/* =========================================
   Theme: Calm Slate
   Focus: Soft, Calming, High Legibility
========================================= */

:root {
    --bg-main: #0f172a; 
    --bg-card: #1e293b; 
    --bg-nav: rgba(15, 23, 42, 0.85);
    
    --accent-sage: #6ee7b7; 
    --accent-blue: #93c5fd; 
    --accent-muted: #64748b; 
    
    --text-primary: #f8fafc; 
    --text-secondary: #cbd5e1; 
    
    --border-light: #334155; 
    --border-strong: #475569; 
    --radius-lg: 12px;
    --radius-md: 8px;
    
    --font-sans: 'Inter', -apple-system, sans-serif;
    --font-mono: 'JetBrains Mono', monospace;
    
    --shadow-soft: 0 4px 6px -1px rgba(0, 0, 0, 0.2), 0 2px 4px -1px rgba(0, 0, 0, 0.1);
    --shadow-hover: 0 10px 15px -3px rgba(0, 0, 0, 0.3), 0 4px 6px -2px rgba(0, 0, 0, 0.15);
}

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

body {
    background-color: var(--bg-main);
    color: var(--text-primary);
    font-family: var(--font-sans);
    font-weight: 400;
    line-height: 1.7;
    overflow-x: hidden;
}

.bg-ambient {
    position: fixed; top: 0; left: 0; width: 100vw; height: 100vh;
    background: radial-gradient(circle at top right, rgba(147, 197, 253, 0.03), transparent 40%),
                radial-gradient(circle at bottom left, rgba(110, 231, 183, 0.03), transparent 40%);
    z-index: -1; pointer-events: none;
}

/* Navigation */
.glass-nav {
    position: fixed; top: 0; width: 100%; background: var(--bg-nav);
    backdrop-filter: blur(12px); border-bottom: 1px solid var(--border-light); z-index: 100;
}
.nav-container {
    max-width: 1100px; margin: 0 auto; padding: 1rem 2rem;
    display: flex; justify-content: space-between; align-items: center;
}
.logo-link { text-decoration: none; display: flex; align-items: center; }

/* Mobile Menu Button (Hidden on Desktop) */
.mobile-menu-btn {
    display: none; background: none; border: none;
    color: var(--text-primary); font-size: 1.5rem;
    cursor: pointer; transition: color 0.3s;
}
.mobile-menu-btn:hover { color: var(--accent-sage); }

.nav-links { display: flex; gap: 2rem; list-style: none; align-items: center; }
.nav-links a { 
    color: var(--text-secondary); text-decoration: none; 
    font-size: 0.9rem; font-weight: 500; transition: color 0.3s;
}
.nav-links a:hover { color: var(--text-primary); }
.nav-num { color: var(--accent-sage); font-family: var(--font-mono); font-size: 0.8rem; margin-right: 4px; }

/* Buttons */
.btn {
    padding: 0.65rem 1.5rem; border-radius: var(--radius-md); font-weight: 500; font-size: 0.95rem;
    text-decoration: none; transition: all 0.2s ease; display: inline-flex; align-items: center; gap: 0.5rem; cursor: pointer;
}
.primary-btn { background-color: var(--text-primary); color: var(--bg-main); }
.primary-btn:hover { background-color: var(--text-secondary); transform: translateY(-2px); }
.secondary-btn { background-color: transparent; color: var(--text-secondary); border: 1px solid var(--border-strong); }
.secondary-btn:hover { border-color: var(--text-primary); color: var(--text-primary); }
.btn-outline { border: 1px solid var(--border-strong); padding: 0.4rem 1rem; border-radius: var(--radius-md); color: var(--text-secondary) !important; }
.btn-outline:hover { border-color: var(--accent-sage); color: var(--accent-sage) !important; background: rgba(110, 231, 183, 0.05); }

