/**
 * Nepali Date Picker CSS - Premium Edition
 * Author: Om Pandey
 * Version: 2.3.0
 * Website: https://www.omkumarpandey.com.np/
 */

@import url('https://fonts.googleapis.com/css2?family=Noto+Sans+Devanagari:wght@400;500;600;700;800;900&display=swap');
@import url('https://fonts.googleapis.com/css2?family=Plus+Jakarta+Sans:wght@400;500;600;700;800&display=swap');

/* ============================================
   CSS Variables
   ============================================ */
:root {
    --ndp-font-nepali: 'Noto Sans Devanagari', sans-serif;
    --ndp-font-english: 'Plus Jakarta Sans', sans-serif;
    
    --ndp-bg-primary: #ffffff;
    --ndp-bg-secondary: #f8fafc;
    --ndp-bg-tertiary: #f1f5f9;
    
    --ndp-text-primary: #0f172a;
    --ndp-text-secondary: #475569;
    --ndp-text-tertiary: #94a3b8;
    
    --ndp-border-light: rgba(0, 0, 0, 0.06);
    --ndp-border-medium: rgba(0, 0, 0, 0.1);
    
    --ndp-accent-start: #8b5cf6;
    --ndp-accent-end: #ec4899;
    --ndp-accent-gradient: linear-gradient(135deg, #8b5cf6 0%, #ec4899 100%);
    --ndp-accent-gradient-hover: linear-gradient(135deg, #7c3aed 0%, #db2777 100%);
    
    --ndp-sunday: #ef4444;
    --ndp-saturday: #3b82f6;
    --ndp-today: #f59e0b;
    
    --ndp-shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.08);
    --ndp-shadow-md: 0 4px 16px rgba(0, 0, 0, 0.12);
    --ndp-shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.16);
    --ndp-shadow-xl: 0 20px 50px rgba(0, 0, 0, 0.2);
    --ndp-shadow-glow: 0 0 40px rgba(139, 92, 246, 0.25);
    
    --ndp-radius-sm: 8px;
    --ndp-radius-md: 12px;
    --ndp-radius-lg: 16px;
    --ndp-radius-xl: 20px;
}

/* Dark Theme */
.ndp-dark {
    --ndp-bg-primary: #0f172a;
    --ndp-bg-secondary: #1e293b;
    --ndp-bg-tertiary: #334155;
    
    --ndp-text-primary: #f8fafc;
    --ndp-text-secondary: #cbd5e1;
    --ndp-text-tertiary: #64748b;
    
    --ndp-border-light: rgba(255, 255, 255, 0.06);
    --ndp-border-medium: rgba(255, 255, 255, 0.1);
    
    --ndp-shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.4);
    --ndp-shadow-md: 0 4px 16px rgba(0, 0, 0, 0.5);
    --ndp-shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.6);
    --ndp-shadow-xl: 0 20px 50px rgba(0, 0, 0, 0.7);
}

/* Theme Variants */
.ndp-theme-ocean {
    --ndp-accent-start: #06b6d4;
    --ndp-accent-end: #3b82f6;
    --ndp-accent-gradient: linear-gradient(135deg, #06b6d4 0%, #3b82f6 100%);
    --ndp-accent-gradient-hover: linear-gradient(135deg, #0891b2 0%, #2563eb 100%);
    --ndp-shadow-glow: 0 0 40px rgba(6, 182, 212, 0.25);
}

.ndp-theme-forest {
    --ndp-accent-start: #10b981;
    --ndp-accent-end: #84cc16;
    --ndp-accent-gradient: linear-gradient(135deg, #10b981 0%, #84cc16 100%);
    --ndp-accent-gradient-hover: linear-gradient(135deg, #059669 0%, #65a30d 100%);
    --ndp-shadow-glow: 0 0 40px rgba(16, 185, 129, 0.25);
}

.ndp-theme-sunset {
    --ndp-accent-start: #f97316;
    --ndp-accent-end: #ef4444;
    --ndp-accent-gradient: linear-gradient(135deg, #f97316 0%, #ef4444 100%);
    --ndp-accent-gradient-hover: linear-gradient(135deg, #ea580c 0%, #dc2626 100%);
    --ndp-shadow-glow: 0 0 40px rgba(249, 115, 22, 0.25);
}

