/* General Styles */
@import url('https://fonts.googleapis.com/css2?family=Poppins:wght@300;400;600;700&display=swap');

:root {
    /* Light Theme (default) */
    --primary-color-light: #007bff;
    --secondary-color-light: #6c757d;
    --background-color-light: #f8f9fa;
    --text-color-light: #343a40;
    --card-bg-light: #ffffff;
    --header-bg-light: linear-gradient(135deg, var(--primary-color-light), #0056b3);
    --header-text-light: #fff;
    --nav-drawer-bg-light: #2c3e50;
    --nav-drawer-text-light: #ecf0f1;
    --hamburger-color-light: #fff;
    --footer-bg-light: var(--text-color-light);
    --footer-text-light: #ccc;
    --link-color-light: var(--primary-color-light);
    --section-title-color-light: var(--primary-color-light);
    --card-border-color-light: var(--primary-color-light);
    --skill-bg-light: var(--primary-color-light);
    --skill-text-light: #fff;

    /* Dark Theme */
    --primary-color-dark: #00bfff; /* Brighter blue for dark mode */
    --secondary-color-dark: #adb5bd;
    --background-color-dark: #1a1a1a; /* Very dark grey */
    --text-color-dark: #e0e0e0; /* Light grey text */
    --card-bg-dark: #2c2c2c; /* Darker card background */
    --header-bg-dark: linear-gradient(135deg, #1e3c72, #2a5298); /* Dark blue gradient */
    --header-text-dark: #e0e0e0;
    --nav-drawer-bg-dark: #1f2b38; 
    --nav-drawer-text-dark: #d0d0d0;
    --hamburger-color-dark: #e0e0e0;
    --footer-bg-dark: #111111;
    --footer-text-dark: #aaa;
    --link-color-dark: var(--primary-color-dark);
    --section-title-color-dark: var(--primary-color-dark);
    --card-border-color-dark: var(--primary-color-dark);
    --skill-bg-dark: var(--primary-color-dark);
    --skill-text-dark: #1a1a1a;

    /* General */
    --shadow: 0 10px 25px rgba(0, 0, 0, 0.08);
    --shadow-dark: 0 10px 25px rgba(255, 255, 255, 0.05); /* Lighter shadow for dark mode */
    --border-radius: 15px;
    --transition-speed: 0.3s;

    /* NEW Spacing and Font Size Variables */
    --spacing-xs: 0.3rem;
    --spacing-small: 0.6rem;
    --spacing-medium: 1rem;
    --spacing-large: 1.5rem;

    --font-small: 0.9em;
    --font-medium: 1.15em;
    --font-large: 1.3em;
}

body {
    font-family: 'Poppins', sans-serif;
    line-height: 1.7;
    margin: 0;
    padding: 0;
    overflow-x: hidden;
    background-color: var(--background-color-light);
    color: var(--text-color-light);
    transition: background-color var(--transition-speed), color var(--transition-speed);
}

body.dark-mode {
    background-color: var(--background-color-dark);
    color: var(--text-color-dark);
}

.container {
    width: 90%;
    max-width: 1200px;
    margin: auto;
    overflow: hidden;
    padding: 0 20px;
}

/* Header */
header {
    background: var(--header-bg-light);
    color: var(--header-text-light);
    padding: 30px 0 20px;
    text-align: center;
    position: relative;
    border-bottom-left-radius: var(--border-radius);
    border-bottom-right-radius: var(--border-radius);
    transition: background var(--transition-speed), color var(--transition-speed);
}
body.dark-mode header {
    background: var(--header-bg-dark);
    color: var(--header-text-dark);
}

header .profile-photo {
    width: 100px;
    height: 100px;
    border-radius: 50%;
    border: 4px solid #fff;
    margin-bottom: 15px;
    box-shadow: 0 3px 12px rgba(0,0,0,0.15);
    transition: transform var(--transition-speed) ease-out, border-color var(--transition-speed);
}
body.dark-mode header .profile-photo {
    border-color: var(--card-bg-dark);
}
header .profile-photo:hover {
    transform: scale(1.08);
}

header h1 {
    margin: 0 0 5px 0;
    font-size: 2.5em;
    font-weight: 700;
    letter-spacing: 1px;
}

header .subtitle {
    font-size: 1.2em;
    color: var(--header-text-light);
    margin-bottom: 20px;
    font-weight: 300;
    transition: color var(--transition-speed);
}
body.dark-mode header .subtitle {
    color: var(--header-text-dark);
}