/* Global Sections */
.full-screen { min-height: 100vh; display: flex; align-items: center; }
.section-container { max-width: 1000px; margin: 0 auto; padding: 100px 2rem 40px; }
.section-tag { font-family: var(--font-mono); color: var(--accent-sage); font-size: 0.85rem; margin-bottom: 0.5rem; }
.section-title { font-size: 2.2rem; font-weight: 600; margin-bottom: 1rem; color: var(--text-primary); }
.section-subtitle { color: var(--text-secondary); margin-bottom: 3rem; font-size: 1.05rem; }

/* Grids */
.hero-grid {
    max-width: 1100px; margin: 0 auto; padding: 0 2rem;
    display: grid; grid-template-columns: 1fr 1fr; gap: 4rem; align-items: center;
}
.responsive-grid {
    display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 2rem;
}

/* Hero Content */
.status-badge {
    display: inline-flex; align-items: center; gap: 0.5rem; font-family: var(--font-mono); font-size: 0.85rem; color: var(--text-secondary);
    margin-bottom: 1.5rem; background: var(--bg-card); padding: 0.4rem 0.8rem; border-radius: 20px; border: 1px solid var(--border-light);
}
.pulse-dot { width: 8px; height: 8px; background-color: var(--accent-sage); border-radius: 50%; }
.hero-title { font-size: clamp(2.5rem, 5vw, 4rem); font-weight: 600; line-height: 1.1; margin-bottom: 0.5rem; }
.hero-subtitle { color: var(--accent-blue); font-size: 1.5rem; font-weight: 400; margin-bottom: 1.5rem; }
.hero-desc { color: var(--text-secondary); font-size: 1.1rem; margin-bottom: 2.5rem; max-width: 480px; }
.hero-actions { display: flex; gap: 1rem; margin-bottom: 3rem; flex-wrap: wrap; }
.social-links { display: flex; gap: 1.5rem; }
.social-links a { color: var(--accent-muted); font-size: 1.3rem; transition: color 0.2s; }
.social-links a:hover { color: var(--text-primary); }

/* Animated Avatar */
.hero-image-column { display: flex; justify-content: center; align-items: center; }
.hero-pixel-frame {
    width: 320px; height: 320px; position: relative; background: var(--bg-card); border-radius: var(--radius-lg); padding: 4px; display: flex; align-items: center; justify-content: center; border: 1px solid var(--border-light);
    animation: hero-pixel-shift 4s steps(4) infinite; transition: transform 0.3s ease;
}
.hero-avatar { width: 100%; height: 100%; object-fit: cover; border-radius: calc(var(--radius-lg) - 4px); background-color: var(--bg-card); image-rendering: crisp-edges; image-rendering: pixelated; }

@keyframes hero-pixel-shift {
    0%, 100% { box-shadow: 0 0 0 4px var(--bg-main), 6px 6px 0 0 var(--accent-sage), -6px -6px 0 0 var(--accent-blue); }
    25% { box-shadow: 0 0 0 4px var(--bg-main), -6px 6px 0 0 var(--accent-sage), 6px -6px 0 0 var(--accent-blue); }
    50% { box-shadow: 0 0 0 4px var(--bg-main), -6px -6px 0 0 var(--accent-sage), 6px 6px 0 0 var(--accent-blue); }
    75% { box-shadow: 0 0 0 4px var(--bg-main), 6px -6px 0 0 var(--accent-sage), -6px -6px 0 0 var(--accent-blue); }
}

/* Skills Layout */
.skills-tabs { display: flex; gap: 1rem; margin-bottom: 2rem; flex-wrap: wrap; }
.skill-tab {
    background: var(--bg-card); border: 1px solid var(--border-light); color: var(--text-secondary);
    padding: 0.5rem 1.25rem; border-radius: 20px; font-family: var(--font-mono); font-size: 0.85rem; cursor: pointer; display: flex; align-items: center; gap: 0.5rem;
}
.skill-tab.active { background: rgba(147, 197, 253, 0.1); border-color: var(--accent-blue); color: var(--text-primary); }

