/* Material Design 3 - Google Gemini Dark Theme */
:root {
    /* Gemini Dark Color Palette */
    --md-sys-color-primary: #8AB4F8;
    --md-sys-color-on-primary: #003865;
    --md-sys-color-primary-container: #004A77;
    --md-sys-color-on-primary-container: #C2E7FF;
    
    --md-sys-color-secondary: #BDC7DC;
    --md-sys-color-on-secondary: #283041;
    --md-sys-color-secondary-container: #3E4758;
    --md-sys-color-on-secondary-container: #D9E3F8;
    
    --md-sys-color-tertiary: #E8BAF8;
    --md-sys-color-on-tertiary: #462953;
    --md-sys-color-tertiary-container: #5E3F6B;
    --md-sys-color-on-tertiary-container: #F6D9FF;
    
    --md-sys-color-surface: #1F1F1F;
    --md-sys-color-surface-variant: #2D2E30;
    --md-sys-color-on-surface: #E3E2E6;
    --md-sys-color-on-surface-variant: #C4C6CF;
    
    --md-sys-color-background: #131314;
    --md-sys-color-on-background: #E3E2E6;
    
    --md-sys-color-outline: #8E9099;
    --md-sys-color-outline-variant: #44464E;
    
    /* Elevation Shadows */
    --md-sys-elevation-level0: none;
    --md-sys-elevation-level1: 0px 1px 2px rgba(0, 0, 0, 0.3), 0px 1px 3px 1px rgba(0, 0, 0, 0.15);
    --md-sys-elevation-level2: 0px 1px 2px rgba(0, 0, 0, 0.3), 0px 2px 6px 2px rgba(0, 0, 0, 0.15);
    --md-sys-elevation-level3: 0px 4px 8px 3px rgba(0, 0, 0, 0.15), 0px 1px 3px rgba(0, 0, 0, 0.3);
    --md-sys-elevation-level4: 0px 6px 10px 4px rgba(0, 0, 0, 0.15), 0px 2px 3px rgba(0, 0, 0, 0.3);
    --md-sys-elevation-level5: 0px 8px 12px 6px rgba(0, 0, 0, 0.15), 0px 4px 4px rgba(0, 0, 0, 0.3);
    
    /* Shape System */
    --md-sys-shape-corner-extra-large: 32px;
    --md-sys-shape-corner-large: 24px;
    --md-sys-shape-corner-medium: 16px;
    --md-sys-shape-corner-small: 12px;
    --md-sys-shape-corner-extra-small: 8px;
    
    /* Typography Scale */
    --md-sys-typescale-display-large: 400 57px/64px 'Google Sans', 'Roboto', sans-serif;
    --md-sys-typescale-display-medium: 400 45px/52px 'Google Sans', 'Roboto', sans-serif;
    --md-sys-typescale-display-small: 400 36px/44px 'Google Sans', 'Roboto', sans-serif;
    
    --md-sys-typescale-headline-large: 400 32px/40px 'Google Sans', 'Roboto', sans-serif;
    --md-sys-typescale-headline-medium: 400 28px/36px 'Google Sans', 'Roboto', sans-serif;
    --md-sys-typescale-headline-small: 400 24px/32px 'Google Sans', 'Roboto', sans-serif;
    
    --md-sys-typescale-title-large: 500 22px/28px 'Google Sans', 'Roboto', sans-serif;
    --md-sys-typescale-title-medium: 500 16px/24px 'Google Sans', 'Roboto', sans-serif;
    --md-sys-typescale-title-small: 500 14px/20px 'Google Sans', 'Roboto', sans-serif;
    
    --md-sys-typescale-body-large: 400 16px/24px 'Roboto', sans-serif;
    --md-sys-typescale-body-medium: 400 14px/20px 'Roboto', sans-serif;
    --md-sys-typescale-body-small: 400 12px/16px 'Roboto', sans-serif;
    
