/* main.css - Global Styles */

/* Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* Color Scheme - Light Mode */
    --primary-color: #84e3af;
    --secondary-color: #08505d;
    --accent-color: #044328;
    --text-primary: #333333;
    --text-secondary: #666666;
    --text-light: #999999;
    --bg-primary: #ffffff;
    --bg-secondary: #f8f9fa;
    --bg-dark: #1a1a1a;
    --box-background: rgb(255 255 255 / 55%);
    --animation-circle:radial-gradient(circle, rgb(69 139 165 / 40%) 0%, #175f2d12 70%);
    --icons-background: linear-gradient(135deg, #3e83706e, #cfcfcf66);
    --animation-time:skills-rotate 40s linear infinite;
    /* Chat widget palette */
    --chat-surface-color: rgba(1, 1, 3, 0.94);
    --chat-border-color: rgba(132, 227, 175, 0.24);
    --chat-divider-color: rgba(132, 227, 175, 0.18);
    --chat-input-bg-color: rgba(8, 80, 93, 0.16);
    --chat-user-bg-color: var(--secondary-color);
    --chat-user-fg-color: #ffffff;
    --chat-bot-bg-color: #010103;
    --chat-bot-fg-color: #ffffff;
    --chat-overlay-color: rgba(0, 0, 0, 0.55);
    --scrollbar-track-color: rgba(8, 80, 93, 0.12);
    --scrollbar-thumb-color: rgba(8, 80, 93, 0.55);
    --scrollbar-thumb-hover: rgba(132, 227, 175, 0.75);
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 3rem;
    --spacing-xl: 4rem;
    
    /* Font Sizes */
    --font-xs: 0.75rem;
    --font-sm: 0.875rem;
    --font-base: 1rem;
    --font-lg: 1.125rem;
    --font-xl: 1.25rem;
    --font-2xl: 1.5rem;
    --font-3xl: 2rem;
    --font-4xl: 2.5rem;
    --font-5xl: 3rem;
    
    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-base: 0.3s ease;
    --transition-slow: 0.5s ease;
    
    /* Shadows */
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px rgba(0, 0, 0, 0.1);
}

/* Dark Mode Variables */
.dark-mode {
    --text-primary: #e0e0e0;
    --text-secondary: #b0b0b0;
    --text-light: #808080;
    --bg-primary: #194336;
    --bg-secondary: #010103;
    --bg-dark: #000000;
    --box-background: rgba(0, 0, 0, 0.164);
    --icons-background: linear-gradient(135deg, var(--bg-secondary) 0%, var(--bg-primary) 100%);


    /* Adjusted shadows for dark mode */
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.3);
    --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.3);
    --shadow-xl: 0 20px 25px rgba(0, 0, 0, 0.3);
    --chat-surface-color: rgba(0, 0, 0, 0.94);
    --chat-border-color: rgba(132, 227, 175, 0.32);
    --chat-divider-color: rgba(132, 227, 175, 0.24);
    --chat-input-bg-color: rgba(8, 80, 93, 0.25);
    --chat-user-bg-color: var(--secondary-color);
    --chat-user-fg-color: #ffffff;
    --chat-bot-bg-color: #010103;
    --chat-bot-fg-color: #ffffff;
    --chat-overlay-color: rgba(0, 0, 0, 0.65);
    --scrollbar-track-color: rgba(132, 227, 175, 0.08);
    --scrollbar-thumb-color: rgba(132, 227, 175, 0.55);
    --scrollbar-thumb-hover: rgba(132, 227, 175, 0.75);
}

/* Global Styles */
html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: 'Poppins', sans-serif;
    line-height: 1.6;
    color: var(--text-primary);
    background-color: var(--bg-secondary);
    overflow-x: hidden;
    scrollbar-width: thin;
    scrollbar-color: var(--scrollbar-thumb-color) transparent;
}

body::-webkit-scrollbar {
    width: 10px;
}

body::-webkit-scrollbar-track {
    background: var(--scrollbar-track-color);
    border-radius: 999px;
}

body::-webkit-scrollbar-thumb {
    background: linear-gradient(180deg, var(--secondary-color), var(--primary-color));
    border-radius: 999px;
    border: 2px solid rgba(0, 0, 0, 0);
}

body::-webkit-scrollbar-thumb:hover {
    background: linear-gradient(180deg, var(--primary-color), var(--secondary-color));
}

body::-webkit-scrollbar-corner {
    background: transparent;
}

/* Container */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

/* Section Spacing */
section {
    padding: var(--spacing-xl) 0;
    /* Prevent decorative ::before backgrounds from bleeding into neighbors */
    position: relative;
    isolation: isolate;
}

