/**
 * Material Design CSS Framework
 * የመዝሙር ጥናት ደብተር - Hymn Study Notebook
 * Version: 1.0
 */

/* ========================================
   CSS Variables - Material Design Colors
   ======================================== */
:root {
    /* Primary Colors - Deep Purple from Logo */
    --md-primary: #7C3AED;
    --md-primary-light: #A78BFA;
    --md-primary-dark: #5B21B6;
    --md-primary-50: #F5F3FF;
    --md-primary-100: #EDE9FE;
    --md-primary-200: #DDD6FE;
    --md-primary-rgb: 124, 58, 237;
    
    /* Secondary/Accent Colors */
    --md-accent: #8B5CF6;
    --md-accent-light: #A78BFA;
    --md-accent-dark: #7C3AED;
    
    /* Background Colors */
    --md-background: #FAFAFA;
    --md-surface: #FFFFFF;
    --md-surface-variant: #F5F5F5;
    
    /* Text Colors */
    --md-on-primary: #FFFFFF;
    --md-on-secondary: #000000;
    --md-on-background: #212121;
    --md-on-surface: #212121;
    --md-text-primary: #212121;
    --md-text-secondary: #757575;
    --md-text-disabled: #BDBDBD;
    --md-text-hint: #9E9E9E;
    
    /* State Colors */
    --md-error: #F44336;
    --md-error-light: #EF5350;
    --md-success: #4CAF50;
    --md-warning: #FF9800;
    --md-info: #2196F3;
    
    /* Divider & Border */
    --md-divider: #E0E0E0;
    --md-border: #BDBDBD;
    
    /* Shadows */
    --md-shadow-1: 0 1px 3px rgba(0,0,0,0.12), 0 1px 2px rgba(0,0,0,0.24);
    --md-shadow-2: 0 3px 6px rgba(0,0,0,0.16), 0 3px 6px rgba(0,0,0,0.23);
    --md-shadow-3: 0 10px 20px rgba(0,0,0,0.19), 0 6px 6px rgba(0,0,0,0.23);
    --md-shadow-4: 0 14px 28px rgba(0,0,0,0.25), 0 10px 10px rgba(0,0,0,0.22);
    --md-shadow-5: 0 19px 38px rgba(0,0,0,0.30), 0 15px 12px rgba(0,0,0,0.22);
    
    /* Spacing */
    --md-spacing-xs: 4px;
    --md-spacing-sm: 8px;
    --md-spacing-md: 16px;
    --md-spacing-lg: 24px;
    --md-spacing-xl: 32px;
    --md-spacing-xxl: 48px;
    
    /* Border Radius */
    --md-radius-sm: 4px;
    --md-radius-md: 8px;
    --md-radius-lg: 16px;
    --md-radius-xl: 24px;
    --md-radius-full: 9999px;
    
    /* Typography */
    --md-font-family: 'Roboto', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --md-font-family-display: 'Roboto', sans-serif;
    
    /* Transitions */
    --md-transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
    --md-transition-normal: 250ms cubic-bezier(0.4, 0, 0.2, 1);
    --md-transition-slow: 350ms cubic-bezier(0.4, 0, 0.2, 1);
    
    /* Z-index layers */
    --md-z-drawer: 100;
    --md-z-appbar: 200;
    --md-z-modal: 300;
    --md-z-snackbar: 400;
    --md-z-tooltip: 500;
}

/* ========================================
   Reset & Base Styles
   ======================================== */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--md-font-family);
    font-size: 1rem;
    line-height: 1.5;
    color: var(--md-text-primary);
    background-color: var(--md-background);
    min-height: 100vh;
}

a {
    color: var(--md-primary);
    text-decoration: none;
    transition: color var(--md-transition-fast);
}

a:hover {
    color: var(--md-primary-dark);
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

button, input, select, textarea {
    font-family: inherit;
    font-size: inherit;
}

/* ========================================
   Typography
   ======================================== */
.md-display-large {
    font-size: 3.5rem;
    font-weight: 400;
    line-height: 1.12;
    letter-spacing: -0.25px;
}

.md-display-medium {
    font-size: 2.75rem;
    font-weight: 400;
    line-height: 1.16;
}

.md-display-small {
    font-size: 2.25rem;
    font-weight: 400;
    line-height: 1.22;
}

