/* --- Global Variables & Base Styles --- */
:root {
    /* Colors - Inspired by modern, slightly muted palette */
    --ui-success: #4CAF50;   /* Green: rgb(76, 175, 80) */
    --ui-success-rgb: 76, 175, 80; /* Thêm biến RGB */

    --ui-error: #F44336;     /* Red: rgb(244, 67, 54) */
    --ui-error-rgb: 244, 67, 54; /* Thêm biến RGB */

    --ui-warning: #FFC107;   /* Amber: rgb(255, 193, 7) */
    --ui-warning-rgb: 255, 193, 7; /* Thêm biến RGB */

    --ui-info: #2196F3;      /* Blue: rgb(33, 150, 243) */
    --ui-info-rgb: 33, 150, 243; /* Thêm biến RGB */

    --ui-primary-text: #333;
    --ui-secondary-text: #666;
    --ui-light-text: #fff;
    --ui-bg-light: rgba(255, 255, 255, 0.95); /* Slightly transparent white for glass effect */
    --ui-bg-dark-overlay: rgba(0, 0, 0, 0.6); /* Darker overlay for modals */
    --ui-border-light: rgba(0, 0, 0, 0.1);
    --ui-shadow-soft: 0 4px 12px rgba(0, 0, 0, 0.15);
    --ui-shadow-deep: 0 8px 24px rgba(0, 0, 0, 0.25);

    /* Spacing */
    --ui-gap-sm: 8px;
    --ui-gap-md: 16px;
    --ui-gap-lg: 24px;

    /* Border Radii */
    --ui-radius-sm: 6px;
    --ui-radius-md: 12px;
    --ui-radius-lg: 24px; /* For more unique shapes */

    /* Z-index */
    --ui-z-notification: 9999;
    --ui-z-modal-backdrop: 10000;
    --ui-z-modal: 10001;

    /* Fonts (Example - you'd link via @font-face) */
    --ui-font-family: 'Segoe UI', 'Roboto', 'Helvetica Neue', Arial, sans-serif;
}

body {
    font-family: var(--ui-font-family);
    color: var(--ui-primary-text);
}

/* Base Icon Styles */
.ui-icon-base {
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5em; /* Slightly larger icons */
    flex-shrink: 0;
}
.ui-icon-base svg {
    width: 1em;
    height: 1em;
    filter: drop-shadow(0px 0px 3px rgba(0,0,0,0.1)); /* Subtle shadow for icons */
}

/* --- Notification Styles --- */
.ui-notification-container {
    position: fixed;
    z-index: var(--ui-z-notification);
    display: flex;
    flex-direction: column;
    pointer-events: none; /* Allow clicks through container */
}

/* Position adjustments - slightly more margin */
.ui-notification-container.top-left { top: var(--ui-gap-lg); left: var(--ui-gap-lg); align-items: flex-start; }
.ui-notification-container.top-right { top: var(--ui-gap-lg); right: var(--ui-gap-lg); align-items: flex-end; }
.ui-notification-container.bottom-left { bottom: var(--ui-gap-lg); left: var(--ui-gap-lg); align-items: flex-start; }
.ui-notification-container.bottom-right { bottom: var(--ui-gap-lg); right: var(--ui-gap-lg); align-items: flex-end; }


.ui-notification-wrapper {
    background-color: var(--ui-bg-light);
    /* Glassmorphism/Asymmetrical Borders */
    border-radius: var(--ui-radius-md) var(--ui-radius-lg) var(--ui-radius-md) var(--ui-radius-sm); /* Unique shape */
    backdrop-filter: blur(8px); /* Glass effect */
    -webkit-backdrop-filter: blur(8px); /* Safari compatibility */
    box-shadow: var(--ui-shadow-soft); /* Soft shadow */
    overflow: hidden; /* For progress bar and smooth content transition */

    padding: var(--ui-gap-md);
    margin-bottom: var(--ui-gap-sm);
    display: flex;
    align-items: flex-start; /* Align icon/title to top */
    width: 320px; /* Slightly adjusted width */
    max-width: calc(100vw - var(--ui-gap-lg) * 2);
    box-sizing: border-box;
    pointer-events: auto; /* Allow interaction with content */

