/**
 * DRFZ Equipment Booking System - Complete CSS v2.0
 * REDESIGNED: Better contrasts, consistent buttons, improved UX
 */

/* ==========================================================================
   CSS Variables
   ========================================================================== */
:root {
    --drfz-primary: #2c5aa0;
    --drfz-secondary: #66b2ff;
    --drfz-success: #28a745;
    --drfz-warning: #ff9800;
    --drfz-danger: #dc3545;
    --drfz-info: #17a2b8;
    
    /* New color scheme for better contrast */
    --drfz-past: #bdbdbd;
    --drfz-past-dark: #9e9e9e;
    --drfz-today: #ff9800;
    --drfz-today-light: #ffe0b2;
    --drfz-future: #4caf50;
    --drfz-future-light: #c8e6c9;
    --drfz-selected: #2c5aa0;
    
    --drfz-gray-100: #f8f9fa;
    --drfz-gray-200: #e9ecef;
    --drfz-gray-300: #dee2e6;
    --drfz-gray-400: #ced4da;
    --drfz-gray-500: #adb5bd;
    --drfz-gray-600: #6c757d;
    --drfz-gray-700: #495057;
    --drfz-gray-800: #343a40;
    
    --drfz-border-radius: 8px;
    --drfz-shadow: 0 2px 8px rgba(0,0,0,0.1);
    --drfz-shadow-lg: 0 4px 16px rgba(0,0,0,0.15);
    --drfz-transition: all 0.2s ease;
}

/* ==========================================================================
   UNIFIED BUTTON STYLES
   ========================================================================== */
.drfz-btn,
.button.drfz-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    padding: 10px 20px;
    border: 2px solid transparent;
    border-radius: var(--drfz-border-radius);
    font-size: 14px;
    font-weight: 600;
    text-decoration: none;
    text-align: center;
    cursor: pointer;
    transition: var(--drfz-transition);
    line-height: 1.4;
    user-select: none;
    white-space: nowrap;
}

.drfz-btn:hover,
.button.drfz-btn:hover {
    transform: translateY(-2px);
    box-shadow: var(--drfz-shadow);
    text-decoration: none;
}

.drfz-btn:active {
    transform: translateY(0);
}

.drfz-btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none !important;
}

/* Primary Button */
.drfz-btn-primary,
.button.drfz-btn-primary {
    background: var(--drfz-primary);
    color: white;
    border-color: var(--drfz-primary);
}

.drfz-btn-primary:hover,
.button.drfz-btn-primary:hover {
    background: var(--drfz-secondary);
    border-color: var(--drfz-secondary);
    color: white;
}

/* Secondary Button */
.drfz-btn-secondary,
.button.drfz-btn-secondary {
    background: white;
    color: var(--drfz-gray-700);
    border-color: var(--drfz-gray-400);
}

.drfz-btn-secondary:hover,
.button.drfz-btn-secondary:hover {
    background: var(--drfz-gray-100);
    border-color: var(--drfz-gray-600);
    color: var(--drfz-gray-800);
}

/* Success Button */
.drfz-btn-success {
    background: var(--drfz-success);
    color: white;
    border-color: var(--drfz-success);
}

.drfz-btn-success:hover {
    background: #218838;
    border-color: #1e7e34;
    color: white;
}

/* Danger Button */
.drfz-btn-danger,
.button.button-link-delete {
    background: white;
    color: var(--drfz-danger);
    border-color: var(--drfz-danger);
}

.drfz-btn-danger:hover,
.button.button-link-delete:hover {
    background: var(--drfz-danger);
    border-color: var(--drfz-danger);
    color: white;
}

/* Small Button */
.drfz-btn-small,
.button.button-small {
    padding: 6px 14px;
    font-size: 13px;
}

/* Large Button */
.drfz-btn-large,
.button.button-large {
    padding: 14px 28px;
    font-size: 16px;
}

/* Full Width Button */
.drfz-btn-block {
    display: flex;
    width: 100%;
}

/* ==========================================================================
   Calendar Container
   ========================================================================== */
.drfz-calendar-container {
    max-width: 100%;
    margin: 0 auto;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
}

.drfz-calendar-header {
    background: white;
    border: 1px solid var(--drfz-gray-300);
    border-radius: var(--drfz-border-radius) var(--drfz-border-radius) 0 0;
    padding: 24px;
    text-align: center;
    border-bottom: none;
}

.drfz-calendar-header h3 {
    margin: 0 0 12px 0;
    color: var(--drfz-primary);
    font-size: 1.6em;
    font-weight: 700;
}