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

.section-title {
    font-size: var(--font-4xl);
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: var(--spacing-sm);
    position: relative;
    display: inline-block;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 4px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    border-radius: 2px;
}

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

/* Buttons */
.btn {
    display: inline-block;
    padding: 12px 30px;
    font-size: var(--font-base);
    font-weight: 500;
    text-decoration: none;
    border-radius: 30px;
    transition: var(--transition-base);
    cursor: pointer;
    border: none;
    outline: none;
}

.btn-primary {
    background: linear-gradient(135deg, var(--accent-color), var(--primary-color));
    color: white;
    box-shadow: var(--shadow-md);
}

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

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

.btn-secondary:hover {
    background: var(--primary-color);
    color: white;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    line-height: 1.2;
    margin-bottom: var(--spacing-sm);
}

p {
    margin-bottom: var(--spacing-sm);
}

/* Links */
a {
    color: var(--primary-color);
    text-decoration: none;
    transition: var(--transition-fast);
}

a:hover {
    color: var(--secondary-color);
}

/* Highlight */
.highlight {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

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

/* Responsive Grid System */
.grid {
    display: grid;
    gap: var(--spacing-md);
}

.grid-2 {
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
}

.grid-3 {
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
}

.grid-4 {
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
}

/* Utility Classes */
.text-center { text-align: center; }
.text-left   { text-align: left; }
.text-right  { text-align: right; }

.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); }
.mt-5 { margin-top: var(--spacing-xl); }

.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); }
.mb-5 { margin-bottom: var(--spacing-xl); }

/* Dark Mode Specific Styles */
.dark-mode {
    color-scheme: dark;
}

.dark-mode .navbar {
    background: rgba(26, 26, 26, 0.95);
}

.dark-mode .navbar.scrolled {
    background: rgba(26, 26, 26, 0.98);
}

.dark-mode .skill-category {
    background: var(--box-background);
}

.dark-mode .project-card {
    background: var(--box-background);
}

.dark-mode .stat{
  background:var(--box-background);

}

.dark-mode .contact-item,
.dark-mode .contact-form {
    background: var(--box-background);
}

.dark-mode input,
.dark-mode textarea {
    background: var(--icons-background);
    color: var(--text-primary);
    border-color:#2e7962;
}

.dark-mode input:focus,
.dark-mode textarea:focus {
    border-color: var(--primary-color);
}

/* --- Footer (solid, no seam, no overlaps) ------------------------- */

.footer {
    background: var(--bg-primary);
    color: var(--text-secondary);
    padding: 10px 0;
    border-top: 1px solid rgba(69,139,165,.15);
    box-shadow: none;
    position: relative;   /* keep isolated like sections */
    isolation: isolate;
}

.footer .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
}

.footer p {
    margin: 0;
    color: var(--text-secondary);
}

/* Footer links (icons) */
.footer-links a {
    display: inline-flex;
    width: 36px;
    height: 36px;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--accent-color), var(--primary-color));
    color: #fff;
    margin-left: .4rem;
    transition: var(--transition-base);
    box-shadow: var(--shadow-sm);
}

.footer-links a:hover {
    transform: translateY(-2px);
    filter: brightness(1.05);
}

/* Dark mode tweaks */
.dark-mode .footer {
    background: black;
    border-top: 1px solid rgba(69,139,165,.25);
}

/* Make room for the floating chat icon on small screens */
@media (max-width: 768px) {
    :root {
        --font-3xl: 1.75rem;
        --font-4xl: 2rem;
        --font-5xl: 2.5rem;
    }
    
    section {
        padding: var(--spacing-lg) 0;
    }
    
    .container {
        padding: 0 var(--spacing-sm);
    }

    .footer .container {
        flex-direction: column;
        gap: .75rem;
        text-align: center;
    }

    .footer { padding-bottom: 80px; }
}