/* ============================================
   RJO Portfolio Website - Main Stylesheet
   Design: Modern, Professional with Personality
   Theme: Yellow → Orange → Red (Fire/Phoenix)
   ============================================ */

/* ============================================
   CSS VARIABLES - Design System
   ============================================ */
:root {
    /* Signature Gradient Colors */
    --color-gold: #FFD700;
    --color-orange: #FF8C00;
    --color-red: #FF4500;
    
    /* Background Colors */
    --bg-dark: #0a0a0a;
    --bg-section: #1a1a1a;
    --bg-card: #1f1f1f;
    
    /* Text Colors */
    --text-white: #ffffff;
    --text-muted: #a0a0a0;
    --text-light: #e0e0e0;
    
    /* Gradients */
    --gradient-primary: linear-gradient(135deg, var(--color-gold), var(--color-orange), var(--color-red));
    --gradient-subtle: linear-gradient(135deg, rgba(255, 215, 0, 0.1), rgba(255, 140, 0, 0.1), rgba(255, 69, 0, 0.1));
    --gradient-glow: radial-gradient(circle, rgba(255, 215, 0, 0.3), rgba(255, 140, 0, 0.2), transparent);
    
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 4rem;
    --spacing-xl: 6rem;
    
    /* Typography */
    --font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    --line-height-normal: 1.6;
    --line-height-relaxed: 1.8;
    
    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
    
    /* Shadows */
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.5);
    --shadow-glow: 0 0 30px rgba(255, 140, 0, 0.4);
    
    /* Border Radius */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 20px;
    --radius-full: 50%;
}

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

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: var(--font-family);
    background-color: var(--bg-dark);
    color: var(--text-white);
    line-height: var(--line-height-normal);
    overflow-x: hidden;
}

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

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

ul {
    list-style: none;
}

button {
    font-family: inherit;
    cursor: pointer;
    border: none;
    background: none;
}

/* ============================================
   HEADER & NAVIGATION
   ============================================ */
.main-header {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: transparent;
    transition: background var(--transition-normal);
}

.navbar {
    max-width: 1400px;
    margin: 0 auto;
    padding: 1rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-brand .logo {
    font-size: 1.75rem;
    font-weight: 700;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    transition: transform var(--transition-fast);
}

.nav-brand .logo:hover {
    transform: scale(1.05);
}

.nav-menu {
    display: flex;
    gap: 2rem;
    align-items: center;
}

.nav-link {
    position: relative;
    font-weight: 500;
    transition: color var(--transition-fast);
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--gradient-primary);
    transition: width var(--transition-normal);
}

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

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

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 4px;
}

.hamburger,
.hamburger::before,
.hamburger::after {
    width: 25px;
    height: 3px;
    background: var(--text-white);
    transition: all var(--transition-fast);
}

/* ============================================
   HERO SECTION
   ============================================ */
.hero-section {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-lg) var(--spacing-md);
    overflow: hidden;
    background: var(--bg-dark);
}

.hero-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--gradient-subtle);
    opacity: 0.3;
    animation: subtleMove 20s ease-in-out infinite;
}

@keyframes subtleMove {
    0%, 100% { transform: translate(0, 0) scale(1); }
    50% { transform: translate(2%, 2%) scale(1.05); }
}

.hero-content {
    position: relative;
    z-index: 1;
    text-align: center;
    max-width: 900px;
}

.hero-image-wrapper {
    margin-bottom: var(--spacing-md);
    display: inline-block;
    position: relative;
}

.hero-image {
    width: 200px;
    height: 200px;
    border-radius: var(--radius-full);
    border: 4px solid transparent;
    background: var(--gradient-primary);
    background-origin: border-box;
    background-clip: padding-box, border-box;
    box-shadow: var(--shadow-glow);
    animation: pulse 3s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { transform: scale(1); box-shadow: var(--shadow-glow); }
    50% { transform: scale(1.05); box-shadow: 0 0 50px rgba(255, 140, 0, 0.6); }
}