.drfz-equipment-description {
    margin: 12px 0;
    color: var(--drfz-gray-600);
    font-size: 0.95em;
    line-height: 1.5;
}

.drfz-booking-rules {
    margin: 15px 0 0 0;
    padding: 12px;
    background: var(--drfz-gray-100);
    border-radius: var(--drfz-border-radius);
    border-left: 4px solid var(--drfz-info);
}

/* ==========================================================================
   Booking Mode Switcher (NEW DESIGN)
   ========================================================================== */
.drfz-booking-mode-switcher {
    display: flex;
    gap: 10px;
    padding: 20px;
    background: white;
    border: 1px solid var(--drfz-gray-300);
    border-top: none;
    justify-content: center;
}

.drfz-mode-btn {
    flex: 1;
    max-width: 250px;
    padding: 12px 20px;
    background: white;
    color: var(--drfz-gray-700);
    border: 2px solid var(--drfz-gray-300);
    border-radius: var(--drfz-border-radius);
    font-size: 15px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--drfz-transition);
}

.drfz-mode-btn:hover {
    border-color: var(--drfz-primary);
    color: var(--drfz-primary);
    transform: translateY(-2px);
    box-shadow: var(--drfz-shadow);
}

.drfz-mode-btn.drfz-mode-active {
    background: var(--drfz-primary);
    color: white;
    border-color: var(--drfz-primary);
}

/* ==========================================================================
   Calendar Grid - IMPROVED CONTRAST
   ========================================================================== */
.drfz-calendar-wrapper {
    background: white;
    border: 1px solid var(--drfz-gray-300);
    border-top: none;
    border-radius: 0 0 var(--drfz-border-radius) var(--drfz-border-radius);
    padding: 20px;
}

.drfz-calendar-navigation {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
    padding-bottom: 15px;
    border-bottom: 2px solid var(--drfz-gray-200);
}

.drfz-nav-btn {
    background: var(--drfz-primary);
    color: white;
    border: none;
    padding: 10px 18px;
    border-radius: var(--drfz-border-radius);
    cursor: pointer;
    font-size: 14px;
    font-weight: 600;
    transition: var(--drfz-transition);
}

.drfz-nav-btn:hover {
    background: var(--drfz-secondary);
    transform: translateY(-2px);
    box-shadow: var(--drfz-shadow);
}

.drfz-current-month {
    font-weight: 700;
    font-size: 1.2em;
    color: var(--drfz-gray-800);
}

.drfz-calendar-weekdays {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    gap: 2px;
    margin-bottom: 2px;
    background: var(--drfz-gray-300);
    border-radius: var(--drfz-border-radius);
    overflow: hidden;
}

.drfz-weekday {
    background: var(--drfz-gray-100);
    padding: 14px 8px;
    text-align: center;
    font-weight: 700;
    font-size: 0.85em;
    color: var(--drfz-gray-700);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.drfz-calendar-days {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    gap: 2px;
    background: var(--drfz-gray-300);
    border-radius: var(--drfz-border-radius);
    overflow: hidden;
}

/* ==========================================================================
   Calendar Days - BETTER COLOR CONTRAST
   ========================================================================== */
.drfz-calendar-day {
    background: white;
    min-height: 110px;
    padding: 10px;
    position: relative;
    cursor: pointer;
    transition: var(--drfz-transition);
    display: flex;
    flex-direction: column;
    border: 3px solid transparent;
}

/* PAST DAYS - Gray with darker shade */
.drfz-calendar-day.drfz-past {
    background: var(--drfz-past) !important;
    color: var(--drfz-gray-700);
    cursor: default; /* FIXED: Not "not-allowed" anymore */
}

.drfz-calendar-day.drfz-past:hover {
    background: var(--drfz-past-dark) !important;
    transform: none; /* Don't animate past days */
}

/* TODAY - Orange highlight */
.drfz-calendar-day.drfz-today {
    background: var(--drfz-today-light) !important;
    border-color: var(--drfz-today);
    font-weight: bold;
}

.drfz-calendar-day.drfz-today:hover {
    background: var(--drfz-today) !important;
    color: white;
    transform: scale(1.02);
    box-shadow: var(--drfz-shadow);
}

/* FUTURE DAYS - Clickable, green tint */
.drfz-calendar-day:not(.drfz-past):not(.drfz-today):not(.drfz-other-month):hover {
    background: var(--drfz-future-light);
    transform: scale(1.02);
    z-index: 10;
    box-shadow: var(--drfz-shadow);
}

/* Other month days */
.drfz-calendar-day.drfz-other-month {
    background: var(--drfz-gray-100);
    color: var(--drfz-gray-400);
    cursor: not-allowed;
}

