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

:root {
    --bg-app: #080b11;
    --bg-sidebar: #0f1524;
    --card-bg: rgba(22, 32, 53, 0.45);
    --card-border: rgba(112, 151, 117, 0.15); /* Mint/green tint */
    --accent-color: #23d5ab; /* Vivid Mint/Emerald */
    --accent-blue: #3b82f6; /* Blue for metrics */
    --accent-green: #10b981; /* Green for success */
    --accent-teal: #14b8a6; /* Teal */
    --text-primary: #f3f4f6;
    --text-secondary: #9ca3af;
    --text-muted: #6b7280;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --border-radius-lg: 16px;
    --border-radius-md: 10px;
    --font-primary: 'Outfit', sans-serif;
}

body {
    background-color: var(--bg-app);
    color: var(--text-primary);
    font-family: var(--font-primary);
    line-height: 1.6;
    overflow: hidden;
}

/* App Container Layout */
.app-container {
    display: flex;
    flex-direction: column;
    height: 100vh;
    width: 100vw;
}

/* Sidebar Layout */
.sidebar {
    background-color: var(--bg-sidebar);
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    padding: 1.5rem;
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.sidebar-header .logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.logo-dot {
    width: 10px;
    height: 10px;
    background-color: var(--accent-color);
    border-radius: 50%;
    box-shadow: 0 0 10px var(--accent-color);
}

.sidebar-header h2 {
    font-size: 1.25rem;
    font-weight: 700;
    letter-spacing: 1px;
}

.profile-card {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1rem;
    background: rgba(255, 255, 255, 0.02);
    border-radius: var(--border-radius-md);
    border: 1px solid rgba(255, 255, 255, 0.03);
}

.profile-photo img {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    border: 2px solid var(--accent-color);
    object-fit: cover;
}

.profile-card h3 {
    font-size: 1rem;
    font-weight: 600;
}

.profile-card .title {
    font-size: 0.8rem;
    color: var(--text-secondary);
}

.nav-menu {
    display: flex;
    flex-direction: row;
    gap: 0.5rem;
    overflow-x: auto;
    padding-bottom: 0.5rem;
}

.nav-item {
    background: none;
    border: none;
    color: var(--text-secondary);
    padding: 0.75rem 1rem;
    border-radius: var(--border-radius-md);
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-family: var(--font-primary);
    font-size: 0.9rem;
    font-weight: 500;
    transition: var(--transition);
    white-space: nowrap;
}

.nav-item svg {
    transition: var(--transition);
}

.nav-item:hover {
    color: var(--text-primary);
    background: rgba(255, 255, 255, 0.04);
}

.nav-item.active {
    color: var(--bg-app);
    background-color: var(--accent-color);
    box-shadow: 0 4px 14px rgba(35, 213, 171, 0.3);
}

.nav-item.active svg {
    stroke: var(--bg-app);
}

.sidebar-footer {
    display: none;
}

/* Main Content Area */
.main-content {
    flex: 1;
    padding: 1.5rem;
    overflow-y: auto;
    background: radial-gradient(circle at top right, rgba(35, 213, 171, 0.03), transparent 400px);
}

/* Tab Switch Visibility */
.tab-content {
    display: none;
    opacity: 0;
    transform: translateY(10px);
    transition: opacity 0.4s ease, transform 0.4s ease;
}

.tab-content.active {
    display: block;
    opacity: 1;
    transform: translateY(0);
}

/* Glassmorphism Card Style */
.glass-card {
    background: var(--card-bg);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid var(--card-border);
    border-radius: var(--border-radius-lg);
    padding: 1.5rem;
    margin-bottom: 1.5rem;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.2);
}

/* Section Title styling */
.section-title {
    margin-bottom: 1.5rem;
}

.section-title h2 {
    font-size: 1.75rem;
    font-weight: 700;
}

.section-subtitle {
    font-size: 0.95rem;
    color: var(--text-secondary);
}

/* Hero Section */
.hero-section h1 {
    font-size: 2rem;
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 1rem;
}

.gradient-text {
    background: linear-gradient(135deg, var(--accent-color), #23a6d5);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero-desc {
    color: var(--text-secondary);
    font-size: 1rem;
    margin-bottom: 1.5rem;
}

.about-stats {
    display: flex;
    gap: 1rem;
}

.stat-box {
    flex: 1;
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid rgba(255, 255, 255, 0.04);
    padding: 0.75rem;
    border-radius: var(--border-radius-md);
    text-align: center;
}

.stat-num {
    display: block;
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--accent-color);
}

