/* === CSS Variables for Theming === */
:root {
    /* Cyber Theme (Default) */
    --primary-bg: linear-gradient(135deg, #0ea5e9 0%, #22c55e 100%);
    --container-bg: rgba(15, 23, 42, 0.95);
    --text-primary: #e2e8f0;
    --text-secondary: #94a3b8;
    --accent-1: #0ea5e9;
    --accent-2: #22c55e;
    --accent-3: #8b5cf6;
    --danger: #ef4444;
    --warning: #f59e0b;
    --success: #10b981;
    --border-color: rgba(14, 165, 233, 0.3);
    --shadow-color: rgba(14, 165, 233, 0.2);
    --card-bg: rgba(30, 41, 59, 0.8);
}

[data-theme="matrix"] {
    --primary-bg: linear-gradient(135deg, #00ff41 0%, #008f11 100%);
    --container-bg: rgba(0, 0, 0, 0.95);
    --text-primary: #00ff41;
    --text-secondary: #008f11;
    --accent-1: #00ff41;
    --accent-2: #008f11;
    --accent-3: #003b00;
    --border-color: rgba(0, 255, 65, 0.3);
    --shadow-color: rgba(0, 255, 65, 0.2);
    --card-bg: rgba(0, 20, 0, 0.8);
}

[data-theme="neon"] {
    --primary-bg: linear-gradient(135deg, #ff00ff 0%, #00ffff 100%);
    --container-bg: rgba(10, 10, 35, 0.95);
    --text-primary: #ffffff;
    --text-secondary: #b3b3ff;
    --accent-1: #ff00ff;
    --accent-2: #00ffff;
    --accent-3: #ffff00;
    --border-color: rgba(255, 0, 255, 0.3);
    --shadow-color: rgba(255, 0, 255, 0.2);
    --card-bg: rgba(30, 10, 40, 0.8);
}

[data-theme="sunset"] {
    --primary-bg: linear-gradient(135deg, #ff6b6b 0%, #ffa500 50%, #ffd93d 100%);
    --container-bg: rgba(25, 15, 35, 0.95);
    --text-primary: #ffffff;
    --text-secondary: #ffb6c1;
    --accent-1: #ff6b6b;
    --accent-2: #ffa500;
    --accent-3: #ffd93d;
    --border-color: rgba(255, 107, 107, 0.3);
    --shadow-color: rgba(255, 107, 107, 0.2);
    --card-bg: rgba(45, 25, 45, 0.8);
}

[data-theme="forest"] {
    --primary-bg: linear-gradient(135deg, #22c55e 0%, #15803d 100%);
    --container-bg: rgba(15, 35, 20, 0.95);
    --text-primary: #dcfce7;
    --text-secondary: #86efac;
    --accent-1: #22c55e;
    --accent-2: #15803d;
    --accent-3: #14532d;
    --border-color: rgba(34, 197, 94, 0.3);
    --shadow-color: rgba(34, 197, 94, 0.2);
    --card-bg: rgba(20, 45, 25, 0.8);
}

/* === Base Styles === */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Poppins', sans-serif;
    background: var(--primary-bg);
    color: var(--text-primary);
    min-height: 100vh;
    transition: all 0.5s ease;
    line-height: 1.6;
}

#cyber-bg-canvas {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    z-index: -1;
    pointer-events: none;
}

/* === Settings Container === */
.settings-container {
    position: fixed;
    top: 1rem;
    right: 1rem;
    z-index: 1000;
    display: flex;
    flex-direction: column;
    align-items: flex-end;
}

.settings-btn {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    padding: 0.75rem;
    border-radius: 50%;
    cursor: pointer;
    transition: all 0.3s ease;
    font-size: 1.2rem;
    width: 50px;
    height: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
    backdrop-filter: blur(10px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
}

.settings-btn:hover {
    background: var(--accent-1);
    transform: rotate(90deg) scale(1.1);
    box-shadow: 0 6px 20px var(--shadow-color);
}