.hero-image-glow {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 250px;
    height: 250px;
    background: var(--gradient-glow);
    border-radius: var(--radius-full);
    z-index: -1;
    animation: glowPulse 3s ease-in-out infinite;
}

@keyframes glowPulse {
    0%, 100% { opacity: 0.5; transform: translate(-50%, -50%) scale(1); }
    50% { opacity: 0.8; transform: translate(-50%, -50%) scale(1.1); }
}

.hero-title {
    font-size: clamp(2.5rem, 6vw, 4rem);
    font-weight: 700;
    margin-bottom: var(--spacing-sm);
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    animation: fadeInUp 0.8s ease;
}

.hero-subtitle {
    font-size: clamp(1.1rem, 2.5vw, 1.5rem);
    color: var(--text-light);
    margin-bottom: var(--spacing-md);
    animation: fadeInUp 1s ease;
}

.hero-tagline {
    font-size: clamp(1rem, 2vw, 1.25rem);
    color: var(--text-muted);
    margin-bottom: var(--spacing-lg);
    line-height: var(--line-height-relaxed);
    animation: fadeInUp 1.2s ease;
}

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

.hero-cta {
    display: flex;
    gap: var(--spacing-sm);
    justify-content: center;
    flex-wrap: wrap;
    animation: fadeInUp 1.4s ease;
}

.btn {
    padding: 0.875rem 2rem;
    font-size: 1rem;
    font-weight: 600;
    border-radius: var(--radius-sm);
    transition: all var(--transition-normal);
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}

.btn-primary {
    background: var(--gradient-primary);
    color: var(--text-white);
    box-shadow: var(--shadow-sm);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.btn-secondary {
    background: transparent;
    color: var(--text-white);
    border: 2px solid var(--color-orange);
}

.btn-secondary:hover {
    background: rgba(255, 140, 0, 0.1);
    transform: translateY(-2px);
}

.btn-disabled,
.btn:disabled,
.btn.disabled {
    background: var(--bg-card);
    color: var(--text-muted);
    border: 2px solid rgba(160, 160, 160, 0.3);
    cursor: not-allowed;
    opacity: 0.6;
    pointer-events: none;
}

.btn-locked {
    position: relative;
    cursor: not-allowed;
    pointer-events: none;
}

.btn-locked::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(100, 100, 100, 0.7);
    border-radius: inherit;
    z-index: 1;
}

.btn-locked::after {
    content: '\f023';
    font-family: 'Font Awesome 6 Free';
    font-weight: 900;
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    color: white;
    font-size: 1.2rem;
    z-index: 2;
}

.btn-locked:hover {
    transform: none;
}

/* Locked style for project links specifically */
.project-link.locked {
    position: relative;
    cursor: not-allowed;
    pointer-events: none;
}

.project-link.locked::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(58, 57, 57, 0.43);
    border-radius: var(--radius-sm);
    z-index: 1;
}

.project-link.locked::after {
    content: '\f023';
    font-family: 'Font Awesome 6 Free';
    font-weight: 900;
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    color: white;
    font-size: 1.1rem;
    z-index: 2;
}

.project-link.locked:hover {
    background: rgba(255, 140, 0, 0.1);
    transform: none;
}

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

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

.scroll-indicator i {
    font-size: 2rem;
    color: var(--color-orange);
}

/* ============================================
   SECTION STYLES
   ============================================ */
.section {
    position: relative;
    padding: var(--spacing-xl) var(--spacing-md);
    overflow: hidden;
}

.section:nth-child(even) {
    background: var(--bg-section);
}

.section-container {
    max-width: 1200px;
    margin: 0 auto;
}

.section-header {
    text-align: center;
    margin-bottom: var(--spacing-lg);
}

