:root {
    --wa-green: #008069;
    --wa-green-light: #25d366;
    --wa-bg: #f0f2f5;
    --wa-white: #ffffff;
    --wa-text: #111b21;
    --wa-text-secondary: #667781;
    --wa-border: #e9edef;
    --wa-card-bg: #ffffff;
    --wa-hover: #f5f6f6;
    --wa-input-bg: #ffffff;
    --wa-teal: #005c4b;
    --wa-shadow: rgba(0, 0, 0, 0.1);
    --wa-modal-overlay: rgba(255, 255, 255, 0.85);
    --wa-red: rgb(212, 3, 3);
}

[data-theme="dark"] {
    --wa-bg: #111b21;
    --wa-white: #202c33;
    --wa-text: #e9edef;
    --wa-text-secondary: #8696a0;
    --wa-border: #222d34;
    --wa-card-bg: #202c33;
    --wa-hover: #2a3942;
    --wa-input-bg: #2a3942;
    --wa-green: #00221b;
    --wa-teal: #002b21;
    --wa-modal-overlay: rgba(11, 20, 26, 0.85);
    --wa-red: rgb(212, 3, 3);
}

html,
body {
    height: 100%;
    margin: 0;
    padding: 0;
}

body {
    background-color: var(--wa-bg);
    color: var(--wa-text);
    overflow: hidden;
    /* Prevent body-level scroll */
    transition: background-color 0.3s, color 0.3s;
    height: 100%;
}

/* Layout */
.app-container {
    display: flex;
    flex-direction: column;
    height: 100%;
    /* Fill the body height */
    max-width: 500px;
    margin: 0 auto;
    background: var(--wa-white);
    position: relative;
    box-shadow: 0 0 20px var(--wa-shadow);
    overflow: hidden;
}

@media (min-width: 900px) {
    .app-container {
        max-width: 800px;
    }
}

/* Header */
header {
    background-color: var(--wa-green);
    color: white;
    padding: 10px 15px;
    position: sticky;
    top: 0;
    z-index: 100;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.header-top {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

header h1 {
    font-size: 22px;
    font-weight: 600;
}

.header-actions {
    display: flex;
    gap: 15px;
}

.header-btn {
    background: none;
    border: none;
    color: white;
    cursor: pointer;
    font-size: 18px;
    padding: 5px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background 0.2s;
}

.header-btn:hover {
    background: rgba(255, 255, 255, 0.1);
}

.search-container-top {
    width: 100%;
}

.search-bar {
    background-color: var(--wa-white);
    border-radius: 20px;
    padding: 8px 15px;
    display: flex;
    align-items: center;
    gap: 10px;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
}

[data-theme="dark"] .search-bar {
    background-color: var(--wa-input-bg);
}

.search-bar input {
    background: none;
    border: none;
    width: 100%;
    outline: none;
    color: var(--wa-text);
    font-size: 15px;
}

/* Bulk Action Bar */
.bulk-action-bar {
    position: absolute;
    /* Changed to absolute to fit inside app container */
    bottom: 80px;
    left: 15px;
    right: 15px;
    background-color: var(--wa-green);
    color: white;
    padding: 15px 20px;
    border-radius: 12px;
    display: none;
    align-items: center;
    justify-content: space-between;
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.4);
    z-index: 150;
    animation: slideUp 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    /* Bouncy animation */
}

@keyframes slideUp {
    from {
        transform: translateY(100px);
        opacity: 0;
    }

    to {
        transform: translateY(0);
        opacity: 1;
    }
}

.bulk-close-btn {
    position: absolute;
    top: -8px;
    right: -8px;
    width: 24px;
    height: 24px;
    background: #dc3545;
    /* Red background for visibility */
    color: white;
    border: 2px solid white;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 16px;
    font-weight: bold;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.2);
    transition: transform 0.2s;
    padding: 0;
}

.bulk-close-btn:hover {
    transform: scale(1.1);
    background: #c82333;
}

.selected-count {
    font-weight: 600;
    font-size: 16px;
    white-space: nowrap;
}

.bulk-btns {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
    justify-content: flex-end;
}

