/* ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
   LUXURY DARK CHROME THEME - Premium Hardware Plugin Look
   Designed to match $10,000+ mastering hardware
   ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ */

/* ═══════════════════════════════════════════════════════════════════════════
   1. THE CHASSIS - Brushed Aluminum with Milled Edges
   ═══════════════════════════════════════════════════════════════════════════ */

body {
    background: #0d0d0f;
    /* Brushed aluminum noise texture */
    background-image:
        repeating-linear-gradient(
            0deg,
            transparent,
            transparent 2px,
            rgba(255, 255, 255, 0.02) 2px,
            rgba(255, 255, 255, 0.02) 4px
        ),
        url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" width="200" height="200"><filter id="noise"><feTurbulence type="fractalNoise" baseFrequency="0.9" numOctaves="4" stitchTiles="stitch"/></filter><rect width="200" height="200" filter="url(%23noise)" opacity="0.05"/></svg>');
}

.main-container {
    border: 1px solid #2a2a2f; /* Milled metal edge */
    box-shadow:
        inset 0 1px 1px rgba(255, 255, 255, 0.05), /* Top highlight */
        0 8px 32px rgba(0, 0, 0, 0.6); /* Depth shadow */
}

/* All major panels get the chassis treatment */
.left-sidebar,
.center-main,
.right-sidebar {
    background: #0d0d0f;
    border: 1px solid #2a2a2f;
    box-shadow: inset 0 1px 1px rgba(255, 255, 255, 0.05);
    position: relative;
}

/* ═══════════════════════════════════════════════════════════════════════════
   2. THE DISPLAY SCREENS - OLED Glass with Technical Grid
   ═══════════════════════════════════════════════════════════════════════════ */

.eq-graph-container,
.waveform-container,
.meters-panel {
    background: #0a0a0c;
    border: 1px solid #1a1a1f;
    border-radius: 8px;
    padding: 15px;
    position: relative;

    /* Glass effect overlay */
    background-image: linear-gradient(135deg, rgba(255, 255, 255, 0.03) 0%, transparent 50%);

    /* OLED screen depth */
    box-shadow:
        inset 0 0 20px rgba(0, 0, 0, 0.8),
        inset 0 1px 1px rgba(255, 255, 255, 0.05),
        0 4px 16px rgba(0, 0, 0, 0.5);
}

/* Glass reflection on screens */
.eq-graph-container::before,
.waveform-container::before,
.meters-panel::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 40%;
    background: linear-gradient(180deg, rgba(255, 255, 255, 0.04) 0%, transparent 100%);
    border-radius: 8px 8px 0 0;
    pointer-events: none;
    z-index: 10;
}

/* OLED Glow on all active meters and curves */
.meter-value,
.eq-graph-canvas,
.waveform-canvas {
    filter: drop-shadow(0 0 8px rgba(0, 229, 255, 0.6));
}

/* Technical oscilloscope grid pattern */
.eq-graph-container {
    background-image:
        linear-gradient(135deg, rgba(255, 255, 255, 0.03) 0%, transparent 50%),
        repeating-linear-gradient(0deg, transparent, transparent 19px, #151515 19px, #151515 20px),
        repeating-linear-gradient(90deg, transparent, transparent 19px, #151515 19px, #151515 20px);
}

/* ═══════════════════════════════════════════════════════════════════════════
   3. CONTROLS & SLIDERS - Machined Chrome with LED Reflection
   ═══════════════════════════════════════════════════════════════════════════ */

/* Chrome knobs/faders */
input[type="range"] {
    -webkit-appearance: none;
    background: transparent;
    height: 6px;
}

input[type="range"]::-webkit-slider-track {
    background: linear-gradient(180deg, #1a1a1f 0%, #0d0d0f 100%);
    height: 6px;
    border-radius: 3px;
    border: 1px solid #2a2a2f;
    box-shadow:
        inset 0 2px 4px rgba(0, 0, 0, 0.6),
        0 1px 0 rgba(255, 255, 255, 0.05);
}

input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 20px;
    height: 20px;
    border-radius: 50%;