.md-headline-large {
    font-size: 2rem;
    font-weight: 400;
    line-height: 1.25;
}

.md-headline-medium {
    font-size: 1.75rem;
    font-weight: 400;
    line-height: 1.29;
}

.md-headline-small {
    font-size: 1.5rem;
    font-weight: 400;
    line-height: 1.33;
}

.md-title-large {
    font-size: 1.375rem;
    font-weight: 500;
    line-height: 1.27;
}

.md-title-medium {
    font-size: 1rem;
    font-weight: 500;
    line-height: 1.5;
    letter-spacing: 0.15px;
}

.md-title-small {
    font-size: 0.875rem;
    font-weight: 500;
    line-height: 1.43;
    letter-spacing: 0.1px;
}

.md-body-large {
    font-size: 1rem;
    font-weight: 400;
    line-height: 1.5;
    letter-spacing: 0.5px;
}

.md-body-medium {
    font-size: 0.875rem;
    font-weight: 400;
    line-height: 1.43;
    letter-spacing: 0.25px;
}

.md-body-small {
    font-size: 0.75rem;
    font-weight: 400;
    line-height: 1.33;
    letter-spacing: 0.4px;
}

.md-label-large {
    font-size: 0.875rem;
    font-weight: 500;
    line-height: 1.43;
    letter-spacing: 0.1px;
}

.md-label-medium {
    font-size: 0.75rem;
    font-weight: 500;
    line-height: 1.33;
    letter-spacing: 0.5px;
}

.md-label-small {
    font-size: 0.6875rem;
    font-weight: 500;
    line-height: 1.45;
    letter-spacing: 0.5px;
}

/* Text Colors */
.md-text-primary { color: var(--md-text-primary); }
.md-text-secondary { color: var(--md-text-secondary); }
.md-text-disabled { color: var(--md-text-disabled); }
.md-text-error { color: var(--md-error); }
.md-text-success { color: var(--md-success); }
.md-text-accent { color: var(--md-accent-dark); }

/* ========================================
   Layout
   ======================================== */
.md-container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--md-spacing-md);
}

.md-container-fluid {
    width: 100%;
    padding: 0 var(--md-spacing-md);
}

.md-row {
    display: flex;
    flex-wrap: wrap;
    margin: 0 calc(var(--md-spacing-md) * -0.5);
}

.md-col {
    flex: 1;
    padding: 0 calc(var(--md-spacing-md) * 0.5);
}

.md-col-auto { flex: 0 0 auto; }
.md-col-1 { flex: 0 0 8.333%; max-width: 8.333%; }
.md-col-2 { flex: 0 0 16.667%; max-width: 16.667%; }
.md-col-3 { flex: 0 0 25%; max-width: 25%; }
.md-col-4 { flex: 0 0 33.333%; max-width: 33.333%; }
.md-col-5 { flex: 0 0 41.667%; max-width: 41.667%; }
.md-col-6 { flex: 0 0 50%; max-width: 50%; }
.md-col-7 { flex: 0 0 58.333%; max-width: 58.333%; }
.md-col-8 { flex: 0 0 66.667%; max-width: 66.667%; }
.md-col-9 { flex: 0 0 75%; max-width: 75%; }
.md-col-10 { flex: 0 0 83.333%; max-width: 83.333%; }
.md-col-11 { flex: 0 0 91.667%; max-width: 91.667%; }
.md-col-12 { flex: 0 0 100%; max-width: 100%; }

/* Flexbox utilities */
.md-flex { display: flex; }
.md-flex-column { flex-direction: column; }
.md-flex-wrap { flex-wrap: wrap; }
.md-justify-start { justify-content: flex-start; }
.md-justify-center { justify-content: center; }
.md-justify-end { justify-content: flex-end; }
.md-justify-between { justify-content: space-between; }
.md-justify-around { justify-content: space-around; }
.md-align-start { align-items: flex-start; }
.md-align-center { align-items: center; }
.md-align-end { align-items: flex-end; }
.md-align-stretch { align-items: stretch; }
.md-flex-1 { flex: 1; }
.md-gap-sm { gap: var(--md-spacing-sm); }
.md-gap-md { gap: var(--md-spacing-md); }
.md-gap-lg { gap: var(--md-spacing-lg); }