.skills-showcase { display: grid; grid-template-columns: 2fr 1fr; gap: 2rem; align-items: stretch; }
.code-window { background: #0f172a; border: 1px solid var(--border-light); border-radius: var(--radius-lg); display: flex; flex-direction: column; overflow: hidden; box-shadow: var(--shadow-soft); }
.code-window-header { display: flex; justify-content: space-between; align-items: center; padding: 0.75rem 1.25rem; background: rgba(15, 23, 42, 0.8); border-bottom: 1px solid var(--border-light); }
.window-controls { display: flex; gap: 6px; }
.control { width: 10px; height: 10px; border-radius: 50%; }
.control.red { background: #ef4444; } .control.yellow { background: #f59e0b; } .control.green { background: #10b981; }
.file-name { font-family: var(--font-mono); color: var(--text-secondary); font-size: 0.85rem; }
.skill-level-badge { background: rgba(147, 197, 253, 0.1); color: var(--accent-blue); padding: 0.2rem 0.6rem; border-radius: 4px; font-size: 0.75rem; font-family: var(--font-mono); }
.code-window-body { display: flex; padding: 1.5rem 0; overflow-x: auto; flex-grow: 1; }
.line-numbers { padding: 0 1rem; text-align: right; color: var(--border-strong); font-family: var(--font-mono); font-size: 0.9rem; line-height: 1.6; border-right: 1px solid var(--border-light); }
.code-window-body pre { margin: 0; padding: 0 1.5rem; }
.code-window-body code { font-family: var(--font-mono); font-size: 0.9rem; color: var(--text-primary); line-height: 1.6; white-space: pre; }

.skills-sidebar { display: flex; flex-direction: column; gap: 1.5rem; }
.sidebar-card { background: var(--bg-card); border: 1px solid var(--border-light); border-radius: var(--radius-lg); padding: 1.5rem; }
.card-label { font-family: var(--font-mono); color: var(--text-secondary); font-size: 0.75rem; letter-spacing: 1px; margin-bottom: 1rem; }
.mastery-value { font-size: 3rem; font-weight: 600; color: var(--accent-blue); line-height: 1; margin-bottom: 1rem; display: flex; align-items: flex-end; }
.mastery-value .percent { font-size: 1.2rem; color: var(--text-secondary); margin-bottom: 0.4rem; margin-left: 0.2rem; }
.progress-track { height: 6px; background: var(--bg-main); border-radius: 10px; margin-bottom: 1rem; overflow: hidden; }
.progress-fill { height: 100%; background: var(--accent-blue); border-radius: 10px; transition: width 0.8s; }
.mastery-desc { color: var(--text-secondary); font-size: 0.85rem; }
.use-case-tags { display: flex; flex-wrap: wrap; gap: 0.5rem; }
.use-case-tags span { background: var(--bg-main); border: 1px solid var(--border-strong); color: var(--text-secondary); padding: 0.4rem 0.8rem; border-radius: 4px; font-size: 0.8rem; }

/* Timeline */
.timeline { position: relative; margin-left: 1rem; }
.timeline::before { content: ''; position: absolute; left: 0; top: 0; width: 2px; height: 100%; background: var(--border-light); }
.timeline-item { position: relative; padding-left: 2.5rem; margin-bottom: 3rem; }
.timeline-dot { position: absolute; left: -5px; top: 8px; width: 12px; height: 12px; border-radius: 50%; background: var(--bg-main); border: 2px solid var(--accent-sage); }
.timeline-card { padding: 0.5rem 0; }
.card-header-flex { display: flex; justify-content: space-between; align-items: flex-start; margin-bottom: 0.5rem; flex-wrap: wrap; gap: 0.5rem;}
.role-title { font-size: 1.15rem; font-weight: 500; color: var(--text-primary); display: flex; align-items: center; flex-wrap: wrap; gap: 0.5rem; }
.badge-current { font-size: 0.65rem; padding: 2px 6px; border-radius: 4px; background: rgba(110, 231, 183, 0.1); color: var(--accent-sage); font-family: var(--font-mono); margin-left: 4px; }
.company-name { color: var(--text-secondary); font-size: 0.95rem; }
.date-text { font-family: var(--font-mono); color: var(--accent-muted); font-size: 0.8rem; }
.role-desc { color: var(--text-secondary); margin-bottom: 1rem; font-size: 0.95rem; max-width: 700px; }
.tech-tags { display: flex; gap: 0.5rem; flex-wrap: wrap; }
.tech-tags span { background: var(--bg-card); border: 1px solid var(--border-light); padding: 3px 8px; border-radius: 4px; font-family: var(--font-mono); font-size: 0.75rem; color: var(--text-secondary); }