/* Header Controls (Nav Toggle and Theme Toggle) */
.header-controls {
    position: absolute;
    top: 20px;
    right: 20px;
    display: flex;
    align-items: center;
    gap: 10px;
    z-index: 1002;
}

/* Original Nav (Desktop - if not using drawer for desktop) */
header nav ul {
    padding: 0;
    list-style: none;
    margin-top: 15px;
}
header nav ul li {
    display: inline;
    padding: 0 20px;
}
header nav a {
    color: var(--header-text-light);
    text-decoration: none;
    text-transform: uppercase;
    font-size: 1em;
    font-weight: 600;
    transition: color var(--transition-speed), border-color var(--transition-speed);
}
header nav a:hover {
    color: var(--primary-color-light);
    border-bottom: 2px solid var(--primary-color-light);
}
body.dark-mode header nav a {
    color: var(--header-text-dark);
}
body.dark-mode header nav a:hover {
    color: var(--primary-color-dark);
    border-bottom-color: var(--primary-color-dark);
}

/* Navigation Drawer Styles */
.nav-drawer {
    display: none; 
    position: fixed; 
    top: 0;
    right: -300px; 
    width: 280px;
    height: 100%;
    background: var(--nav-drawer-bg-light);
    box-shadow: -5px 0 15px rgba(0,0,0,0.2);
    padding-top: 60px; 
    transition: right var(--transition-speed) ease-in-out, background-color var(--transition-speed);
    z-index: 1000;
}
body.dark-mode .nav-drawer {
    background: var(--nav-drawer-bg-dark);
}
.nav-drawer.open {
    right: 0;
    display: block;
}
.nav-drawer ul {
    list-style: none;
    padding: 0;
    margin: 0;
}
.nav-drawer ul li {
    display: block;
}
.nav-drawer ul li a {
    display: block;
    padding: 15px 25px;
    color: var(--nav-drawer-text-light);
    text-decoration: none;
    font-size: 1.1em;
    transition: background-color var(--transition-speed), color var(--transition-speed);
    border-bottom: 1px solid #34495e; /* Adjust if needed */
}
body.dark-mode .nav-drawer ul li a {
    color: var(--nav-drawer-text-dark);
    border-bottom-color: #2a3847;
}
.nav-drawer ul li a:hover {
    background-color: var(--primary-color-light);
    color: #fff;
}
body.dark-mode .nav-drawer ul li a:hover {
    background-color: var(--primary-color-dark);
    color: var(--skill-text-dark); 
}
.nav-drawer .close-btn {
    position: absolute;
    top: 20px;
    right: 20px;
    font-size: 2em;
    color: var(--nav-drawer-text-light);
    cursor: pointer;
    background: none;
    border: none;
}
body.dark-mode .nav-drawer .close-btn {
    color: var(--nav-drawer-text-dark);
}

/* Hamburger Menu Icon */
.nav-toggle {
    display: none; 
    background: transparent;
    border: none;
    cursor: pointer;
    padding: 10px;
    position: static; /* Managed by header-controls flex layout */
    /* z-index already handled by header-controls */
}
.hamburger {
    display: block;
    position: relative;
    width: 25px;
    height: 3px;
    background: var(--hamburger-color-light);
    border-radius: 3px;
    transition: all 0.3s ease-in-out;
}
.hamburger::before, .hamburger::after {
    content: '';
    position: absolute;
    width: 25px;
    height: 3px;
    background: var(--hamburger-color-light);
    border-radius: 3px;
    transition: all 0.3s ease-in-out;
}
body.dark-mode .hamburger, body.dark-mode .hamburger::before, body.dark-mode .hamburger::after {
    background: var(--hamburger-color-dark);
}
.hamburger::before {
    transform: translateY(-8px);
}
.hamburger::after {
    transform: translateY(8px);
}
.nav-toggle.open .hamburger {
    background: transparent;
}
.nav-toggle.open .hamburger::before {
    transform: rotate(45deg) translate(5px, 5px);
}
.nav-toggle.open .hamburger::after {
    transform: rotate(-45deg) translate(5px, -5px);
}

/* Theme Toggle Button */
.theme-toggle {
    background: none;
    border: none;
    cursor: pointer;
    padding: 5px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--hamburger-color-light); /* Same as hamburger for consistency */
    transition: color var(--transition-speed);
}
body.dark-mode .theme-toggle {
    color: var(--hamburger-color-dark);
}
.theme-toggle svg {
    transition: transform 0.3s ease;
}
.theme-toggle .sun-icon { display: none; }
.theme-toggle .moon-icon { display: block; }
body.dark-mode .theme-toggle .sun-icon { display: block; }
body.dark-mode .theme-toggle .moon-icon { display: none; }

