative;
    overflow: hidden;
}

.submit-button::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    background: var(--accent-cyan);
    transform: translate(-50%, -50%);
    transition: width 0.4s ease, height 0.4s ease;
    z-index: -1;
}

.submit-button:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 30px rgba(255, 255, 255, 0.3);
    border-color: var(--accent-cyan);
}

.submit-button:hover::before {
    width: 400px;
    height: 400px;
}

.submit-button:active {
    transform: scale(0.98);
}

.button-loader {
    display: none;
}

.submit-button.loading .button-text {
    opacity: 0;
}

.submit-button.loading .button-loader {
    display: block;
}

.form-message {
    padding: var(--spacing-md);
    text-align: center;
    display: none;
    font-family: var(--font-heading);
}

.form-message.success {
    display: block;
    color: var(--accent-green);
    border: 1px solid var(--accent-green);
}

.form-message.error {
    display: block;
    color: #ff0000;
    border: 1px solid #ff0000;
}

/* ===== FOOTER ===== */
.footer {
    padding: var(--spacing-2xl) 0;
    background: var(--black);
    border-top: 1px solid var(--gray-800);
    position: relative;
}

.footer::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--accent-cyan), transparent);
    animation: pulse 3s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 0.3; }
    50% { opacity: 0.8; }
}

.footer-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-md);
    text-align: center;
}

.footer-brand {
    font-family: var(--font-heading);
    font-weight: 700;
    font-size: 16px;
    letter-spacing: 0.1em;
}

.footer-tagline {
    color: var(--gray-500);
    font-size: 14px;
}

.heart {
    display: inline-block;
    animation: heartbeat 1.5s infinite;
    color: var(--accent-cyan);
}

@keyframes heartbeat {
    0%, 100% { transform: scale(1); }
    10%, 30% { transform: scale(1.15); }
    20%, 40% { transform: scale(1); }
}

.footer-links {
    display: flex;
    gap: var(--spacing-lg);
    flex-wrap: wrap;
    justify-content: center;
}

.footer-link {
    color: var(--gray-500);
    text-decoration: none;
    font-size: 14px;
    transition: color var(--transition-fast);
    position: relative;
}

.footer-link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 1px;
    background: var(--accent-cyan);
    transition: width var(--transition-normal);
}

.footer-link:hover {
    color: var(--accent-cyan);
}

.footer-link:hover::after {
    width: 100%;
}

/* ===== UTILITY ANIMATIONS ===== */
@keyframes glitch {
    0% { transform: translate(0); }
    20% { transform: translate(-3px, 3px); }
    40% { transform: translate(-3px, -3px); }
    60% { transform: translate(3px, 3px); }
    80% { transform: translate(3px, -3px); }
    100% { transform: translate(0); }
}

.ripple {
    position: absolute;
    border-radius: 50%;
    background: rgba(0, 255, 255, 0.3);
    transform: scale(0);
    animation: ripple-animation 0.6s ease-out;
    pointer-events: none;
}

@keyframes ripple-animation {
    to {
        transform: scale(2);
        opacity: 0;
    }
}

/* ===== RESPONSIVE ===== */
@media (max-width: 1024px) {
    .about-grid,
    .contact-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-2xl);
    }

    .about-stats {
        grid-template-columns: repeat(3, 1fr);
    }

    .skills-grid {
        grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    }

    .exp-meta {
        align-items: flex-start;
        text-align: left;
    }
}

@media (max-width: 768px) {
    .container {
        padding: 0 var(--spacing-md);
    }

    .nav-container {
        padding: 0 var(--spacing-md);
    }

    .nav-menu {
        position: fixed;
        top: 0;
        right: -100%;
        width: 100%;
        height: 100vh;
        background: rgba(0, 0, 0, 0.98);
        backdrop-filter: blur(10px);
        flex-direction: column;
        justify-content: center;
        align-items: center;
        gap: var(--spacing-2xl);
        transition: right var(--transition-normal);
        border-left: 1px solid var(--gray-800);
    }

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

    .nav-toggle {
        display: flex;
        z-index: 1001;
    }

    .nav-toggle.active span:nth-child(1) {
        transform: rotate(45deg) translate(8px, 8px);
    }

    .nav-toggle.active span:nth-child(2) {
        opacity: 0;
    }

    .nav-toggle.active span:nth-child(3) {
        transform: rotate(-45deg) translate(7px, -7px);
    }

    .section {
        padding: var(--spacing-3xl) 0;
    }

    .hero-content {
        padding: 0 var(--spacing-md);
    }

    .hero-cta {
        flex-direction: column;
        width: 100%;
    }

    .cta-button {
        width: 100%;
        text-align: center;
    }

    .about-stats {
        grid-template-columns: 1fr;
    }

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

    .exp-header {
        flex-direction: column;
    }

    .exp-meta {
        align-items: flex-start;
        text-align: left;
    }

    .highlight-item {
        flex-direction: column;
        gap: var(--spacing-xs);
    }

    .philosophy-item {
        font-size: 14px;
    }
}

@media (max-width: 480px) {
    .section-title {
        font-size: clamp(28px, 8vw, 48px);
    }

    .hero-title {
        font-size: clamp(32px, 12vw, 72px);
    }

    .hero-tags {
        gap: var(--spacing-xs);
    }

    .tag {
        font-size: 10px;
        padding: 6px 12px;
    }
}