/* ========================================
   App Bar / Header
   ======================================== */
.md-appbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: 56px;
    background-color: var(--tg-theme-header-bg-color, var(--md-primary));
    color: var(--tg-theme-button-text-color, var(--md-on-primary));
    display: flex;
    align-items: center;
    padding: 0 var(--md-spacing-md);
    box-shadow: var(--md-shadow-2);
    z-index: var(--md-z-appbar);
    transition: background-color 0.2s ease, color 0.2s ease;
}

/* In Telegram - hide our header since Telegram has its own */
.in-telegram .md-appbar {
    display: none;
}

/* Adjust content when in Telegram (no app header) */
.in-telegram .app-content {
    padding-top: 0 !important;
    margin-top: 0 !important;
}

.md-appbar-title {
    font-size: 1.25rem;
    font-weight: 500;
    flex: 1;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.md-appbar-action {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: none;
    border: none;
    color: inherit;
    cursor: pointer;
    border-radius: var(--md-radius-full);
    transition: background-color var(--md-transition-fast);
}

.md-appbar-action:hover {
    background-color: rgba(255, 255, 255, 0.1);
}

/* ========================================
   Bottom Navigation
   ======================================== */
.md-bottom-nav {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    height: 56px;
    background-color: var(--tg-theme-bg-color, var(--md-surface));
    display: flex;
    box-shadow: 0 -1px 0 var(--tg-theme-hint-color, rgba(0,0,0,0.1));
    z-index: var(--md-z-appbar);
    transition: background-color 0.2s ease;
}

/* Telegram bottom nav adjustments */
.in-telegram .md-bottom-nav {
    background-color: var(--tg-theme-section-bg-color, var(--tg-theme-bg-color));
    box-shadow: 0 -1px 0 rgba(0,0,0,0.06);
    padding-bottom: var(--tg-safe-area-bottom, 0);
    height: calc(56px + var(--tg-safe-area-bottom, 0px));
}

.md-bottom-nav-item {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: var(--md-spacing-xs) 0;
    color: var(--tg-theme-hint-color, var(--md-text-secondary));
    text-decoration: none;
    transition: color var(--md-transition-fast);
    cursor: pointer;
    background: none;
    border: none;
}

.md-bottom-nav-item.active {
    color: var(--tg-theme-button-color, var(--md-primary));
}

.md-bottom-nav-item:hover {
    color: var(--tg-theme-button-color, var(--md-primary));
}

.md-bottom-nav-icon {
    font-size: 1.5rem;
    margin-bottom: 2px;
}

.md-bottom-nav-label {
    font-size: 0.75rem;
    font-weight: 500;
}

/* ========================================
   Cards
   ======================================== */
.md-card {
    background-color: var(--md-surface);
    border-radius: var(--md-radius-md);
    box-shadow: var(--md-shadow-1);
    overflow: hidden;
    transition: box-shadow var(--md-transition-fast);
}

.md-card:hover {
    box-shadow: var(--md-shadow-2);
}

.md-card-media {
    position: relative;
    width: 100%;
    padding-top: 56.25%; /* 16:9 aspect ratio */
    background-color: var(--md-surface-variant);
    overflow: hidden;
}

.md-card-media img {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.md-card-content {
    padding: var(--md-spacing-md);
}

.md-card-title {
    font-size: 1.25rem;
    font-weight: 500;
    color: var(--md-text-primary);
    margin-bottom: var(--md-spacing-xs);
}

.md-card-subtitle {
    font-size: 0.875rem;
    color: var(--md-text-secondary);
    margin-bottom: var(--md-spacing-sm);
}

.md-card-text {
    font-size: 0.875rem;
    color: var(--md-text-secondary);
    line-height: 1.5;
}

.md-card-actions {
    display: flex;
    align-items: center;
    padding: var(--md-spacing-sm) var(--md-spacing-md);
    gap: var(--md-spacing-sm);
}

/* Horizontal Card */
.md-card-horizontal {
    display: flex;
    flex-direction: row;
}

.md-card-horizontal .md-card-media {
    width: 100px;
    min-width: 100px;
    padding-top: 0;
    height: 100px;
}

.md-card-horizontal .md-card-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