    /* Machined chrome gradient */
    background: radial-gradient(circle at 35% 35%, #4a4a4f 0%, #111113 100%);

    border: 1px solid #555;
    box-shadow:
        0 2px 6px rgba(0, 0, 0, 0.8),
        inset 0 1px 2px rgba(255, 255, 255, 0.3),
        inset 0 -1px 2px rgba(0, 0, 0, 0.5);

    cursor: pointer;
    transition: all 0.15s ease;
}

/* Active state - LED glow reflection */
input[type="range"]:active::-webkit-slider-thumb,
input[type="range"]:hover::-webkit-slider-thumb {
    background: radial-gradient(circle at 35% 35%, #5a5a6f 0%, #1a1a2f 100%);
    box-shadow:
        0 2px 8px rgba(0, 229, 255, 0.6),
        0 0 12px rgba(0, 229, 255, 0.4),
        inset 0 1px 2px rgba(255, 255, 255, 0.4),
        inset 0 -1px 2px rgba(0, 0, 0, 0.5);
}

/* Fader track glow when active */
input[type="range"]:active::-webkit-slider-track {
    box-shadow:
        inset 0 2px 4px rgba(0, 0, 0, 0.6),
        0 0 8px rgba(0, 229, 255, 0.4),
        0 1px 0 rgba(255, 255, 255, 0.05);
}

/* ═══════════════════════════════════════════════════════════════════════════
   4. HIGH-END TYPOGRAPHY - Technical Precision
   ═══════════════════════════════════════════════════════════════════════════ */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&family=Roboto+Mono:wght@400;500;600&display=swap');

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    font-weight: 400;
    letter-spacing: -0.01em;
}

.section-title,
.meter-label {
    font-family: 'Roboto Mono', 'Courier New', monospace;
    font-size: 0.7rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: #ffffff !important;
    opacity: 1.0 !important;
    transition: color 0.3s ease;
    text-shadow: 0 0 8px rgba(255, 255, 255, 0.3);
}

/* Labels light up when module is active */
.section-title.active,
.meter-label.active {
    color: #ffffff !important;
    text-shadow: 0 0 12px rgba(0, 229, 255, 0.8);
}

.meter-value {
    font-family: 'Roboto Mono', monospace;
    font-weight: 700;
    font-variant-numeric: tabular-nums;
    color: #00d4ff !important;
    text-shadow: 0 0 12px rgba(0, 212, 255, 0.8);
    font-size: 1.1rem;
}

/* ═══════════════════════════════════════════════════════════════════════════
   5. BUTTON INTERACTION - Mechanical Skeuomorphism
   ═══════════════════════════════════════════════════════════════════════════ */

/* Base button mechanics (all buttons get 3D depth) */
.action-btn,
.action-btn-primary,
.action-btn-secondary,
.selector-btn {
    position: relative;
    font-family: 'Inter', sans-serif;
    font-weight: 600;
    letter-spacing: 0.05em;
    transition: all 0.1s ease;
    transform: translateY(0);

    /* All buttons get inset highlight */
    box-shadow:
        0 4px 0 rgba(0, 0, 0, 0.4),
        0 6px 12px rgba(0, 0, 0, 0.6),
        inset 0 1px 1px rgba(255, 255, 255, 0.1);
}

/* ALL ACTION BUTTONS - Unified Cyan/Blue Hardware Style */
.action-btn-primary,
.action-btn-secondary {
    /* Backlit lucite cyan - matches hardware theme */
    background: linear-gradient(180deg, #1a4a5a 0%, #0d2a3a 100%);
    border: 1px solid #2a5a6a;

    /* Cyan LED depth bar */
    box-shadow:
        0 4px 0 #006f7b,
        0 6px 12px rgba(0, 0, 0, 0.6),
        inset 0 1px 1px rgba(255, 255, 255, 0.1);
}

.action-btn-primary:hover:not(:disabled),
.action-btn-secondary:hover:not(:disabled) {
    background: linear-gradient(180deg, #2a5a6a 0%, #1a4a5a 100%);
    box-shadow:
        0 4px 0 #007f8b,
        0 6px 16px rgba(0, 229, 255, 0.4),
        inset 0 1px 1px rgba(255, 255, 255, 0.15);
}

.action-btn-primary:active:not(:disabled),
.action-btn-secondary:active:not(:disabled) {
    transform: translateY(4px);
    box-shadow:
        0 0px 0 #006f7b,
        0 2px 8px rgba(0, 0, 0, 0.8),
        inset 0 2px 4px rgba(0, 0, 0, 0.4);
}

/* SELECTOR BUTTONS - Genre/Platform (Subtle glass style) */
.selector-btn {
    /* Dark glass with metal edge */
    background: linear-gradient(135deg, rgba(42, 42, 47, 0.4) 0%, rgba(13, 13, 15, 0.6) 100%);
    border: 1px solid #2a2a2f;