    --md-sys-typescale-label-large: 500 14px/20px 'Roboto', sans-serif;
    --md-sys-typescale-label-medium: 500 12px/16px 'Roboto', sans-serif;
    --md-sys-typescale-label-small: 500 11px/16px 'Roboto', sans-serif;
    
    /* Motion */
    --md-sys-motion-easing-standard: cubic-bezier(0.4, 0.0, 0.2, 1);
    --md-sys-motion-easing-emphasized: cubic-bezier(0.2, 0.0, 0, 1);
    --md-sys-motion-duration-short1: 50ms;
    --md-sys-motion-duration-short2: 100ms;
    --md-sys-motion-duration-short3: 150ms;
    --md-sys-motion-duration-short4: 200ms;
    --md-sys-motion-duration-medium1: 250ms;
    --md-sys-motion-duration-medium2: 300ms;
    --md-sys-motion-duration-medium3: 350ms;
    --md-sys-motion-duration-medium4: 400ms;
    --md-sys-motion-duration-long1: 450ms;
    --md-sys-motion-duration-long2: 500ms;
}

/* Material You Surface Containers */
.md3-surface {
    background: var(--md-sys-color-surface);
    color: var(--md-sys-color-on-surface);
}

.md3-surface-container {
    background: linear-gradient(0deg, rgba(208, 188, 255, 0.05), rgba(208, 188, 255, 0.05)), var(--md-sys-color-surface);
}

.md3-surface-container-low {
    background: linear-gradient(0deg, rgba(208, 188, 255, 0.08), rgba(208, 188, 255, 0.08)), var(--md-sys-color-surface);
}

.md3-surface-container-high {
    background: linear-gradient(0deg, rgba(208, 188, 255, 0.11), rgba(208, 188, 255, 0.11)), var(--md-sys-color-surface);
}

.md3-surface-container-highest {
    background: linear-gradient(0deg, rgba(208, 188, 255, 0.14), rgba(208, 188, 255, 0.14)), var(--md-sys-color-surface);
}

/* MD3 Cards */
.md3-card {
    border-radius: var(--md-sys-shape-corner-large);
    box-shadow: var(--md-sys-elevation-level1);
    transition: all var(--md-sys-motion-duration-medium2) var(--md-sys-motion-easing-standard);
    overflow: hidden;
}

.md3-card-elevated {
    background: var(--md-sys-color-surface);
    box-shadow: var(--md-sys-elevation-level2);
}

.md3-card-filled {
    background: var(--md-sys-color-surface-variant);
    box-shadow: var(--md-sys-elevation-level0);
}

.md3-card-outlined {
    background: var(--md-sys-color-surface);
    border: 1px solid var(--md-sys-color-outline-variant);
    box-shadow: var(--md-sys-elevation-level0);
}

/* MD3 Typography Classes */
.md3-display-large {
    font: var(--md-sys-typescale-display-large);
}

.md3-display-medium {
    font: var(--md-sys-typescale-display-medium);
}

.md3-display-small {
    font: var(--md-sys-typescale-display-small);
}

.md3-headline-large {
    font: var(--md-sys-typescale-headline-large);
}

.md3-headline-medium {
    font: var(--md-sys-typescale-headline-medium);
}

.md3-headline-small {
    font: var(--md-sys-typescale-headline-small);
}

.md3-title-large {
    font: var(--md-sys-typescale-title-large);
}

.md3-title-medium {
    font: var(--md-sys-typescale-title-medium);
}

.md3-title-small {
    font: var(--md-sys-typescale-title-small);
}

.md3-body-large {
    font: var(--md-sys-typescale-body-large);
}

.md3-body-medium {
    font: var(--md-sys-typescale-body-medium);
}

.md3-body-small {
    font: var(--md-sys-typescale-body-small);
}

.md3-label-large {
    font: var(--md-sys-typescale-label-large);
}

.md3-label-medium {
    font: var(--md-sys-typescale-label-medium);
}

.md3-label-small {
    font: var(--md-sys-typescale-label-small);
}

/* MD3 Icon Button */
.md3-icon-button {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    background: transparent;
    border: none;
    cursor: pointer;
    transition: all var(--md-sys-motion-duration-short4) var(--md-sys-motion-easing-standard);
    position: relative;
    overflow: hidden;
}