/* Overlay for when drawer is open */
.overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0,0,0,0.5);
    z-index: 999;
}
.overlay.open { display: block; }

/* Sections */
.section {
    padding: 60px 0;
    opacity: 0; 
    transform: translateY(30px); 
    transition: opacity 0.8s ease-out, transform 0.8s ease-out;
}
.section.visible { opacity: 1; transform: translateY(0); }

.section h2 {
    text-align: center;
    margin-bottom: 40px;
    color: var(--section-title-color-light);
    font-size: 2.8em;
    font-weight: 700;
    position: relative;
    padding-bottom: 10px;
    transition: color var(--transition-speed);
}
body.dark-mode .section h2 { color: var(--section-title-color-dark); }

.section h2::after {
    content: '';
    display: block;
    width: 60px;
    height: 4px;
    background: var(--section-title-color-light);
    margin: 10px auto 0;
    border-radius: 2px;
    transition: background-color var(--transition-speed);
}
body.dark-mode .section h2::after { background: var(--section-title-color-dark); }

/* Card-like elements */
.card {
    background: var(--card-bg-light);
    padding: 25px;
    margin-bottom: 25px;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
    border-left: 7px solid var(--card-border-color-light);
    transition: transform calc(var(--transition-speed) * 1.5) ease-out, 
                box-shadow calc(var(--transition-speed) * 1.5) ease-out, 
                background-color var(--transition-speed), 
                border-left-color var(--transition-speed);
    will-change: transform, box-shadow; /* Optimization for animations */
}
body.dark-mode .card {
    background: var(--card-bg-dark);
    border-left-color: var(--card-border-color-dark);
    box-shadow: var(--shadow-dark);
}
.card:hover {
    transform: translateY(-10px) scale(1.03); /* More pronounced hover */
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15); /* Enhanced shadow on hover */
}
body.dark-mode .card:hover {
    box-shadow: 0 20px 40px rgba(255, 255, 255, 0.1); /* Enhanced shadow for dark mode */
}

.card h3 {
    margin-top: 0;
    color: var(--link-color-light);
    font-size: 1.6em; /* Default card title size */
    display: flex; 
    align-items: center;
    transition: color var(--transition-speed);
}
body.dark-mode .card h3 { color: var(--link-color-dark); }

.card a {
    color: var(--link-color-light);
    text-decoration: none;
    font-weight: 600;
    transition: color var(--transition-speed);
}
body.dark-mode .card a { color: var(--link-color-dark); }
.card a:hover { text-decoration: underline; }

/* About Section */
#about p {
    font-size: 1.2em;
    text-align: center;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

/* Typing animation effect */
.typing-effect::after {
    content: '_'; /* Cursor character */
    display: inline-block;
    animation: blink-cursor 1s step-end infinite;
    margin-left: 0.1em; /* Small space before cursor */
    font-weight: bold; /* Make cursor more visible */
    position: relative; /* Ensure it aligns well with text */
    /* The color will be inherited from the paragraph text color */
}

@keyframes blink-cursor {
    from, to { opacity: 1; }
    50% { opacity: 0; }
}

/* Experience, Package, Project specific card sizing from previous step */
.job.card, .package.card, .project.card {
    padding: 20px; 
}
.job.card h3, .package.card h3, .project.card h3 {
    font-size: 1.4em; 
}
.project.card p, .package.card p, .job.card p:not(.company-info):not(.dates) {
    font-size: 0.95em; 
}
.job.card .company-info, .job.card .dates {
    font-size: 0.9em;
    color: var(--secondary-color-light);
    transition: color var(--transition-speed);
}
body.dark-mode .job.card .company-info, body.dark-mode .job.card .dates {
    color: var(--secondary-color-dark);
}

.project-logo {
    width: 50px; 
    height: 50px; 
    border-radius: 10px; 
    margin-right: 12px;
    object-fit: cover; 
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
    flex-shrink: 0;
}

/* Skills Section */
#skills .skill-category {
    margin-bottom: var(--spacing-large);
}

#skills .skill-category h3 {
    font-size: var(--font-medium);
    color: var(--primary-color-light);
    margin-bottom: var(--spacing-small);
    padding-bottom: var(--spacing-xs);
    border-bottom: 2px solid var(--primary-color-light);
    display: inline-block;
    transition: color var(--transition-speed), border-bottom-color var(--transition-speed);
}
body.dark-mode #skills .skill-category h3 {
    color: var(--primary-color-dark);
    border-bottom-color: var(--primary-color-dark);
}

