@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&family=Fira+Code:wght@400;500&display=swap');

/* 
   ============== MODERN TECH THEME VARIABLES ==============
*/
:root {
    --bg-main: #020617; /* Slate 950 - Deep dark blue/black */
    --bg-secondary: #0f172a; /* Slate 900 */
    --bg-card: rgba(15, 23, 42, 0.6); /* Glass effect base */
    
    --text-primary: #f8fafc; /* Slate 50 */
    --text-secondary: #94a3b8; /* Slate 400 */
    --text-muted: #64748b; /* Slate 500 */
    
    --accent-blue: #38bdf8; /* Sky 400 */
    --accent-blue-glow: rgba(56, 189, 248, 0.4);
    --accent-purple: #c084fc; /* Purple 400 */
    --accent-purple-glow: rgba(192, 132, 252, 0.4);
    
    --border-color: rgba(255, 255, 255, 0.08);
    --border-hover: rgba(255, 255, 255, 0.2);
    
    --glass-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.37);
    --glass-blur: blur(12px);
    
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s 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', sans-serif;
    background-color: var(--bg-main);
    color: var(--text-primary);
    line-height: 1.6;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
    overflow-x: hidden;
    /* Subtle background grid/glow effect */
    background-image: 
        radial-gradient(circle at 15% 50%, rgba(56, 189, 248, 0.05), transparent 25%),
        radial-gradient(circle at 85% 30%, rgba(192, 132, 252, 0.05), transparent 25%);
    background-attachment: fixed;
}

.mono {
    font-family: 'Fira Code', monospace;
}

/* Highlight text selection */
::selection {
    background-color: var(--accent-blue);
    color: var(--bg-main);
}

.wrapper {
    flex: 1;
    display: flex;
    flex-direction: column;
    position: relative;
    z-index: 1;
}

/* Glassmorphism utility */
.glass {
    background: var(--bg-card);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    box-shadow: var(--glass-shadow);
}

/* ==========================================================================
   HEADER & NAVIGATION
   ========================================================================== */
.site-header {
    padding: 2rem;
    max-width: 1200px;
    margin: 0 auto;
    width: 100%;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.back-link {
    text-decoration: none;
    color: var(--text-secondary);
    font-family: 'Fira Code', monospace;
    font-size: 0.9rem;
    font-weight: 500;
    transition: var(--transition-normal);
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}

.back-link:hover {
    color: var(--accent-blue);
    text-shadow: 0 0 8px var(--accent-blue-glow);
    transform: translateX(-5px);
}

/* ==========================================================================
   HOME (INDEX) SPECIFIC
   ========================================================================== */
.home-main {
    display: flex;
    flex-direction: column;
    align-items: center;
    flex: 1;
    justify-content: center;
}

.hero-section {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 4rem 2rem;
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    animation: fadeInDown 1s ease-out forwards;
}

.hero-badge {
    display: inline-block;
    padding: 0.5rem 1rem;
    border-radius: 20px;
    background: rgba(56, 189, 248, 0.1);
    border: 1px solid rgba(56, 189, 248, 0.2);
    color: var(--accent-blue);
    font-size: 0.85rem;
    font-family: 'Fira Code', monospace;
    margin-bottom: 2rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    box-shadow: 0 0 15px var(--accent-blue-glow);
}

.hero-title {
    font-size: 4.5rem;
    font-weight: 700;
    line-height: 1.1;
    margin-bottom: 1.5rem;
    letter-spacing: -1px;
}

/* Animated Gradient Text */
.text-gradient {
    background: linear-gradient(135deg, var(--accent-blue), var(--accent-purple));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-size: 200% 200%;
    animation: gradientShift 5s ease infinite;
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto 3rem;
    font-weight: 300;
}

/* Home Layout: Grid instead of flex for better alignment */
.home-layout {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 2rem;
    width: 100%;
    max-width: 1200px;
    padding: 0 2rem 4rem;
    margin: 0 auto;
}

.hero-image-column {
    border-radius: 24px;
    overflow: hidden;
    position: relative;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.4);
    height: 100%;
    min-height: 400px;
    border: 1px solid var(--border-color);
}

