/* --- THEME ENGINE --- */
:root {
    /* DEFAULT (DARK) VARIABLES */
    --bg-color: #000000;
    --text-color: #ffffff;
    --text-subtle: #888888;
    
    --card-bg: #111111;
    --card-border: #333333;
    --card-hover: #161616;
    --card-shadow: rgba(255, 255, 255, 0.1);
    
    --input-bg: #111111;
    --input-border: #444444;
    --input-focus: #1a1a1a;
    
    --btn-bg: #000000;
    --btn-border: #555555;
    --btn-text: #aaaaaa;
    
    --btn-save-bg: #333333; 
    --btn-save-text: #ffffff;
    
    --accent-color: #e82127; 
    
    --edit-bg: #1a0000;
    --edit-border: #552222;
    
    --scroll-track: #111;
    --scroll-thumb: #333;
    --scroll-thumb-hover: #555;
    
    --modal-bg: #111;
    --modal-overlay: rgba(0,0,0,0.85);
    
    --toast-bg: #333;
    --toast-text: #fff;
}

[data-theme="light"] {
    --bg-color: #f2f2f6; 
    --text-color: #1c1c1e;
    --text-subtle: #6c6c70;
    
    --card-bg: #f9f9f9; 
    --card-border: #777777; 
    --card-hover: #ffffff;
    --card-shadow: rgba(0, 0, 0, 0.15);
    
    --input-bg: #ffffff;
    --input-border: #777777;
    --input-focus: #f2f2f2;
    
    --btn-bg: #ffffff;
    --btn-border: #777777;
    --btn-text: #555555;

    --btn-save-bg: #444444; 
    --btn-save-text: #ffffff;
    
    --accent-color: #007aff; 
    
    --edit-bg: #ffe5e5;
    --edit-border: #ff3333;
    
    --scroll-track: #e5e5e5;
    --scroll-thumb: #bbb;
    --scroll-thumb-hover: #999;
    
    --modal-bg: #fff;
    --modal-overlay: rgba(255,255,255,0.85);
    
    --toast-bg: #fff;
    --toast-text: #000;
}

/* --- RESET & LAYOUT --- */
* { box-sizing: border-box; margin: 0; padding: 0; }

body {
    background-color: var(--bg-color);
    color: var(--text-color);
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    display: flex;
    flex-direction: column;
    align-items: center;
    min-height: 100vh;
    padding: 40px 20px;
    overscroll-behavior: none;
    user-select: none; 
    -webkit-user-select: none;
    transition: background-color 0.3s ease, color 0.3s ease;
    position: relative; 
}

/* --- THEME OVERLAY (Absolute Top Right) --- */
.theme-overlay {
    position: absolute;
    top: 20px;
    right: 20px;
    z-index: 100;
    display: flex;       
    align-items: center; 
    gap: 10px;           
}

.theme-label {
    font-size: 10px;
    font-weight: bold;
    letter-spacing: 1px;
    color: var(--text-subtle);
    text-transform: uppercase;
    pointer-events: none; 
    transition: color 0.3s;
}

.btn-mini {
    background: var(--btn-bg); 
    border: 1px solid var(--btn-border); 
    color: var(--btn-text); 
    font-size: 12px;
    height: 40px;
    border-radius: 20px;
    cursor: pointer;
    transition: all 0.2s;
    text-transform: uppercase;
    letter-spacing: 1px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.btn-auth { padding: 0 20px; min-width: 90px; }

.btn-theme { width: 40px; padding: 0; }
.btn-theme svg { width: 18px; height: 18px; fill: var(--btn-text); transition: fill 0.2s; }
.btn-theme:hover svg { fill: var(--text-color); }
.btn-mini:hover { border-color: var(--text-subtle); color: var(--text-color); }

/* --- HEADER SECTION --- */
.header-container {
    margin-bottom: 30px;
    text-align: center;
    position: relative;
    width: 100%;
    max-width: 600px;
}