#skills .skill-list {
    list-style: none;
    padding: 0;
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-small);
}

#skills .skill-list li {
    background-color: rgba(0, 123, 255, 0.08);
    color: var(--text-color-light);
    padding: var(--spacing-xs) var(--spacing-medium);
    border-radius: 20px;
    font-size: var(--font-small);
    transition: transform 0.2s ease-out, background-color 0.2s ease-out, color 0.2s ease-out, box-shadow 0.2s ease-out;
    box-shadow: 0 2px 4px rgba(0,0,0,0.07);
}
body.dark-mode #skills .skill-list li {
    background-color: rgba(0, 191, 255, 0.12);
    color: var(--text-color-dark);
    box-shadow: 0 2px 4px rgba(0,0,0,0.15);
}

#skills .skill-list li:hover {
    transform: translateY(-3px) scale(1.05);
    background-color: var(--primary-color-light);
    color: var(--skill-text-light);
    box-shadow: 0 4px 8px rgba(0, 123, 255, 0.2);
}
body.dark-mode #skills .skill-list li:hover {
    background-color: var(--primary-color-dark);
    color: var(--skill-text-dark);
    box-shadow: 0 4px 8px rgba(0, 191, 255, 0.25);
}

/* Grid layouts */
.projects-grid, .packages-grid, .experience-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); 
    gap: 25px; 
}

/* Education Section */
.education-item {
    /* Uses .card styling */
}

/* Contact Section */
#contact p {
    text-align: center;
    font-size: 1.2em;
    margin-bottom: 15px;
}
#contact a {
    color: var(--link-color-light);
    text-decoration: none;
    font-weight: 600;
    transition: color var(--transition-speed);
}
body.dark-mode #contact a { color: var(--link-color-dark); }
#contact a:hover { text-decoration: underline; }

.contact-whatsapp a {
    display: inline-block;
    padding: 8px 15px;
    border-radius: 20px;
    background-color: #25D366; /* WhatsApp green */
    color: #fff !important; /* Important to override other link styles if needed */
    text-decoration: none;
    font-weight: 600;
    transition: background-color var(--transition-speed), transform var(--transition-speed);
}

.contact-whatsapp a:hover {
    background-color: #1DAE54; /* Darker WhatsApp green */
    transform: translateY(-2px);
    text-decoration: none;
}

body.dark-mode .contact-whatsapp a {
    /* No specific dark mode changes needed unless you want a different green */
}

/* Contact Form Styles */
.contact-form {
    background: var(--card-bg-light);
    padding: 25px;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
    margin-top: 30px;
    max-width: 600px; /* Limit form width */
    margin-left: auto;
    margin-right: auto;
    border-left: 7px solid var(--card-border-color-light);
    transition: background-color var(--transition-speed), border-left-color var(--transition-speed);
}
body.dark-mode .contact-form {
    background: var(--card-bg-dark);
    border-left-color: var(--card-border-color-dark);
    box-shadow: var(--shadow-dark);
}

.contact-form h3 {
    text-align: center;
    color: var(--section-title-color-light);
    margin-bottom: 20px;
    transition: color var(--transition-speed);
}
body.dark-mode .contact-form h3 {
    color: var(--section-title-color-dark);
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
    color: var(--text-color-light);
    transition: color var(--transition-speed);
}
body.dark-mode .form-group label {
    color: var(--text-color-dark);
}

.form-group input[type="text"],
.form-group input[type="email"],
.form-group textarea {
    width: 100%;
    padding: 12px;
    border: 1px solid #ccc; /* Light border */
    border-radius: 8px;
    background-color: var(--background-color-light);
    color: var(--text-color-light);
    box-sizing: border-box; /* Important for width & padding */
    transition: border-color var(--transition-speed), background-color var(--transition-speed), color var(--transition-speed);
}
body.dark-mode .form-group input[type="text"],
body.dark-mode .form-group input[type="email"],
body.dark-mode .form-group textarea {
    border-color: var(--secondary-color-dark); /* Darker border */
    background-color: var(--card-bg-dark); /* Slightly different from main bg */
    color: var(--text-color-dark);
}

.form-group input[type="text"]:focus,
.form-group input[type="email"]:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color-light);
    box-shadow: 0 0 0 2px rgba(0,123,255,0.25); /* Focus ring */
}
body.dark-mode .form-group input[type="text"]:focus,
body.dark-mode .form-group input[type="email"]:focus,
body.dark-mode .form-group textarea:focus {
    border-color: var(--primary-color-dark);
    box-shadow: 0 0 0 2px rgba(0,191,255,0.25);
}