.btn-bulk-clear,
.bulk-btns .btn {
    background: rgba(255, 255, 255, 0.15);
    /* Semi-transparent background */
    border: 1px solid rgba(255, 255, 255, 0.3);
    color: white;
    padding: 8px 14px;
    border-radius: 8px;
    font-size: 13px;
    cursor: pointer;
    white-space: nowrap;
    transition: background 0.2s;
    font-weight: 500;
}

.btn-bulk-clear:hover,
.bulk-btns .btn:hover {
    background: rgba(255, 255, 255, 0.25);
}

/* Mobile Responsive Adjustments for Bulk Bar */
@media (max-width: 600px) {
    .bulk-action-bar {
        bottom: 75px;
        flex-direction: column;
        gap: 12px;
        padding: 15px;
        align-items: stretch;
    }

    .selected-count {
        text-align: center;
        font-size: 14px;
        margin-bottom: 0;
        /* Gap handles spacing */
    }

    .bulk-btns {
        display: grid;
        grid-template-columns: 1fr 1fr;
        /* 2 columns */
        gap: 8px;
    }

    .btn-bulk-clear,
    .bulk-btns .btn {
        font-size: 12px;
        padding: 10px 5px;
        justify-content: center;
        text-align: center;
        width: 100%;
        height: auto;
    }
}

/* Tabs */
.bottom-tabs {
    display: flex;
    background-color: var(--wa-white);
    border-top: 1px solid var(--wa-border);
    padding: 10px 0;
    padding-bottom: calc(10px + env(safe-area-inset-bottom, 0px));
    width: 100%;
    z-index: 100;
    flex-shrink: 0;
    /* Don't allow tabs to shrink */
}

.tab {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 4px;
    cursor: pointer;
    color: var(--wa-text-secondary);
}

.tab.active {
    color: var(--wa-green);
}

.tab-icon {
    font-size: 20px;
}

.tab-label {
    font-size: 11px;
    font-weight: 500;
}

.tab-icon svg {
    transition: transform 0.2s;
}

.tab.active .tab-icon svg {
    transform: scale(1.1);
}

/* Main Content */
main {
    flex: 1;
    overflow-y: auto;
    overflow-x: hidden;
    background-color: var(--wa-bg);
    padding-bottom: 20px;
}

.tab-content {
    display: none;
}

.tab-content.active {
    display: block;
}

/* FAB */
.fab {
    position: absolute;
    /* Relative to app-container */
    bottom: calc(75px + env(safe-area-inset-bottom, 0px));
    right: 20px;
    width: 56px;
    height: 56px;
    background-color: var(--wa-green-light);
    border-radius: 16px;
    /* Squircle style */
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 30px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.25);
    cursor: pointer;
    border: none;
    z-index: 95;
    /* Above everything except modals */
    transition: transform 0.2s, background-color 0.2s, box-shadow 0.2s;
}

.fab:hover {
    transform: translateY(-2px);
    background-color: #1ebe57;
    box-shadow: 0 6px 16px rgba(0, 0, 0, 0.3);
}

/* Dropdown Menu */
.dropdown {
    position: relative;
    display: inline-block;
}

.dropdown-content {
    display: none;
    position: absolute;
    right: 0;
    background-color: var(--wa-white);
    min-width: 180px;
    box-shadow: 0 8px 16px rgba(0, 0, 0, 0.2);
    z-index: 1001;
    border-radius: 8px;
    padding: 8px 0;
    overflow: hidden;
}

.dropdown-content button {
    width: 100%;
    text-align: left;
    padding: 12px 16px;
    background: none;
    border: none;
    color: var(--wa-text);
    font-size: 14px;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 10px;
}

.dropdown-content button:hover {
    background-color: var(--wa-hover);
}

.show {
    display: block;
}

/* Avatar Gallery */
.avatar-gallery {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 10px;
    margin-top: 15px;
    max-height: 250px;
    overflow-y: auto;
    padding: 10px;
    background-color: var(--wa-bg);
    border-radius: 8px;
}

.avatar-item {
    width: 100%;
    aspect-ratio: 1;
    border-radius: 50%;
    cursor: pointer;
    border: 2px solid transparent;
    transition: border-color 0.2s;
}