/* ========================================
   Buttons
   ======================================== */
.md-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 64px;
    height: 40px;
    padding: 0 var(--md-spacing-md);
    font-size: 0.875rem;
    font-weight: 500;
    letter-spacing: 0.5px;
    text-transform: uppercase;
    border: none;
    border-radius: var(--md-radius-sm);
    cursor: pointer;
    transition: all var(--md-transition-fast);
    text-decoration: none;
    white-space: nowrap;
    user-select: none;
    -webkit-tap-highlight-color: transparent;
}

.md-btn:disabled {
    opacity: 0.38;
    cursor: not-allowed;
}

/* Filled Button */
.md-btn-filled {
    background-color: var(--md-primary);
    color: var(--md-on-primary);
}

.md-btn-filled:hover:not(:disabled) {
    background-color: var(--md-primary-dark);
    box-shadow: var(--md-shadow-1);
}

.md-btn-filled:active:not(:disabled) {
    background-color: var(--md-primary-dark);
}

/* Outlined Button */
.md-btn-outlined {
    background-color: transparent;
    color: var(--md-primary);
    border: 1px solid var(--md-primary);
}

.md-btn-outlined:hover:not(:disabled) {
    background-color: var(--md-primary-50);
}

/* Text Button */
.md-btn-text {
    background-color: transparent;
    color: var(--md-primary);
    min-width: auto;
    padding: 0 var(--md-spacing-sm);
}

.md-btn-text:hover:not(:disabled) {
    background-color: var(--md-primary-50);
}

/* Icon Button */
.md-btn-icon {
    width: 48px;
    height: 48px;
    min-width: 48px;
    padding: 0;
    border-radius: var(--md-radius-full);
    background-color: transparent;
    color: var(--md-text-primary);
}

.md-btn-icon:hover:not(:disabled) {
    background-color: rgba(0, 0, 0, 0.08);
}

/* FAB */
.md-fab {
    width: 56px;
    height: 56px;
    border-radius: var(--md-radius-lg);
    background-color: var(--md-accent);
    color: var(--md-on-secondary);
    box-shadow: var(--md-shadow-3);
    border: none;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--md-transition-fast);
}

.md-fab:hover {
    box-shadow: var(--md-shadow-4);
    background-color: var(--md-accent-dark);
}

.md-fab-extended {
    width: auto;
    padding: 0 var(--md-spacing-md);
    border-radius: var(--md-radius-lg);
}

.md-fab-mini {
    width: 40px;
    height: 40px;
}

/* Button sizes */
.md-btn-sm {
    height: 32px;
    padding: 0 var(--md-spacing-sm);
    font-size: 0.8125rem;
}

.md-btn-lg {
    height: 48px;
    padding: 0 var(--md-spacing-lg);
    font-size: 1rem;
}

/* ========================================
   Lists
   ======================================== */
.md-list {
    list-style: none;
    padding: var(--md-spacing-sm) 0;
    background-color: var(--md-surface);
}

.md-list-item {
    display: flex;
    align-items: center;
    min-height: 48px;
    padding: var(--md-spacing-sm) var(--md-spacing-md);
    cursor: pointer;
    transition: background-color var(--md-transition-fast);
}

.md-list-item:hover {
    background-color: rgba(0, 0, 0, 0.04);
}

.md-list-item.active {
    background-color: var(--md-primary-50);
}

.md-list-item-icon {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-right: var(--md-spacing-md);
    color: var(--md-text-secondary);
}

.md-list-item-avatar {
    width: 40px;
    height: 40px;
    border-radius: var(--md-radius-full);
    margin-right: var(--md-spacing-md);
    background-color: var(--md-primary);
    color: var(--md-on-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 500;
    overflow: hidden;
}

.md-list-item-avatar img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.md-list-item-content {
    flex: 1;
    min-width: 0;
}

.md-list-item-title {
    font-size: 1rem;
    color: var(--md-text-primary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.md-list-item-subtitle {
    font-size: 0.875rem;
    color: var(--md-text-secondary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.md-list-item-action {
    display: flex;
    align-items: center;
    margin-left: var(--md-spacing-md);
}

.md-list-divider {
    height: 1px;
    background-color: var(--md-divider);
    margin: 0 var(--md-spacing-md);
}

/* Unverified item (red highlight) */
.md-list-item.unverified .md-list-item-title {
    color: var(--md-error);
}