.auth-btn-container {
    position: absolute;
    top: 5px;
    right: 0;
    z-index: 50;
}

h1 {
    font-weight: 200;
    letter-spacing: 2px;
    text-transform: uppercase;
    font-size: 2.2rem;
    color: var(--text-color); 
    margin: 0;
    line-height: 1;
    transition: color 0.3s;
}

.subtitle {
    display: block;
    font-size: 0.9rem;
    color: #ff333a; 
    letter-spacing: 1px;
    margin-top: 5px;
    text-transform: uppercase;
    font-weight: 600;
}

/* --- SCROLLBAR --- */
::-webkit-scrollbar { width: 8px; height: 8px; }
::-webkit-scrollbar-track { background: var(--scroll-track); }
::-webkit-scrollbar-thumb { background: var(--scroll-thumb); border-radius: 4px; }
::-webkit-scrollbar-thumb:hover { background: var(--scroll-thumb-hover); }

/* --- DISCLAIMER --- */
.disclaimer-banner {
    background: rgba(33, 150, 243, 0.15); 
    border: 1px solid rgba(33, 150, 243, 0.5); 
    border-radius: 8px;
    padding: 12px 20px;
    max-width: 600px;
    width: 100%;
    margin-bottom: 30px;
    display: none; 
    align-items: center;
    gap: 15px;
    position: relative;
}
.disclaimer-banner p { font-size: 0.85rem; color: var(--text-color); line-height: 1.4; margin: 0; padding-right: 40px; opacity: 0.9; }
.btn-disclaimer-ok {
    background: #2196f3; color: white; border: none; padding: 4px 10px;
    border-radius: 4px; font-size: 11px; font-weight: bold; cursor: pointer;
    position: absolute; right: 15px; text-transform: uppercase;
}

/* --- WARNING MODE (Firewall) --- */
.warning-mode {
    background: rgba(232, 229, 33, 0.15); /* Yellow tint */
    border-color: rgba(232, 212, 33, 0.5);
}

.warning-mode .btn-disclaimer-ok {
    background: #dd9715; 
}

/* --- CONTROL PANEL --- */
.control-panel {
    display: flex;
    flex-direction: column;
    gap: 15px;
    width: 100%;
    max-width: 600px;
    margin-bottom: 50px;
}

.input-row { display: flex; gap: 10px; width: 100%; }

input {
    background: var(--input-bg);
    border: 1px solid var(--input-border); 
    padding: 15px 20px;
    border-radius: 8px;
    color: var(--text-color);
    font-size: 16px;
    outline: none;
    transition: all 0.3s;
}

input:focus { border-color: var(--text-subtle); background: var(--input-focus); }
#urlInput { flex: 2; }
#nameInput { flex: 1; }

.button-row { display: flex; gap: 10px; justify-content: center; width: 100%; }

button.action-btn {
    border: none;
    padding: 0 25px;
    border-radius: 8px;
    font-weight: bold;
    cursor: pointer;
    transition: transform 0.1s, opacity 0.2s, background-color 0.2s;
    font-size: 14px;
    white-space: nowrap;
    height: 45px;
    flex: 1;
}
button.action-btn:active { transform: scale(0.96); }

button.btn-save { 
    background: var(--btn-save-bg); 
    color: var(--btn-save-text); 
    flex: 1.5; 
}
button.btn-save:hover { opacity: 0.9; }
button.btn-save:disabled { opacity: 0.6; cursor: not-allowed; }

button.btn-go { background: transparent; border: 1px solid var(--btn-border); color: var(--btn-text); }
button.btn-go:hover { border-color: var(--text-color); color: var(--text-color); }

button.btn-manage { background: transparent; color: var(--btn-text); border: 1px dashed var(--btn-border); }
button.btn-manage:hover { border-color: var(--text-subtle); color: var(--text-color); }

button.btn-manage.active {
    background: #e82127;
    color: white;
    border-style: solid;
    border-color: #e82127;
}

/* --- THE GRID AREA --- */
.grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(175px, 1fr));
    gap: 30px;
    width: 100%;
    max-width: 1000px;
    margin-bottom: 60px;
}