/* Weekend styling */
.drfz-calendar-day.drfz-weekend {
    background: #fafafa;
}

/* Selected range */
.drfz-calendar-day.drfz-selected {
    background: var(--drfz-selected) !important;
    color: white;
    font-weight: bold;
}

.drfz-calendar-day.drfz-start-date {
    border-top-left-radius: 6px;
    border-bottom-left-radius: 6px;
}

.drfz-calendar-day.drfz-end-date {
    border-top-right-radius: 6px;
    border-bottom-right-radius: 6px;
}

.drfz-calendar-day.drfz-in-range {
    background: var(--drfz-secondary) !important;
    color: white;
}

/* Days with bookings */
.drfz-calendar-day.drfz-has-bookings {
    border-left: 5px solid var(--drfz-warning);
}

.drfz-day-number {
    font-weight: 700;
    font-size: 1em;
    margin-bottom: 6px;
}

/* ==========================================================================
   Booking Indicators - IMPROVED
   ========================================================================== */
.drfz-day-bookings {
    display: flex;
    flex-direction: column;
    gap: 4px;
    margin-top: 6px;
    max-height: 75px;
    overflow-y: auto;
    font-size: 0.7em;
    flex-grow: 1;
}

.drfz-booking-indicator {
    background: rgba(255, 152, 0, 0.25);
    border-left: 4px solid var(--drfz-warning);
    padding: 4px 6px;
    border-radius: 4px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    transition: var(--drfz-transition);
    cursor: pointer;
    line-height: 1.4;
}

.drfz-booking-indicator:hover {
    background: rgba(255, 152, 0, 0.5);
    /* REMOVED: transform: translateX(3px); - Causes jumping in multi-column layout */
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
    z-index: 2;
    position: relative;
}

.drfz-booking-indicator.drfz-status-active {
    background: rgba(76, 175, 80, 0.2);
    border-left-color: var(--drfz-success);
}

.drfz-booking-indicator.drfz-status-active:hover {
    background: rgba(76, 175, 80, 0.4);
}

.drfz-booking-indicator.drfz-status-cancelled {
    background: rgba(158, 158, 158, 0.2);
    border-left-color: var(--drfz-gray-500);
    opacity: 0.7;
    text-decoration: line-through;
}

/* Scrollbar */
.drfz-day-bookings::-webkit-scrollbar {
    width: 5px;
}

.drfz-day-bookings::-webkit-scrollbar-track {
    background: rgba(0,0,0,0.05);
    border-radius: 3px;
}

.drfz-day-bookings::-webkit-scrollbar-thumb {
    background: var(--drfz-gray-500);
    border-radius: 3px;
}

/* ==========================================================================
   Legend - UPDATED COLORS
   ========================================================================== */
.drfz-legend {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 15px;
    margin-top: 20px;
    padding-top: 20px;
    border-top: 2px solid var(--drfz-gray-200);
}

.drfz-legend-item {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.9em;
    font-weight: 500;
    color: var(--drfz-gray-700);
}

.drfz-color-available,
.drfz-color-booked,
.drfz-color-selected,
.drfz-color-past,
.drfz-color-today {
    width: 16px;
    height: 16px;
    border-radius: 3px;
    border: 2px solid var(--drfz-gray-400);
}

.drfz-color-available {
    background: white;
}

.drfz-color-past {
    background: var(--drfz-past);
    border-color: var(--drfz-past-dark);
}

.drfz-color-today {
    background: var(--drfz-today);
    border-color: darkorange;
}

.drfz-color-booked {
    background: var(--drfz-warning);
    border-color: darkorange;
}

.drfz-color-selected {
    background: var(--drfz-primary);
    border-color: #1e3f70;
}

/* ==========================================================================
   Tooltip
   ========================================================================== */
#drfz-tooltips-container {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 9999;
}

.drfz-booking-tooltip {
    position: fixed;
    background: white;
    border: 3px solid var(--drfz-primary);
    border-radius: var(--drfz-border-radius);
    padding: 14px;
    min-width: 220px;
    max-width: 320px;
    box-shadow: var(--drfz-shadow-lg);
    z-index: 10000;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s ease, visibility 0.3s ease;
    pointer-events: none;
    display: none;
}

.drfz-booking-tooltip.drfz-tooltip-visible {
    opacity: 1;
    visibility: visible;
}

.drfz-tooltip-header {
    font-size: 0.95em;
    font-weight: 700;
    color: var(--drfz-primary);
    margin-bottom: 10px;
    border-bottom: 2px solid var(--drfz-gray-200);
    padding-bottom: 8px;
}