/* ========================================
   Chips
   ======================================== */
.md-chip {
    display: inline-flex;
    align-items: center;
    height: 32px;
    padding: 0 var(--md-spacing-sm);
    font-size: 0.875rem;
    border-radius: var(--md-radius-full);
    background-color: var(--md-surface-variant);
    color: var(--md-text-primary);
    cursor: pointer;
    transition: all var(--md-transition-fast);
    border: none;
}

.md-chip:hover {
    background-color: var(--md-divider);
}

.md-chip.active {
    background-color: var(--md-primary);
    color: var(--md-on-primary);
}

.md-chip-icon {
    margin-right: var(--md-spacing-xs);
}

.md-chips {
    display: flex;
    flex-wrap: wrap;
    gap: var(--md-spacing-sm);
}

/* ========================================
   Form Elements
   ======================================== */
.md-form-group {
    margin-bottom: var(--md-spacing-md);
}

.md-label {
    display: block;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--md-text-secondary);
    margin-bottom: var(--md-spacing-xs);
}

.md-input {
    width: 100%;
    height: 48px;
    padding: 0 var(--md-spacing-md);
    font-size: 1rem;
    border: 1px solid var(--md-border);
    border-radius: var(--md-radius-sm);
    background-color: var(--md-surface);
    color: var(--md-text-primary);
    transition: border-color var(--md-transition-fast), box-shadow var(--md-transition-fast);
}

.md-input:focus {
    outline: none;
    border-color: var(--md-primary);
    box-shadow: 0 0 0 1px var(--md-primary);
}

.md-input:disabled {
    background-color: var(--md-surface-variant);
    color: var(--md-text-disabled);
}

.md-input.error {
    border-color: var(--md-error);
}

.md-input.error:focus {
    box-shadow: 0 0 0 1px var(--md-error);
}

.md-textarea {
    min-height: 120px;
    padding: var(--md-spacing-md);
    resize: vertical;
}

.md-select {
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='24' height='24' viewBox='0 0 24 24'%3E%3Cpath fill='%23757575' d='M7 10l5 5 5-5z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 12px center;
    padding-right: 40px;
}

.md-error-text {
    font-size: 0.75rem;
    color: var(--md-error);
    margin-top: var(--md-spacing-xs);
}

.md-helper-text {
    font-size: 0.75rem;
    color: var(--md-text-hint);
    margin-top: var(--md-spacing-xs);
}

/* Checkbox */
.md-checkbox {
    display: inline-flex;
    align-items: center;
    cursor: pointer;
    user-select: none;
}

.md-checkbox input {
    width: 18px;
    height: 18px;
    margin-right: var(--md-spacing-sm);
    accent-color: var(--md-primary);
}

/* Switch */
.md-switch {
    position: relative;
    display: inline-flex;
    align-items: center;
    cursor: pointer;
}

.md-switch input {
    opacity: 0;
    width: 0;
    height: 0;
}

.md-switch-track {
    width: 36px;
    height: 14px;
    background-color: var(--md-text-disabled);
    border-radius: 7px;
    transition: background-color var(--md-transition-fast);
}

.md-switch-thumb {
    position: absolute;
    left: 0;
    width: 20px;
    height: 20px;
    background-color: var(--md-surface);
    border-radius: var(--md-radius-full);
    box-shadow: var(--md-shadow-1);
    transition: transform var(--md-transition-fast), background-color var(--md-transition-fast);
}

.md-switch input:checked + .md-switch-track {
    background-color: var(--md-primary-200);
}

.md-switch input:checked ~ .md-switch-thumb {
    transform: translateX(16px);
    background-color: var(--md-primary);
}

/* ========================================
   Dialog / Modal
   ======================================== */
.md-dialog-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(0, 0, 0, 0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: var(--md-z-modal);
    opacity: 0;
    visibility: hidden;
    transition: opacity var(--md-transition-normal), visibility var(--md-transition-normal);
}

.md-dialog-overlay.open {
    opacity: 1;
    visibility: visible;
}

.md-dialog {
    width: 90%;
    max-width: 560px;
    max-height: 90vh;
    background-color: var(--md-surface);
    border-radius: var(--md-radius-lg);
    box-shadow: var(--md-shadow-5);
    overflow: hidden;
    transform: scale(0.9);
    transition: transform var(--md-transition-normal);
}

.md-dialog-overlay.open .md-dialog {
    transform: scale(1);
}

.md-dialog-header {
    padding: var(--md-spacing-lg);
    padding-bottom: var(--md-spacing-md);
}