.bookmark-card {
    background: var(--card-bg);
    border: 1px solid var(--card-border); 
    border-radius: 12px;
    padding: 20px;
    text-decoration: none;
    color: var(--text-color);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    transition: transform 0.2s ease, box-shadow 0.2s, background-color 0.3s; 
    position: relative;
    height: 170px;
    -webkit-touch-callout: none; 
    user-select: none;
}

.bookmark-card:hover {
    background: var(--card-hover);
    transform: translateY(-5px);
    border-color: var(--text-subtle); 
    box-shadow: 0 10px 20px var(--card-shadow);
}

.grid.edit-mode .bookmark-card {
    border-color: var(--edit-border);
    background: var(--edit-bg);
    cursor: default;
    will-change: transform; 
}

.sortable-ghost { opacity: 0.2; background: #2196f3; }
.sortable-drag {
    cursor: grabbing;
    opacity: 1;
    background: var(--card-bg);
    box-shadow: 0 20px 40px rgba(0,0,0,0.5);
    transform: scale(1.05);
    z-index: 100;
}
.sortable-chosen { background: var(--card-hover); }

.bookmark-card img { width: 56px; height: 56px; margin-bottom: 15px; border-radius: 8px; pointer-events: none; }
.bookmark-card span { font-size: 15px; text-align: center; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; width: 100%; opacity: 0.9; pointer-events: none; }

.card-btn {
    position: absolute;
    background: var(--btn-bg);
    color: var(--text-color);
    width: 38px;
    height: 38px;
    border-radius: 50%;
    display: none; 
    border: 2px solid var(--btn-border);
    z-index: 10;
    font-weight: bold;
    cursor: pointer;
    box-shadow: 0 4px 10px rgba(0,0,0,0.3);
    align-items: center;
    justify-content: center;
    padding: 0;
    line-height: 1;
}

.grid.edit-mode .card-btn { display: flex; }

.delete-btn { top: -12px; right: -12px; border-color: #ff4444; color: #ff4444; font-size: 20px; }
.delete-btn:hover { background: #ff4444; color: #fff; border-color: #ff4444; }

.edit-btn { top: -12px; left: -12px; }
.edit-btn svg { width: 16px; height: 16px; color: var(--text-color); }
.edit-btn:hover { background: var(--text-color); border-color: var(--text-color); }
.edit-btn:hover svg { color: var(--bg-color); }

.move-btn { bottom: -12px; font-size: 24px; color: var(--text-subtle); }
.move-left-btn { left: -12px; }
.move-right-btn { right: -12px; }
.move-btn:hover { color: var(--text-color); border-color: var(--text-color); }

/* --- SUGGESTIONS --- */
.suggestion-container {
    width: 100%;
    max-width: 400px;
    text-align: center;
    border-top: 1px solid var(--card-border);
    padding-top: 30px;
    margin-top: auto; 
}

.suggestion-header {
    display: flex;
    flex-direction: column; 
    align-items: center;    
    justify-content: center;
    gap: 5px; 
    margin-bottom: 15px;
}

.suggestion-title {
    font-size: 13px;
    text-transform: uppercase;
    letter-spacing: 2px;
    color: var(--text-subtle); 
    margin: 0;
    line-height: 1;
}

.btn-toggle-suggestions {
    background: transparent;
    border: none;
    color: var(--text-subtle); 
    font-size: 11px; 
    font-weight: bold;
    padding: 0;
    cursor: pointer;
    text-transform: uppercase;
    letter-spacing: 1px;
    transition: color 0.2s;
}
.btn-toggle-suggestions:hover { color: var(--text-color); }

.suggestion-wrapper {
    position: relative;
    opacity: 0;
    transform: translateY(10px);
    transition: opacity 0.5s ease, transform 0.5s ease;
}
.suggestion-wrapper.visible { opacity: 1; transform: translateY(0); }