.settings-btn.active {
    background: var(--accent-1);
    transform: rotate(90deg);
}

/* === Theme Selector === */
.theme-selector {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 1.5rem;
    margin-top: 0.75rem;
    backdrop-filter: blur(10px);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
    min-width: 200px;
    animation: slideDown 0.3s ease;
}

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

.theme-selector h4 {
    margin-bottom: 1rem;
    color: var(--accent-1);
    text-align: center;
    font-size: 1.1rem;
}

.theme-options {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.theme-btn {
    background: none;
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    padding: 0.75rem 1rem;
    border-radius: 12px;
    cursor: pointer;
    transition: all 0.3s ease;
    font-size: 0.9rem;
    font-weight: 500;
    opacity: 0.7;
    display: flex;
    align-items: center;
    gap: 0.75rem;
    text-align: left;
}

.theme-btn:hover {
    opacity: 1;
    transform: translateX(5px);
    border-color: var(--accent-1);
}

.theme-btn.active {
    opacity: 1;
    background: var(--accent-1);
    color: var(--container-bg);
    transform: translateX(5px);
    box-shadow: 0 4px 12px var(--shadow-color);
}

/* === Container === */
.container {
    max-width: 800px;
    margin: 2rem auto;
    background: var(--container-bg);
    padding: 2.5rem;
    border-radius: 24px;
    box-shadow: 
        0 0 60px var(--shadow-color),
        0 8px 30px rgba(0, 0, 0, 0.3);
    border: 1px solid var(--border-color);
    backdrop-filter: blur(10px);
    position: relative;
    overflow: hidden;
}

.container::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 2px;
    background: linear-gradient(90deg, transparent, var(--accent-1), transparent);
    animation: scanline 3s linear infinite;
}

@keyframes scanline {
    0% { left: -100%; }
    100% { left: 100%; }
}

/* === Header === */
.app-header {
    text-align: center;
    margin-bottom: 2.5rem;
}

.app-header h1 {
    font-family: 'Orbitron', monospace;
    font-size: 2.8rem;
    font-weight: 900;
    margin-bottom: 0.5rem;
    background: linear-gradient(135deg, var(--accent-1), var(--accent-2));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    text-shadow: 0 0 30px var(--shadow-color);
}

.cyber-text {
    font-family: 'Orbitron', monospace;
    letter-spacing: 2px;
}

.tagline {
    color: var(--text-secondary);
    font-size: 1.1rem;
    font-weight: 300;
}

/* === Input Section === */
.input-section {
    margin-bottom: 2rem;
}

.input-label {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 0.75rem;
    font-weight: 600;
    color: var(--text-primary);
}

.password-input-group {
    display: flex;
    gap: 0.75rem;
    align-items: center;
}

#password {
    flex: 1;
    padding: 1rem 1.25rem;
    font-size: 1.1rem;
    background: var(--card-bg);
    border: 2px solid var(--border-color);
    border-radius: 12px;
    color: var(--text-primary);
    transition: all 0.3s ease;
    font-family: 'Poppins', monospace;
}

#password:focus {
    outline: none;
    border-color: var(--accent-1);
    box-shadow: 0 0 20px var(--shadow-color);
}

.input-buttons {
    display: flex;
    gap: 0.5rem;
}

.icon-btn {
    padding: 0.75rem;
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    color: var(--text-primary);
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    min-width: 44px;
    min-height: 44px;
}

.icon-btn:hover {
    background: var(--accent-1);
    transform: translateY(-2px);
    box-shadow: 0 5px 15px var(--shadow-color);
}

/* === Analysis Section === */
.analysis-section {
    background: var(--card-bg);
    padding: 1.5rem;
    border-radius: 16px;
    margin-bottom: 2rem;
    border: 1px solid var(--border-color);
}

.strength-display {
    margin-bottom: 1.5rem;
}

.strength-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
    font-weight: 600;
}