.md-dialog-title {
    font-size: 1.5rem;
    font-weight: 500;
    color: var(--md-text-primary);
}

.md-dialog-content {
    padding: 0 var(--md-spacing-lg);
    max-height: 60vh;
    overflow-y: auto;
}

.md-dialog-actions {
    display: flex;
    justify-content: flex-end;
    gap: var(--md-spacing-sm);
    padding: var(--md-spacing-md) var(--md-spacing-lg);
}

/* ========================================
   Snackbar
   ======================================== */
.md-snackbar {
    position: fixed;
    bottom: calc(72px + var(--tg-safe-area-bottom, 0px));
    left: 50%;
    transform: translateX(-50%) translateY(100px);
    min-width: 288px;
    max-width: calc(100vw - 32px);
    max-width: min(568px, calc(100vw - 32px));
    padding: var(--md-spacing-md);
    background-color: #323232;
    color: #fff;
    border-radius: var(--md-radius-sm);
    box-shadow: var(--md-shadow-3);
    z-index: var(--md-z-snackbar);
    opacity: 0;
    transition: transform var(--md-transition-normal), opacity var(--md-transition-normal);
}

/* In Telegram - adjust for bottom nav */
.in-telegram .md-snackbar {
    bottom: calc(70px + var(--tg-safe-area-bottom, 0px));
    background-color: var(--tg-theme-text-color, #323232);
    color: var(--tg-theme-bg-color, #fff);
}

.md-snackbar.show {
    transform: translateX(-50%) translateY(0);
    opacity: 1;
}

.md-snackbar-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--md-spacing-md);
}

.md-snackbar-action {
    color: var(--tg-theme-button-color, var(--md-accent));
    font-weight: 500;
    text-transform: uppercase;
    cursor: pointer;
    background: none;
    border: none;
    font-size: 0.875rem;
}

/* ========================================
   Progress Indicators
   ======================================== */
.md-progress {
    height: 4px;
    background-color: var(--md-primary-100);
    border-radius: 2px;
    overflow: hidden;
}

.md-progress-bar {
    height: 100%;
    background-color: var(--md-primary);
    border-radius: 2px;
    transition: width var(--md-transition-normal);
}

.md-progress-indeterminate .md-progress-bar {
    width: 30%;
    animation: md-progress-indeterminate 1.5s infinite;
}

@keyframes md-progress-indeterminate {
    0% { transform: translateX(-100%); }
    100% { transform: translateX(400%); }
}

.md-spinner {
    width: 48px;
    height: 48px;
    border: 4px solid var(--md-primary-100);
    border-top-color: var(--md-primary);
    border-radius: var(--md-radius-full);
    animation: md-spin 1s linear infinite;
}

@keyframes md-spin {
    to { transform: rotate(360deg); }
}

/* ========================================
   Mini Player
   ======================================== */
.md-mini-player {
    position: fixed;
    bottom: calc(60px + var(--tg-safe-area-bottom, 0px));
    left: 8px;
    right: 8px;
    background: linear-gradient(135deg, #1a1a2e 0%, #16213e 100%);
    box-shadow: 0 -4px 30px rgba(0, 0, 0, 0.3), 0 0 60px rgba(102, 126, 234, 0.2);
    z-index: var(--md-z-appbar);
    transform: translateY(150%);
    transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    border-radius: 20px;
    border: 1px solid rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
}

/* Telegram adjustments */
.in-telegram .md-mini-player {
    bottom: calc(60px + var(--tg-safe-area-bottom, 0px));
    left: 6px;
    right: 6px;
    border-radius: 16px;
}

.md-mini-player.active {
    transform: translateY(0);
}

.md-mini-player-content {
    display: flex;
    align-items: center;
    padding: var(--md-spacing-sm) var(--md-spacing-md);
    gap: var(--md-spacing-md);
}

.md-mini-player-thumb {
    flex-shrink: 0;
    width: 52px;
    height: 52px;
    background: linear-gradient(135deg, #7C3AED 0%, #A78BFA 100%);
    border-radius: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 15px rgba(124, 58, 237, 0.4);
    animation: pulse-thumb 2s infinite;
}

@keyframes pulse-thumb {
    0%, 100% { box-shadow: 0 4px 15px rgba(124, 58, 237, 0.4); }
    50% { box-shadow: 0 4px 25px rgba(124, 58, 237, 0.6); }
}

