/**
 * BASE STYLES
 * 
 * This file contains the foundation styles for the portfolio:
 * - CSS Variables
 * - Reset
 * - Typography
 * - Base layout
 * - Dark/light theme variables
 */

/* ======= CSS Variables ======= */
:root {
    /* Light Theme Colors */
    --primary-color: #4361ee; /* Desaturated Blue */
    --primary-color-rgb: 67, 97, 238; /* RGB for Desaturated Blue */
    --secondary-color: #3f37c9; /* Darker Desaturated Blue */
    --accent-color: #4895ef; /* Lighter Desaturated Blue */
    --text-color: #333333; /* Dark Gray */
    --text-color-light: #666666; /* Medium Gray */
    --bg-color: #ffffff; /* White */
    --bg-color-alt: #f9f9f9; /* Light Gray */
    --card-bg: #ffffff; /* White */
    --border-color: #e0e0e0; /* Light Gray */
    --shadow-color: rgba(0, 0, 0, 0.1); /* Soft Shadow */
    --success-color: #4caf50; /* Green */
    
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 3rem;
    --spacing-xl: 5rem;
    
    /* Border Radius */
    --border-radius-sm: 4px;
    --border-radius-md: 8px;
    --border-radius-lg: 16px;
    --border-radius-round: 50%;
    
    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
}

/* ======= Dark Theme Variables ======= */
.dark-theme {
    --primary-color: #4895ef; /* Lighter Desaturated Blue */
    --primary-color-rgb: 72, 149, 239; /* RGB for Lighter Desaturated Blue */
    --secondary-color: #3f8efc; /* Darker Desaturated Blue */
    --accent-color: #5390d9; /* Even Darker Desaturated Blue */
    --text-color: #e0e0e0; /* Light Gray */
    --text-color-light: #b0b0b0; /* Medium-Dark Gray */
    --bg-color: #121212; /* Very Dark Desaturated Blue/Gray */
    --bg-color-alt: #1e1e1e; /* Darker Gray */
    --card-bg: #2a2a2a; /* Dark Gray */
    --border-color: #444444; /* Medium-Dark Gray */
    --shadow-color: rgba(0, 0, 0, 0.5); /* Darker Shadow */
}

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

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

body {
    font-family: 'Poppins', sans-serif;
    background-color: var(--bg-color);
    color: var(--text-color);
    line-height: 1.6;
    transition: background-color var(--transition-normal), color var(--transition-normal);
    overflow-x: hidden;
}

/* ======= Typography ======= */
h1, h2, h3, h4, h5, h6 {
    font-family: 'Poppins', sans-serif;
    color: var(--text-color);
    font-weight: 600;
    line-height: 1.2;
    margin-bottom: var(--spacing-sm);
}

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

a:hover {
    color: var(--secondary-color);
    text-decoration: none;
}

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

/* ======= Layout ======= */
.container {
    width: 90%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-sm);
}

.section {
    padding: var(--spacing-xl) 0;
}

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

.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: var(--spacing-xs);
    color: var(--text-color);
}

.underline {
    width: 60px;
    height: 4px;
    background-color: var(--primary-color);
    margin: 0 auto;
    margin-top: var(--spacing-xs);
}

/* Hide scrollbar but allow scrolling */
.hide-scrollbar {
    -ms-overflow-style: none; /* IE and Edge */
    scrollbar-width: none; /* Firefox */
}

.hide-scrollbar::-webkit-scrollbar {
    display: none; /* Chrome, Safari, Opera */
}

/* ======= Button Base Styles ======= */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.75rem 1.5rem;
    border-radius: var(--border-radius-sm);
    font-weight: 500;
    transition: all var(--transition-fast);
    border: none;
    cursor: pointer;
    font-family: 'Poppins', sans-serif;
    gap: 0.5rem;
}

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

.btn-primary:hover {
    background-color: var(--secondary-color);
    transform: translateY(-2px);
    box-shadow: 0 4px 8px var(--shadow-color);
}

.btn-outline {
    background-color: transparent;
    color: var(--primary-color);
    border: 1px solid var(--primary-color);
}

.btn-outline:hover {
    background-color: var(--primary-color);
    color: white;
    transform: translateY(-2px);
}

/* ======= Image Styles ======= */
img {
    max-width: 100%;
    height: auto;
}