    /* Subtle depth (no press effect, just selection) */
    box-shadow:
        inset 0 1px 0 rgba(255, 255, 255, 0.05),
        0 2px 4px rgba(0, 0, 0, 0.4);

    transition: all 0.2s ease;
}

.selector-btn:hover {
    border-color: #00d4ff;
    background: linear-gradient(135deg, rgba(0, 212, 255, 0.15) 0%, rgba(0, 150, 200, 0.1) 100%);
    box-shadow:
        inset 0 1px 0 rgba(255, 255, 255, 0.08),
        0 0 12px rgba(0, 212, 255, 0.3);
}

.selector-btn.active {
    border-color: #00d4ff;
    background: linear-gradient(135deg, rgba(0, 212, 255, 0.25) 0%, rgba(0, 150, 200, 0.15) 100%);
    box-shadow:
        inset 0 1px 0 rgba(255, 255, 255, 0.1),
        0 0 15px rgba(0, 212, 255, 0.5);
}

/* GENERIC ACTION BUTTON (fallback) */
.action-btn {
    /* Backlit lucite style */
    background: linear-gradient(180deg, #1a3a4a 0%, #0d1f2a 100%);
    border: 1px solid #2a4a5a;

    /* Mechanical depth */
    box-shadow:
        0 4px 0 #005f6b,
        0 6px 12px rgba(0, 0, 0, 0.6),
        inset 0 1px 1px rgba(255, 255, 255, 0.1);
}

.action-btn:hover {
    background: linear-gradient(180deg, #2a4a5a 0%, #1a3a4a 100%);
    box-shadow:
        0 4px 0 #006f7b,
        0 6px 16px rgba(0, 229, 255, 0.3),
        inset 0 1px 1px rgba(255, 255, 255, 0.15);
}

/* Mechanical press effect */
.action-btn:active {
    transform: translateY(4px);
    box-shadow:
        0 0px 0 #005f6b,
        0 2px 8px rgba(0, 0, 0, 0.8),
        inset 0 2px 4px rgba(0, 0, 0, 0.4);
}

/* A/B COMPARE BUTTON - Same cyan hardware style */
#abCompareBtn {
    /* Backlit lucite cyan - unified with other buttons */
    background: linear-gradient(180deg, #1a4a5a 0%, #0d2a3a 100%) !important;
    border: 1px solid #2a5a6a !important;

    /* Cyan LED depth bar */
    box-shadow:
        0 4px 0 #006f7b,
        0 6px 12px rgba(0, 0, 0, 0.6),
        inset 0 1px 1px rgba(255, 255, 255, 0.1) !important;
}

#abCompareBtn:hover:not(:disabled) {
    background: linear-gradient(180deg, #2a5a6a 0%, #1a4a5a 100%) !important;
    box-shadow:
        0 4px 0 #007f8b,
        0 6px 16px rgba(0, 229, 255, 0.4),
        inset 0 1px 1px rgba(255, 255, 255, 0.15) !important;
}

#abCompareBtn:active:not(:disabled) {
    transform: translateY(4px);
    box-shadow:
        0 0px 0 #006f7b,
        0 2px 8px rgba(0, 0, 0, 0.8),
        inset 0 2px 4px rgba(0, 0, 0, 0.4) !important;
}

/* Master buttons - Extra premium (AI AUTO MASTER, EXPORT) */
#autoMasterBtn,
#exportBtn {
    background: linear-gradient(180deg, #2a4a6a 0%, #1a2a3a 100%);
    border: 2px solid #3a5a7a;
    font-size: 0.95rem;
    padding: 14px 28px;

    box-shadow:
        0 6px 0 #004a5a,
        0 8px 20px rgba(0, 0, 0, 0.7),
        inset 0 1px 2px rgba(255, 255, 255, 0.15),
        0 0 0 1px rgba(0, 229, 255, 0.2);
}

#autoMasterBtn:hover,
#exportBtn:hover {
    box-shadow:
        0 6px 0 #005a6a,
        0 8px 24px rgba(0, 229, 255, 0.5),
        inset 0 1px 2px rgba(255, 255, 255, 0.2),
        0 0 0 2px rgba(0, 229, 255, 0.4);
}

#autoMasterBtn:active,
#exportBtn:active {
    transform: translateY(6px);
    box-shadow:
        0 0px 0 #004a5a,
        0 2px 12px rgba(0, 0, 0, 0.9),
        inset 0 3px 6px rgba(0, 0, 0, 0.5);
}