.section-title {
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 700;
    margin-bottom: var(--spacing-sm);
    position: relative;
    display: inline-block;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 4px;
    background: var(--gradient-primary);
    border-radius: 2px;
}

.section-subtitle {
    font-size: 1.125rem;
    color: var(--text-muted);
    max-width: 700px;
    margin: 0 auto;
    line-height: var(--line-height-relaxed);
}

/* ============================================
   ABOUT SECTION
   ============================================ */
.section#about::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        radial-gradient(circle at 10% 20%, rgba(255, 215, 0, 0.08), transparent 30%),
        radial-gradient(circle at 90% 30%, rgba(255, 140, 0, 0.06), transparent 35%),
        radial-gradient(circle at 30% 80%, rgba(255, 69, 0, 0.05), transparent 40%),
        radial-gradient(circle at 70% 70%, rgba(255, 215, 0, 0.04), transparent 35%);
    animation: meshFloat 20s ease-in-out infinite;
    pointer-events: none;
}

.section#about::after {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: repeating-linear-gradient(
        45deg,
        transparent,
        transparent 100px,
        rgba(255, 215, 0, 0.01) 100px,
        rgba(255, 215, 0, 0.01) 102px
    );
    animation: rotateBackground 60s linear infinite;
    pointer-events: none;
    opacity: 0.5;
}

@keyframes meshFloat {
    0%, 100% { 
        transform: translate(0, 0) scale(1); 
        opacity: 1;
    }
    25% { 
        transform: translate(3%, -3%) scale(1.05); 
        opacity: 0.9;
    }
    50% { 
        transform: translate(-2%, 2%) scale(0.98); 
        opacity: 1;
    }
    75% { 
        transform: translate(2%, 3%) scale(1.02); 
        opacity: 0.95;
    }
}

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

.about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-lg);
    align-items: center;
}

.about-image-wrapper {
    position: relative;
}

.about-image {
    width: 100%;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
}

.about-text h3 {
    font-size: 1.75rem;
    margin-bottom: var(--spacing-sm);
    color: var(--color-orange);
}

.about-text p {
    font-size: 1.125rem;
    line-height: var(--line-height-relaxed);
    color: var(--text-light);
    margin-bottom: var(--spacing-sm);
}

.about-text .age {
    font-weight: 600;
    color: var(--color-gold);
}

.about-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-md);
    margin-top: var(--spacing-lg);
}

.stat-card {
    background: var(--bg-card);
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    text-align: center;
    border: 1px solid rgba(255, 140, 0, 0.2);
    transition: all var(--transition-normal);
}

.stat-card:hover {
    transform: translateY(-5px);
    border-color: var(--color-orange);
    box-shadow: var(--shadow-md);
}

.stat-number {
    font-size: 2.5rem;
    font-weight: 700;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    margin-bottom: var(--spacing-xs);
}

.stat-label {
    font-size: 1rem;
    color: var(--text-muted);
}

/* ============================================
   SKILLS SECTION
   ============================================ */
.section#skills::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        linear-gradient(90deg, transparent 0%, rgba(255, 215, 0, 0.03) 25%, transparent 50%, rgba(255, 140, 0, 0.03) 75%, transparent 100%),
        linear-gradient(0deg, transparent 0%, rgba(255, 69, 0, 0.02) 50%, transparent 100%);
    background-size: 200% 200%, 100% 200%;
    animation: gradientShift 18s ease-in-out infinite;
    pointer-events: none;
}

.section#skills::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: 
        linear-gradient(30deg, transparent 12%, rgba(255, 215, 0, 0.02) 12.5%, transparent 12.5%),
        linear-gradient(150deg, transparent 12%, rgba(255, 140, 0, 0.02) 12.5%, transparent 12.5%);
    background-size: 80px 80px;
    animation: geometricSlide 30s linear infinite;
    pointer-events: none;
    opacity: 0.7;
}