.hero-image-column::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(to top, var(--bg-main) 0%, transparent 100%);
    opacity: 0.8;
}

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

.hero-image-column:hover .hero-image {
    transform: scale(1.05);
}

.hero-links-column {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

/* Modern Link Buttons */
.main-link-btn {
    display: flex;
    align-items: center;
    gap: 1.5rem;
    padding: 1.5rem 2rem;
    color: var(--text-primary);
    text-decoration: none;
    font-size: 1.2rem;
    font-weight: 500;
    transition: all var(--transition-normal);
    position: relative;
    overflow: hidden;
    flex: 1;
}

.main-link-btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 2px;
    height: 100%;
    background: var(--accent-blue);
    transform: scaleY(0);
    transition: transform var(--transition-normal);
    transform-origin: bottom;
}

.main-link-btn:hover {
    background: rgba(255, 255, 255, 0.05);
    border-color: var(--border-hover);
    transform: translateX(10px);
}

.main-link-btn:hover::before {
    transform: scaleY(1);
    box-shadow: 0 0 10px var(--accent-blue);
}

.btn-icon {
    font-size: 1.5rem;
    color: var(--accent-blue);
    transition: var(--transition-normal);
}

.main-link-btn:nth-child(2) .btn-icon {
    color: var(--accent-purple);
}
.main-link-btn:nth-child(2)::before {
    background: var(--accent-purple);
}
.main-link-btn:nth-child(2):hover::before {
    box-shadow: 0 0 10px var(--accent-purple);
}

/* ==========================================================================
   CONTENT PAGES (ABOUT, PROJECTS, CONTACT)
   ========================================================================== */
.content-main {
    max-width: 900px;
    margin: 0 auto;
    padding: 2rem;
    width: 100%;
    animation: fadeIn 0.8s ease-out forwards;
}

.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 3rem;
    position: relative;
    display: inline-block;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 0;
    width: 40px;
    height: 4px;
    background: var(--accent-blue);
    border-radius: 2px;
    box-shadow: 0 0 10px var(--accent-blue-glow);
}

/* Cards */
.card {
    padding: 2.5rem;
    margin-bottom: 2rem;
    transition: transform var(--transition-normal), border-color var(--transition-normal);
}

.card:hover {
    border-color: var(--border-hover);
    transform: translateY(-5px);
}

.card-header {
    display: flex;
    justify-content: space-between;
    align-items: baseline;
    margin-bottom: 1.5rem;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 1rem;
}

.card-title {
    font-size: 1.5rem;
    color: var(--text-primary);
    font-weight: 600;
}

.card-subtitle {
    color: var(--accent-blue);
    font-family: 'Fira Code', monospace;
    font-size: 0.9rem;
}

.card-content {
    color: var(--text-secondary);
    font-size: 1.05rem;
}

.card-content strong {
    color: var(--text-primary);
    font-weight: 600;
}

/* Project Cards */
.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: 2rem;
}

.project-card {
    display: flex;
    flex-direction: column;
    height: 100%;
}

.project-type {
    font-family: 'Fira Code', monospace;
    font-size: 0.8rem;
    color: var(--accent-purple);
    margin-bottom: 0.5rem;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.project-link {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    margin-top: auto;
    padding: 0.8rem 1.5rem;
    background: rgba(255, 255, 255, 0.05);
    color: var(--text-primary);
    text-decoration: none;
    border-radius: 8px;
    font-weight: 500;
    transition: all var(--transition-normal);
    border: 1px solid var(--border-color);
    align-self: flex-start;
}

.project-link:hover {
    background: var(--accent-blue);
    color: var(--bg-main);
    border-color: var(--accent-blue);
    box-shadow: 0 0 15px var(--accent-blue-glow);
    transform: translateY(-2px);
}

/* ==========================================================================
   CONTACT FORM
   ========================================================================== */
.contact-form {
    padding: 3rem;
}

.form-group {
    margin-bottom: 2rem;
    position: relative;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    color: var(--text-secondary);
    font-size: 0.9rem;
    font-weight: 500;
    transition: var(--transition-normal);
}