/* All Utility Buttons - Same cyan hardware style (override inline styles) */
#loadReferenceBtn,
#applyReferenceBtn,
#resetBtn,
#loudnessMatchBtn,
#savePresetBtn,
#loadPresetBtn {
    /* Backlit lucite cyan - unified with other buttons */
    background: linear-gradient(180deg, #1a4a5a 0%, #0d2a3a 100%) !important;
    border: 1px solid #2a5a6a !important;

    box-shadow:
        0 4px 0 #006f7b,
        0 6px 12px rgba(0, 0, 0, 0.6),
        inset 0 1px 1px rgba(255, 255, 255, 0.1) !important;
}

#loadReferenceBtn:hover:not(:disabled),
#applyReferenceBtn:hover:not(:disabled),
#resetBtn:hover:not(:disabled),
#loudnessMatchBtn:hover:not(:disabled),
#savePresetBtn:hover:not(:disabled),
#loadPresetBtn:hover:not(:disabled) {
    background: linear-gradient(180deg, #2a5a6a 0%, #1a4a5a 100%) !important;
    box-shadow:
        0 4px 0 #007f8b,
        0 6px 16px rgba(0, 229, 255, 0.4),
        inset 0 1px 1px rgba(255, 255, 255, 0.15) !important;
}

#loadReferenceBtn:active:not(:disabled),
#applyReferenceBtn:active:not(:disabled),
#resetBtn:active:not(:disabled),
#loudnessMatchBtn:active:not(:disabled),
#savePresetBtn:active:not(:disabled),
#loadPresetBtn:active:not(:disabled) {
    transform: translateY(4px);
    box-shadow:
        0 0px 0 #006f7b,
        0 2px 8px rgba(0, 0, 0, 0.8),
        inset 0 2px 4px rgba(0, 0, 0, 0.4) !important;
}

/* ═══════════════════════════════════════════════════════════════════════════
   6. KNURLED METAL STUDS - EQ Handles
   ═══════════════════════════════════════════════════════════════════════════ */

.eq-handle,
.eq-control-point {
    background: radial-gradient(circle at 35% 35%, #5a5a6f 0%, #1a1a2f 100%);
    border: 2px solid #3a3a4f;
    box-shadow:
        0 2px 8px rgba(0, 0, 0, 0.8),
        0 0 12px rgba(0, 229, 255, 0.5),
        inset 0 1px 2px rgba(255, 255, 255, 0.3),
        inset 0 -1px 2px rgba(0, 0, 0, 0.6);
}

/* LED indicator ring */
.eq-handle::after,
.eq-control-point::after {
    content: '';
    position: absolute;
    top: -4px;
    left: -4px;
    right: -4px;
    bottom: -4px;
    border: 1px solid rgba(0, 229, 255, 0.4);
    border-radius: 50%;
    box-shadow:
        0 0 8px rgba(0, 229, 255, 0.6),
        inset 0 0 4px rgba(0, 229, 255, 0.3);
}

/* ═══════════════════════════════════════════════════════════════════════════
   7. SPECULAR HIGHLIGHTS - Titanium Edges
   ═══════════════════════════════════════════════════════════════════════════ */

.control-group,
.selector-group,
.meter-section {
    border: 1px solid #2a2a2f;
    border-radius: 6px;
    background: linear-gradient(135deg, rgba(42, 42, 47, 0.3) 0%, rgba(13, 13, 15, 0.5) 100%);

    /* Specular edge highlight */
    box-shadow:
        inset 0 1px 0 rgba(255, 255, 255, 0.08),
        inset 1px 0 0 rgba(255, 255, 255, 0.05),
        0 2px 8px rgba(0, 0, 0, 0.4);
}

/* ═══════════════════════════════════════════════════════════════════════════
   8. POWER INDICATORS - LED Pilot Lights
   ═══════════════════════════════════════════════════════════════════════════ */

.power-indicator {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: radial-gradient(circle at 30% 30%, #00ff88 0%, #00aa55 100%);
    box-shadow:
        0 0 8px rgba(0, 255, 136, 0.8),
        0 0 16px rgba(0, 255, 136, 0.4),
        inset 0 1px 1px rgba(255, 255, 255, 0.6);
    animation: powerPulse 2s ease-in-out infinite;
}