@keyframes gradientShift {
    0%, 100% { 
        background-position: 0% 0%, 0% 0%; 
    }
    50% { 
        background-position: 100% 100%, 0% 100%; 
    }
}

@keyframes geometricSlide {
    0% { background-position: 0 0; }
    100% { background-position: 80px 80px; }
}

.skills-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-lg);
    align-items: center;
}

.skills-image {
    width: 100%;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
}

.skills-icon-wrapper {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 400px;
}

.skills-icon-container {
    position: relative;
    width: 300px;
    height: 300px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.skills-icon-container i {
    position: absolute;
    color: var(--color-orange);
    opacity: 0.9;
}

.skills-icon-container .icon-large {
    font-size: 6rem;
    z-index: 5;
    animation: gentlePulse 3s ease-in-out infinite;
}

.skills-icon-container .icon-rotate-1 {
    font-size: 3rem;
    top: 10%;
    left: 15%;
    color: var(--color-gold);
    animation: rotateClockwise 8s linear infinite;
}

.skills-icon-container .icon-rotate-2 {
    font-size: 2.5rem;
    bottom: 15%;
    right: 10%;
    color: var(--color-red);
    animation: rotateCounterClockwise 10s linear infinite;
}

.skills-icon-container .icon-spin {
    font-size: 2rem;
    top: 15%;
    right: 20%;
    color: var(--color-orange);
    animation: spin 6s linear infinite;
}

.skills-icon-container .icon-pulse {
    font-size: 2.8rem;
    bottom: 20%;
    left: 10%;
    color: var(--color-gold);
    animation: iconPulse 2s ease-in-out infinite;
}

.skills-icon-container .icon-float {
    font-size: 3.5rem;
    top: 50%;
    right: 5%;
    color: var(--color-red);
    animation: float 4s ease-in-out infinite;
}

@keyframes gentlePulse {
    0%, 100% { transform: scale(1); opacity: 0.9; }
    50% { transform: scale(1.1); opacity: 1; }
}

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

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

@keyframes spin {
    0% { transform: rotate(0deg) scale(1); }
    50% { transform: rotate(180deg) scale(1.2); }
    100% { transform: rotate(360deg) scale(1); }
}

@keyframes iconPulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.15); }
}

@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-20px); }
}

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

.skill-category h3 {
    font-size: 1.5rem;
    margin-bottom: var(--spacing-sm);
    color: var(--color-orange);
}

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

.skill-tag {
    background: var(--bg-card);
    padding: 0.5rem 1rem;
    border-radius: 20px;
    font-size: 0.9rem;
    border: 1px solid rgba(255, 140, 0, 0.2);
    transition: all var(--transition-fast);
}

.skill-tag:hover {
    background: rgba(255, 140, 0, 0.1);
    border-color: var(--color-orange);
    transform: scale(1.05);
}

.skills-cta {
    margin-top: var(--spacing-md);
}

/* ============================================
   COMPANY SECTION
   ============================================ */
.section#company::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(ellipse at 50% 20%, rgba(255, 140, 0, 0.08), transparent 60%),
                radial-gradient(ellipse at 50% 80%, rgba(255, 69, 0, 0.08), transparent 60%);
    animation: pulseGlow 10s ease-in-out infinite;
    pointer-events: none;
}

@keyframes pulseGlow {
    0%, 100% { opacity: 0.5; transform: scale(1); }
    50% { opacity: 0.8; transform: scale(1.1); }
}

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

.company-logo {
    font-size: 3rem;
    font-weight: 700;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    margin-bottom: var(--spacing-md);
}

.company-tagline {
    font-size: 1.25rem;
    color: var(--text-light);
    margin-bottom: var(--spacing-md);
    font-style: italic;
}

.company-description {
    font-size: 1.125rem;
    line-height: var(--line-height-relaxed);
    color: var(--text-light);
    margin-bottom: var(--spacing-lg);
}