.ndp-theme-rose {
    --ndp-accent-start: #f43f5e;
    --ndp-accent-end: #a855f7;
    --ndp-accent-gradient: linear-gradient(135deg, #f43f5e 0%, #a855f7 100%);
    --ndp-accent-gradient-hover: linear-gradient(135deg, #e11d48 0%, #9333ea 100%);
    --ndp-shadow-glow: 0 0 40px rgba(244, 63, 94, 0.25);
}

/* ============================================
   Main Container
   ============================================ */
.nepali-datepicker {
    position: relative;
    font-family: var(--ndp-font-nepali);
    width: 100%;
    max-width: 340px;
}

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

/* ============================================
   Input Field
   ============================================ */
.ndp-input-wrapper {
    position: relative;
    width: 100%;
}

.ndp-input {
    width: 100%;
    padding: 14px 48px 14px 16px;
    font-family: var(--ndp-font-nepali);
    font-size: 15px;
    font-weight: 600;
    color: var(--ndp-text-primary);
    background: var(--ndp-bg-primary);
    border: 2px solid var(--ndp-border-medium);
    border-radius: var(--ndp-radius-lg);
    outline: none;
    cursor: pointer;
    transition: border-color 0.2s, box-shadow 0.2s;
    box-shadow: var(--ndp-shadow-sm);
}

.ndp-input:hover {
    border-color: var(--ndp-accent-start);
}

.ndp-input:focus {
    border-color: var(--ndp-accent-start);
    box-shadow: var(--ndp-shadow-md), 0 0 0 4px rgba(139, 92, 246, 0.1);
}

.ndp-input::placeholder {
    color: var(--ndp-text-tertiary);
    font-weight: 500;
}

.ndp-input-icon {
    position: absolute;
    right: 14px;
    top: 50%;
    transform: translateY(-50%);
    width: 22px;
    height: 22px;
    color: var(--ndp-text-tertiary);
    pointer-events: none;
    transition: color 0.2s;
}

.ndp-input:hover + .ndp-input-icon,
.ndp-input:focus + .ndp-input-icon {
    color: var(--ndp-accent-start);
}

.ndp-input-icon svg {
    width: 100%;
    height: 100%;
    stroke-width: 2;
}

/* ============================================
   Calendar Container - FIXED POSITIONING
   ============================================ */
.ndp-calendar {
    position: fixed;
    width: 340px;
    background: var(--ndp-bg-primary);
    border: 1px solid var(--ndp-border-light);
    border-radius: var(--ndp-radius-xl);
    box-shadow: var(--ndp-shadow-xl), var(--ndp-shadow-glow);
    z-index: 999999;
    visibility: hidden;
    opacity: 0;
    transform: scale(0.95) translateY(-10px);
    transition: none;
    overflow: hidden;
}

.ndp-calendar.ndp-open {
    visibility: visible;
    opacity: 1;
    transform: scale(1) translateY(0);
    animation: ndpSlideIn 0.2s ease-out;
}

.ndp-calendar.ndp-position-top {
    animation: ndpSlideInUp 0.2s ease-out;
}

@keyframes ndpSlideIn {
    from {
        opacity: 0;
        transform: scale(0.95) translateY(-10px);
    }
    to {
        opacity: 1;
        transform: scale(1) translateY(0);
    }
}

@keyframes ndpSlideInUp {
    from {
        opacity: 0;
        transform: scale(0.95) translateY(10px);
    }
    to {
        opacity: 1;
        transform: scale(1) translateY(0);
    }
}

/* ============================================
   Calendar Header
   ============================================ */
.ndp-header {
    padding: 16px;
    background: var(--ndp-accent-gradient);
    position: relative;
}

.ndp-header::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -30%;
    width: 100%;
    height: 150%;
    background: radial-gradient(circle, rgba(255,255,255,0.15) 0%, transparent 60%);
    pointer-events: none;
}

.ndp-header-nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: relative;
    z-index: 1;
}