.avatar-item.selected {
    border-color: var(--wa-green);
}

.upload-label {
    display: inline-block;
    margin-top: 10px;
    background-color: var(--wa-hover);
    padding: 8px 12px;
    border-radius: 4px;
    cursor: pointer;
    font-size: 13px;
    color: var(--wa-green);
    font-weight: 500;
}

/* Contacts List */
.search-container {
    padding: 10px 15px;
    background-color: var(--wa-white);
    position: sticky;
    top: 0;
    z-index: 50;
}

/* Status Filters */
.status-filters {
    display: flex;
    overflow-x: auto;
    overflow-y: hidden;
    width: 100%;
    padding: 12px 15px;
    gap: 10px;
    background-color: var(--wa-white);
    border-bottom: 1px solid var(--wa-border);
    position: sticky;
    top: 0;
    z-index: 60;
    flex-wrap: nowrap;
    /* Prevent wrapping */
    /* Smooth scrolling on iOS */
    scrollbar-width: none;
    /* Hide scrollbar for Firefox */
    -ms-overflow-style: none;
    /* Hide scrollbar for IE/Edge */
}

/* Hide Scrollbar for Chrome/Safari/Edge */
.status-filters::-webkit-scrollbar {
    display: none;
}

.filter-btn {
    white-space: nowrap;
    padding: 6px 16px;
    border-radius: 20px;
    border: 1px solid var(--wa-border);
    background-color: var(--wa-hover);
    color: var(--wa-text-secondary);
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s;
    flex-shrink: 0;
    /* Prevent shrinking during scroll */
}

.filter-btn.active {
    background-color: var(--wa-green-light);
    color: white;
    border-color: var(--wa-green-light);
}

.filter-btn:hover:not(.active) {
    background-color: var(--wa-border);
}

.filter-separator {
    width: 1px;
    height: 18px;
    background: var(--wa-border);
    margin: 0 5px;
    align-self: center;
    flex-shrink: 0;
    /* Prevent shrinking during scroll */
}

.sort-btn {
    white-space: nowrap;
    padding: 6px 12px;
    border-radius: 20px;
    border: 1px solid var(--wa-border);
    background-color: transparent;
    color: var(--wa-text-secondary);
    font-size: 13px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
    display: flex;
    align-items: center;
    gap: 4px;
    flex-shrink: 0;
    /* Push to right */
}

.sort-btn:hover {
    background-color: var(--wa-hover);
    border-color: var(--wa-green);
}

.contact-card {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 15px;
    border-bottom: 1px solid var(--wa-border);
    cursor: pointer;
    transition: background 0.2s;
    position: relative;
    min-height: 72px;
}

.contact-selection {
    flex-shrink: 0;
    display: flex;
    align-items: center;
}

.contact-checkbox {
    width: 20px;
    height: 20px;
    accent-color: var(--wa-green);
    cursor: pointer;
}

.contact-card:hover {
    background-color: var(--wa-hover);
}

.contact-img {
    width: 50px;
    height: 50px;
    min-width: 50px;
    min-height: 50px;
    border-radius: 50%;
    background-color: #dfe5e7;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    position: relative;
    flex-shrink: 0;
}

.completed-check {
    position: absolute;
    bottom: -2px;
    right: -2px;
    background-color: var(--wa-green-light);
    border: 2px solid var(--wa-white);
    border-radius: 50%;
    width: 18px;
    height: 18px;
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 2;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.contact-card.completed {
    background-color: rgba(37, 211, 102, 0.05);
}

[data-theme="dark"] .contact-card.completed {
    background-color: rgba(37, 211, 102, 0.1);
}

.contact-card.completed .contact-name {
    color: var(--wa-green);
}

.contact-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: 50%;
}

.contact-info {
    flex: 1;
    min-width: 0;
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.contact-name {
    font-weight: 500;
    font-size: 16px;
    color: var(--wa-text);
    line-height: 1.3;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.contact-phone {
    font-size: 13px;
    color: var(--wa-text);
    line-height: 1.3;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.contact-schedule {
    font-size: 11px;
    color: var(--wa-text-secondary);
    line-height: 1.3;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.contact-actions {
    display: flex;
    gap: 0px;
    flex-shrink: 0;
    align-items: center;
}

