/* Rehan Archive Downloader v15 - Enhanced Responsive Design with Per-Pack Customization */

/* ============================================
   CORE CONTAINER & BASE STYLES
   ============================================ */

.rehan-archive-downloader {
    max-width: 900px;
    margin: 0 auto;
    font-family: var(--rad-font-family, inherit);
    background: transparent;
    color: inherit;
    opacity: 0;
    animation: fadeIn 0.6s ease forwards;
    padding: clamp(1rem, 3vw, 2rem);
}

@keyframes fadeIn {
    to { opacity: 1; }
}

/* ============================================
   PER-PACK COLOR SCHEMES
   Each pack gets unique colors for visual distinction
   ============================================ */

.rehan-archive-downloader[data-pack="0"] {
    --pack-primary: #667eea;
    --pack-secondary: #5a6fd8;
    --pack-accent: #764ba2;
    --pack-light: rgba(102, 126, 234, 0.08);
    --pack-border: rgba(102, 126, 234, 0.25);
}

.rehan-archive-downloader[data-pack="1"] {
    --pack-primary: #f093fb;
    --pack-secondary: #d76ce0;
    --pack-accent: #f5576c;
    --pack-light: rgba(240, 147, 251, 0.08);
    --pack-border: rgba(240, 147, 251, 0.25);
}

.rehan-archive-downloader[data-pack="2"] {
    --pack-primary: #4facfe;
    --pack-secondary: #3d8fd1;
    --pack-accent: #00f2fe;
    --pack-light: rgba(79, 172, 254, 0.08);
    --pack-border: rgba(79, 172, 254, 0.25);
}

.rehan-archive-downloader[data-pack="3"] {
    --pack-primary: #43e97b;
    --pack-secondary: #38c172;
    --pack-accent: #38f9d7;
    --pack-light: rgba(67, 233, 123, 0.08);
    --pack-border: rgba(67, 233, 123, 0.25);
}

.rehan-archive-downloader[data-pack="4"] {
    --pack-primary: #fa709a;
    --pack-secondary: #d85a7f;
    --pack-accent: #fee140;
    --pack-light: rgba(250, 112, 154, 0.08);
    --pack-border: rgba(250, 112, 154, 0.25);
}

.rehan-archive-downloader[data-pack="5"] {
    --pack-primary: #fccb90;
    --pack-secondary: #d9a066;
    --pack-accent: #d57eeb;
    --pack-light: rgba(252, 203, 144, 0.08);
    --pack-border: rgba(252, 203, 144, 0.25);
}

/* Default for packs 6+ */
.rehan-archive-downloader:not([data-pack="0"]):not([data-pack="1"]):not([data-pack="2"]):not([data-pack="3"]):not([data-pack="4"]):not([data-pack="5"]) {
    --pack-primary: #667eea;
    --pack-secondary: #5a6fd8;
    --pack-accent: #764ba2;
    --pack-light: rgba(102, 126, 234, 0.08);
    --pack-border: rgba(102, 126, 234, 0.25);
}

/* ============================================
   PACK NAME HEADER
   ============================================ */

.rad-pack-name {
    margin-bottom: clamp(1.5rem, 4vw, 2.5rem);
    padding: clamp(1.25rem, 3vw, 2rem);
    background: linear-gradient(135deg, var(--pack-light) 0%, transparent 100%);
    border-radius: clamp(0.75rem, 2vw, 1.25rem);
    border-left: 4px solid var(--pack-primary);
    position: relative;
    overflow: hidden;
}

.rad-pack-name::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -10%;
    width: 200px;
    height: 200px;
    background: radial-gradient(circle, var(--pack-primary) 0%, transparent 70%);
    opacity: 0.05;
    border-radius: 50%;
}

.rad-pack-name h2 {
    margin: 0;
    font-size: clamp(1.5rem, 4vw, 2.25rem);
    font-weight: 700;
    text-align: center;
    color: var(--pack-primary);
    line-height: 1.2;
    letter-spacing: -0.02em;
    position: relative;
    z-index: 1;
}

/* ============================================
   YEAR SELECTOR
   ============================================ */

.rad-year-selector {
    margin-bottom: clamp(1.5rem, 3vw, 2.5rem);
    text-align: center;
    padding: clamp(1.25rem, 3vw, 2rem);
    background: var(--pack-light);
    border-radius: clamp(0.625rem, 2vw, 1rem);
    border: 1px solid var(--pack-border);
}

.rad-year-selector label {
    font-weight: 600;
    margin-right: 1rem;
    font-size: clamp(1rem, 2.5vw, 1.125rem);
    color: var(--pack-primary);
    display: inline-block;
    margin-bottom: 0.75rem;
    transition: color 0.3s ease;
}