#strength-meter {
    height: 12px;
    background: var(--container-bg);
    border-radius: 6px;
    overflow: hidden;
    position: relative;
    margin-bottom: 0.5rem;
}

#strength-bar {
    height: 100%;
    width: 0%;
    border-radius: 6px;
    transition: all 0.5s ease;
    background: linear-gradient(90deg, var(--danger), var(--warning), var(--success));
    position: relative;
}

#strength-bar::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(90deg, 
        transparent 0%, 
        rgba(255,255,255,0.2) 50%, 
        transparent 100%);
    animation: shimmer 2s infinite;
}

@keyframes shimmer {
    0% { transform: translateX(-100%); }
    100% { transform: translateX(100%); }
}

.strength-labels {
    display: flex;
    justify-content: space-between;
    font-size: 0.75rem;
    color: var(--text-secondary);
}

.security-metrics {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1rem;
}

.metric {
    text-align: center;
    padding: 1rem;
    background: var(--container-bg);
    border-radius: 12px;
    border: 1px solid var(--border-color);
}

.metric-label {
    display: block;
    font-size: 0.9rem;
    color: var(--text-secondary);
    margin-bottom: 0.5rem;
}

.metric-value {
    display: block;
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--accent-1);
}

/* === Criteria Section === */
.criteria-section {
    margin-bottom: 2rem;
}

.criteria-section h3 {
    margin-bottom: 1rem;
    color: var(--accent-1);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.criteria-list {
    list-style: none;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 0.75rem;
}

.criteria-list li {
    padding: 0.75rem 1rem;
    background: var(--card-bg);
    border-radius: 8px;
    border: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    gap: 0.75rem;
    transition: all 0.3s ease;
}

.criteria-list li:hover {
    transform: translateX(5px);
    border-color: var(--accent-1);
}

/* === Policy Section === */
.policy-section {
    margin-bottom: 2rem;
}

.section-toggle {
    width: 100%;
    padding: 1rem 1.5rem;
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    color: var(--text-primary);
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: all 0.3s ease;
    font-weight: 600;
}

.section-toggle:hover {
    background: var(--accent-1);
    transform: translateY(-2px);
}

.toggle-icon {
    transition: transform 0.3s ease;
}

.section-toggle[aria-expanded="true"] .toggle-icon {
    transform: rotate(180deg);
}

.collapsible-panel {
    margin-top: 1rem;
    padding: 1.5rem;
    background: var(--card-bg);
    border-radius: 12px;
    border: 1px solid var(--border-color);
}

.policy-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.policy-item {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.policy-item label {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    cursor: pointer;
}

input[type="range"] {
    width: 100%;
    height: 6px;
    background: var(--container-bg);
    border-radius: 3px;
    outline: none;
    -webkit-appearance: none;
}

input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 18px;
    height: 18px;
    background: var(--accent-1);
    border-radius: 50%;
    cursor: pointer;
}

input[type="checkbox"] {
    width: 18px;
    height: 18px;
    accent-color: var(--accent-1);
}

/* === Buttons === */
.primary-btn {
    background: linear-gradient(135deg, var(--accent-1), var(--accent-2));
    color: white;
    border: none;
    padding: 1rem 2rem;
    border-radius: 12px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    justify-content: center;
}

.primary-btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 25px var(--shadow-color);
}

.secondary-btn {
    background: var(--card-bg);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
    padding: 0.75rem 1.5rem;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.secondary-btn:hover {
    background: var(--accent-1);
    transform: translateY(-2px);
}

.action-btn {
    background: var(--card-bg);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
    padding: 1rem 1.5rem;
    border-radius: 12px;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-weight: 500;
}

.action-btn:hover {
    background: var(--accent-1);
    transform: translateY(-2px);
    box-shadow: 0 5px 15px var(--shadow-color);
}

.action-buttons {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
    margin-bottom: 1.5rem;
}

/* === Generator Section === */
.generator-section, .history-section, .export-section, .tips-section {
    margin-bottom: 2rem;
}