.stat-lbl {
    font-size: 0.75rem;
    color: var(--text-muted);
}

/* Tech Tags styling */
.tech-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-top: 1rem;
}

.tag {
    background: rgba(35, 213, 171, 0.1);
    color: var(--accent-color);
    padding: 0.4rem 0.8rem;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 500;
    border: 1px solid rgba(35, 213, 171, 0.15);
}

/* Project Cards styling */
.projects-section h2 {
    font-size: 1.35rem;
    margin-bottom: 1rem;
}

.project-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1.25rem;
}

.project-card {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    transition: var(--transition);
}

.project-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.project-icon {
    font-size: 1.5rem;
}

.project-badge {
    background: rgba(255, 255, 255, 0.05);
    color: var(--text-secondary);
    font-size: 0.75rem;
    padding: 0.25rem 0.5rem;
    border-radius: 4px;
}

.project-card h3 {
    font-size: 1.1rem;
    font-weight: 600;
}

.project-card p {
    font-size: 0.9rem;
    color: var(--text-secondary);
    flex-grow: 1;
}

.project-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.4rem;
}

.tag-sm {
    background: rgba(255, 255, 255, 0.04);
    color: var(--text-secondary);
    padding: 0.2rem 0.6rem;
    border-radius: 12px;
    font-size: 0.75rem;
}

.project-links {
    margin-top: 0.5rem;
}

.btn-link {
    color: var(--accent-color);
    text-decoration: none;
    font-size: 0.9rem;
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
}

.btn-link:hover {
    text-decoration: underline;
}

/* Footer Section */
.footer {
    margin-top: 2rem;
}

.footer-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
}

.footer-col h4 {
    font-size: 0.95rem;
    color: var(--text-muted);
    margin-bottom: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.footer-col ul {
    list-style: none;
}

.footer-col li {
    margin-bottom: 0.5rem;
}

.footer-col a {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.9rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    transition: var(--transition);
}

.footer-col a:hover {
    color: var(--accent-color);
}

.icon {
    width: 16px;
    height: 16px;
    fill: currentColor;
    stroke: currentColor;
}

/* Metrics Grid styling (Dashboard) */
.metrics-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.metric-card {
    text-align: center;
    padding: 1.5rem 1rem;
}

.metric-val {
    font-size: 2.25rem;
    font-weight: 700;
    margin-bottom: 0.25rem;
}

.text-gradient-blue {
    background: linear-gradient(135deg, #60a5fa, #3b82f6);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.text-gradient-green {
    background: linear-gradient(135deg, #34d399, #10b981);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.text-gradient-teal {
    background: linear-gradient(135deg, #2dd4bf, #14b8a6);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.metric-lbl {
    font-size: 0.85rem;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

/* Chart Canvas container sizing */
.chart-container {
    padding: 1.5rem;
}

.chart-container h3 {
    font-size: 1.1rem;
    margin-bottom: 1rem;
}

.chart-wrapper {
    position: relative;
    height: 250px;
    width: 100%;
}

/* Playground Layout */
.playground-layout {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1.5rem;
}

.playground-card h3 {
    font-size: 1.15rem;
    margin-bottom: 0.5rem;
    font-weight: 600;
}

.input-intro {
    font-size: 0.85rem;
    color: var(--text-secondary);
    margin-bottom: 1.25rem;
}

.input-group {
    margin-bottom: 1.25rem;
}

.input-group label {
    display: block;
    font-size: 0.9rem;
    font-weight: 500;
    margin-bottom: 0.4rem;
}

.input-group input {
    width: 100%;
    padding: 0.75rem 1rem;
    background: rgba(0, 0, 0, 0.2);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: var(--border-radius-md);
    color: var(--text-primary);
    font-family: var(--font-primary);
    font-size: 0.95rem;
    transition: var(--transition);
}

.input-group input:focus {
    outline: none;
    border-color: var(--accent-color);
    box-shadow: 0 0 8px rgba(35, 213, 171, 0.15);
}

.input-hint {
    display: block;
    font-size: 0.75rem;
    color: var(--text-muted);
    margin-top: 0.25rem;
}

.btn-primary {
    background: var(--accent-color);
    color: var(--bg-app);
    border: none;
    padding: 0.75rem 1.5rem;
    border-radius: var(--border-radius-md);
    font-family: var(--font-primary);
    font-size: 0.95rem;
    font-weight: 700;
    cursor: pointer;
    width: 100%;
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 0.5rem;
    transition: var(--transition);
}

.btn-primary:hover {
    box-shadow: 0 4px 16px rgba(35, 213, 171, 0.4);
    transform: translateY(-1px);
}