.suggestion-card {
    background: var(--card-bg);
    border: 1px dashed var(--card-border); 
    border-radius: 12px;
    padding: 15px;
    display: flex;
    align-items: center;
    gap: 15px;
    text-decoration: none;
    color: var(--text-color);
    transition: all 0.2s;
    padding-right: 50px;
}

.suggestion-card img { width: 32px; height: 32px; border-radius: 4px; }
.suggestion-text { display: flex; flex-direction: column; align-items: flex-start; }
.suggestion-name { font-size: 14px; font-weight: bold; color: var(--text-color); }
.suggestion-url { font-size: 11px; color: var(--text-subtle); }

.suggestion-add-btn {
    position: absolute;
    right: 15px;
    top: 50%;
    transform: translateY(-50%);
    width: 30px;
    height: 30px;
    font-size: 18px;
    border-radius: 50%;
    background: var(--input-bg);
    border: 1px solid var(--input-border);
    color: var(--text-subtle);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    z-index: 10;
    transition: all 0.2s;
    padding: 0;
}

.suggestion-add-btn::after {
    content: '';
    position: absolute;
    top: -15px;
    bottom: -15px;
    left: -15px;
    right: -15px;
}

.suggestion-add-btn:hover { background: var(--text-color); color: var(--bg-color); border-color: var(--text-color); }

/* --- MODAL --- */
.modal-overlay {
    display:none; position:fixed; top:0; left:0; width:100%; height:100%; 
    background: var(--modal-overlay); z-index:1000; 
    align-items:center; justify-content:center; backdrop-filter: blur(5px);
}

.modal-box {
    background: var(--modal-bg); 
    padding:30px; border-radius:12px; border:1px solid var(--card-border); 
    max-width:320px; width:100%; text-align:center;
    box-shadow: 0 20px 50px rgba(0,0,0,0.5);
}

.modal-input {
    width: 100%; margin-bottom: 12px; background: var(--input-bg);
    border: 1px solid var(--input-border); color: var(--text-color); padding: 10px;
}

/* --- HELP LIST STYLES --- */
.help-list {
    text-align: left;
    list-style: none; /* Removed default bullets to control spacing */
    margin: 0 0 20px 0;
    padding: 0;
}

.help-list li {
    margin-bottom: 15px;
    font-size: 18px; /* Increased from 14px */
    line-height: 1.6; /* Increased line-height */
    color: var(--text-color);
    padding-left: 0;
}

.help-list strong {
    color: var(--text-color);
    font-weight: 700;
}

/* --- FOOTER --- */
.footer-version {
    margin-top: 20px; font-size: 11px; color: var(--text-subtle); 
    text-align: center; width: 100%; font-family: monospace;
    line-height: 1.6;
}

.footer-version a {
    color: var(--text-subtle);
    text-decoration: underline;
    transition: color 0.2s;
}
.footer-version a:hover {
    color: var(--text-color);
}

/* --- TOAST NOTIFICATIONS --- */
.toast-container {
    position: fixed;
    bottom: 20px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 2000;
    display: flex;
    flex-direction: column;
    gap: 10px;
    pointer-events: none;
}

.toast {
    background-color: var(--toast-bg);
    color: var(--toast-text);
    padding: 12px 24px;
    border-radius: 50px;
    font-size: 14px;
    font-weight: 600;
    box-shadow: 0 4px 12px rgba(0,0,0,0.3);
    opacity: 0;
    transform: translateY(20px);
    transition: all 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    border: 1px solid var(--card-border);
    text-align: center;
}

.toast.visible {
    opacity: 1;
    transform: translateY(0);
}

@media (max-width: 600px) {
    .input-row { flex-direction: column; }
    #urlInput, #nameInput { width: 100%; }
    .header-container { margin-top: 30px; }
    
    .auth-btn-container { 
        position: relative; 
        top: auto; 
        right: auto; 
        margin-bottom: 20px; 
        display: flex;
        justify-content: flex-end;
    }
    
    .grid { grid-template-columns: repeat(auto-fill, minmax(140px, 1fr)); }
}