.ndp-nav-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 38px;
    height: 38px;
    background: rgba(255, 255, 255, 0.2);
    border: none;
    border-radius: var(--ndp-radius-md);
    color: white;
    cursor: pointer;
    transition: background 0.15s, transform 0.15s;
}

.ndp-nav-btn:hover {
    background: rgba(255, 255, 255, 0.3);
}

.ndp-nav-btn:active {
    transform: scale(0.92);
}

.ndp-nav-btn svg {
    width: 20px;
    height: 20px;
    stroke-width: 2.5;
}

.ndp-title-btn {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 2px;
    background: rgba(255, 255, 255, 0.15);
    border: none;
    border-radius: var(--ndp-radius-md);
    padding: 8px 20px;
    cursor: pointer;
    transition: background 0.15s;
    min-width: 160px;
}

.ndp-title-btn:hover {
    background: rgba(255, 255, 255, 0.25);
}

.ndp-title-nepali {
    font-size: 17px;
    font-weight: 700;
    color: white;
    font-family: var(--ndp-font-nepali);
    line-height: 1.2;
}

.ndp-title-english {
    font-size: 11px;
    font-weight: 600;
    color: rgba(255, 255, 255, 0.85);
    font-family: var(--ndp-font-english);
}

/* ============================================
   Picker Views (Month/Year)
   ============================================ */
.ndp-month-picker,
.ndp-year-picker {
    display: none;
    padding: 16px;
    background: var(--ndp-bg-primary);
}

.ndp-month-picker.ndp-active,
.ndp-year-picker.ndp-active {
    display: block;
}

.ndp-picker-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 14px;
    padding-bottom: 12px;
    border-bottom: 1px solid var(--ndp-border-light);
}

.ndp-picker-title {
    font-size: 15px;
    font-weight: 700;
    color: var(--ndp-text-primary);
}

.ndp-picker-close {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 30px;
    height: 30px;
    background: var(--ndp-bg-tertiary);
    border: none;
    border-radius: var(--ndp-radius-sm);
    color: var(--ndp-text-secondary);
    cursor: pointer;
    transition: background 0.15s, color 0.15s;
}

.ndp-picker-close:hover {
    background: var(--ndp-accent-gradient);
    color: white;
}

.ndp-picker-close svg {
    width: 16px;
    height: 16px;
}

/* Month Grid */
.ndp-month-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 8px;
}

.ndp-month-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 12px 8px;
    background: var(--ndp-bg-secondary);
    border: 2px solid transparent;
    border-radius: var(--ndp-radius-md);
    cursor: pointer;
    transition: background 0.15s, border-color 0.15s, transform 0.15s;
}

.ndp-month-item:hover {
    background: var(--ndp-bg-tertiary);
    border-color: var(--ndp-accent-start);
    transform: scale(1.03);
}

.ndp-month-item.ndp-selected {
    background: var(--ndp-accent-gradient);
    border-color: transparent;
}

.ndp-month-item.ndp-selected .ndp-month-nep,
.ndp-month-item.ndp-selected .ndp-month-eng {
    color: white;
}

.ndp-month-item.ndp-current:not(.ndp-selected) {
    border-color: var(--ndp-today);
}

.ndp-month-nep {
    font-size: 13px;
    font-weight: 700;
    color: var(--ndp-text-primary);
    font-family: var(--ndp-font-nepali);
}

.ndp-month-eng {
    font-size: 10px;
    font-weight: 600;
    color: var(--ndp-text-tertiary);
    font-family: var(--ndp-font-english);
    margin-top: 2px;
}

/* Year Picker */
.ndp-year-nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 14px;
}

.ndp-year-range {
    font-size: 14px;
    font-weight: 700;
    color: var(--ndp-text-primary);
    font-family: var(--ndp-font-nepali);
}

.ndp-year-nav-btns {
    display: flex;
    gap: 6px;
}

.ndp-year-nav-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 30px;
    height: 30px;
    background: var(--ndp-bg-tertiary);
    border: none;
    border-radius: var(--ndp-radius-sm);
    color: var(--ndp-text-secondary);
    cursor: pointer;
    transition: background 0.15s, color 0.15s;
}

.ndp-year-nav-btn:hover {
    background: var(--ndp-accent-gradient);
    color: white;
}

