/* Light/Dark Theme Variables */
:root {
    --bg-primary: #ffffff;
    --bg-secondary: #f9fafb;
    --bg-card: #ffffff;
    --bg-nav: rgba(255, 255, 255, 0.9);
    --bg-footer: #f3f4f6;
    --text-primary: #111827;
    --text-secondary: #6b7280;
    --text-tertiary: #9ca3af;
    --border-color: #e5e7eb;
    --input-bg: #ffffff;
    --input-border: #d1d5db;
    --nav-link: #6b7280;
    --nav-link-hover: #4f46e5;
}

.dark {
    --bg-primary: #111827;
    --bg-secondary: rgba(31, 41, 55, 0.5);
    --bg-card: #1f2937;
    --bg-nav: rgba(17, 24, 39, 0.9);
    --bg-footer: #0f172a;
    --text-primary: #e5e7eb;
    --text-secondary: #9ca3af;
    --text-tertiary: #6b7280;
    --border-color: #374151;
    --input-bg: #374151;
    --input-border: #4b5563;
    --nav-link: #9ca3af;
    --nav-link-hover: #ffffff;
}

body {
    font-family: 'Poppins', sans-serif;
    background-color: var(--bg-primary);
    color: var(--text-primary);
    transition: background-color 0.3s ease, color 0.3s ease;
}

/* Theme-based text classes */
.primary-text {
    color: var(--text-primary);
}

.secondary-text {
    color: var(--text-secondary);
}

.tertiary-text {
    color: var(--text-tertiary);
}

/* Theme-based background classes */
.section-bg-alt {
    background-color: var(--bg-secondary);
}

.card-bg {
    background-color: var(--bg-card);
}

.nav-bg {
    background-color: var(--bg-nav);
}

/* Navigation links */
.nav-link {
    color: var(--nav-link);
}

.nav-link:hover {
    color: var(--nav-link-hover);
}

/* Footer background */
.footer-bg {
    background-color: var(--bg-footer);
}

.gradient-text {
    background: linear-gradient(90deg, #818cf8, #f472b6);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.skill-card, .project-card, .testimonial-card {
    background-color: var(--bg-card);
    transition: transform 0.3s, box-shadow 0.3s, background-color 0.3s;
    border: 1px solid var(--border-color);
}

.skill-card:hover, .project-card:hover, .testimonial-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.2), 0 10px 10px -5px rgba(0, 0, 0, 0.1);
}

.form-input {
    background-color: var(--input-bg);
    border: 1px solid var(--input-border);
    color: var(--text-primary);
    transition: border-color 0.3s, background-color 0.3s;
}

.form-input:focus {
    border-color: #818cf8;
    outline: none;
    box-shadow: 0 0 0 2px rgba(129, 140, 248, 0.5);
}

.form-input::placeholder {
    color: var(--text-secondary);
}

/* Custom Cursor */
.custom-cursor {
    position: fixed;
    width: 20px;
    height: 20px;
    border: 2px solid #f472b6;
    border-radius: 50%;
    pointer-events: none;
    transform: translate(-50%, -50%);
    transition: width 0.2s, height 0.2s, background-color 0.2s;
    z-index: 9999;
}

.custom-cursor.pointer {
    width: 40px;
    height: 40px;
    background-color: rgba(244, 114, 182, 0.3);
}

/* Back to top button */
#back-to-top {
    position: fixed;
    bottom: 20px;
    right: 20px;
    background-color: #818cf8;
    color: white;
    border: none;
    border-radius: 50%;
    width: 50px;
    height: 50px;
    font-size: 24px;
    cursor: pointer;
    display: none;
    transition: opacity 0.3s, transform 0.3s;
    z-index: 1000;
}

#back-to-top:hover {
    background-color: #6366f1;
    transform: scale(1.1);
}

/* Achievement Chips */
.achievement-chip {
    animation: float 6s ease-in-out infinite;
    text-align: center;
    transition: transform 0.3s ease;
}

.achievement-chip:hover {
    transform: scale(1.1) !important;
}

@keyframes float {
    0%, 100% {
        transform: translateY(0px) rotate(var(--rotation, 0deg));
    }
    50% {
        transform: translateY(-20px) rotate(var(--rotation, 0deg));
    }
}

/* Set custom rotation for each chip */
.achievement-chip:nth-child(1) {
    --rotation: 12deg;
    animation-delay: 0s;
}

.achievement-chip:nth-child(2) {
    --rotation: -12deg;
    animation-delay: 1s;
}

.achievement-chip:nth-child(3) {
    --rotation: 6deg;
    animation-delay: 2s;
}

.achievement-chip:nth-child(4) {
    --rotation: -6deg;
    animation-delay: 3s;
}

/* Theme transition for all elements */
* {
    transition: background-color 0.3s ease, color 0.3s ease, border-color 0.3s ease;
}