    /* Custom Entry/Exit Animation */
    opacity: 0;
    transform: translateX(100px) scale(0.8); /* Start off-screen, smaller */
    transform-origin: top right; /* For right-aligned notifications */
    transition: all 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94); /* Smooth, slightly elastic entry */
    position: relative; /* For progress bar */
    border: 1px solid rgba(255, 255, 255, 0.2); /* Subtle white border for glass effect */

    /* Glow Effect (using pseudo-element for a subtle outer glow based on type) */
    &::before { /* Note: This is SCSS/LESS syntax for nesting. For plain CSS, remove &::before and use .ui-notification-wrapper::before */
        content: '';
        position: absolute;
        top: -2px; left: -2px; right: -2px; bottom: -2px;
        z-index: -1;
        border-radius: inherit; /* Inherit rounded corners */
        /* FIX: Using rgba with rgb variables for the glow effect */
        background: radial-gradient(circle at center, transparent 0%, transparent 70%, rgba(var(--ui-info-rgb), 0.5) 100%); /* Default to info glow */
        background-size: 200% 200%;
        opacity: 0.3;
        filter: blur(8px); /* Soft glow */
        pointer-events: none;
        transition: opacity 0.3s ease;
    }
}

/* Adjust transform origin for left-aligned notifications */
.ui-notification-container.top-left .ui-notification-wrapper,
.ui-notification-container.bottom-left .ui-notification-wrapper {
    transform-origin: top left;
    transform: translateX(-100px) scale(0.8);
}


.ui-notification-wrapper.show {
    opacity: 1;
    transform: translateX(0) scale(1);
}

.ui-notification-wrapper.hide {
    opacity: 0;
    transform: translateX(100px) scale(0.8); /* Slide out to the right */
    margin-bottom: 0;
    padding-top: 0;
    padding-bottom: 0;
    height: 0; /* Collapse height */
    min-height: 0; /* Ensure it collapses */
    overflow: hidden;
    transition: all 0.4s cubic-bezier(0.55, 0.055, 0.675, 0.19); /* Quicker, sharper exit */
}
.ui-notification-container.top-left .ui-notification-wrapper.hide,
.ui-notification-container.bottom-left .ui-notification-wrapper.hide {
    transform: translateX(-100px) scale(0.8); /* Slide out to the left for left positions */
}

/* Icon Animation & Position */
.ui-notification-wrapper > .ui-notification-icon {
    margin-right: var(--ui-gap-sm);
    position: relative;
    top: -2px; /* Slightly raise icon for better vertical alignment with text */
}
/* Micro-animation for icons on show */
.ui-notification-wrapper.show > .ui-notification-icon {
    animation: iconBounce 0.6s ease-out;
}
@keyframes iconBounce {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-3px); }
}

.ui-notification-wrapper > .ui-notification-content {
    flex-grow: 1;
    display: flex;
    flex-direction: column;
}

.ui-notification-wrapper > .ui-notification-content > .ui-notification-title {
    font-weight: 600; /* Slightly bolder */
    font-size: 1rem; /* Base font size */
    line-height: 1.4;
    margin-bottom: 4px;
    color: var(--ui-primary-text);
}

.ui-notification-wrapper > .ui-notification-content > .ui-notification-message {
    font-size: 0.875rem; /* Smaller font for message */
    line-height: 1.5;
    color: var(--ui-secondary-text);
    word-wrap: break-word;
    /* For expandable notifications */
    max-height: 3em; /* Limit to 2 lines initially (assuming 1.5em line-height) */
    overflow: hidden;
    text-overflow: ellipsis; /* For non-expandable long messages */
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    transition: max-height 0.3s ease-out;
}
.ui-notification-wrapper.expanded .ui-notification-message {
    max-height: 150px; /* Expand to show more content */
    -webkit-line-clamp: unset;
}
.ui-notification-wrapper .ui-expand-btn {
    font-size: 0.8em;
    color: var(--ui-info);
    cursor: pointer;
    text-align: right;
    margin-top: 4px;
    display: none; /* Hide by default, JS will show if needed */
}