.ndp-year-nav-btn svg {
    width: 16px;
    height: 16px;
}

.ndp-year-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 8px;
}

.ndp-year-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 12px 6px;
    background: var(--ndp-bg-secondary);
    border: 2px solid transparent;
    border-radius: var(--ndp-radius-md);
    cursor: pointer;
    transition: background 0.15s, border-color 0.15s, transform 0.15s;
}

.ndp-year-item:hover:not(.ndp-disabled) {
    background: var(--ndp-bg-tertiary);
    border-color: var(--ndp-accent-start);
    transform: scale(1.03);
}

.ndp-year-item.ndp-selected {
    background: var(--ndp-accent-gradient);
    border-color: transparent;
}

.ndp-year-item.ndp-selected .ndp-year-nep,
.ndp-year-item.ndp-selected .ndp-year-eng {
    color: white;
}

.ndp-year-item.ndp-current:not(.ndp-selected) {
    border-color: var(--ndp-today);
}

.ndp-year-item.ndp-disabled {
    opacity: 0.35;
    cursor: not-allowed;
}

.ndp-year-nep {
    font-size: 13px;
    font-weight: 700;
    color: var(--ndp-text-primary);
    font-family: var(--ndp-font-nepali);
}

.ndp-year-eng {
    font-size: 10px;
    font-weight: 600;
    color: var(--ndp-text-tertiary);
    font-family: var(--ndp-font-english);
    margin-top: 2px;
}

/* ============================================
   Days View
   ============================================ */
.ndp-days-view {
    display: block;
}

.ndp-days-view.ndp-hidden {
    display: none;
}

/* Weekday Headers */
.ndp-weekdays {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    padding: 10px 12px;
    background: var(--ndp-bg-secondary);
    border-bottom: 1px solid var(--ndp-border-light);
}

.ndp-weekday {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 6px 2px;
}

.ndp-weekday-nep {
    font-size: 12px;
    font-weight: 700;
    color: var(--ndp-text-secondary);
}

.ndp-weekday-eng {
    font-size: 9px;
    font-weight: 600;
    color: var(--ndp-text-tertiary);
    font-family: var(--ndp-font-english);
    margin-top: 1px;
}

.ndp-weekday.ndp-sun .ndp-weekday-nep { color: var(--ndp-sunday); }
.ndp-weekday.ndp-sat .ndp-weekday-nep { color: var(--ndp-saturday); }

/* Days Grid */
.ndp-days {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    padding: 10px;
    gap: 4px;
    background: var(--ndp-bg-primary);
}

.ndp-day {
    position: relative;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    aspect-ratio: 1;
    padding: 2px;
    background: transparent;
    border-radius: var(--ndp-radius-md);
    cursor: pointer;
    transition: background 0.15s, transform 0.15s;
    border: 2px solid transparent;
}

.ndp-day:hover:not(.ndp-empty):not(.ndp-disabled) {
    background: var(--ndp-bg-tertiary);
    transform: scale(1.1);
}

.ndp-day.ndp-empty {
    cursor: default;
    visibility: hidden;
}

.ndp-day.ndp-disabled {
    opacity: 0.3;
    cursor: not-allowed;
}

.ndp-day.ndp-today {
    border-color: var(--ndp-today);
    background: rgba(245, 158, 11, 0.1);
}

.ndp-day.ndp-selected {
    background: var(--ndp-accent-gradient);
    border-color: transparent;
    transform: scale(1.1);
    box-shadow: var(--ndp-shadow-md);
}

.ndp-day.ndp-selected:hover {
    background: var(--ndp-accent-gradient-hover);
}

.ndp-day.ndp-selected .ndp-day-nep,
.ndp-day.ndp-selected .ndp-day-eng {
    color: white;
}

.ndp-day-nep {
    font-size: 14px;
    font-weight: 700;
    color: var(--ndp-text-primary);
    line-height: 1;
}

.ndp-day-eng {
    font-size: 8px;
    font-weight: 600;
    color: var(--ndp-text-tertiary);
    font-family: var(--ndp-font-english);
    margin-top: 2px;
}

.ndp-day.ndp-sun:not(.ndp-selected) .ndp-day-nep { color: var(--ndp-sunday); }
.ndp-day.ndp-sat:not(.ndp-selected) .ndp-day-nep { color: var(--ndp-saturday); }

