/* ==========================
   CSS Variables & Tokens 
   ========================== */
:root {
    --bg-color: #f0e6f2; /* Slightly darker pastel pinkish-purple */
    --sidebar-bg: rgba(245, 235, 248, 0.9);
    --panel-bg: rgba(255, 255, 255, 0.85);
    --panel-border: rgba(200, 180, 220, 0.5);
    --text-primary: #3d3042; /* Dark contrast for light background */
    --text-secondary: #7a6582;
    --accent-gradient: linear-gradient(135deg, #fca9e3, #c9a3f5, #9ee2f5);
    --accent-color: #b981f2;
    --accent-hover: #d3aefa;
    --accent-glow: rgba(185, 129, 242, 0.3);
    
    --success-color: #2ebaa6;

    --sidebar-width: 270px;
    
    /* Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    
    --font-heading: 'Gabriela', serif;
    --font-body: 'Open Sans', sans-serif;
    --font-label: 'PT Sans', sans-serif;
    
    --radius-sm: 8px;
    --radius-md: 16px;
    --radius-lg: 24px;
    
    --transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
}

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

body {
    background-color: var(--bg-color);
    background-image: 
        radial-gradient(circle at 15% 50%, rgba(252, 169, 227, 0.25), transparent 45%),
        radial-gradient(circle at 85% 30%, rgba(158, 226, 245, 0.25), transparent 45%);
    background-attachment: fixed;
    color: var(--text-primary);
    font-family: var(--font-body);
    font-size: 15px;
    line-height: 1.5;
    min-height: 100vh;
    overflow-x: hidden;
}

h1, h2, h3, h4 {
    font-family: var(--font-heading);
    font-weight: 600;
}

/* ==========================
   Layout 
   ========================== */
.app-container {
    display: flex;
    min-height: 100vh;
    max-width: 100%;
    margin: 0;
    overflow-x: hidden;
}

/* --- Sidebar --- */
.sidebar {
    width: var(--sidebar-width);
    background: var(--sidebar-bg);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-right: 1px solid var(--panel-border);
    padding: 2rem 1.5rem;
    display: flex;
    flex-direction: column;
    gap: 2.5rem;
    position: sticky;
    top: 0;
    height: 100vh;
    overflow-y: auto;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.logo-icon {
    font-size: 1.8rem;
}

.logo h1 {
    font-size: 1.4rem;
    font-weight: 800;
    color: var(--text-primary);
    margin: 0;
    letter-spacing: -0.5px;
}

.nav-menu {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.nav-btn {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.875rem 1rem;
    background: transparent;
    border: none;
    border-radius: var(--radius-sm);
    color: var(--text-secondary);
    font-family: var(--font-heading);
    font-size: 1.1rem;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
    text-align: left;
}

.nav-btn svg {
    width: 20px;
    height: 20px;
    opacity: 0.7;
}

.nav-btn:hover {
    color: var(--accent-color);
    background: rgba(185, 129, 242, 0.05);
}

.nav-btn.active {
    color: var(--accent-color);
    background: linear-gradient(90deg, rgba(185, 129, 242, 0.1), transparent);
    border-left: 3px solid var(--accent-color);
}
.nav-btn.active svg {
    opacity: 1;
    stroke: var(--accent-color);
}

/* --- Tools in Sidebar --- */
.rng-tool, .visualizer-toggle {
    background: rgba(255, 255, 255, 0.5);
    border: 1px solid var(--panel-border);
    border-radius: var(--radius-md);
    padding: 1.25rem;
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.rng-tool h3, .visualizer-toggle h3 {
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--text-secondary);
}

.rng-inputs {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.rng-inputs input {
    width: 100%;
    min-width: 65px;
    background: #fff;
    border: 1px solid var(--panel-border);
    color: var(--text-primary);
    padding: 0.5rem;
    border-radius: var(--radius-sm);
    text-align: center;
    outline: none;
    transition: var(--transition);
}

.rng-inputs input:focus {
    border-color: var(--accent-color);
    box-shadow: 0 0 0 2px var(--accent-glow);
}

.action-btn.small {
    background: #fff;
    border: 1px solid var(--panel-border);
    color: var(--text-primary);
    padding: 0.5rem;
    border-radius: var(--radius-sm);
    cursor: pointer;
    font-size: 0.9rem;
    transition: var(--transition);
}

.action-btn.small:hover {
    background: var(--bg-color);
    border-color: var(--accent-color);
}