.md3-icon-button::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: currentColor;
    opacity: 0;
    transition: opacity var(--md-sys-motion-duration-short4) var(--md-sys-motion-easing-standard);
}

.md3-icon-button:hover::before {
    opacity: 0.08;
}

.md3-icon-button:active::before {
    opacity: 0.12;
}

/* MD3 FAB (Floating Action Button) */
.md3-fab {
    position: fixed;
    width: 56px;
    height: 56px;
    border-radius: var(--md-sys-shape-corner-medium);
    background: var(--md-sys-color-primary-container);
    color: var(--md-sys-color-on-primary-container);
    box-shadow: var(--md-sys-elevation-level3);
    border: none;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--md-sys-motion-duration-medium2) var(--md-sys-motion-easing-standard);
}

.md3-fab:hover {
    box-shadow: var(--md-sys-elevation-level4);
}

.md3-fab-extended {
    width: auto;
    padding: 0 20px;
}

/* MD3 Chips */
.md3-chip {
    display: inline-flex;
    align-items: center;
    height: 32px;
    padding: 0 16px;
    border-radius: var(--md-sys-shape-corner-small);
    background: var(--md-sys-color-surface-variant);
    color: var(--md-sys-color-on-surface-variant);
    font: var(--md-sys-typescale-label-large);
    border: 1px solid transparent;
    cursor: pointer;
    transition: all var(--md-sys-motion-duration-short4) var(--md-sys-motion-easing-standard);
}

.md3-chip:hover {
    background: linear-gradient(0deg, rgba(208, 188, 255, 0.08), rgba(208, 188, 255, 0.08)), var(--md-sys-color-surface-variant);
}

.md3-chip-outlined {
    background: transparent;
    border-color: var(--md-sys-color-outline);
}

/* Ripple Effect */
.md3-ripple {
    position: relative;
    overflow: hidden;
}

.md3-ripple-effect {
    position: absolute;
    border-radius: 50%;
    background: currentColor;
    opacity: 0.12;
    transform: scale(0);
    animation: md3-ripple-animation 600ms ease-out;
}

@keyframes md3-ripple-animation {
    to {
        transform: scale(4);
        opacity: 0;
    }
}

/* Loading Indicator */
.md3-progress-circular {
    width: 48px;
    height: 48px;
    animation: md3-rotate 1.4s linear infinite;
}

@keyframes md3-rotate {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* Scrollbar Styling */
.md3-scrollbar::-webkit-scrollbar {
    width: 12px;
    height: 12px;
}

.md3-scrollbar::-webkit-scrollbar-track {
    background: var(--md-sys-color-surface);
    border-radius: 6px;
}

.md3-scrollbar::-webkit-scrollbar-thumb {
    background: var(--md-sys-color-outline-variant);
    border-radius: 6px;
    border: 2px solid var(--md-sys-color-surface);
}

.md3-scrollbar::-webkit-scrollbar-thumb:hover {
    background: var(--md-sys-color-outline);
}

/* Animation Classes */
.md3-fade-in {
    animation: md3-fade-in var(--md-sys-motion-duration-medium2) var(--md-sys-motion-easing-standard);
}

@keyframes md3-fade-in {
    from { opacity: 0; }
    to { opacity: 1; }
}

.md3-slide-up {
    animation: md3-slide-up var(--md-sys-motion-duration-medium3) var(--md-sys-motion-easing-emphasized);
}

@keyframes md3-slide-up {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.md3-scale-in {
    animation: md3-scale-in var(--md-sys-motion-duration-medium2) var(--md-sys-motion-easing-emphasized);
}

@keyframes md3-scale-in {
    from {
        opacity: 0;
        transform: scale(0.9);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}