.btn-primary:active {
    transform: translateY(0);
}

/* Result Container States */
.result-container {
    display: flex;
    flex-direction: column;
    min-height: 250px;
    justify-content: center;
}

.result-placeholder {
    text-align: center;
    color: var(--text-secondary);
    padding: 2rem;
}

.placeholder-icon {
    font-size: 2.5rem;
    margin-bottom: 0.75rem;
}

.result-placeholder p {
    font-size: 0.9rem;
}

/* Spinner Loader */
.result-loader {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1rem;
    text-align: center;
}

.spinner {
    width: 35px;
    height: 35px;
    border: 3px solid rgba(35, 213, 171, 0.1);
    border-top: 3px solid var(--accent-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

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

/* Result output display */
.result-box {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.result-badge {
    align-self: flex-start;
    background: rgba(35, 213, 171, 0.1);
    color: var(--accent-color);
    font-size: 0.75rem;
    padding: 0.25rem 0.6rem;
    border-radius: 20px;
    font-weight: 600;
    text-transform: uppercase;
}

.result-score-wrapper {
    text-align: center;
}

.result-value {
    font-size: 3.5rem;
    font-weight: 700;
    color: var(--text-primary);
    line-height: 1;
}

.result-score-label {
    font-size: 0.85rem;
    color: var(--text-secondary);
    margin-top: 0.25rem;
}

.confidence-bar-container {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.confidence-label {
    display: flex;
    justify-content: space-between;
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.bar-outer {
    height: 8px;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 4px;
    overflow: hidden;
}

.bar-inner {
    height: 100%;
    background: linear-gradient(90deg, var(--accent-color), #23a6d5);
    border-radius: 4px;
    transition: width 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Error Box display */
.result-error-box {
    padding: 1rem;
    background: rgba(239, 68, 68, 0.05);
    border: 1px solid rgba(239, 68, 68, 0.15);
    border-radius: var(--border-radius-md);
    color: #fca5a5;
}

.error-icon {
    font-size: 2rem;
    margin-bottom: 0.5rem;
}

.result-error-box h4 {
    font-size: 1.05rem;
    margin-bottom: 0.25rem;
}

.result-error-box p {
    font-size: 0.85rem;
    color: var(--text-secondary);
    margin-bottom: 1rem;
}

.error-tip {
    background: rgba(0, 0, 0, 0.15);
    padding: 0.75rem;
    border-radius: 6px;
}

.error-tip h5 {
    font-size: 0.8rem;
    color: var(--text-primary);
    margin-bottom: 0.25rem;
}

.error-tip ol {
    padding-left: 1rem;
    font-size: 0.75rem;
    color: var(--text-secondary);
}

.error-tip li {
    margin-bottom: 0.2rem;
}

.hidden {
    display: none !important;
}

/* Responsive adjustments */
@media (min-width: 768px) {
    .app-container {
        flex-direction: row;
    }

    .sidebar {
        width: 280px;
        height: 100vh;
        border-bottom: none;
        border-right: 1px solid rgba(255, 255, 255, 0.04);
        padding: 2rem 1.5rem;
        gap: 2rem;
        flex-shrink: 0;
    }

    .profile-card {
        flex-direction: column;
        text-align: center;
        padding: 1.5rem 1rem;
    }

    .profile-photo img {
        width: 90px;
        height: 90px;
    }

    .nav-menu {
        flex-direction: column;
        overflow-x: visible;
        gap: 0.4rem;
    }

    .nav-item {
        width: 100%;
    }

    .sidebar-footer {
        display: block;
        margin-top: auto;
        font-size: 0.75rem;
        color: var(--text-muted);
        text-align: center;
    }

    .main-content {
        padding: 3rem;
        height: 100vh;
    }

    .hero-section {
        padding: 2.5rem;
    }

    .hero-section h1 {
        font-size: 2.75rem;
    }

    .hero-desc {
        font-size: 1.1rem;
        max-width: 650px;
    }

    .about-stats {
        max-width: 450px;
    }

    .project-grid {
        grid-template-columns: repeat(3, 1fr);
        gap: 1.5rem;
    }

    .project-card:hover {
        transform: translateY(-5px);
        box-shadow: 0 12px 40px rgba(35, 213, 171, 0.08);
        border-color: rgba(35, 213, 171, 0.3);
    }

    .metrics-grid {
        grid-template-columns: repeat(3, 1fr);
        gap: 1.5rem;
    }

    .chart-wrapper {
        height: 350px;
    }

    .playground-layout {
        grid-template-columns: 1.2fr 1fr;
        gap: 2rem;
    }
}