/* Custom Close Button */
.ui-notification-wrapper > .ui-notification-close-btn {
    position: absolute;
    top: var(--ui-gap-sm);
    right: var(--ui-gap-sm);
    width: 24px;
    height: 24px;
    border-radius: 50%; /* Circular button */
    background-color: transparent;
    border: none;
    font-size: 1.5rem; /* Larger 'x' */
    color: rgba(0, 0, 0, 0.45);
    cursor: pointer;
    transition: background-color 0.2s ease, color 0.2s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    line-height: 1;
}
.ui-notification-wrapper > .ui-notification-close-btn:hover {
    background-color: rgba(0, 0, 0, 0.05);
    color: rgba(0, 0, 0, 0.85);
}

/* Mini Progress Bar */
.ui-notification-wrapper .ui-progress-bar {
    position: absolute;
    bottom: 0;
    left: 0;
    height: 3px; /* Thin progress bar */
    width: 0%; /* Will be animated via JS */
    background-color: currentColor; /* Inherits color from type */
    transition: width linear; /* Animated by JS, this just ensures smooth visual */
    opacity: 0.7;
    border-radius: 0 0 var(--ui-radius-md) var(--ui-radius-sm); /* Matches notification shape */
}


/* Notification Type Colors */
/* FIX: Use rgba with rgb variables for the glow effect */
.ui-notification-wrapper.success::before { background: radial-gradient(circle at center, transparent 0%, transparent 70%, rgba(var(--ui-success-rgb), 0.5) 100%); }
.ui-notification-wrapper.success .ui-progress-bar { background-color: var(--ui-success); }
.ui-notification-wrapper.success .ui-notification-icon svg { fill: var(--ui-success); }

.ui-notification-wrapper.error::before { background: radial-gradient(circle at center, transparent 0%, transparent 70%, rgba(var(--ui-error-rgb), 0.5) 100%); }
.ui-notification-wrapper.error .ui-progress-bar { background-color: var(--ui-error); }
.ui-notification-wrapper.error .ui-notification-icon svg { fill: var(--ui-error); }

.ui-notification-wrapper.warning::before { background: radial-gradient(circle at center, transparent 0%, transparent 70%, rgba(var(--ui-warning-rgb), 0.5) 100%); }
.ui-notification-wrapper.warning .ui-progress-bar { background-color: var(--ui-warning); }
.ui-notification-wrapper.warning .ui-notification-icon svg { fill: var(--ui-warning); }

.ui-notification-wrapper.info::before { background: radial-gradient(circle at center, transparent 0%, transparent 70%, rgba(var(--ui-info-rgb), 0.5) 100%); }
.ui-notification-wrapper.info .ui-progress-bar { background-color: var(--ui-info); }
.ui-notification-wrapper.info .ui-notification-icon svg { fill: var(--ui-info); }


/* --- Modal Styles --- */
.ui-modal-backdrop {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: var(--ui-z-modal-backdrop);

    /* Gradient Backdrop */
    background: linear-gradient(45deg, var(--ui-bg-dark-overlay), rgba(0, 0, 0, 0.7));
    opacity: 0;
    transition: opacity 0.3s ease;
}

.ui-modal-backdrop.show {
    opacity: 1;
}

.ui-modal-wrapper {
    background-color: var(--ui-bg-light);
    border-radius: var(--ui-radius-md); /* Softer corners */
    box-shadow: var(--ui-shadow-deep); /* More pronounced shadow for depth */
    width: 500px; /* Slightly adjusted default width */
    max-width: calc(100% - var(--ui-gap-lg) * 2);
    max-height: calc(100% - var(--ui-gap-lg) * 2);
    display: flex;
    flex-direction: column;
    overflow: hidden;