.rng-result {
    text-align: center;
    font-size: 2rem;
    font-weight: 800;
    font-family: var(--font-heading);
    color: var(--accent-color);
    text-shadow: 0 0 10px var(--accent-glow);
    min-height: 48px;
}

.toggle-group {
    display: flex;
    background: rgba(200, 180, 220, 0.2);
    border-radius: var(--radius-sm);
    overflow: hidden;
}

.toggle-btn {
    flex: 1;
    padding: 0.6rem;
    background: none;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    font-size: 0.85rem;
    font-weight: 500;
    transition: var(--transition);
}

.toggle-btn.active {
    background: #fff;
    color: var(--accent-color);
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
}

/* --- Main Content Layout --- */
.main-content {
    flex: 1;
    overflow-y: auto;
    padding: var(--spacing-md);
}

.view-section {
    display: none;
    max-width: 1000px;
    margin: 0 auto;
    animation: fadeIn 0.4s ease forwards;
}

.view-section.active {
    display: block;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

.section-header {
    margin-bottom: 2.5rem;
}

.section-header h2 {
    font-size: 2.5rem;
    margin-bottom: 0.5rem;
}

.section-header p {
    color: var(--text-secondary);
    font-size: 1.1rem;
}

/* --- Glass Panels --- */
.glass-panel {
    background: var(--panel-bg);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid var(--panel-border);
    border-radius: var(--radius-lg);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
}

/* --- Randomiser View --- */
.randomiser-layout {
    display: grid;
    grid-template-columns: 1fr 340px;
    gap: var(--spacing-md);
    align-items: start;
}

/* Steps list */
.steps-container {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.step-card {
    background: rgba(255, 255, 255, 0.6);
    border: 1px solid var(--panel-border);
    border-radius: var(--radius-md);
    padding: 1.25rem;
    cursor: pointer;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
    box-shadow: 0 4px 15px rgba(0,0,0,0.02);
}

.step-card:hover {
    border-color: var(--accent-hover);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(0,0,0,0.05);
}

.step-card.selected {
    border-color: var(--accent-color);
    background: linear-gradient(to right, rgba(185, 129, 242, 0.05), transparent);
}

.step-card.selected::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    height: 100%;
    width: 4px;
    background: var(--accent-gradient);
}

.step-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 0.5rem;
}

.step-title {
    font-family: var(--font-heading);
    font-weight: 600;
    font-size: 1.1rem;
    color: var(--text-primary);
}

.step-status {
    font-size: 0.8rem;
    color: var(--text-secondary);
    background: rgba(200, 180, 220, 0.2);
    padding: 0.2rem 0.6rem;
    border-radius: 12px;
}

.step-result {
    font-size: 1.25rem;
    color: var(--text-primary);
    font-weight: 500;
    min-height: 1.5em;
    display: flex;
    align-items: center;
}

.step-result.empty {
    color: var(--text-secondary);
    font-style: italic;
    font-size: 1rem;
    opacity: 0.6;
}

/* Visualization Panel */
.visualization-container {
    padding: 2rem;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 2rem;
    position: sticky;
    top: 3rem;
}

.visualizer-canvas {
    width: 320px;
    height: 320px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 255, 255, 0.5);
    position: relative;
    box-shadow: 0 0 40px rgba(0,0,0,0.03) inset, 0 10px 30px rgba(185, 129, 242, 0.1);
    border: 2px solid rgba(255, 255, 255, 0.8);
}

.placeholder-visualizer {
    text-align: center;
    color: var(--text-secondary);
    opacity: 0.6;
}

.placeholder-visualizer .emoji {
    font-size: 4rem;
    margin-bottom: 1rem;
    display: block;
    animation: float 3s ease-in-out infinite;
}

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

.visualizer-controls {
    display: flex;
    gap: 1rem;
    width: 100%;
}

/* --- Buttons --- */
.primary-btn, .secondary-btn {
    padding: 1rem 1.5rem;
    border-radius: var(--radius-sm);
    font-family: var(--font-heading);
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    border: none;
    flex: 1;
}

.primary-btn {
    background: var(--accent-gradient);
    color: #fff;
    box-shadow: 0 4px 15px var(--accent-glow);
    text-shadow: 0 1px 2px rgba(0,0,0,0.2);
}

.primary-btn:hover:not(:disabled) {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(185, 129, 242, 0.5);
}

.primary-btn:disabled {
    background: #e2d5ec;
    color: #9ba1b9;
    box-shadow: none;
    cursor: not-allowed;
}