.md-mini-player-thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: var(--md-radius-md);
}

.md-mini-player-thumb .material-icons {
    font-size: 28px;
    color: white;
}

.md-mini-player-main {
    flex: 1;
    min-width: 0;
    display: flex;
    flex-direction: column;
    gap: var(--md-spacing-xs);
}

.md-mini-player-info {
    display: flex;
    flex-direction: column;
    gap: 2px;
    min-width: 0;
}

.md-mini-player-title {
    font-size: 0.95rem;
    font-weight: 600;
    color: #ffffff;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    line-height: 1.2;
}

.md-mini-player-artist {
    font-size: 0.8rem;
    color: rgba(255, 255, 255, 0.6);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    line-height: 1.2;
}

.md-mini-player-progress-section {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.md-mini-player-time {
    display: flex;
    align-items: center;
    gap: 4px;
    font-size: 0.75rem;
    color: rgba(255, 255, 255, 0.5);
    font-weight: 500;
}

.md-mini-player-current-time {
    color: #A78BFA;
    font-weight: 600;
    min-width: 35px;
}

.md-mini-player-separator {
    opacity: 0.5;
}

.md-mini-player-total-time {
    min-width: 35px;
}

.md-mini-player-progress-bar {
    width: 100%;
    height: 5px;
    background-color: rgba(255, 255, 255, 0.2);
    border-radius: 3px;
    position: relative;
    cursor: pointer;
    transition: height 0.2s;
    overflow: hidden;
}

.md-mini-player-progress-bar:hover {
    height: 7px;
}

.md-mini-player-progress-filled {
    height: 100%;
    background: linear-gradient(90deg, #7C3AED 0%, #A78BFA 100%);
    border-radius: 3px;
    transition: width 0.1s linear;
    position: relative;
    box-shadow: 0 0 10px rgba(124, 58, 237, 0.5);
}

.md-mini-player-progress-handle {
    position: absolute;
    top: 50%;
    right: 0;
    transform: translate(50%, -50%);
    width: 14px;
    height: 14px;
    background: linear-gradient(135deg, #7C3AED 0%, #A78BFA 100%);
    border: 2px solid white;
    border-radius: 50%;
    box-shadow: 0 2px 8px rgba(124, 58, 237, 0.5);
    opacity: 0;
    transition: opacity 0.2s, transform 0.2s;
}

.md-mini-player-progress-bar:hover .md-mini-player-progress-handle {
    opacity: 1;
    transform: translate(50%, -50%) scale(1.1);
}

.md-mini-player-controls {
    display: flex;
    align-items: center;
    gap: 4px;
    flex-shrink: 0;
}

.md-mini-player-controls .md-btn-icon {
    width: 44px;
    height: 44px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    color: white;
    transition: all 0.2s ease;
    border: none;
}

.md-mini-player-controls .md-btn-icon:hover {
    background: rgba(255, 255, 255, 0.2);
    transform: scale(1.05);
}

.md-mini-player-controls .md-btn-icon:active {
    transform: scale(0.95);
}

/* Play button special style */
.md-mini-player-controls .md-btn-icon#mini-player-play {
    width: 52px;
    height: 52px;
    background: linear-gradient(135deg, #7C3AED 0%, #A78BFA 100%);
    box-shadow: 0 4px 15px rgba(124, 58, 237, 0.4);
}

.md-mini-player-controls .md-btn-icon#mini-player-play:hover {
    box-shadow: 0 6px 20px rgba(124, 58, 237, 0.6);
}

/* ========================================
   Empty State
   ======================================== */
.md-empty-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: var(--md-spacing-xxl);
    text-align: center;
}

.md-empty-state-icon {
    font-size: 4rem;
    color: var(--md-text-disabled);
    margin-bottom: var(--md-spacing-md);
}

.md-empty-state-title {
    font-size: 1.25rem;
    font-weight: 500;
    color: var(--md-text-primary);
    margin-bottom: var(--md-spacing-sm);
}

.md-empty-state-text {
    font-size: 0.875rem;
    color: var(--md-text-secondary);
    max-width: 300px;
}

/* ========================================
   Badge
   ======================================== */
.md-badge {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 20px;
    height: 20px;
    padding: 0 6px;
    font-size: 0.75rem;
    font-weight: 500;
    background-color: var(--md-error);
    color: #fff;
    border-radius: 10px;
}