.company-website {
    display: inline-block;
    font-size: 1.25rem;
    color: var(--color-orange);
    margin-bottom: var(--spacing-lg);
    transition: color var(--transition-fast);
}

.company-website:hover {
    color: var(--color-gold);
}

/* ============================================
   CONTACT FORM
   ============================================ */
.contact-form {
    max-width: 600px;
    margin: 0 auto;
}

.form-group {
    margin-bottom: var(--spacing-md);
}

.form-group label {
    display: block;
    margin-bottom: var(--spacing-xs);
    font-weight: 600;
    color: var(--text-light);
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 0.875rem;
    background: var(--bg-card);
    border: 1px solid rgba(255, 140, 0, 0.2);
    border-radius: var(--radius-sm);
    color: var(--text-white);
    font-family: inherit;
    font-size: 1rem;
    transition: border-color var(--transition-fast);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--color-orange);
}

.form-group textarea {
    resize: vertical;
    min-height: 150px;
}

.form-submit {
    width: 100%;
}

/* ============================================
   FOOTER
   ============================================ */
.rainbow-line {
    height: 3px;
    background: linear-gradient(90deg, 
        #FFD700, #FF8C00, #FF4500, #FF1493, 
        #9400D3, #4B0082, #0000FF, #00FF00, 
        #FFFF00, #FFD700);
    background-size: 200% 100%;
    animation: rainbowMove 5s linear infinite;
}

@keyframes rainbowMove {
    0% { background-position: 0% 50%; }
    100% { background-position: 200% 50%; }
}

.main-footer {
    background: var(--bg-section);
    color: var(--text-light);
}

.footer-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: var(--spacing-lg) var(--spacing-md);
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-lg);
}

.footer-title {
    font-size: 1.25rem;
    margin-bottom: var(--spacing-sm);
    color: var(--text-white);
}

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

.footer-links a {
    color: var(--text-muted);
    transition: color var(--transition-fast);
}

.footer-links a:hover {
    color: var(--color-orange);
}

.social-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-sm);
    max-width: 200px;
}

.social-link {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 50px;
    height: 50px;
    background: var(--bg-card);
    border-radius: var(--radius-sm);
    font-size: 1.25rem;
    transition: all var(--transition-fast);
    border: 1px solid rgba(255, 140, 0, 0.2);
}

.social-link:hover {
    background: var(--gradient-primary);
    transform: translateY(-3px);
    box-shadow: var(--shadow-md);
}

.footer-text {
    color: var(--text-muted);
    line-height: var(--line-height-relaxed);
}

.footer-website {
    display: inline-block;
    color: var(--color-orange);
    font-weight: 600;
    margin-top: var(--spacing-xs);
    transition: color var(--transition-fast);
}

.footer-website:hover {
    color: var(--color-gold);
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding: var(--spacing-md);
    text-align: center;
    color: var(--text-muted);
    font-size: 0.9rem;
}

.footer-credits {
    margin-top: var(--spacing-xs);
}

/* ============================================
   PROJECTS PAGE
   ============================================ */
.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: var(--spacing-md);
    margin-top: var(--spacing-lg);
}

.project-card {
    background: var(--bg-card);
    border-radius: var(--radius-md);
    overflow: hidden;
    border: 1px solid rgba(255, 140, 0, 0.2);
    transition: all var(--transition-normal);
}

.project-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-lg);
    border-color: var(--color-orange);
}

.project-image {
    width: 100%;
    height: 200px;
    object-fit: cover;
}

.project-image-placeholder {
    width: 100%;
    height: 200px;
    background: linear-gradient(135deg, rgba(255, 215, 0, 0.1), rgba(255, 140, 0, 0.1), rgba(255, 69, 0, 0.1));
    display: flex;
    align-items: center;
    justify-content: center;
    flex-direction: column;
    gap: 1rem;
    position: relative;
    overflow: hidden;
}

