/* General Body Styling */
body {
    font-family: 'Inter', sans-serif;
    margin: 0;
    padding: 0;
    background-color: var(--background-color);
    color: var(--text-color);
    transition: background-color 0.3s ease, color 0.3s ease;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

:root {
    --background-color: #f0f2f5;
    --card-background: #ffffff;
    --text-color: #333333;
    --primary-color: #007bff;
    --secondary-color: #6c757d;
    --border-color: #e0e0e0;
    --shadow-color: rgba(0, 0, 0, 0.08);
    --glass-background: rgba(255, 255, 255, 0.2);
    --glass-border: rgba(255, 255, 255, 0.3);
}

body[data-theme="dark"] {
    --background-color: #1a1a1a;
    --card-background: #2a2a2a;
    --text-color: #e0e0e0;
    --primary-color: #66b3ff;
    --secondary-color: #a0a0a0;
    --border-color: #3a3a3a;
    --shadow-color: rgba(0, 0, 0, 0.5);
    --glass-background: rgba(0, 0, 0, 0.2);
    --glass-border: rgba(255, 255, 255, 0.1);
}

/* Container */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 1rem;
    width: 100%;
    box-sizing: border-box;
}

/* Header */
.header {
    background-color: var(--card-background);
    padding: 1rem 0;
    border-bottom: 1px solid var(--border-color);
    box-shadow: 0 2px 4px var(--shadow-color);
}

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

.header .logo {
    font-weight: 700;
    font-size: 1.5rem;
    color: var(--primary-color);
    text-decoration: none;
}

.header .nav a {
    color: var(--text-color);
    text-decoration: none;
    margin-left: 1.5rem;
    font-weight: 500;
    transition: color 0.2s ease;
}

.header .nav a:hover,
.header .nav a.active {
    color: var(--primary-color);
}

/* Theme Toggle */
.theme-toggle {
    background: none;
    border: none;
    color: var(--text-color);
    cursor: pointer;
    font-size: 1.5rem;
    padding: 0.5rem;
    transition: color 0.2s ease;
}

.theme-toggle:hover {
    color: var(--primary-color);
}

.moon-icon, .sun-icon {
    display: none;
}

body[data-theme="dark"] .moon-icon {
    display: inline-block;
}

body[data-theme="light"] .sun-icon {
    display: inline-block;
}

/* Mobile Navigation */
.menu-toggle {
    display: none; /* Hidden on desktop */
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--text-color);
}

.mobile-nav-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.7);
    z-index: 99;
}

.mobile-nav {
    display: none; /* Hidden by default */
    flex-direction: column;
    position: fixed;
    top: 0;
    right: -250px; /* Hidden off-screen */
    width: 250px;
    height: 100%;
    background-color: var(--card-background);
    box-shadow: -2px 0 5px var(--shadow-color);
    z-index: 100;
    padding: 2rem 1rem;
    box-sizing: border-box;
    transition: right 0.3s ease-in-out;
}

.mobile-nav.is-open {
    right: 0; /* Slide in */
}

.mobile-nav a {
    color: var(--text-color);
    text-decoration: none;
    padding: 0.8rem 0;
    border-bottom: 1px solid var(--border-color);
    transition: color 0.2s ease;
}

.mobile-nav a:hover,
.mobile-nav a.active {
    color: var(--primary-color);
}

/* Main Content */
main {
    flex-grow: 1;
    padding: 2rem 0;
}

.card {
    background-color: var(--card-background);
    border-radius: 8px;
    box-shadow: 0 4px 12px var(--shadow-color);
    padding: 2rem;
    margin-bottom: 2rem;
}

.card.glassmorphism {
    background: var(--glass-background);
    border: 1px solid var(--glass-border);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
}

h1, h2, h3 {
    color: var(--text-color);
    margin-top: 0;
}

p {
    line-height: 1.6;
}

.modern-button {
    background-color: var(--primary-color);
    color: #ffffff;
    border: none;
    padding: 0.8rem 1.5rem;
    border-radius: 5px;
    cursor: pointer;
    font-size: 1rem;
    transition: background-color 0.2s ease, transform 0.1s ease;
}

.modern-button:hover {
    background-color: darken(var(--primary-color), 10%); /* This will require a preprocessor or JS for actual darken */
    transform: translateY(-1px);
}

.modern-button.secondary {
    background-color: var(--secondary-color);
}

.modern-button.secondary:hover {
    background-color: darken(var(--secondary-color), 10%);
}

.dropdown {
    padding: 0.8rem 1.5rem;
    border-radius: 5px;
    border: 1px solid var(--border-color);
    background-color: var(--card-background);
    color: var(--text-color);
    font-size: 1rem;
}

/* Gradient-specific styles */
.gradient-preview {
    width: 100%;
    height: 250px;
    background: linear-gradient(to right, #ff6b6b, #feca57, #48dbfb); /* Default linear */
    border-radius: 8px;
    margin-bottom: 1.5rem;
    border: 1px solid var(--border-color);
    box-shadow: inset 0 0 10px rgba(0, 0, 0, 0.1);
}

.color-inputs {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.color-input-group {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.color-input-group label {
    font-weight: 500;
}

.color-input-group input[type="color"] {
    -webkit-appearance: none;
    -moz-appearance: none;
    appearance: none;
    width: 30px;
    height: 30px;
    border: none;
    cursor: pointer;
    background: none;
    padding: 0;
}

.color-input-group input[type="color"]::-webkit-color-swatch-wrapper {
    padding: 0;
}