.action-btn {
    background: none;
    border: none;
    color: var(--wa-green);
    cursor: pointer;
    padding: 5px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background 0.2s, color 0.2s;
    flex-shrink: 0;
}

.action-btn:hover {
    background: var(--wa-border);
    color: var(--wa-green-light);
}

.action-btn svg {
    display: block;
}

/* Modals */
.modal-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--wa-modal-overlay);
    z-index: 2000;
    align-items: center;
    justify-content: center;
}

.modal {
    background: var(--wa-white);
    padding: 25px;
    border-radius: 12px;
    width: 90%;
    max-width: 400px;
    max-height: 90vh;
    overflow-y: auto;
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.2);
}

.modal h2 {
    margin-bottom: 20px;
    font-size: 18px;
}

.form-group {
    margin-bottom: 15px;
}

.form-group label {
    display: block;
    font-size: 14px;
    color: var(--wa-text-secondary);
    margin-bottom: 5px;
}

.form-group input,
.form-group select {
    width: 100%;
    padding: 10px;
    border: 1px solid var(--wa-border);
    border-radius: 4px;
    background: var(--wa-input-bg);
    color: var(--wa-text);
    outline-color: var(--wa-green);
}

.modal-btns {
    display: flex;
    justify-content: flex-end;
    gap: 10px;
    margin-top: 20px;
}

.btn {
    padding: 8px 16px;
    border-radius: 4px;
    border: none;
    cursor: pointer;
    font-weight: 600;
    text-transform: uppercase;
}

.btn-cancel {
    background: none;
    color: var(--wa-green);
}

.btn-confirm {
    background-color: var(--wa-green);
    color: white;
}

.btn-add-small {
    background-color: transparent;
    border: 1px solid var(--wa-green);
    color: var(--wa-green);
    padding: 4px 10px;
    border-radius: 4px;
    font-size: 12px;
    cursor: pointer;
    font-weight: 500;
    transition: all 0.2s;
}

.btn-add-small:hover {
    background-color: var(--wa-green);
    color: white;
}

/* Icons (using emojis for simplicity, could use FontAwesome or SVG) */
.icon {
    font-style: normal;
}

/* Preset Messages Section */
.preset-messages-section {
    margin-bottom: 20px;
    padding-bottom: 15px;
    border-bottom: 1px solid var(--wa-border);
}

.btn-add-preset {
    background: var(--wa-green);
    border: none;
    color: white;
    padding: 6px;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background 0.2s;
}

.btn-add-preset:hover {
    background: var(--wa-teal);
}

.preset-messages-container {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    max-height: 150px;
    overflow-y: auto;
    padding: 5px 0;
}

.preset-message-card {
    position: relative;
    background: var(--wa-hover);
    border: 1px solid var(--wa-border);
    border-radius: 8px;
    padding: 8px 24px 8px 10px;
    font-size: 13px;
    color: var(--wa-text);
    cursor: pointer;
    transition: all 0.2s;
    max-width: 100%;
    word-break: break-word;
}

.preset-message-card:hover {
    background: var(--wa-border);
    border-color: var(--wa-green);
}

.preset-remove-btn {
    position: absolute;
    top: -4px;
    right: -4px;
    background: #dc3545;
    border: 2px solid var(--wa-white);
    color: white;
    width: 18px;
    height: 18px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 12px;
    font-weight: bold;
    cursor: pointer;
    transition: background 0.2s;
    padding: 0;
    line-height: 1;
}

.preset-remove-btn:hover {
    background: #bb2d3b;
}

.preset-messages-container:empty::before {
    content: 'No presets yet. Click + to add one.';
    color: var(--wa-text-secondary);
    font-size: 12px;
    font-style: italic;
}

/* Manage Tab Styles */
.manage-list-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 10px 15px;
    border-bottom: 1px solid var(--wa-border);
    cursor: pointer;
}

.manage-list-item:hover {
    background-color: var(--wa-hover);
}

.manage-tag {
    font-size: 11px;
    padding: 2px 8px;
    border-radius: 10px;
    background: var(--wa-border);
    color: var(--wa-text-secondary);
    margin-left: auto;
    font-weight: 500;
}

.manage-tag.included {
    background: var(--wa-green-light);
    color: white;
}