.project-image-placeholder::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: 
        repeating-linear-gradient(45deg, transparent, transparent 10px, rgba(255, 140, 0, 0.03) 10px, rgba(255, 140, 0, 0.03) 20px);
    animation: slidePattern 20s linear infinite;
}

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

.project-image-placeholder i {
    font-size: 3rem;
    color: var(--color-orange);
    opacity: 0.5;
    z-index: 1;
}

.project-image-placeholder span {
    color: var(--text-muted);
    font-size: 0.875rem;
    z-index: 1;
}

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

.project-title {
    font-size: 1.5rem;
    margin-bottom: var(--spacing-xs);
    color: var(--text-white);
}

.project-description {
    color: var(--text-muted);
    line-height: var(--line-height-relaxed);
    margin-bottom: var(--spacing-sm);
}

.project-tags {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-xs);
    margin-bottom: var(--spacing-sm);
}

.project-tag {
    background: rgba(255, 140, 0, 0.1);
    color: var(--color-orange);
    padding: 0.25rem 0.75rem;
    border-radius: 12px;
    font-size: 0.875rem;
}

.project-links {
    display: flex;
    gap: var(--spacing-sm);
}

.project-link {
    flex: 1;
    text-align: center;
    padding: 0.625rem;
    background: rgba(255, 140, 0, 0.1);
    border-radius: var(--radius-sm);
    transition: all var(--transition-fast);
}

.project-link:hover {
    background: var(--gradient-primary);
}

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

/* Tablet */
@media (max-width: 1199px) {
    :root {
        --spacing-lg: 3rem;
        --spacing-xl: 4rem;
    }
    
    .about-content,
    .skills-content {
        grid-template-columns: 1fr;
    }
}

/* Mobile */
@media (max-width: 767px) {
    :root {
        --spacing-md: 1.5rem;
        --spacing-lg: 2rem;
        --spacing-xl: 3rem;
    }
    
    .navbar {
        padding: 1rem;
    }
    
    .nav-menu {
        position: fixed;
        left: -100%;
        top: 70px;
        flex-direction: column;
        background: rgba(10, 10, 10, 0.95);
        width: 100%;
        text-align: center;
        transition: left var(--transition-normal);
        padding: 2rem 0;
        box-shadow: var(--shadow-lg);
    }
    
    .nav-menu.active {
        left: 0;
    }
    
    .nav-toggle {
        display: flex;
    }
    
    .hero-image {
        width: 150px;
        height: 150px;
    }
    
    .hero-image-glow {
        width: 200px;
        height: 200px;
    }
    
    .hero-cta {
        flex-direction: column;
        align-items: stretch;
    }
    
    .btn {
        width: 100%;
        justify-content: center;
    }
    
    .about-stats {
        grid-template-columns: 1fr;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .social-grid {
        margin: 0 auto;
    }
    
    .projects-grid {
        grid-template-columns: 1fr;
    }
}

/* ============================================
   UTILITY CLASSES
   ============================================ */
.text-gradient {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

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

.mt-1 { margin-top: var(--spacing-xs); }
.mt-2 { margin-top: var(--spacing-sm); }
.mt-3 { margin-top: var(--spacing-md); }
.mt-4 { margin-top: var(--spacing-lg); }

.mb-1 { margin-bottom: var(--spacing-xs); }
.mb-2 { margin-bottom: var(--spacing-sm); }
.mb-3 { margin-bottom: var(--spacing-md); }
.mb-4 { margin-bottom: var(--spacing-lg); }

/* ============================================
   ANIMATIONS
   ============================================ */
.fade-in {
    animation: fadeIn 0.6s ease;
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

.slide-in-left {
    animation: slideInLeft 0.8s ease;
}

@keyframes slideInLeft {
    from {
        opacity: 0;
        transform: translateX(-50px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

.slide-in-right {
    animation: slideInRight 0.8s ease;
}

@keyframes slideInRight {
    from {
        opacity: 0;
        transform: translateX(50px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}