.color-input-group input[type="color"]::-webkit-color-swatch {
    border: 1px solid var(--border-color);
    border-radius: 4px;
}

.color-input-group input[type="color"]::-moz-color-swatch-wrapper {
    padding: 0;
}

.color-input-group input[type="color"]::-moz-color-swatch {
    border: 1px solid var(--border-color);
    border-radius: 4px;
}

.output {
    margin-top: 1.5rem;
    position: relative;
}

.output textarea {
    width: 100%;
    min-height: 100px;
    background-color: var(--card-background);
    color: var(--text-color);
    border: 1px solid var(--border-color);
    border-radius: 5px;
    padding: 1rem;
    font-family: 'Fira Code', 'Monaco', 'Consolas', 'monospace';
    font-size: 0.9rem;
    resize: vertical;
    box-sizing: border-box;
}

.output button {
    position: absolute;
    top: 10px;
    right: 10px;
    padding: 0.5rem 1rem;
    font-size: 0.8rem;
}

.download-section {
    margin-top: 2rem;
    border-top: 1px solid var(--border-color);
    padding-top: 1.5rem;
}

.download-controls {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
    align-items: center;
}

.download-controls button {
    margin-left: auto; /* Push button to the right */
}

/* Footer */
.footer {
    background-color: var(--card-background);
    padding: 1.5rem 0;
    border-top: 1px solid var(--border-color);
    text-align: center;
    margin-top: auto; /* Pushes footer to bottom */
}

.footer .footer-nav {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 1rem;
    margin-bottom: 1rem;
}

.footer .footer-nav a {
    color: var(--text-color);
    text-decoration: none;
    font-size: 0.9rem;
}

.footer a {
    color: var(--primary-color);
    text-decoration: none;
}

.footer p {
    font-size: 0.8rem;
    color: var(--secondary-color);
}

/* Custom Color Picker */
.custom-color-input-wrapper {
    position: relative;
    display: flex;
    align-items: center;
    background-color: var(--card-background);
    border: 1px solid var(--border-color);
    border-radius: 5px;
    padding: 0.5rem;
}

.color-swatch {
    width: 30px;
    height: 30px;
    border-radius: 3px;
    border: 1px solid var(--border-color);
    cursor: pointer;
    margin-right: 0.5rem;
    box-sizing: border-box;
}

.color-picker-popup {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    z-index: 10;
    background-color: var(--card-background);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    box-shadow: 0 4px 20px var(--shadow-color);
    padding: 1rem;
    min-width: 250px;
}

.color-picker-popup.active {
    display: block;
}

.color-picker-main {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.color-spectrum {
    width: 100%;
    height: 100px;
    background: linear-gradient(to right,
        rgb(255, 0, 0),    /* Red */
        rgb(255, 255, 0),  /* Yellow */
        rgb(0, 255, 0),    /* Green */
        rgb(0, 255, 255),  /* Cyan */
        rgb(0, 0, 255),    /* Blue */
        rgb(255, 0, 255),  /* Magenta */
        rgb(255, 0, 0)     /* Red */
    );
    border-radius: 5px;
    cursor: crosshair;
    position: relative;
    margin-bottom: 0.5rem;
}

.color-spectrum::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(to top, rgba(0,0,0,1), rgba(0,0,0,0)), linear-gradient(to left, rgba(255,255,255,1), rgba(255,255,255,0));
}

.color-sliders {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.slider-group {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.slider-group label {
    width: 40px;
    text-align: right;
    font-size: 0.8rem;
}

.slider {
    -webkit-appearance: none;
    width: 100%;
    height: 8px;
    border-radius: 5px;
    background: var(--border-color);
    outline: none;
    transition: opacity .2s;
    opacity: 0.7;
}

.slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 18px;
    height: 18px;
    border-radius: 50%;
    background: var(--primary-color);
    cursor: pointer;
    border: 2px solid var(--card-background);
    box-shadow: 0 0 5px rgba(0,0,0,0.3);
}

.slider::-moz-range-thumb {
    width: 18px;
    height: 18px;
    border-radius: 50%;
    background: var(--primary-color);
    cursor: pointer;
    border: 2px solid var(--card-background);
    box-shadow: 0 0 5px rgba(0,0,0,0.3);
}

.color-picker-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: 1rem;
}

.hex-input {
    width: 80px;
    padding: 0.5rem;
    border: 1px solid var(--border-color);
    border-radius: 5px;
    background-color: var(--background-color);
    color: var(--text-color);
    font-family: 'Inter', sans-serif;
}

.close-picker-btn {
    padding: 0.5rem 1rem;
    font-size: 0.9rem;
}

/* Linear Gradient Specific Controls */
.linear-gradient-controls {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.linear-gradient-controls .control-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.linear-gradient-controls input[type="range"] {
    width: 150px;
}

/* Radial Gradient Specific Controls */
.radial-gradient-controls {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.radial-gradient-controls .control-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.radial-gradient-controls select {
    width: 150px;
}

/* Responsive adjustments */
@media (max-width: 768px) {
    .header .nav {
        display: none;
    }

    .header .menu-toggle {
        display: block;
    }

    .header .container {
        padding: 0.5rem 1rem;
    }

    .header .logo {
        font-size: 1.2rem;
    }

    .card {
        padding: 1rem;
    }

    h1 {
        font-size: 1.8rem;
    }

    .color-inputs {
        flex-direction: column;
    }

    .download-controls {
        flex-direction: column;
        align-items: stretch;
    }

    .download-controls button {
        margin-left: 0;
    }
}