.form-control {
    width: 100%;
    padding: 1rem 1.2rem;
    background: rgba(0, 0, 0, 0.2);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    color: var(--text-primary);
    font-family: inherit;
    font-size: 1rem;
    transition: all var(--transition-normal);
}

.form-control:focus {
    outline: none;
    border-color: var(--accent-blue);
    background: rgba(0, 0, 0, 0.4);
    box-shadow: 0 0 0 3px rgba(56, 189, 248, 0.1);
}

.form-control:focus + label {
    color: var(--accent-blue);
}

.form-control::placeholder {
    color: var(--text-muted);
}

.submit-btn {
    width: 100%;
    padding: 1.2rem;
    background: linear-gradient(135deg, var(--accent-blue), #2563eb);
    color: white;
    border: none;
    border-radius: 8px;
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition-normal);
    box-shadow: 0 4px 15px var(--accent-blue-glow);
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 0.8rem;
}

.submit-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px var(--accent-blue-glow);
    filter: brightness(1.1);
}

/* Form Status Messages */
.form-status {
    margin-top: 1.5rem;
    padding: 1rem;
    border-radius: 8px;
    text-align: center;
    font-weight: 500;
    animation: fadeIn 0.3s ease;
}

.form-status.hidden {
    display: none;
}

.form-status.success {
    background: rgba(34, 197, 94, 0.1);
    color: #4ade80;
    border: 1px solid rgba(34, 197, 94, 0.2);
}

.form-status.error {
    background: rgba(239, 68, 68, 0.1);
    color: #f87171;
    border: 1px solid rgba(239, 68, 68, 0.2);
}

/* ==========================================================================
   FOOTER
   ========================================================================== */
.site-footer {
    border-top: 1px solid var(--border-color);
    padding: 3rem 2rem;
    margin-top: auto;
    position: relative;
    background: rgba(15, 23, 42, 0.3);
    backdrop-filter: blur(5px);
}

.footer-content {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1.5rem;
}

.footer-nav ul {
    list-style: none;
    display: flex;
    gap: 2.5rem;
    flex-wrap: wrap;
    justify-content: center;
}

.footer-nav a {
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 500;
    font-size: 0.95rem;
    transition: var(--transition-normal);
    position: relative;
}

.footer-nav a:hover,
.footer-nav a.active {
    color: var(--text-primary);
}

.footer-nav a.active::after {
    content: '';
    position: absolute;
    bottom: -6px;
    left: 0;
    width: 100%;
    height: 2px;
    background: var(--accent-blue);
    border-radius: 2px;
}

.social-links {
    display: flex;
    gap: 1.5rem;
}

.social-link {
    color: var(--text-secondary);
    font-size: 1.5rem;
    transition: var(--transition-normal);
    display: flex;
    align-items: center;
    justify-content: center;
    width: 45px;
    height: 45px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--border-color);
}

.social-link:hover {
    color: #0077b5; /* LinkedIn Color */
    background: rgba(255, 255, 255, 0.08);
    transform: translateY(-3px);
    box-shadow: 0 5px 15px rgba(0, 119, 181, 0.2);
    border-color: rgba(0, 119, 181, 0.5);
}

.copyright {
    color: var(--text-muted);
    font-size: 0.85rem;
    font-family: 'Fira Code', monospace;
}

/* ==========================================================================
   ANIMATIONS & RESPONSIVE
   ========================================================================== */
@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

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

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

/* Responsive Design */
@media (max-width: 900px) {
    .home-layout {
        grid-template-columns: 1fr;
    }
    
    .hero-title {
        font-size: 3rem;
    }
    
    .hero-image-column {
        min-height: 300px;
    }
}

@media (max-width: 600px) {
    .hero-title {
        font-size: 2.2rem;
    }
    
    .hero-section {
        padding: 2rem 1rem;
    }
    
    .home-layout {
        padding: 0 1rem 2rem;
    }
    
    .card, .contact-form {
        padding: 1.5rem;
    }
    
    .section-title {
        font-size: 2rem;
    }
}