/* Enhanced Dropdown with Better Mobile Support */
.rad-year-dropdown {
    padding: clamp(0.75rem, 2vw, 1rem) clamp(1rem, 2.5vw, 1.5rem);
    border: 2px solid var(--pack-border);
    border-radius: 0.5rem;
    font-size: clamp(0.9375rem, 2vw, 1.0625rem);
    min-width: min(180px, 100%);
    max-width: 100%;
    background: var(--input-bg, #ffffff);
    color: inherit;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    cursor: pointer;
    font-weight: 500;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%23667eea' d='M6 9L1 4h10z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 1rem center;
    padding-right: 3rem;
}

.rad-year-dropdown:focus {
    border-color: var(--pack-primary);
    outline: none;
    box-shadow: 0 0 0 3px var(--pack-light), 0 4px 12px rgba(0, 0, 0, 0.15);
    transform: translateY(-1px);
}

.rad-year-dropdown:hover {
    border-color: var(--pack-primary);
}

/* ============================================
   FILES CONTAINER
   ============================================ */

.rad-files-container {
    min-height: 100px;
    transition: all 0.4s ease;
}

/* ============================================
   YEAR FILES SECTION
   ============================================ */

.rad-year-files {
    background: var(--pack-light);
    border-radius: clamp(0.75rem, 2vw, 1.25rem);
    padding: clamp(1.5rem, 3vw, 2.5rem);
    margin-top: clamp(1.25rem, 3vw, 2rem);
    color: inherit;
    border: 1px solid var(--pack-border);
    animation: slideUp 0.5s ease;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.05);
}

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.rad-year-files h3 {
    font-size: clamp(1.375rem, 3.5vw, 1.875rem);
    margin-bottom: clamp(1.5rem, 3vw, 2.5rem);
    font-weight: 600;
    text-align: center;
    color: var(--pack-primary);
    padding-bottom: 1rem;
    background: transparent;
    position: relative;
}

.rad-year-files h3::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: clamp(50px, 10vw, 80px);
    height: 3px;
    background: linear-gradient(90deg, transparent, var(--pack-primary), transparent);
    border-radius: 2px;
}

/* ============================================
   MONTHS LIST
   ============================================ */

.rad-months-list {
    margin-bottom: clamp(1.5rem, 3vw, 2.5rem);
}

/* ============================================
   MONTH ITEMS - Enhanced Responsive Design
   ============================================ */

.rad-month-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: clamp(1rem, 2.5vw, 1.5rem);
    margin-bottom: clamp(0.75rem, 2vw, 1rem);
    border-radius: clamp(0.5rem, 1.5vw, 0.75rem);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    background: rgba(255, 255, 255, 0.6);
    border: 1px solid var(--pack-border);
    position: relative;
    overflow: hidden;
    gap: clamp(0.75rem, 2vw, 1.25rem);
}

.rad-month-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--pack-light);
    opacity: 0;
    transition: opacity 0.3s ease;
    border-radius: inherit;
}

.rad-month-item:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.12);
    border-color: var(--pack-primary);
}

.rad-month-item:hover::before {
    opacity: 1;
}

.rad-month-name {
    font-weight: 500;
    font-size: clamp(0.9375rem, 2.2vw, 1.0625rem);
    color: inherit;
    background: transparent;
    position: relative;
    z-index: 1;
    flex: 1;
    min-width: 0;
    word-break: break-word;
}

.rad-month-actions {
    display: flex;
    gap: clamp(0.5rem, 1.5vw, 0.875rem);
    position: relative;
    z-index: 1;
    flex-shrink: 0;
    flex-wrap: wrap;
}

/* ============================================
   BUTTON STYLES - Enhanced & Responsive
   ============================================ */

.rad-read-online,
.rad-download-pdf,
.rad-download-zip,
.rad-download-all-zip {
    padding: clamp(0.75rem, 2vw, 1rem) clamp(1rem, 2.5vw, 1.75rem);
    text-decoration: none;
    border-radius: 0.5rem;
    font-size: clamp(0.875rem, 2vw, 1rem);
    font-weight: 600;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    border: 2px solid transparent;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    min-width: clamp(110px, 20vw, 140px);
    font-family: inherit;
    position: relative;
    overflow: hidden;
    background-color: var(--pack-primary) !important;
    color: #ffffff !important;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
    white-space: nowrap;
}

/* Button Hover Effects */
.rad-read-online:hover,
.rad-download-pdf:hover,
.rad-download-zip:hover,
.rad-download-all-zip:hover {
    transform: translateY(-2px) scale(1.02);
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.2);
    background-color: var(--pack-secondary) !important;
}