.drfz-tooltip-row {
    font-size: 0.85em;
    margin-bottom: 6px;
    line-height: 1.5;
    color: var(--drfz-gray-800);
}

.drfz-tooltip-label {
    font-weight: 600;
    color: var(--drfz-gray-600);
}

/* ==========================================================================
   Time Slots - IMPROVED SELECTION VISIBILITY
   ========================================================================== */
.drfz-time-slots-container {
    margin-bottom: 25px;
    padding: 20px;
    background: #f8f9fa;
    border-radius: var(--drfz-border-radius);
    border: 3px solid var(--drfz-primary);
}

.drfz-time-slots-container h5 {
    margin: 0 0 18px 0;
    color: var(--drfz-primary);
    font-size: 1.15em;
    font-weight: 700;
}

.drfz-time-slots {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
    gap: 12px;
    margin-bottom: 15px;
}

.drfz-time-slot {
    padding: 16px 14px;
    border-radius: var(--drfz-border-radius);
    text-align: center;
    transition: all 0.25s ease;
    border: 3px solid transparent;
    background: white;
    cursor: default;
    font-weight: 600;
}

/* Available slots */
.drfz-time-slot.drfz-slot-available {
    border-color: var(--drfz-success);
    cursor: pointer;
    box-shadow: 0 2px 4px rgba(0,0,0,0.08);
}

.drfz-time-slot.drfz-slot-available:hover {
    background: var(--drfz-future-light);
    transform: translateY(-3px);
    box-shadow: 0 6px 16px rgba(76, 175, 80, 0.3);
    border-color: #1e7e34;
}

/* SELECTED SLOTS - HIGHLY VISIBLE */
.drfz-time-slot.drfz-slot-selected {
    background: linear-gradient(135deg, var(--drfz-primary) 0%, var(--drfz-secondary) 100%) !important;
    color: white !important;
    border-color: #1e3f70 !important;
    box-shadow: 0 0 0 5px rgba(44, 90, 160, 0.25), 0 6px 20px rgba(0,0,0,0.25) !important;
    transform: scale(1.1) !important;
    font-weight: 800 !important;
    position: relative;
}

.drfz-time-slot.drfz-slot-selected::before {
    content: '✓';
    position: absolute;
    top: 6px;
    right: 10px;
    font-size: 20px;
    font-weight: bold;
    color: white;
    text-shadow: 0 2px 4px rgba(0,0,0,0.3);
}

.drfz-time-slot.drfz-slot-selected .drfz-slot-time,
.drfz-time-slot.drfz-slot-selected .drfz-slot-status {
    color: white !important;
}

/* Booked slots */
.drfz-time-slot.drfz-slot-booked {
    background: var(--drfz-gray-200);
    border-color: var(--drfz-gray-400);
    opacity: 0.6;
    cursor: not-allowed;
    color: var(--drfz-gray-600);
}

.drfz-slot-time {
    display: block;
    font-weight: 700;
    margin-bottom: 6px;
    font-size: 1.05em;
}

.drfz-slot-status {
    display: block;
    font-size: 0.85em;
    font-weight: 600;
}

/* Selected info box */
.drfz-selected-info {
    padding: 18px;
    background: linear-gradient(135deg, #e3f2fd 0%, #bbdefb 100%);
    border-radius: var(--drfz-border-radius);
    border-left: 6px solid var(--drfz-info);
    font-size: 1.05em;
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
    margin-top: 15px;
}

.drfz-selected-info strong {
    color: #0d47a1;
    font-size: 1.1em;
}

.drfz-selected-info span {
    color: #1565c0;
    font-weight: 700;
    font-size: 1.15em;
}

/* ==========================================================================
   Booking Form
   ========================================================================== */
.drfz-booking-form {
    background: white;
    border: 1px solid var(--drfz-gray-300);
    border-radius: var(--drfz-border-radius);
    padding: 28px;
    margin-top: 25px;
    box-shadow: var(--drfz-shadow);
}

.drfz-booking-form h4 {
    margin: 0 0 20px 0;
    color: var(--drfz-primary);
    font-size: 1.4em;
    font-weight: 700;
    border-bottom: 2px solid var(--drfz-gray-200);
    padding-bottom: 12px;
}

.drfz-booking-instruction {
    background: linear-gradient(135deg, #e3f2fd 0%, #bbdefb 100%);
    border-left: 5px solid var(--drfz-info);
    padding: 16px;
    margin-bottom: 24px;
    border-radius: var(--drfz-border-radius);
    font-size: 0.95em;
    line-height: 1.6;
}

.drfz-form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
    margin-bottom: 20px;
}