.btn-submit {
    display: block;
    width: 100%;
    padding: 12px 20px;
    background-color: var(--primary-color-light);
    color: #fff;
    border: none;
    border-radius: 8px;
    font-size: 1.1em;
    font-weight: 600;
    cursor: pointer;
    transition: background-color var(--transition-speed), transform var(--transition-speed);
}
body.dark-mode .btn-submit {
    background-color: var(--primary-color-dark);
    color: var(--skill-text-dark); /* Dark text on bright button for dark mode */
}

.btn-submit:hover {
    background-color: #0056b3; /* Darker shade of primary for light */
    transform: translateY(-2px);
}
body.dark-mode .btn-submit:hover {
    background-color: #00a0cc; /* Darker shade of primary for dark */
}

/* Footer */
footer {
    background: var(--footer-bg-light);
    color: var(--footer-text-light);
    text-align: center;
    padding: 30px 0;
    margin-top: 40px;
    border-top-left-radius: var(--border-radius);
    border-top-right-radius: var(--border-radius);
    transition: background-color var(--transition-speed), color var(--transition-speed);
}
body.dark-mode footer {
    background: var(--footer-bg-dark);
    color: var(--footer-text-dark);
}

/* Animations */
.animate-on-scroll {
    opacity: 0;
    transform: translateY(40px) scale(0.95) rotateX(-10deg); /* More dynamic initial state */
    transform-origin: bottom center;
    transition: opacity 0.7s cubic-bezier(0.645, 0.045, 0.355, 1), 
                transform 0.7s cubic-bezier(0.645, 0.045, 0.355, 1);
    will-change: opacity, transform;
}
.animate-on-scroll.visible {
    opacity: 1;
    transform: translateY(0) scale(1) rotateX(0deg);
}

/* Responsive Design */
@media(max-width: 768px){
    header nav { /* This refers to the original desktop nav structure */
        display: none; /* Hide original desktop nav on mobile */
    }
    .nav-toggle {
        display: block; /* Show hamburger on mobile */
    }
    /* .nav-drawer styles are already mobile-first friendly */

    .header-controls {
        top: 15px; /* Adjusted for smaller header on mobile */
        right: 15px;
        gap: 5px;
    }

    header h1 { font-size: 2.2em; } /* Was 2.5em, let's reduce a bit more */
    header .subtitle { font-size: 1.1em; } /* Was 1.2em */
    .section h2 { font-size: 2.2em; }
    .card h3, .job.card h3, .package.card h3, .project.card h3 {
        font-size: 1.3em; /* Slightly smaller for mobile cards */
    }
    .projects-grid, .packages-grid, .experience-grid {
        grid-template-columns: 1fr; /* Stack cards on mobile */
        gap: 20px;
    }
    .container {
        width: 95%;
    }
} 

/* Loader Styles */
#loader {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: var(--background-color-light); /* Or a specific loader bg */
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 9999; /* Highest z-index */
    opacity: 1;
    transition: opacity 0.8s ease-in-out; /* For fade-out */
}

body.dark-mode #loader {
    background-color: var(--background-color-dark);
}

#loader.hidden {
    opacity: 0;
    pointer-events: none; /* Disable interaction when hidden */
}

.loader-content {
    text-align: center;
}

.loader-title {
    font-size: 2em; 
    color: var(--primary-color-light);
    margin-bottom: 20px; /* Keep or adjust if spinner is above/below */
    font-weight: 600;
    margin-top: 20px; /* Added margin to space from spinner */
}

body.dark-mode .loader-title {
    color: var(--primary-color-dark);
}

/* New Spinner Styles */
.loader-spinner {
    border: 6px solid rgba(0,0,0,0.1); /* Light grey border */
    border-left-color: var(--primary-color-light); /* Accent color for spinner */
    border-radius: 50%;
    width: 60px; /* Spinner size */
    height: 60px; /* Spinner size */
    animation: spin 1s linear infinite;
    margin: 0 auto 20px auto; /* Center spinner and add margin below it */
}

body.dark-mode .loader-spinner {
    border-left-color: var(--primary-color-dark);
    border-right-color: rgba(255,255,255,0.1); /* Adjust other borders if needed for dark mode */
    border-top-color: rgba(255,255,255,0.1);
    border-bottom-color: rgba(255,255,255,0.1);
}

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