.md-badge-dot {
    width: 8px;
    height: 8px;
    min-width: 8px;
    padding: 0;
}

/* ========================================
   Divider
   ======================================== */
.md-divider {
    height: 1px;
    background-color: var(--md-divider);
    margin: var(--md-spacing-md) 0;
}

.md-divider-vertical {
    width: 1px;
    height: 100%;
    background-color: var(--md-divider);
    margin: 0 var(--md-spacing-md);
}

/* ========================================
   Skeleton Loading
   ======================================== */
.md-skeleton {
    background: linear-gradient(90deg, var(--md-surface-variant) 25%, var(--md-divider) 50%, var(--md-surface-variant) 75%);
    background-size: 200% 100%;
    animation: md-skeleton-loading 1.5s infinite;
    border-radius: var(--md-radius-sm);
}

.md-skeleton-text {
    height: 1rem;
    margin-bottom: var(--md-spacing-sm);
}

.md-skeleton-title {
    height: 1.5rem;
    width: 60%;
    margin-bottom: var(--md-spacing-sm);
}

.md-skeleton-avatar {
    width: 40px;
    height: 40px;
    border-radius: var(--md-radius-full);
}

.md-skeleton-image {
    width: 100%;
    padding-top: 56.25%;
}

@keyframes md-skeleton-loading {
    0% { background-position: 200% 0; }
    100% { background-position: -200% 0; }
}

/* ========================================
   Utilities
   ======================================== */
/* Spacing */
.md-m-0 { margin: 0; }
.md-mt-sm { margin-top: var(--md-spacing-sm); }
.md-mt-md { margin-top: var(--md-spacing-md); }
.md-mt-lg { margin-top: var(--md-spacing-lg); }
.md-mb-sm { margin-bottom: var(--md-spacing-sm); }
.md-mb-md { margin-bottom: var(--md-spacing-md); }
.md-mb-lg { margin-bottom: var(--md-spacing-lg); }
.md-my-sm { margin-top: var(--md-spacing-sm); margin-bottom: var(--md-spacing-sm); }
.md-my-md { margin-top: var(--md-spacing-md); margin-bottom: var(--md-spacing-md); }
.md-my-lg { margin-top: var(--md-spacing-lg); margin-bottom: var(--md-spacing-lg); }

.md-p-0 { padding: 0; }
.md-p-sm { padding: var(--md-spacing-sm); }
.md-p-md { padding: var(--md-spacing-md); }
.md-p-lg { padding: var(--md-spacing-lg); }
.md-px-md { padding-left: var(--md-spacing-md); padding-right: var(--md-spacing-md); }
.md-py-md { padding-top: var(--md-spacing-md); padding-bottom: var(--md-spacing-md); }

/* Display */
.md-hidden { display: none; }
.md-block { display: block; }
.md-inline { display: inline; }
.md-inline-block { display: inline-block; }

/* Text */
.md-text-center { text-align: center; }
.md-text-left { text-align: left; }
.md-text-right { text-align: right; }
.md-text-truncate {
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

/* Width */
.md-w-full { width: 100%; }
.md-w-auto { width: auto; }

/* Cursor */
.md-cursor-pointer { cursor: pointer; }

/* ========================================
   Responsive
   ======================================== */
@media (max-width: 600px) {
    .md-col-sm-12 { flex: 0 0 100%; max-width: 100%; }
    .md-hidden-sm { display: none; }
    
    .md-container {
        padding: 0 var(--md-spacing-sm);
    }
}

@media (min-width: 601px) and (max-width: 960px) {
    .md-col-md-6 { flex: 0 0 50%; max-width: 50%; }
    .md-col-md-12 { flex: 0 0 100%; max-width: 100%; }
    .md-hidden-md { display: none; }
}

@media (min-width: 961px) {
    .md-hidden-lg { display: none; }
}

/* Safe area for mobile */
@supports (padding-bottom: env(safe-area-inset-bottom)) {
    .md-bottom-nav {
        padding-bottom: env(safe-area-inset-bottom);
        height: calc(56px + env(safe-area-inset-bottom));
    }
    
    .md-mini-player {
        bottom: calc(56px + env(safe-area-inset-bottom));
    }
}