@keyframes powerPulse {
    0%, 100% {
        box-shadow:
            0 0 8px rgba(0, 255, 136, 0.8),
            0 0 16px rgba(0, 255, 136, 0.4),
            inset 0 1px 1px rgba(255, 255, 255, 0.6);
    }
    50% {
        box-shadow:
            0 0 12px rgba(0, 255, 136, 1),
            0 0 24px rgba(0, 255, 136, 0.6),
            inset 0 1px 1px rgba(255, 255, 255, 0.8);
    }
}

/* ═══════════════════════════════════════════════════════════════════════════
   11. TARGET HIT ANIMATIONS - OLED Screen Feedback
   ═══════════════════════════════════════════════════════════════════════════ */

/* LUFS meter value pulse when target is hit */
@keyframes targetPulse {
    0%, 100% {
        text-shadow: 0 0 8px rgba(0, 229, 255, 0.6);
        transform: scale(1);
    }
    50% {
        text-shadow:
            0 0 16px rgba(0, 229, 255, 1),
            0 0 32px rgba(0, 229, 255, 0.6),
            0 0 48px rgba(0, 229, 255, 0.3);
        transform: scale(1.05);
    }
}

/* OLED screen brightens when LUFS hits target (simulates backlight illuminating chassis) */
@keyframes screenBrighten {
    0%, 100% {
        box-shadow:
            inset 0 0 20px rgba(0, 0, 0, 0.8),
            inset 0 1px 1px rgba(255, 255, 255, 0.05),
            0 4px 16px rgba(0, 0, 0, 0.5);
    }
    50% {
        box-shadow:
            inset 0 0 20px rgba(0, 0, 0, 0.6),
            inset 0 1px 1px rgba(255, 255, 255, 0.1),
            0 4px 24px rgba(0, 229, 255, 0.4),
            0 0 40px rgba(0, 229, 255, 0.2);
    }
}

/* ═══════════════════════════════════════════════════════════════════════════
   9. VU METER NEEDLES - Analog Movement
   ═══════════════════════════════════════════════════════════════════════════ */

.meter-bar,
.vu-needle {
    /* Smooth analog movement with slight overshoot */
    transition: all 0.15s cubic-bezier(0.34, 1.56, 0.64, 1);
}

/* ═══════════════════════════════════════════════════════════════════════════
   10. LUXURY SCROLLBARS - Chrome Track
   ═══════════════════════════════════════════════════════════════════════════ */

::-webkit-scrollbar {
    width: 10px;
    height: 10px;
}

::-webkit-scrollbar-track {
    background: linear-gradient(180deg, #1a1a1f 0%, #0d0d0f 100%);
    border: 1px solid #2a2a2f;
    box-shadow: inset 0 2px 4px rgba(0, 0, 0, 0.6);
}

::-webkit-scrollbar-thumb {
    background: radial-gradient(circle at 35% 35%, #4a4a4f 0%, #1a1a2f 100%);
    border: 1px solid #3a3a4f;
    border-radius: 5px;
    box-shadow:
        inset 0 1px 2px rgba(255, 255, 255, 0.2),
        inset 0 -1px 2px rgba(0, 0, 0, 0.4);
}

::-webkit-scrollbar-thumb:hover {
    background: radial-gradient(circle at 35% 35%, #5a5a6f 0%, #2a2a4f 100%);
    box-shadow:
        0 0 8px rgba(0, 229, 255, 0.5),
        inset 0 1px 2px rgba(255, 255, 255, 0.3),
        inset 0 -1px 2px rgba(0, 0, 0, 0.4);
}

/* ═══════════════════════════════════════════════════════════════════════════
   11. TIER SYSTEM - 3-Tier Commercial Hardware States
   ═══════════════════════════════════════════════════════════════════════════ */

/* ┌─────────────────────────────────────────────────────────────────────────┐
   │ 11.1 ROTARY TIER SELECTOR - Physical Rotary Switch                     │
   └─────────────────────────────────────────────────────────────────────────┘ */

.tier-selector-container {
    position: fixed;
    top: 20px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 9999;
    background: linear-gradient(180deg, #1a1a1f 0%, #0d0d0f 100%);
    border: 2px solid #2a2a2f;
    border-radius: 16px;
    padding: 20px 30px;
    box-shadow:
        inset 0 1px 2px rgba(255, 255, 255, 0.1),
        0 8px 32px rgba(0, 0, 0, 0.8);
    display: flex;
    align-items: center;
    gap: 25px;
}

.tier-selector-label {
    font-family: 'Roboto Mono', monospace;
    font-size: 0.7rem;
    text-transform: uppercase;
    letter-spacing: 1.5px;
    color: rgba(255, 255, 255, 0.5);
    font-weight: 600;
}