    /* Float/Depth animation */
    transform: translateY(50px) scale(0.95); /* Start slightly off-center and smaller */
    opacity: 0;
    transition: transform 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94), opacity 0.4s ease-out; /* Smooth entry */
}

.ui-modal-backdrop.show .ui-modal-wrapper {
    transform: translateY(0) scale(1);
    opacity: 1;
}

.ui-modal-header {
    padding: var(--ui-gap-md) var(--ui-gap-lg);
    border-bottom: 1px solid var(--ui-border-light);
    font-size: 1.25rem; /* Larger header font */
    font-weight: 600;
    color: var(--ui-primary-text);
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: relative; /* For custom header elements if needed */
}

.ui-modal-header .ui-modal-close-btn {
    background: none;
    border: none;
    font-size: 2rem; /* Larger 'x' */
    cursor: pointer;
    color: rgba(0, 0, 0, 0.45);
    transition: color 0.2s ease, transform 0.2s ease;
    padding: 0;
    line-height: 1;
    border-radius: 50%; /* Circular hit area */
    width: 30px; height: 30px;
    display: flex; justify-content: center; align-items: center;
}
.ui-modal-header .ui-modal-close-btn:hover {
    color: var(--ui-error); /* Red on hover */
    transform: rotate(90deg); /* Rotate on hover */
}

.ui-modal-body {
    padding: var(--ui-gap-lg);
    font-size: 0.95rem;
    line-height: 1.6;
    word-wrap: break-word;
    flex-grow: 1;
    overflow-y: auto;
    color: var(--ui-secondary-text);
}

.ui-modal-footer {
    padding: var(--ui-gap-sm) var(--ui-gap-lg);
    border-top: 1px solid var(--ui-border-light);
    display: flex;
    justify-content: flex-end;
    gap: var(--ui-gap-sm);
    background-color: rgba(255, 255, 255, 0.8); /* Slightly less transparent footer */
}

.ui-modal-footer button {
    padding: 8px 20px;
    font-size: 0.9rem;
    border-radius: var(--ui-radius-sm);
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    font-weight: 500;
}

.ui-modal-footer .modal-ok-btn {
    background-color: var(--ui-info);
    color: var(--ui-light-text);
    border: 1px solid var(--ui-info);
    /* FIX: Using rgba with rgb variables for box-shadow */
    box-shadow: 0 2px 4px rgba(var(--ui-info-rgb), 0.3);
}
.ui-modal-footer .modal-ok-btn:hover {
    background-color: #1a78d0; /* Darker blue */
    border-color: #1a78d0;
    /* FIX: Using rgba with rgb variables for box-shadow */
    box-shadow: 0 3px 6px rgba(var(--ui-info-rgb), 0.4);
    transform: translateY(-1px); /* Subtle lift */
}

.ui-modal-footer .modal-cancel-btn {
    background-color: transparent;
    color: var(--ui-primary-text);
    border: 1px solid var(--ui-border-light);
}
.ui-modal-footer .modal-cancel-btn:hover {
    color: var(--ui-info);
    border-color: var(--ui-info);
    /* FIX: Using rgba with rgb variables for background-color */
    background-color: rgba(var(--ui-info-rgb), 0.05); /* Light blue background on hover */
}


/* --- Alert Styles --- */
.ui-alert-wrapper {
    position: relative;
    padding: var(--ui-gap-md);
    border: 1px solid transparent; /* Default transparent border */
    border-radius: var(--ui-radius-md); /* Softer corners for alert */
    display: flex;
    align-items: flex-start; /* Align content to the top */
    font-size: 0.95rem;
    line-height: 1.5;
    margin-bottom: var(--ui-gap-md);
    transition: all 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    opacity: 1;
    box-sizing: border-box;

    /* Subtle background pattern/texture (example) */
    background-image: radial-gradient(circle at 100% 100%, rgba(255,255,255,0.05) 1px, transparent 1px);
    background-size: 8px 8px;
    background-position: 0 0;
}