.section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
}

.section-header h2 {
    color: var(--accent-1);
    font-size: 1.5rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.generator-controls {
    display: grid;
    gap: 1.5rem;
    margin-bottom: 1.5rem;
}

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

.checkbox-group {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 0.75rem;
}

.generator-output {
    display: flex;
    gap: 1rem;
    align-items: center;
}

#suggestion-output {
    flex: 1;
    padding: 1rem;
    background: var(--container-bg);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    color: var(--text-primary);
    font-family: 'Poppins', monospace;
    font-size: 1.1rem;
}

.output-actions {
    display: flex;
    gap: 0.5rem;
}

/* === History Section === */
.history-list {
    max-height: 300px;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.history-item {
    padding: 1rem;
    background: var(--card-bg);
    border-radius: 8px;
    border: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.history-password {
    font-family: 'Poppins', monospace;
    letter-spacing: 1px;
}

.history-strength {
    padding: 0.25rem 0.75rem;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 600;
}

/* === Export Section === */
.export-section h3 {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 1rem;
}

.export-buttons {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 1rem;
}

.export-btn {
    background: var(--card-bg);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
    padding: 1rem;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    font-weight: 500;
}

.export-btn:hover {
    background: var(--accent-1);
    transform: translateY(-2px);
}

/* === Tips Section === */
.tips-section h3 {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 1rem;
}

.tips-list {
    list-style: none;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 0.75rem;
}

.tips-list li {
    padding: 1rem;
    background: var(--card-bg);
    border-radius: 8px;
    border-left: 4px solid var(--accent-1);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

/* === Result Messages === */
.result-message {
    padding: 1rem;
    border-radius: 8px;
    margin: 1rem 0;
    text-align: center;
    font-weight: 500;
}

.result-message.success {
    background: rgba(16, 185, 129, 0.1);
    border: 1px solid var(--success);
    color: var(--success);
}

.result-message.warning {
    background: rgba(245, 158, 11, 0.1);
    border: 1px solid var(--warning);
    color: var(--warning);
}

.result-message.error {
    background: rgba(239, 68, 68, 0.1);
    border: 1px solid var(--danger);
    color: var(--danger);
}

/* === Tooltip === */
.tooltip {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 20px;
    height: 20px;
    background: var(--accent-1);
    color: var(--container-bg);
    border-radius: 50%;
    font-size: 0.8rem;
    font-weight: bold;
    cursor: help;
    transition: all 0.3s ease;
}

.tooltip:hover {
    transform: scale(1.1);
    background: var(--accent-2);
}

/* === Utility Classes === */
.hidden {
    display: none !important;
}

/* === Font Awesome Icon Adjustments === */
.fas {
    font-size: 0.9em;
}

/* === Responsive Design === */
@media (max-width: 768px) {
    .container {
        margin: 1rem;
        padding: 1.5rem;
        border-radius: 16px;
    }
    
    .app-header h1 {
        font-size: 2rem;
    }
    
    .security-metrics {
        grid-template-columns: 1fr;
    }
    
    .action-buttons {
        grid-template-columns: 1fr;
    }
    
    .policy-grid {
        grid-template-columns: 1fr;
    }
    
    .checkbox-group {
        grid-template-columns: 1fr;
    }
    
    .generator-output {
        flex-direction: column;
    }
    
    .settings-container {
        top: 0.5rem;
        right: 0.5rem;
    }
    
    .theme-selector {
        position: fixed;
        top: 70px;
        right: 10px;
        left: 10px;
        min-width: auto;
    }
}

@media (max-width: 480px) {
    .container {
        margin: 0.5rem;
        padding: 1rem;
    }
    
    .app-header h1 {
        font-size: 1.5rem;
    }
    
    .password-input-group {
        flex-direction: column;
    }
    
    .input-buttons {
        width: 100%;
        justify-content: space-between;
    }
    
    .theme-btn span {
        display: none;
    }
    
    .theme-btn {
        padding: 0.75rem;
        justify-content: center;
    }
}