/* Modern CSS Reset & CSS Variables */
:root {
    --bg-color: #121212;
    --card-bg: #1e1e1e;
    --border-color: #333333;
    --text-primary: #e0e0e0;
    --text-secondary: #a0a0a0;
    --text-muted: #707070;
    
    /* Monochromatic Accent Colors */
    --accent-cyan: #ffffff;
    --accent-purple: #e0e0e0;
    --accent-magenta: #cccccc;
    
    /* Strength colors - Monochromatic opacity scale */
    --str-0: rgba(255, 255, 255, 0.2);
    --str-1: rgba(255, 255, 255, 0.4);
    --str-2: rgba(255, 255, 255, 0.6);
    --str-3: rgba(255, 255, 255, 0.8);
    --str-4: rgba(255, 255, 255, 1.0);
    --str-5: #ffffff;
    
    --transition-speed: 0.2s;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    background-color: var(--bg-color);
    color: var(--text-primary);
    font-family: 'JetBrains Mono', monospace;
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    overflow-x: hidden;
    position: relative;
}

/* Removed Ambient Orbs */

/* App Layout Container */
.app-container {
    width: 100%;
    max-width: 480px;
    padding: 20px;
    z-index: 10;
}

.app-header {
    text-align: center;
    margin-bottom: 24px;
}

.logo {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    margin-bottom: 6px;
}

.logo-icon {
    color: var(--accent-cyan);
    filter: drop-shadow(0 0 8px rgba(0, 242, 254, 0.6));
}

.app-header h1 {
    font-size: 20px;
    font-weight: 700;
    letter-spacing: 1px;
    color: var(--text-primary);
}

.subtitle {
    font-size: 13px;
    color: var(--text-secondary);
    letter-spacing: 0.5px;
}

/* Flat Card Panel */
.glass-card {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 30px;
    transition: border var(--transition-speed);
}

.glass-card:hover {
    border-color: #555555;
}

/* Password Display Wrapper */
.password-display-wrapper {
    position: relative;
    background: #151515;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    padding: 8px 16px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 24px;
    transition: border var(--transition-speed);
}

.password-display-wrapper:focus-within {
    border-color: #777777;
}

.password-input {
    width: 100%;
    background: transparent;
    border: none;
    outline: none;
    color: #ffffff;
    font-family: 'JetBrains Mono', monospace;
    font-size: 19px;
    font-weight: 500;
    letter-spacing: 0.5px;
    padding: 12px 0;
    overflow-x: auto;
    white-space: nowrap;
    text-overflow: ellipsis;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

.spinning {
    animation: spin 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Hide scrollbar for password input */
.password-input::-webkit-scrollbar {
    display: none;
}
.password-input {
    -ms-overflow-style: none;  /* IE and Edge */
    scrollbar-width: none;  /* Firefox */
}

.display-actions {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-left: 12px;
}

.action-btn {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 12px;
    width: 42px;
    height: 42px;
    display: flex;
    justify-content: center;
    align-items: center;
    color: var(--text-secondary);
    cursor: pointer;
    position: relative;
    transition: all var(--transition-speed) cubic-bezier(0.4, 0, 0.2, 1);
}

.action-btn:hover {
    background: rgba(255, 255, 255, 0.08);
    border-color: rgba(255, 255, 255, 0.2);
    color: #ffffff;
    transform: translateY(-2px);
}

.action-btn:active {
    transform: translateY(0);
}

/* Specific button styles */
#btn-regenerate:hover {
    color: #ffffff;
    border-color: #777777;
}

#btn-regenerate:hover .icon-refresh {
    transform: rotate(180deg);
}

.icon-refresh {
    transition: transform 0.5s ease;
}

#btn-copy:hover {
    color: #ffffff;
    border-color: #777777;
}

/* Tooltip design */
.tooltip {
    position: absolute;
    bottom: calc(100% + 10px);
    left: 50%;
    transform: translateX(-50%) translateY(4px);
    background: rgba(15, 17, 28, 0.95);
    border: 1px solid rgba(255, 255, 255, 0.15);
    color: #ffffff;
    font-size: 11px;
    font-weight: 500;
    padding: 5px 10px;
    border-radius: 6px;
    opacity: 0;
    pointer-events: none;
    white-space: nowrap;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.3);
    transition: all var(--transition-speed) ease;
}

.tooltip::after {
    content: '';
    position: absolute;
    top: 100%;
    left: 50%;
    transform: translateX(-50%);
    border-width: 5px;
    border-style: solid;
    border-color: rgba(15, 17, 28, 0.95) transparent transparent transparent;
}

.action-btn:hover .tooltip {
    opacity: 1;
    transform: translateX(-50%) translateY(0);
}

/* Copy State Classes */
.action-btn.copied {
    background: rgba(0, 242, 254, 0.1);
    color: var(--accent-cyan);
    border-color: var(--accent-cyan);
}

/* Settings Controls Section */
.controls-section {
    display: flex;
    flex-direction: column;
    gap: 20px;
    margin-bottom: 24px;
}

.control-group {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.control-group.border-top {
    border-top: 1px solid rgba(255, 255, 255, 0.06);
    padding-top: 20px;
}

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

.control-header label {
    font-size: 14px;
    font-weight: 500;
    color: var(--text-secondary);
}

.badge {
    background: #151515;
    border: 1px solid var(--border-color);
    padding: 4px 10px;
    border-radius: 4px;
    font-family: 'JetBrains Mono', monospace;
    font-size: 13px;
    font-weight: 700;
    color: var(--text-primary);
}