.tier-selector-switch {
    display: flex;
    gap: 4px;
    background: #0a0a0c;
    border: 1px solid #1a1a1f;
    border-radius: 10px;
    padding: 4px;
    box-shadow: inset 0 2px 6px rgba(0, 0, 0, 0.6);
}

.tier-option {
    padding: 12px 24px;
    background: transparent;
    border: none;
    border-radius: 8px;
    font-family: 'Inter', sans-serif;
    font-size: 0.85rem;
    font-weight: 700;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
    color: rgba(255, 255, 255, 0.4);
    position: relative;
}

.tier-option:hover {
    color: rgba(255, 255, 255, 0.7);
}

/* Basic Tier - Dimmed Grey */
.tier-option[data-tier="basic"].active {
    background: radial-gradient(circle at 35% 35%, #3a3a3f 0%, #1a1a1f 100%);
    color: #888888;
    box-shadow:
        0 0 12px rgba(136, 136, 136, 0.3),
        inset 0 1px 2px rgba(255, 255, 255, 0.1);
}

/* Advanced Tier - Cyan Glow */
.tier-option[data-tier="advanced"].active {
    background: radial-gradient(circle at 35% 35%, #1a4a5a 0%, #0d2a3a 100%);
    color: #00d4ff;
    box-shadow:
        0 0 16px rgba(0, 212, 255, 0.5),
        inset 0 1px 2px rgba(255, 255, 255, 0.1);
}

/* Premium Tier - Legendary Gold */
.tier-option[data-tier="premium"].active {
    background: radial-gradient(circle at 35% 35%, #4a3a1a 0%, #2a1a0a 100%);
    color: #FFD700;
    box-shadow:
        0 0 20px rgba(255, 215, 0, 0.6),
        inset 0 1px 2px rgba(255, 255, 255, 0.2);
}

.tier-price {
    font-size: 0.7rem;
    opacity: 0.6;
    margin-top: 3px;
    display: block;
}

/* ┌─────────────────────────────────────────────────────────────────────────┐
   │ 11.2 MODULE HARDWARE STATES - Power Down/Cyan/Gold                     │
   └─────────────────────────────────────────────────────────────────────────┘ */

/* Powered Down State - Basic Tier Locked Modules */
.module-locked {
    opacity: 0.3;
    pointer-events: none;
    filter: grayscale(0.8);
    position: relative;
}

.module-locked::before {
    content: '🔒';
    position: absolute;
    top: 10px;
    right: 10px;
    font-size: 1.5rem;
    opacity: 0.4;
    z-index: 10;
}

.module-locked .section-title,
.module-locked .control-name,
.module-locked .control-value {
    color: #444444 !important;
    text-shadow: none !important;
}

.module-locked input[type="range"]::-webkit-slider-thumb {
    background: radial-gradient(circle at 35% 35%, #2a2a2f 0%, #0d0d0f 100%);
    box-shadow: none;
}

/* Cyan Active State - Advanced Tier */
.module-cyan .section-title {
    color: #00d4ff !important;
    text-shadow: 0 0 8px rgba(0, 212, 255, 0.6);
}

.module-cyan .control-value,
.module-cyan .meter-value {
    color: #00d4ff !important;
    text-shadow: 0 0 12px rgba(0, 212, 255, 0.8);
}

.module-cyan input[type="range"]::-webkit-slider-track {
    background: linear-gradient(to right, #0a0a0c 0%, #00d4ff 100%);
}

/* Gold Legendary State - Premium Tier */
.module-gold .section-title {
    color: #FFD700 !important;
    text-shadow: 0 0 12px rgba(255, 215, 0, 0.8);
}

.module-gold .control-value,
.module-gold .meter-value {
    color: #FFD700 !important;
    text-shadow: 0 0 16px rgba(255, 215, 0, 1.0);
}

.module-gold input[type="range"]::-webkit-slider-track {
    background: linear-gradient(to right, #0a0a0c 0%, #FFD700 100%);
}

.module-gold input[type="range"]::-webkit-slider-thumb {
    background: radial-gradient(circle at 35% 35%, #FFD700 0%, #8B6914 100%);
    box-shadow:
        0 2px 8px rgba(255, 215, 0, 0.6),
        inset 0 1px 3px rgba(255, 255, 255, 0.4);
}

/* Gold vacuum tube glow behind chassis */
.tier-premium .app-container::after {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(circle at 50% 50%, rgba(255, 140, 0, 0.03) 0%, transparent 60%);
    pointer-events: none;
    z-index: -1;
}