/* Basic Code Card */
.code-card { background: var(--bg-card); border: 1px solid var(--border-light); border-radius: var(--radius-md); overflow: hidden; box-shadow: var(--shadow-soft); transition: transform 0.2s; }
.code-card:hover { transform: translateY(-2px); box-shadow: var(--shadow-hover); }

/* Footer */
.footer { border-top: 1px solid var(--border-light); padding: 2rem 0; margin-top: 4rem; }
.footer-container { max-width: 1000px; margin: 0 auto; padding: 0 2rem; display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 1rem;}
.footer p { color: var(--accent-muted); font-size: 0.85rem; }
.footer-socials a { font-size: 1.1rem; }

.fade-in { opacity: 0; transform: translateY(15px); transition: opacity 0.6s ease-out, transform 0.6s ease-out; }
.fade-in.visible { opacity: 1; transform: translateY(0); }


/* ==========================================================
   MOBILE RESPONSIVENESS OVERHAUL (THE FIX FOR THE WHOLE PAGE)
   ========================================================== */
@media (max-width: 900px) {
    /* 1. Navbar & Mobile Menu */
    .mobile-menu-btn { display: block; }
    
    .nav-links {
        position: absolute; top: 100%; left: 0; width: 100%;
        background: var(--bg-nav); backdrop-filter: blur(15px);
        flex-direction: column; padding: 1.5rem 0;
        border-bottom: 1px solid var(--border-light);
        clip-path: polygon(0 0, 100% 0, 100% 0, 0 0);
        transition: clip-path 0.3s ease-in-out;
    }
    .nav-links.active { clip-path: polygon(0 0, 100% 0, 100% 100%, 0 100%); }
    .nav-links li { margin: 1rem 0; text-align: center; }
    .nav-links .btn-outline { margin-left: 0 !important; display: inline-block; margin-top: 0.5rem; }

    /* 2. Hero Section (Stack image and text, center everything) */
    .hero-grid { grid-template-columns: 1fr; gap: 3rem; text-align: center; padding-top: 60px; }
    .hero-text { order: 2; }
    .hero-image-column { order: 1; margin: 0 auto; }
    .hero-pixel-frame { width: 240px; height: 240px; } /* Shrink photo */
    .hero-desc { margin: 0 auto 2.5rem auto; }
    .hero-actions, .social-links { justify-content: center; }
    
    /* Shrink overall page padding for mobile screens */
    .section-container { padding: 70px 1.5rem 30px; }

    /* 3. Skills Interactive Section (Stack code window on top of sidebar) */
    .skills-showcase { grid-template-columns: 1fr; gap: 2rem; }
    .skills-tabs { justify-content: center; }
    .code-window-body pre { padding: 0 1rem; }

    /* 4. Education & Projects Grids (Ensure they don't cause horizontal scroll) */
    .responsive-grid { grid-template-columns: 1fr; }
    
    /* Shrink inline padding inside cards to save mobile screen space */
    .code-card { padding: 1.5rem !important; }

    /* 5. Contact Section */
    .contact-grid { grid-template-columns: 1fr; }

    /* 6. Footer (Center align) */
    .footer-container { justify-content: center; text-align: center; flex-direction: column; }
}

@media (max-width: 450px) {
    /* Super small phones */
    .hero-pixel-frame { width: 200px; height: 200px; }
    .hero-title { font-size: 2.2rem; }
    .mastery-value { font-size: 2.5rem; }
}