.drfz-form-group {
    display: flex;
    flex-direction: column;
}

.drfz-form-group label {
    font-weight: 700;
    margin-bottom: 8px;
    color: var(--drfz-gray-800);
    font-size: 0.95em;
}

.drfz-form-group input,
.drfz-form-group textarea,
.drfz-form-group select {
    padding: 12px 14px;
    border: 2px solid var(--drfz-gray-300);
    border-radius: var(--drfz-border-radius);
    font-size: 0.95em;
    transition: var(--drfz-transition);
    font-family: inherit;
}

.drfz-form-group input:focus,
.drfz-form-group textarea:focus,
.drfz-form-group select:focus {
    outline: none;
    border-color: var(--drfz-primary);
    box-shadow: 0 0 0 4px rgba(44, 90, 160, 0.1);
}

.drfz-form-actions {
    display: flex;
    gap: 12px;
    justify-content: flex-end;
    padding-top: 24px;
    border-top: 2px solid var(--drfz-gray-200);
    margin-top: 20px;
}

/* ==========================================================================
   Dashboard & User Bookings
   ========================================================================== */
.drfz-dashboard-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
    gap: 20px;
    margin: 24px 0 32px 0;
}

.drfz-stat-card {
    background: white;
    border: 2px solid var(--drfz-gray-300);
    border-radius: var(--drfz-border-radius);
    padding: 24px;
    text-align: center;
    box-shadow: var(--drfz-shadow);
    transition: var(--drfz-transition);
}

.drfz-stat-card:hover {
    box-shadow: var(--drfz-shadow-lg);
    transform: translateY(-3px);
    border-color: var(--drfz-primary);
}

.drfz-stat-card h3,
.drfz-stat-card h4 {
    margin: 0 0 10px 0;
    font-size: 2.2em;
    color: var(--drfz-primary);
    font-weight: 800;
}

.drfz-stat-card p {
    margin: 0;
    color: var(--drfz-gray-600);
    font-size: 0.95em;
    font-weight: 600;
}

.drfz-bookings-list {
    display: grid;
    gap: 20px;
}

.drfz-booking-card {
    background: white;
    border: 2px solid var(--drfz-gray-300);
    border-radius: var(--drfz-border-radius);
    padding: 24px;
    box-shadow: var(--drfz-shadow);
    transition: var(--drfz-transition);
}

.drfz-booking-card:hover {
    box-shadow: var(--drfz-shadow-lg);
    transform: translateY(-2px);
}

.drfz-booking-card.drfz-status-cancelled {
    opacity: 0.65;
    border-color: var(--drfz-gray-400);
}

.drfz-booking-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 16px;
    padding-bottom: 14px;
    border-bottom: 2px solid var(--drfz-gray-200);
}

.drfz-booking-header h4 {
    margin: 0;
    color: var(--drfz-primary);
    font-size: 1.3em;
    font-weight: 700;
}

.drfz-booking-status {
    padding: 6px 14px;
    border-radius: 16px;
    font-size: 0.8em;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.drfz-booking-status.drfz-status-active {
    background: var(--drfz-success);
    color: white;
}

.drfz-booking-status.drfz-status-cancelled {
    background: var(--drfz-gray-500);
    color: white;
}

.drfz-booking-today {
    background: var(--drfz-warning);
    color: white;
    padding: 5px 10px;
    border-radius: 5px;
    font-size: 0.75em;
    font-weight: 700;
    text-transform: uppercase;
}

.drfz-booking-actions {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
}

/* ==========================================================================
   Responsive Design
   ========================================================================== */
@media (max-width: 768px) {
    .drfz-calendar-navigation {
        flex-direction: column;
        gap: 12px;
    }
    
    .drfz-calendar-day {
        min-height: 80px;
        padding: 6px;
    }
    
    .drfz-booking-mode-switcher {
        flex-direction: column;
    }
    
    .drfz-mode-btn {
        max-width: 100%;
    }
    
    .drfz-form-row {
        grid-template-columns: 1fr;
    }
    
    .drfz-form-actions {
        flex-direction: column;
    }
    
    .drfz-time-slots {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .drfz-legend {
        flex-direction: column;
        align-items: center;
    }
}

@media (max-width: 480px) {
    .drfz-calendar-day {
        min-height: 70px;
        font-size: 0.9em;
    }
    
    .drfz-time-slots {
        grid-template-columns: 1fr;
    }
}

/* ==========================================================================
   Print Styles
   ========================================================================== */
@media print {
    .drfz-calendar-navigation,
    .drfz-form-actions,
    .drfz-booking-actions,
    .drfz-booking-mode-switcher {
        display: none !important;
    }
}