.rad-read-online:active,
.rad-download-pdf:active,
.rad-download-zip:active,
.rad-download-all-zip:active {
    transform: translateY(0) scale(0.98);
}

/* Button Focus States */
.rad-read-online:focus,
.rad-download-pdf:focus,
.rad-download-zip:focus,
.rad-download-all-zip:focus {
    outline: 3px solid var(--pack-light);
    outline-offset: 2px;
}

/* ============================================
   DOWNLOAD SECTIONS - Fixed Spacing
   ============================================ */

.rad-year-actions {
    text-align: center;
    margin-top: clamp(1.5rem, 3vw, 2.5rem);
    padding: clamp(1.25rem, 3vw, 2rem) 0 0 0;
    background: transparent;
    border-top: 2px solid var(--pack-border);
}

.rad-download-zip {
    padding: clamp(0.875rem, 2.2vw, 1.125rem) clamp(1.5rem, 3vw, 2.25rem);
    font-size: clamp(0.9375rem, 2.2vw, 1.0625rem);
    font-weight: 600;
    min-width: clamp(180px, 30vw, 240px);
}

.rad-download-all-container {
    text-align: center;
    margin: clamp(1.5rem, 3vw, 2.5rem) 0 clamp(0.75rem, 2vw, 1.25rem) 0;
    padding: clamp(1.25rem, 3vw, 2rem) 0 0 0;
    background: transparent;
    border-top: 2px solid var(--pack-border);
}

.rad-download-all-zip {
    padding: clamp(0.875rem, 2.2vw, 1.125rem) clamp(1.5rem, 3vw, 2.25rem);
    font-size: clamp(0.9375rem, 2.2vw, 1.0625rem);
    font-weight: 600;
    min-width: clamp(180px, 30vw, 240px);
}

.rad-button-group {
    display: flex;
    gap: clamp(0.75rem, 2vw, 1.25rem);
    justify-content: center;
    flex-wrap: wrap;
    margin: 0;
}

/* ============================================
   LOADING & ERROR STATES
   ============================================ */

.rad-loading {
    text-align: center;
    padding: clamp(2rem, 4vw, 3.5rem);
    font-style: normal;
    color: var(--pack-primary);
    font-size: clamp(1rem, 2.5vw, 1.25rem);
    background: var(--pack-light);
    border-radius: clamp(0.625rem, 2vw, 1rem);
    margin: clamp(1.5rem, 3vw, 2.5rem) 0;
    position: relative;
    border: 1px solid var(--pack-border);
}

.rad-loading::before {
    content: '';
    display: inline-block;
    width: clamp(35px, 6vw, 45px);
    height: clamp(35px, 6vw, 45px);
    border: 3px solid var(--pack-border);
    border-top: 3px solid var(--pack-primary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin-right: 1rem;
    vertical-align: middle;
}

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

.rad-error {
    text-align: center;
    padding: clamp(1.25rem, 3vw, 2rem);
    color: var(--error-color, #dc3232);
    background: var(--error-bg, rgba(220, 50, 50, 0.05));
    border-radius: clamp(0.625rem, 2vw, 1rem);
    margin: clamp(1.5rem, 3vw, 2.5rem) 0;
    border: 1px solid var(--error-border, rgba(220, 50, 50, 0.2));
    font-weight: 500;
    font-size: clamp(0.9375rem, 2vw, 1.0625rem);
}

/* ============================================
   RESPONSIVE BREAKPOINTS
   ============================================ */

/* Large Tablets & Desktops (769px+) */
@media (min-width: 769px) {
    .rad-month-item {
        padding: 1.5rem 2rem;
    }
    
    .rad-month-name {
        font-size: 1.125rem;
    }
    
    .rad-month-actions {
        gap: 1rem;
    }
    
    .rad-read-online,
    .rad-download-pdf {
        padding: 1rem 1.75rem;
        font-size: 1rem;
        min-width: 150px;
    }
}

/* Tablets (481px - 768px) */
@media (min-width: 481px) and (max-width: 768px) {
    .rad-month-item {
        padding: 1.25rem 1.5rem;
    }
    
    .rad-month-actions {
        gap: 0.75rem;
    }
    
    .rad-read-online,
    .rad-download-pdf {
        padding: 0.875rem 1.25rem;
        font-size: 0.9375rem;
        min-width: 120px;
    }
}

/* Mobile Devices (max 480px) */
@media (max-width: 480px) {
    .rehan-archive-downloader {
        padding: 1rem 0.5rem;
    }
    
    .rad-month-item {
        flex-direction: column;
        align-items: stretch;
        gap: 1rem;
        padding: 1.25rem 1rem;
    }
    