.secondary-btn {
    background: #fff;
    border: 1px solid var(--accent-color);
    color: var(--accent-color);
}

.secondary-btn:hover {
    background: rgba(185, 129, 242, 0.05);
}

/* --- Form Elements --- */
.log-form {
    padding: 2.5rem;
}

.form-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.form-group-full {
    grid-column: 1 / -1;
}

.form-group label {
    font-family: var(--font-heading);
    color: var(--text-secondary);
    font-size: 0.95rem;
}

.form-group input[type="text"],
.form-group textarea {
    background: #fff;
    border: 1px solid var(--panel-border);
    border-radius: var(--radius-sm);
    padding: 1rem;
    color: var(--text-primary);
    font-family: var(--font-body);
    font-size: 1rem;
    transition: var(--transition);
    width: 100%;
}

.form-group input[type="text"]:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--accent-color);
    background: #fff;
    box-shadow: 0 0 0 2px var(--accent-glow);
}

.file-upload-wrapper {
    position: relative;
    height: 120px;
    border: 2px dashed rgba(185, 129, 242, 0.4);
    border-radius: var(--radius-sm);
    background: rgba(255, 255, 255, 0.5);
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
}

.file-upload-wrapper:hover {
    border-color: var(--accent-color);
    background: rgba(255, 142, 83, 0.05);
}

.file-upload-wrapper input[type="file"] {
    position: absolute;
    width: 100%;
    height: 100%;
    opacity: 0;
    cursor: pointer;
}

.file-upload-ui {
    color: var(--text-secondary);
    text-align: center;
    pointer-events: none;
}

.form-actions {
    margin-top: 2rem;
    display: flex;
    justify-content: flex-end;
}

.form-actions .primary-btn {
    flex: 0 1 auto;
    min-width: 200px;
}

/* --- Visualizer Animations --- */

/* Lottery Cage */
.bingo-cage-wrapper {
    position: relative;
    width: 150px;
    height: 180px;
    margin: 0 auto;
}

.bingo-cage-ball {
    width: 130px;
    height: 130px;
    border-radius: 50%;
    border: 3px solid rgba(185, 129, 242, 0.8);
    position: absolute;
    top: 0;
    left: 10px;
    background: 
        radial-gradient(circle, rgba(255,255,255,0.5), rgba(0,0,0,0.05)),
        linear-gradient(rgba(185, 129, 242, 0.2) 2px, transparent 2px),
        linear-gradient(90deg, rgba(185, 129, 242, 0.2) 2px, transparent 2px);
    background-size: 100% 100%, 15px 15px, 15px 15px;
    z-index: 2;
    overflow: hidden;
}

.lottery-ball-sm {
    width: 20px;
    height: 20px;
    border-radius: 50%;
    position: absolute;
    box-shadow: inset -2px -2px 4px rgba(0,0,0,0.2);
}
.b1 { background: #ff9cee; top: 80px; left: 30px; animation: bounce1 0.4s infinite alternate; }
.b2 { background: #d5a6ff; top: 90px; left: 50px; animation: bounce2 0.5s infinite alternate; }
.b3 { background: #9ce6ff; top: 75px; left: 70px; animation: bounce3 0.3s infinite alternate; }
.b4 { background: #fca9e3; top: 80px; left: 90px; animation: bounce1 0.45s infinite alternate; }
.b5 { background: #ffd085; top: 60px; left: 50px; animation: bounce2 0.35s infinite alternate; }

.cage-stand {
    position: absolute;
    bottom: 20px;
    left: 0;
    width: 150px;
    height: 80px;
    border: 4px solid #bda8d1;
    border-top: none;
    border-radius: 0 0 15px 15px;
    z-index: 1;
}

@keyframes spin-cage-anim {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(720deg); }
}

@keyframes bounce1 { 0% { transform: translateY(0) translateX(0); } 100% { transform: translateY(-40px) translateX(20px); } }
@keyframes bounce2 { 0% { transform: translateY(0) translateX(0); } 100% { transform: translateY(-30px) translateX(-20px); } }
@keyframes bounce3 { 0% { transform: translateY(0) translateX(0); } 100% { transform: translateY(-50px) translateX(10px); } }

.anim-cage .bingo-cage-ball {
    animation: spin-cage-anim 0.8s linear infinite;
}

/* Responsive */
@media (max-width: 1024px) {
    .randomiser-layout {
        grid-template-columns: 1fr;
    }
    .visualization-container {
        position: static;
        order: -1;
    }
}