/* --- Modern Theming using CSS Variables --- */

/* 1. Global Box-Sizing & Font Reset */
html {
  box-sizing: border-box;
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}
*, *:before, *:after {
  box-sizing: inherit;
  --transition-speed: 0.2s;
}

/* 2. CSS Variables for Theming (UPDATED) */
:root {
  /* Light Theme Palette - Professional & Clean */
  --bg-main: #f3f4f6;              
  --bg-surface: #ffffff;           
  --text-primary: #111827;         
  --text-secondary: #6b7280;       
  --border-color: #e5e7eb;         
  --accent-primary: #2563eb;       /* Primary is Blue */
  --accent-primary-hover: #1d4ed8;
  --accent-green: #19b461;         /* Secondary is Green */
  --accent-green-hover: #169c53;
  --accent-danger: #dc2626;        
  --accent-danger-hover: #b91c1c;
  --accent-neutral: #e5e7eb;
  --accent-neutral-hover: #d1d5db;
  --glow-primary: color-mix(in srgb, var(--accent-primary) 35%, transparent);
  --glow-green: color-mix(in srgb, var(--accent-green) 35%, transparent);
  --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
  /* Custom property for p5.js to read */
  --canvas-bg-p5: #ffffff;
  --canvas-border-p5: #d1d5db;
}

body.dark-mode {
  /* Dark Theme Palette - Based on Reference Image */
  --bg-main: #111317;              
  --bg-surface: #1C1F24;           
  --text-primary: #e6e6e6;         
  --text-secondary: #9a9a9a;       
  --border-color: #363A42;         
  --accent-primary: #0ea5e9;       /* Primary is Blue */
  --accent-primary-hover: #38bdf8;
  --accent-green: #00f5a0;         /* Secondary is Green */
  --accent-green-hover: #00d68e;
  --accent-danger: #e84855;        
  --accent-danger-hover: #e32d3a;
  --accent-neutral: #363A42;
  --accent-neutral-hover: #484d57;
  --glow-primary: color-mix(in srgb, var(--accent-primary) 25%, transparent);
  --glow-green: color-mix(in srgb, var(--accent-green) 25%, transparent);
  --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.3), 0 2px 4px -2px rgb(0 0 0 / 0.3);
  /* Custom property for p5.js to read */
  --canvas-bg-p5: #000000;
  --canvas-border-p5: #4b5563;
}

/* 3. Global Resets & Body Styling */
body {
    background-color: var(--bg-main);
    color: var(--text-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    margin: 0;
    padding: 1rem;
    transition: background-color var(--transition-speed) ease, color var(--transition-speed) ease;
}

#main-content {
    width: 100%;
    display: flex;
    flex-direction: column;
    gap: 1rem;
    max-width: 1800px; 
    max-height: calc(100vh - 2rem);
}

#canvas-container {
    border: 2px dashed var(--canvas-border-p5);
    border-radius: 0.75rem;
    overflow: hidden;
    width: 100%;
    aspect-ratio: 16 / 9;
    background-color: var(--canvas-bg-p5);
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 0;
    transition: all var(--transition-speed) ease;
}

canvas {
    display: block;
    width: 100%;
    height: 100%;
}

.control-panel {
    background-color: var(--bg-surface);
    padding: 1rem;
    border-radius: 0.75rem;
    border: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    gap: 1rem;
    box-shadow: var(--shadow-md);
    transition: all var(--transition-speed) ease;
}

.controls-group {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;
}

/* --- Styles for Top Controls --- */
#top-controls {
    display: grid;
    grid-template-columns: 1fr auto 1fr;
    align-items: center;
    gap: 1rem;
    width: 100%;
}

.left-controls {
    justify-self: start;
}

.centered-controls {
    justify-self: center;
}

.zoom-control {
    justify-self: end;
}

.left-controls, .centered-controls, .zoom-control {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.zoom-control label { font-weight: 500; }
.zoom-control .slider { width: 150px; }
.zoom-control span { width: 4rem; text-align: center; font-family: monospace; }


/* --- General Control Styles --- */
.btn {
    background-color: var(--accent-primary);
    color: white;
    border: 1px solid transparent;
    padding: 0.6rem 1.2rem;
    border-radius: 0.5rem;
    cursor: pointer;
    transition: all var(--transition-speed) ease-in-out;
    font-weight: 600;
    font-size: 0.875rem;
    white-space: nowrap;
}

body.dark-mode .btn {
    color: #000;
}

.btn:hover {
    background-color: var(--accent-primary-hover);
    transform: translateY(-1px);
    box-shadow: 0 0 15px 1px var(--glow-primary);
}
.btn:active { transform: translateY(0); }
.btn:disabled {
    background-color: var(--accent-neutral) !important;
    color: var(--text-secondary) !important;
    cursor: not-allowed;
    opacity: 0.6;
    transform: none !important;
    box-shadow: none !important;
    border-color: transparent !important;
}
.btn.icon-btn {
    padding: 0.6rem;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: var(--accent-neutral);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
}
.btn.icon-btn:hover {
    background-color: var(--accent-neutral-hover);
    box-shadow: none;
}
.btn.icon-btn svg {
    width: 1.25rem;
    height: 1.25rem;
}