    .rad-month-name {
        text-align: center;
        margin-bottom: 0.5rem;
    }
    
    .rad-month-actions {
        width: 100%;
        justify-content: stretch;
        gap: 0.5rem;
    }
    
    .rad-read-online,
    .rad-download-pdf {
        flex: 1;
        text-align: center;
        min-width: auto;
        padding: 1rem 0.75rem;
        font-size: 0.875rem;
    }
    
    .rad-download-all-zip,
    .rad-download-zip {
        display: block;
        width: 100%;
        max-width: 320px;
        margin: 0 auto;
        padding: 1.125rem 1.5rem;
        font-size: 1rem;
    }
    
    .rad-year-selector {
        padding: 1.25rem 1rem;
    }
    
    .rad-year-files {
        padding: 1.5rem 1rem;
        margin: 1.25rem 0;
    }
    
    .rad-year-selector label {
        display: block;
        margin-bottom: 0.875rem;
        font-size: 1rem;
    }
    
    .rad-year-dropdown {
        width: 100%;
        max-width: 100%;
    }
    
    .rad-button-group {
        flex-direction: column;
        gap: 0.75rem;
    }
    
    .rad-pack-name {
        padding: 1.25rem 1rem;
    }
}

/* Extra Small Devices (max 360px) */
@media (max-width: 360px) {
    .rad-read-online,
    .rad-download-pdf {
        font-size: 0.8125rem;
        padding: 0.875rem 0.5rem;
    }
    
    .rad-month-item {
        padding: 1rem 0.75rem;
    }
}

/* ============================================
   THEME COMPATIBILITY & ACCESSIBILITY
   ============================================ */

/* Auto Color Detection */
.rehan-archive-downloader {
    --bg-brightness: light;
    --text-color: #333;
    --text-color-light: #666;
}

/* Dark Mode Support */
@media (prefers-color-scheme: dark) {
    .rehan-archive-downloader {
        --bg-brightness: dark;
        --text-color: #fff;
        --text-color-light: #ccc;
    }
    
    .rad-month-item {
        background: rgba(0, 0, 0, 0.3);
    }
    
    .rad-year-dropdown {
        background: rgba(0, 0, 0, 0.3);
        color: #fff;
    }
}

/* Automatic color adaptation based on computed background */
.rehan-archive-downloader[data-bg-brightness="dark"] {
    --text-color: #ffffff;
    --text-color-light: #cccccc;
    --border-color: #444444;
}

.rehan-archive-downloader[data-bg-brightness="dark"] .rad-month-item {
    background: rgba(0, 0, 0, 0.3);
}

.rehan-archive-downloader[data-bg-brightness="dark"] .rad-year-dropdown {
    background: rgba(0, 0, 0, 0.3);
    color: #fff;
}

.rehan-archive-downloader[data-bg-brightness="light"] {
    --text-color: #333333;
    --text-color-light: #666666;
    --border-color: #e1e5e9;
}

/* High Contrast Mode */
@media (prefers-contrast: high) {
    .rad-year-dropdown,
    .rad-read-online,
    .rad-download-pdf,
    .rad-download-zip,
    .rad-download-all-zip {
        border-width: 3px;
    }
}

/* Reduced Motion */
@media (prefers-reduced-motion: reduce) {
    .rehan-archive-downloader,
    .rad-year-files,
    .rad-month-item,
    .rad-read-online,
    .rad-download-pdf,
    .rad-download-zip,
    .rad-download-all-zip {
        animation: none;
        transition: none;
    }
}

/* ============================================
   PRINT STYLES
   ============================================ */

@media print {
    .rad-read-online,
    .rad-download-pdf,
    .rad-download-zip,
    .rad-download-all-zip,
    .rad-year-selector {
        display: none;
    }
    
    .rad-year-files {
        border: none;
        box-shadow: none;
        padding: 1rem 0;
    }
    
    .rad-month-item {
        border: 1px solid #ddd;
        margin-bottom: 0.5rem;
        padding: 0.75rem;
    }
    
    .rad-month-item:hover {
        transform: none;
        box-shadow: none;
    }
}

/* ============================================
   TOUCH DEVICE OPTIMIZATIONS
   ============================================ */

@media (hover: none) and (pointer: coarse) {
    .rad-read-online,
    .rad-download-pdf,
    .rad-download-zip,
    .rad-download-all-zip {
        min-height: 44px; /* iOS minimum touch target */
        padding: 1rem 1.5rem;
    }
    
    .rad-year-dropdown {
        min-height: 44px;
    }
    
    .rad-month-item:hover {
        transform: none;
    }
}