:root {
    /* Light Mode Palette */
    --primary-color: #4361ee;       /* Royal Blue */
    --secondary-color: #ff6b35;     /* Vibrant Orange */
    --accent-color: #3f37c9;        /* Deep Blue */
    --bg-color: #f0f2f5;            /* Lighter Gray for better contrast */
    --card-bg: #ffffff;             /* White */
    --text-color: #2b2d42;          /* Dark Blue-Gray */
    --text-muted: #6c757d;          /* Gray */
    --border-color: #dee2e6;        /* Slightly darker border */
    --shadow-color: rgba(67, 97, 238, 0.15);
    
    /* Animation Variables */
    --anim-speed: 0.3s;
    --anim-bounce: cubic-bezier(0.68, -0.55, 0.265, 1.55);
}

[data-theme="dark"] {
    /* Dark Mode Palette */
    --primary-color: #4cc9f0;       /* Lighter Blue for Dark Mode */
    --secondary-color: #ff9e00;     /* Lighter Orange */
    --accent-color: #4895ef;
    --bg-color: #0f172a;            /* Deep Blue-Black */
    --card-bg: #1e293b;             /* Slate Gray */
    --text-color: #f1f5f9;          /* Light Gray */
    --text-muted: #94a3b8;
    --border-color: #334155;
    --shadow-color: rgba(0, 0, 0, 0.4);
}

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

/* --- Animations --- */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translate3d(0, 20px, 0);
    }
    to {
        opacity: 1;
        transform: translate3d(0, 0, 0);
    }
}

@keyframes slideInLeft {
    from {
        opacity: 0;
        transform: translate3d(-20px, 0, 0);
    }
    to {
        opacity: 1;
        transform: translate3d(0, 0, 0);
    }
}

@keyframes pulse {
    0% { transform: scale(1); }
    50% { transform: scale(1.05); }
    100% { transform: scale(1); }
}

@keyframes float {
    0% { transform: translateY(0px); }
    50% { transform: translateY(-10px); }
    100% { transform: translateY(0px); }
}

/* --- Components --- */

/* Cards */
.illustrator-card {
    background-color: var(--card-bg);
    border-radius: 20px;
    border: double 2px transparent;
    background-image: linear-gradient(var(--card-bg), var(--card-bg)), 
                      linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    background-origin: border-box;
    background-clip: padding-box, border-box;
    box-shadow: 0 10px 30px -10px var(--shadow-color);
    padding: 24px;
    margin-bottom: 25px;
    transition: all var(--anim-speed) var(--anim-bounce);
    animation: fadeInUp 0.5s ease-out forwards;
    position: relative;
    overflow: hidden;
}

.illustrator-card:hover {
    transform: translateY(-5px) scale(1.01);
    box-shadow: 0 20px 40px -10px var(--shadow-color);
}

/* Buttons */
.illustrator-btn {
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    color: white;
    border: none;
    border-radius: 12px;
    padding: 12px 28px;
    font-weight: 600;
    box-shadow: 0 4px 15px rgba(67, 97, 238, 0.3);
    transition: all 0.3s ease;
    cursor: pointer;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    font-size: 0.9rem;
    position: relative;
    overflow: hidden;
}

.illustrator-btn::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(rgba(255,255,255,0.2), rgba(255,255,255,0));
    opacity: 0;
    transition: opacity 0.3s ease;
}

.illustrator-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(67, 97, 238, 0.4);
    color: white;
}

.illustrator-btn:hover::after {
    opacity: 1;
}

.illustrator-btn:active {
    transform: translate(2px, 2px);
    box-shadow: 0px 0px 0px rgba(0,0,0,0.2);
}

.illustrator-btn.secondary {
    background-color: var(--secondary-color);
    border-color: var(--secondary-color);
}

.illustrator-btn.secondary:hover {
    background-color: #e05626; /* Darker Orange */
    border-color: #e05626;
}

/* Inputs */
.illustrator-input {
    background-color: var(--card-bg);
    border: 2px solid var(--border-color);
    border-radius: 10px;
    padding: 14px;
    color: var(--text-color);
    transition: all 0.3s ease;
    font-weight: 500;
}

.illustrator-input:focus {
    border-color: var(--primary-color);
    box-shadow: 4px 4px 0px var(--shadow-color);
    outline: none;
}

/* Sidebar / Top Header */
.top-header {
    background-color: var(--card-bg);
    border-bottom: 2px solid var(--border-color);
    padding: 15px 30px;
    box-shadow: 0 4px 20px rgba(0,0,0,0.05);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.nav-link {
    color: var(--text-color);
    border-radius: 8px;
    padding: 10px 18px;
    margin: 0 5px;
    transition: all 0.2s ease;
    font-weight: 600;
    position: relative;
}

.nav-link:hover, .nav-link.active {
    color: var(--primary-color);
    background-color: rgba(67, 97, 238, 0.08);
    transform: translateY(-2px);
}

.nav-link.active::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 20px;
    height: 3px;
    background-color: var(--primary-color);
    border-radius: 3px;
}

/* Tables */
.illustrator-table {
    width: 100%;
    border-collapse: separate;
    border-spacing: 0 8px;
}

.illustrator-table th {
    color: var(--text-muted);
    font-weight: 700;
    text-transform: uppercase;
    font-size: 0.8rem;
    padding: 15px;
    border: none;
    letter-spacing: 0.5px;
}

.illustrator-table td {
    background-color: var(--card-bg);
    padding: 18px 15px;
    border-top: 2px solid var(--border-color);
    border-bottom: 2px solid var(--border-color);
    vertical-align: middle;
}

.illustrator-table td:first-child {
    border-left: 2px solid var(--border-color);
    border-top-left-radius: 12px;
    border-bottom-left-radius: 12px;
}

.illustrator-table td:last-child {
    border-right: 2px solid var(--border-color);
    border-top-right-radius: 12px;
    border-bottom-right-radius: 12px;
}

.illustrator-table tr {
    transition: transform 0.2s ease;
}

.illustrator-table tr:hover {
    transform: scale(1.01);
}

.illustrator-table tr:hover td {
    border-color: var(--primary-color);
    box-shadow: 0 4px 10px rgba(0,0,0,0.05);
}

/* Login Page Specifics */
.login-container {
    background-color: var(--bg-color);
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
}

.login-bg-shape {
    position: absolute;
    border-radius: 50%;
    filter: blur(60px);
    z-index: 0;
    animation: float 8s ease-in-out infinite;
}

.shape-1 {
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, var(--primary-color) 0%, rgba(255,255,255,0) 70%);
    top: -150px;
    right: -150px;
    opacity: 0.15;
}

.shape-2 {
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, var(--secondary-color) 0%, rgba(255,255,255,0) 70%);
    bottom: -100px;
    left: -100px;
    opacity: 0.15;
    animation-delay: -4s;
}

/* Utilities */
.text-primary { color: var(--primary-color) !important; }
.text-secondary { color: var(--secondary-color) !important; }
.bg-primary { background-color: var(--primary-color) !important; }
.bg-secondary { background-color: var(--secondary-color) !important; }

/* Theme Toggle */
.theme-toggle {
    background: var(--card-bg);
    border: 2px solid var(--border-color);
    border-radius: 12px;
    width: 42px;
    height: 42px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-color);
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 2px 2px 0px var(--border-color);
}

.theme-toggle:hover {
    border-color: var(--primary-color);
    color: var(--primary-color);
    transform: rotate(15deg) scale(1.1);
    box-shadow: 4px 4px 0px var(--shadow-color);
}