/* UPDATED: Active state for icon buttons now uses green */
.btn.icon-btn.active {
    background-color: var(--accent-green);
    color: white;
    border-color: transparent;
}

body.dark-mode .btn.icon-btn.active {
    color: #000;
}

.btn.icon-btn.active:hover {
    background-color: var(--accent-green-hover);
    box-shadow: 0 0 15px 1px var(--glow-green);
}

/* NEW: Styles for the special green buttons */
#speed-btn, #theme-toggle-btn {
    background-color: var(--accent-green);
    color: white;
    border-color: transparent;
}

body.dark-mode #speed-btn,
body.dark-mode #theme-toggle-btn {
    background-color: var(--accent-green);
    color: #000;
}

#speed-btn:hover, #theme-toggle-btn:hover {
    background-color: var(--accent-green-hover);
    box-shadow: 0 0 15px 1px var(--glow-green);
}


.btn.btn-danger {
    background-color: var(--accent-danger);
    color: white;
    border-color: transparent;
}

body.dark-mode .btn.btn-danger {
    color: #000;
}

.btn.btn-danger:hover {
    background-color: var(--accent-danger-hover);
    color: white;
    border-color: transparent;
    box-shadow: 0 0 15px 1px color-mix(in srgb, var(--accent-danger) 30%, transparent);
}


.slider {
    -webkit-appearance: none;
    width: 100%;
    height: 8px;
    border-radius: 5px;
    background: var(--accent-neutral);
    outline: none;
    opacity: 0.8;
    transition: opacity .2s;
}
.slider:hover { opacity: 1; }
.slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: var(--accent-primary);
    cursor: pointer;
    border: 3px solid var(--bg-surface);
    transition: all var(--transition-speed) ease;
}
.slider:hover::-webkit-slider-thumb {
    box-shadow: 0 0 10px 0px var(--glow-primary);
}

.layout-controls { display: flex; align-items: center; gap: 0.5rem; }
.layout-controls label { font-weight: 500; color: var(--text-secondary); }
.layout-controls input {
    width: 50px;
    background-color: var(--bg-main);
    border: 1px solid var(--border-color);
    border-radius: 0.375rem;
    padding: 0.4rem;
    text-align: center;
    color: var(--text-primary);
    transition: all var(--transition-speed) ease;
}
.layout-controls input:focus {
    outline: none;
    border-color: var(--accent-primary);
    box-shadow: 0 0 8px 0px var(--glow-primary);
}

/* --- Sub-Seekbar Styles --- */
#sub-seekbar-controls {
    display: grid;
    grid-template-columns: 1fr auto 1fr;
    align-items: center;
    gap: 1rem;
}
.framerate-control-wrapper { justify-self: start; }
.time-display-container { justify-self: center; display: flex; flex-direction: column; align-items: center; gap: 0.25rem; }
.right-controls-wrapper { justify-self: end; display: flex; gap: 0.75rem; align-items: center;}

#timecode { font-family: 'Courier New', Courier, monospace; font-size: 1.125rem; color: var(--text-secondary); text-align: center; }
#frame-counter { font-family: 'Courier New', Courier, monospace; font-size: 0.9rem; color: var(--text-secondary); opacity: 0.7; text-align: center; }

/* --- Playback Speed Control Styles --- */
.speed-control-wrapper {
    position: relative; /* Container for the absolute positioned menu */
    display: flex;
    align-items: center;
}

.speed-menu {
    display: none; /* Hidden by default */
    position: absolute;
    bottom: calc(100% + 0.5rem); /* Position above the button with a small gap */
    left: 50%;
    transform: translateX(-50%);
    background-color: var(--bg-surface);
    border: 1px solid var(--border-color);
    border-radius: 0.5rem;
    padding: 0.75rem;
    box-shadow: var(--shadow-md);
    z-index: 10;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
    width: 180px; /* Give it a fixed width */
}

.speed-menu.visible {
    display: flex; /* Show the menu */
}

.speed-menu label {
    font-weight: 500;
    color: var(--text-secondary);
    font-size: 0.875rem;
}

.speed-menu .slider {
    width: 100%;
}

#speed-display {
    font-family: monospace;
    font-weight: 600;
    color: var(--text-primary);
    background-color: var(--bg-main);
    padding: 0.25rem 0.5rem;
    border-radius: 0.375rem;
    border: 1px solid var(--border-color);
    min-width: 4rem; /* Ensure consistent width */
    text-align: center;
}