.section-label {
    font-size: 13px;
    font-weight: 600;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 1px;
}

/* Custom Range Slider */
.slider-wrapper {
    position: relative;
    width: 100%;
    height: 6px;
    margin: 10px 0;
}

.range-slider {
    -webkit-appearance: none;
    width: 100%;
    height: 100%;
    border-radius: 3px;
    background: rgba(255, 255, 255, 0.06);
    outline: none;
    transition: background 0.3s;
}

.range-slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 14px;
    height: 14px;
    border-radius: 4px;
    background: #ffffff;
    border: 1px solid var(--border-color);
    cursor: pointer;
    transition: transform var(--transition-speed) ease, background-color var(--transition-speed);
}

.range-slider::-webkit-slider-thumb:hover {
    transform: scale(1.2);
    background-color: var(--accent-cyan);
}

.range-slider::-moz-range-thumb {
    width: 14px;
    height: 14px;
    border-radius: 4px;
    background: #ffffff;
    border: 1px solid var(--border-color);
    cursor: pointer;
    transition: transform var(--transition-speed) ease, background-color var(--transition-speed);
}

.range-slider::-moz-range-thumb:hover {
    transform: scale(1.2);
    background-color: var(--accent-cyan);
}

/* Grid Checkboxes */
.checkbox-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
}

/* Custom Checkbox Design */
.custom-checkbox {
    display: flex;
    align-items: center;
    position: relative;
    padding-left: 28px;
    cursor: pointer;
    font-size: 14px;
    font-weight: 500;
    color: var(--text-primary);
    user-select: none;
    height: 24px;
}

.custom-checkbox input {
    position: absolute;
    opacity: 0;
    cursor: pointer;
    height: 0;
    width: 0;
}

.checkmark {
    position: absolute;
    top: 2px;
    left: 0;
    height: 18px;
    width: 18px;
    background-color: #151515;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    transition: all var(--transition-speed) cubic-bezier(0.4, 0, 0.2, 1);
}

.custom-checkbox:hover input ~ .checkmark {
    border-color: #777777;
    background-color: #222222;
}

.custom-checkbox input:checked ~ .checkmark {
    background-color: #ffffff;
    border-color: #ffffff;
}

/* Create the checkmark indicator */
.checkmark::after {
    content: "";
    position: absolute;
    display: none;
    left: 6px;
    top: 2px;
    width: 4px;
    height: 9px;
    border: solid #000;
    border-width: 0 2px 2px 0;
    transform: rotate(45deg);
}

.custom-checkbox input:checked ~ .checkmark::after {
    display: block;
}

/* Special styling for custom toggle option */
.toggle-option {
    padding-left: 32px;
    height: auto;
}

.toggle-option .checkmark {
    height: 20px;
    width: 20px;
    border-radius: 6px;
    top: 0;
}

.toggle-option .checkmark::after {
    left: 6px;
    top: 2px;
}

.subtext {
    display: block;
    font-size: 11px;
    color: var(--text-muted);
    font-weight: 400;
    margin-top: 2px;
}

/* Password Strength & Metrics Panel */
.metrics-section {
    background: rgba(0, 0, 0, 0.18);
    border: 1px solid rgba(255, 255, 255, 0.04);
    border-radius: 16px;
    padding: 16px 20px;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.metrics-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 12px;
    font-weight: 600;
    color: var(--text-secondary);
    letter-spacing: 0.5px;
}

.metrics-header strong {
    font-family: 'JetBrains Mono', monospace;
    font-size: 13px;
    color: #ffffff;
}

/* 5-segment meter styling */
.strength-meter {
    display: flex;
    gap: 6px;
    width: 100%;
    height: 6px;
    border-radius: 3px;
}

.meter-segment {
    flex: 1;
    height: 100%;
    background-color: rgba(255, 255, 255, 0.06);
    border-radius: 3px;
    transition: background-color 0.4s ease, box-shadow 0.4s ease;
}

/* Visual Glow classes */
.meter-segment.active-0 { background-color: var(--str-0); }
.meter-segment.active-1 { background-color: var(--str-1); }
.meter-segment.active-2 { background-color: var(--str-2); }
.meter-segment.active-3 { background-color: var(--str-3); }
.meter-segment.active-4 { background-color: var(--str-4); }
.meter-segment.active-5 { background-color: var(--str-5); }

.crack-time-wrapper {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 12px;
    color: var(--text-secondary);
}

.icon-clock {
    color: var(--text-muted);
}

#crack-time {
    font-weight: 500;
}

/* Active coloring for crack time text based on strength rating */
.strength-label-0 { color: var(--str-0) !important; }
.strength-label-1 { color: var(--str-1) !important; }
.strength-label-2 { color: var(--str-2) !important; }
.strength-label-3 { color: var(--str-3) !important; }
.strength-label-4 { color: var(--str-4) !important; }
.strength-label-5 { color: var(--str-5) !important; font-weight: 700 !important; }

/* App Footer Info */
.app-footer {
    text-align: center;
    margin-top: 24px;
    font-size: 11px;
    color: var(--text-muted);
}

/* Responsiveness overrides */
@media (max-width: 480px) {
    .glass-card {
        padding: 20px;
        border-radius: 20px;
    }
    
    .checkbox-grid {
        grid-template-columns: 1fr;
        gap: 10px;
    }
    
    .password-input {
        font-size: 17px;
    }
}