/* ┌─────────────────────────────────────────────────────────────────────────┐
   │ 11.3 POWER-ON FLICKER ANIMATION - Hardware Warming Up                  │
   └─────────────────────────────────────────────────────────────────────────┘ */

@keyframes powerOnFlicker {
    0% {
        opacity: 0;
        filter: brightness(0.3);
    }
    10% {
        opacity: 0.3;
        filter: brightness(0.5);
    }
    15% {
        opacity: 0.1;
        filter: brightness(0.2);
    }
    30% {
        opacity: 0.7;
        filter: brightness(0.9);
    }
    40% {
        opacity: 0.4;
        filter: brightness(0.6);
    }
    55% {
        opacity: 0.9;
        filter: brightness(1.1);
    }
    70% {
        opacity: 0.6;
        filter: brightness(0.8);
    }
    100% {
        opacity: 1;
        filter: brightness(1);
    }
}

.module-powering-on {
    animation: powerOnFlicker 0.8s ease-out;
}

/* ┌─────────────────────────────────────────────────────────────────────────┐
   │ 11.4 FEATURE LOCK TOOLTIP - "Premium Hardware Required"                │
   └─────────────────────────────────────────────────────────────────────────┘ */

.feature-lock-tooltip {
    position: absolute;
    bottom: 120%;
    left: 50%;
    transform: translateX(-50%);
    background: rgba(0, 0, 0, 0.95);
    border: 1px solid #FFD700;
    border-radius: 8px;
    padding: 12px 16px;
    font-family: 'Roboto Mono', monospace;
    font-size: 0.75rem;
    color: #FFD700;
    white-space: nowrap;
    pointer-events: none;
    opacity: 0;
    transition: opacity 0.3s ease;
    z-index: 10000;
    box-shadow:
        0 0 20px rgba(255, 215, 0, 0.4),
        inset 0 1px 1px rgba(255, 215, 0, 0.2);
}

.feature-lock-tooltip::before {
    content: '🔒';
    margin-right: 8px;
}

.feature-lock-tooltip::after {
    content: '';
    position: absolute;
    top: 100%;
    left: 50%;
    transform: translateX(-50%);
    border: 6px solid transparent;
    border-top-color: #FFD700;
}

.module-locked:hover .feature-lock-tooltip {
    opacity: 1;
}

/* ┌─────────────────────────────────────────────────────────────────────────┐
   │ 11.5 LASER-ETCHED SPEC SHEET PRICING - Technical Plate                 │
   └─────────────────────────────────────────────────────────────────────────┘ */

.spec-sheet-container {
    position: fixed;
    bottom: 20px;
    right: 20px;
    background: linear-gradient(180deg, #1a1a1f 0%, #0d0d0f 100%);
    border: 2px solid #2a2a2f;
    border-radius: 12px;
    padding: 20px 25px;
    box-shadow:
        inset 0 1px 2px rgba(255, 255, 255, 0.1),
        0 8px 32px rgba(0, 0, 0, 0.8);
    z-index: 9998;
}

.spec-sheet-title {
    font-family: 'Roboto Mono', monospace;
    font-size: 0.65rem;
    text-transform: uppercase;
    letter-spacing: 2px;
    color: rgba(0, 255, 136, 0.7);
    margin-bottom: 15px;
    text-shadow: 0 0 8px rgba(0, 255, 136, 0.3);
    border-bottom: 1px solid rgba(0, 255, 136, 0.2);
    padding-bottom: 8px;
}

.spec-sheet-grid {
    display: grid;
    gap: 12px;
}

.spec-row {
    display: grid;
    grid-template-columns: 80px 120px 80px;
    align-items: center;
    gap: 15px;
    font-family: 'Roboto Mono', monospace;
    font-size: 0.75rem;
    padding: 10px;
    background: rgba(0, 0, 0, 0.3);
    border-radius: 6px;
    transition: all 0.3s ease;
}

.spec-row:hover {
    background: rgba(0, 0, 0, 0.5);
    box-shadow: inset 0 0 12px rgba(0, 255, 136, 0.1);
}

.spec-tier {
    color: rgba(255, 255, 255, 0.9);
    font-weight: 700;
}

.spec-features {
    color: rgba(255, 255, 255, 0.6);
    font-size: 0.65rem;
    line-height: 1.4;
}

.spec-price {
    color: #00ff88;
    font-weight: 700;
    font-size: 0.85rem;
    text-shadow: 0 0 8px rgba(0, 255, 136, 0.5);
    text-align: right;
}