/* ============================================
   Footer
   ============================================ */
.ndp-footer {
    display: flex;
    gap: 8px;
    padding: 14px;
    background: var(--ndp-bg-secondary);
    border-top: 1px solid var(--ndp-border-light);
}

.ndp-btn {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    padding: 10px 14px;
    font-family: var(--ndp-font-nepali);
    font-size: 13px;
    font-weight: 600;
    border-radius: var(--ndp-radius-md);
    cursor: pointer;
    transition: background 0.15s, transform 0.15s, box-shadow 0.15s;
    border: none;
}

.ndp-btn svg {
    width: 15px;
    height: 15px;
}

.ndp-btn-primary {
    background: var(--ndp-accent-gradient);
    color: white;
}

.ndp-btn-primary:hover {
    box-shadow: var(--ndp-shadow-md);
    transform: translateY(-1px);
}

.ndp-btn-secondary {
    background: var(--ndp-bg-primary);
    color: var(--ndp-text-secondary);
    border: 1px solid var(--ndp-border-medium);
}

.ndp-btn-secondary:hover {
    background: var(--ndp-bg-tertiary);
    color: var(--ndp-text-primary);
}

.ndp-btn-ghost {
    background: transparent;
    color: var(--ndp-text-tertiary);
}

.ndp-btn-ghost:hover {
    background: var(--ndp-bg-tertiary);
    color: var(--ndp-text-primary);
}

/* ============================================
   Selected Display
   ============================================ */
.ndp-display {
    margin-top: 10px;
    padding: 14px 16px;
    background: var(--ndp-bg-secondary);
    border: 1px solid var(--ndp-border-light);
    border-radius: var(--ndp-radius-lg);
    display: none;
}

.ndp-display.ndp-show {
    display: block;
}

.ndp-display-label {
    font-size: 10px;
    font-weight: 700;
    color: var(--ndp-text-tertiary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    font-family: var(--ndp-font-english);
    margin-bottom: 4px;
}

.ndp-display-value {
    font-size: 16px;
    font-weight: 700;
    color: var(--ndp-text-primary);
}

.ndp-display-sub {
    font-size: 12px;
    font-weight: 500;
    color: var(--ndp-text-secondary);
    font-family: var(--ndp-font-english);
    margin-top: 2px;
}

/* ============================================
   Mode Variants
   ============================================ */
.ndp-nepali-only .ndp-title-english,
.ndp-nepali-only .ndp-weekday-eng,
.ndp-nepali-only .ndp-day-eng,
.ndp-nepali-only .ndp-display-sub,
.ndp-nepali-only .ndp-month-eng,
.ndp-nepali-only .ndp-year-eng {
    display: none;
}

.ndp-english-only .ndp-title-nepali { display: none; }
.ndp-english-only .ndp-title-english { font-size: 14px; }
.ndp-english-only .ndp-weekday-nep { display: none; }
.ndp-english-only .ndp-weekday-eng { font-size: 11px; color: var(--ndp-text-secondary); }
.ndp-english-only .ndp-day-eng { display: none; }
.ndp-english-only .ndp-day-nep { font-family: var(--ndp-font-english); }
.ndp-english-only .ndp-month-nep { display: none; }
.ndp-english-only .ndp-month-eng { font-size: 12px; color: var(--ndp-text-primary); }
.ndp-english-only .ndp-year-nep { display: none; }
.ndp-english-only .ndp-year-eng { font-size: 12px; color: var(--ndp-text-primary); }

/* ============================================
   Responsive
   ============================================ */
@media (max-width: 400px) {
    .ndp-calendar {
        width: calc(100vw - 20px) !important;
        max-width: 340px;
    }
    
    .ndp-day-nep { font-size: 12px; }
    .ndp-day-eng { font-size: 7px; }
    .ndp-header { padding: 14px; }
    .ndp-title-nepali { font-size: 15px; }
    .ndp-title-btn { min-width: 130px; padding: 6px 14px; }
    .ndp-days { padding: 8px; gap: 3px; }
    .ndp-nav-btn { width: 34px; height: 34px; }
}