.ui-alert-wrapper.hide {
    opacity: 0;
    padding-top: 0;
    padding-bottom: 0;
    margin-top: 0;
    margin-bottom: 0;
    height: 0;
    min-height: 0;
    overflow: hidden;
}

.ui-alert-wrapper .ui-alert-icon {
    margin-right: var(--ui-gap-sm);
    padding-top: 2px;
}

.ui-alert-wrapper .ui-alert-content {
    flex-grow: 1;
    display: flex;
    flex-direction: column;
}

.ui-alert-wrapper .ui-alert-content .ui-alert-title {
    font-weight: 600;
    margin-bottom: 4px;
    color: var(--ui-primary-text);
}

.ui-alert-wrapper .ui-alert-content .ui-alert-message {
    color: var(--ui-secondary-text);
    /* For expandable alerts */
    max-height: 3em; /* Limit to 2 lines initially */
    overflow: hidden;
    text-overflow: ellipsis;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    transition: max-height 0.3s ease-out;
}
.ui-alert-wrapper.expanded .ui-alert-message {
    max-height: 150px; /* Expand to show more content */
    -webkit-line-clamp: unset;
}
.ui-alert-wrapper .ui-expand-btn {
    font-size: 0.8em;
    color: var(--ui-info);
    cursor: pointer;
    text-align: right;
    margin-top: 4px;
    display: none; /* Hide by default, JS will show if needed */
}

/* Custom Close Button for Alert */
.ui-alert-wrapper .ui-alert-close-btn {
    background: none;
    border: none;
    font-size: 1.2rem;
    cursor: pointer;
    color: rgba(0, 0, 0, 0.45);
    transition: color 0.2s ease, transform 0.2s ease;
    padding: 0;
    line-height: 1;
    position: absolute;
    top: var(--ui-gap-sm);
    right: var(--ui-gap-sm);
    border-radius: 50%;
    width: 24px; height: 24px;
    display: flex; justify-content: center; align-items: center;
}
.ui-alert-wrapper .ui-alert-close-btn:hover {
    color: var(--ui-error);
    transform: rotate(90deg);
}

/* Alert Type Colors and Backgrounds */
/* FIX: Using rgba with rgb variables for background-color */
.ui-alert-wrapper.success {
    background-color: rgba(var(--ui-success-rgb), 0.08); /* Light green tint */
    border-color: var(--ui-success);
    color: var(--ui-success);
}
.ui-alert-wrapper.success .ui-alert-icon svg { fill: var(--ui-success); }

.ui-alert-wrapper.error {
    background-color: rgba(var(--ui-error-rgb), 0.08);
    border-color: var(--ui-error);
    color: var(--ui-error);
}
.ui-alert-wrapper.error .ui-alert-icon svg { fill: var(--ui-error); }

.ui-alert-wrapper.warning {
    background-color: rgba(var(--ui-warning-rgb), 0.08);
    border-color: var(--ui-warning);
    color: var(--ui-warning);
}
.ui-alert-wrapper.warning .ui-alert-icon svg { fill: var(--ui-warning); }

.ui-alert-wrapper.info {
    background-color: rgba(var(--ui-info-rgb), 0.08);
    border-color: var(--ui-info);
    color: var(--ui-info);
}
.ui-alert-wrapper.info .ui-alert-icon svg { fill: var(--ui-info); }

/* Hide icon for alerts if showIcon is false */
.ui-alert-wrapper:not(.show-icon) .ui-alert-icon {
    display: none;
}
/* Adjust spacing if icon is not shown */
.ui-alert-wrapper:not(.show-icon) .ui-alert-content {
    margin-left: -12px; /* Pull content back if no icon */
}

/* General button styling */
.ui-modal-footer button,
.ui-alert-wrapper .ui-expand-btn {
    /* Basic button styles */
    font-family: var(--ui-font-family);
}