.spec-note {
    font-family: 'Roboto Mono', monospace;
    font-size: 0.6rem;
    color: rgba(255, 255, 255, 0.4);
    margin-top: 12px;
    text-align: center;
    font-style: italic;
}

/* ┌─────────────────────────────────────────────────────────────────────────┐
   │ 11.6 SLIDE-OUT CHECKOUT TRAY - Metal Drawer                            │
   └─────────────────────────────────────────────────────────────────────────┘ */

.checkout-tray {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    height: 0;
    background: linear-gradient(180deg, #1a1a24 0%, #0f0f16 100%);
    border-top: 2px solid #2a2a2f;
    box-shadow:
        0 -8px 32px rgba(0, 0, 0, 0.9),
        inset 0 1px 2px rgba(255, 255, 255, 0.1);
    overflow: hidden;
    transition: height 0.5s cubic-bezier(0.34, 1.56, 0.64, 1);
    z-index: 10000;
}

.checkout-tray.open {
    height: 500px;
}

.checkout-tray-content {
    padding: 40px;
    max-width: 800px;
    margin: 0 auto;
}

.checkout-header {
    text-align: center;
    margin-bottom: 30px;
}

.checkout-title {
    font-family: 'Inter', sans-serif;
    font-size: 1.8rem;
    font-weight: 800;
    background: linear-gradient(135deg, #00d4ff 0%, #FFD700 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    margin-bottom: 10px;
}

.checkout-subtitle {
    font-family: 'Roboto Mono', monospace;
    font-size: 0.85rem;
    color: rgba(255, 255, 255, 0.5);
    letter-spacing: 1px;
}

.checkout-tier-info {
    background: rgba(0, 0, 0, 0.4);
    border: 1px solid rgba(255, 215, 0, 0.3);
    border-radius: 12px;
    padding: 20px;
    margin-bottom: 25px;
}

.checkout-tier-name {
    font-family: 'Inter', sans-serif;
    font-size: 1.2rem;
    font-weight: 700;
    color: #FFD700;
    margin-bottom: 10px;
}

.checkout-tier-price {
    font-family: 'Roboto Mono', monospace;
    font-size: 2rem;
    font-weight: 700;
    color: #00ff88;
    text-shadow: 0 0 12px rgba(0, 255, 136, 0.6);
}

.checkout-tier-features {
    margin-top: 15px;
    font-size: 0.8rem;
    color: rgba(255, 255, 255, 0.7);
    line-height: 1.8;
}

.checkout-tier-features li {
    margin-bottom: 5px;
}

.checkout-tier-features li::before {
    content: '✓ ';
    color: #00ff88;
    font-weight: 700;
    margin-right: 8px;
}

.stripe-form-container {
    background: rgba(0, 0, 0, 0.3);
    border: 1px solid rgba(0, 212, 255, 0.2);
    border-radius: 12px;
    padding: 25px;
}

.stripe-element {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 8px;
    padding: 14px;
    margin-bottom: 15px;
    transition: all 0.3s ease;
}

.stripe-element:hover {
    border-color: #00d4ff;
    box-shadow: 0 0 12px rgba(0, 212, 255, 0.2);
}

.checkout-submit-btn {
    width: 100%;
    padding: 18px;
    background: linear-gradient(135deg, #00d4ff 0%, #FFD700 100%);
    border: none;
    border-radius: 10px;
    font-family: 'Inter', sans-serif;
    font-size: 1.1rem;
    font-weight: 700;
    color: #000000;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 4px 16px rgba(0, 212, 255, 0.4);
}

.checkout-submit-btn:hover:not(:disabled) {
    transform: translateY(-2px);
    box-shadow: 0 8px 32px rgba(0, 212, 255, 0.6);
}

.checkout-submit-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.checkout-close-btn {
    position: absolute;
    top: 20px;
    right: 20px;
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 8px;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.3s ease;
    font-size: 1.2rem;
}

.checkout-close-btn:hover {
    background: rgba(255, 255, 255, 0.2);
    border-color: #00d4ff;
    box-shadow: 0 0 12px rgba(0, 212, 255, 0.4);
}

/* Dim background when checkout is open */
.checkout-backdrop {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0);
    pointer-events: none;
    transition: background 0.5s ease;
    z-index: 9999;
}

.checkout-backdrop.active {
    background: rgba(0, 0, 0, 0.7);
    pointer-events: auto;
}