/* ═══════════════════════════════════════════════════════════════════════════
   Nexo — Design System v2
   Dark/Light theme with glassmorphism, cyan/teal accent
   ═══════════════════════════════════════════════════════════════════════════ */

/* ─── Google Font ─────────────────────────────────────────────────────────── */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&display=swap');

/* ─── CSS Variables: Dark Theme (default) ─────────────────────────────────── */
:root {
    --bg-primary:    #06060b;
    --bg-secondary:  #0d0d14;
    --bg-card:       rgba(255, 255, 255, 0.03);
    --bg-card-hover: rgba(255, 255, 255, 0.06);
    --bg-glass:      rgba(15, 15, 25, 0.7);
    --bg-input:      rgba(255, 255, 255, 0.05);
    --bg-input-focus:rgba(255, 255, 255, 0.08);
    --bg-header:     rgba(6, 6, 11, 0.85);

    --accent:            #00d4aa;
    --accent-light:      #00f0c0;
    --accent-dark:       #00a888;
    --accent-glow:       rgba(0, 212, 170, 0.15);
    --accent-glow-strong:rgba(0, 212, 170, 0.3);

    --text-primary:   #e8eaf0;
    --text-secondary: #8b8fa3;
    --text-muted:     #5a5e72;
    --text-accent:    #00d4aa;
    --text-on-accent: #000;

    --border:        rgba(255, 255, 255, 0.06);
    --border-hover:  rgba(255, 255, 255, 0.12);
    --border-accent: rgba(0, 212, 170, 0.3);

    --error:    #ff4d6a;
    --error-bg: rgba(255, 77, 106, 0.1);

    --success:    #00d4aa;
    --success-bg: rgba(0, 212, 170, 0.1);

    --orb1: rgba(0, 212, 170, 0.12);
    --orb2: rgba(0, 100, 200, 0.08);
    --orb3: rgba(120, 0, 255, 0.06);

    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    --shadow:    0 8px 32px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 16px 64px rgba(0, 0, 0, 0.5);
    --transition:0.25s cubic-bezier(0.4, 0, 0.2, 1);
    --font:      'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
}

/* ─── Light Theme ─────────────────────────────────────────────────────────── */
[data-theme="light"] {
    --bg-primary:    #f0f2f5;
    --bg-secondary:  #e8eaee;
    --bg-card:       rgba(255, 255, 255, 0.7);
    --bg-card-hover: rgba(255, 255, 255, 0.9);
    --bg-glass:      rgba(255, 255, 255, 0.65);
    --bg-input:      rgba(0, 0, 0, 0.04);
    --bg-input-focus:rgba(0, 0, 0, 0.06);
    --bg-header:     rgba(240, 242, 245, 0.9);

    --text-primary:   #1a1a2e;
    --text-secondary: #555770;
    --text-muted:     #8b8fa3;
    --text-accent:    #00997a;
    --text-on-accent: #000;

    --border:        rgba(0, 0, 0, 0.08);
    --border-hover:  rgba(0, 0, 0, 0.14);
    --border-accent: rgba(0, 168, 136, 0.35);

    --error:    #e0334e;
    --error-bg: rgba(224, 51, 78, 0.08);

    --success:    #00997a;
    --success-bg: rgba(0, 153, 122, 0.08);

    --orb1: rgba(0, 212, 170, 0.08);
    --orb2: rgba(0, 100, 200, 0.05);
    --orb3: rgba(120, 0, 255, 0.04);

    --shadow:    0 8px 32px rgba(0, 0, 0, 0.08);
    --shadow-lg: 0 16px 64px rgba(0, 0, 0, 0.1);

    --accent:             #00b894;
    --accent-light:       #00d4aa;
    --accent-dark:        #00997a;
    --accent-glow:        rgba(0, 184, 148, 0.12);
    --accent-glow-strong: rgba(0, 184, 148, 0.2);
}

/* ─── Reset ───────────────────────────────────────────────────────────────── */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }

html { font-size: 16px; scroll-behavior: smooth; }

body {
    font-family: var(--font);
    background: var(--bg-primary);
    color: var(--text-primary);
    min-height: 100vh;
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
    transition: background 0.4s ease, color 0.3s ease;
}

/* ─── App Container ───────────────────────────────────────────────────────── */
#app { position: relative; z-index: 1; min-height: 100vh; }

/* ─── Background Orbs ─────────────────────────────────────────────────────── */
.bg-orbs {
    position: fixed; top: 0; left: 0; width: 100%; height: 100%;
    z-index: 0; pointer-events: none; overflow: hidden;
}
.bg-orb {
    position: absolute; border-radius: 50%;
    filter: blur(100px); opacity: 0.4;
    animation: orbFloat 20s ease-in-out infinite;
    transition: background 0.5s ease;
}
.bg-orb--1 { width:600px; height:600px; background:radial-gradient(circle,var(--orb1),transparent 70%); top:-200px; right:-200px; animation-delay:0s; }
.bg-orb--2 { width:500px; height:500px; background:radial-gradient(circle,var(--orb2),transparent 70%); bottom:-150px; left:-150px; animation-delay:-7s; }
.bg-orb--3 { width:400px; height:400px; background:radial-gradient(circle,var(--orb3),transparent 70%); top:40%; left:30%; animation-delay:-14s; }
@keyframes orbFloat {
    0%,100% { transform:translate(0,0) scale(1); }
    33%      { transform:translate(30px,-30px) scale(1.05); }
    66%      { transform:translate(-20px,20px) scale(0.95); }
}

/* ═══════════════════════════════════════════════════════════════════════════
   THEME TOGGLE (SVG icon version)
   ═══════════════════════════════════════════════════════════════════════════ */
.theme-toggle {
    position: relative;
    width: 52px; height: 28px;
    background: var(--bg-input);
    border: 1px solid var(--border);
    border-radius: 14px;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    padding: 0 4px;
    flex-shrink: 0;
}
.theme-toggle:hover { border-color: var(--border-hover); }

.theme-toggle__knob {
    width: 20px; height: 20px;
    border-radius: 50%;
    background: var(--accent);
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    display: flex;
    align-items: center;
    justify-content: center;
    color: #000;
    box-shadow: 0 2px 6px var(--accent-glow-strong);
    flex-shrink: 0;
}

[data-theme="light"] .theme-toggle__knob { transform: translateX(24px); }

.theme-toggle__icon {
    display: flex;
    align-items: center;
    justify-content: center;
    line-height: 1;
}
.theme-toggle__icon svg { display: block; }

.auth-theme-toggle { position: fixed; top: 20px; right: 20px; z-index: 100; }

/* ═══════════════════════════════════════════════════════════════════════════
   AUTH SCREEN
   ═══════════════════════════════════════════════════════════════════════════ */
.auth-screen {
    display: flex; align-items: center; justify-content: center;
    min-height: 100vh; padding: 20px;
}
.auth-container {
    width: 100%; max-width: 420px;
    animation: fadeSlideUp 0.6s ease-out;
}
.auth-logo { text-align: center; margin-bottom: 40px; }
.auth-logo__icon { width:56px; height:56px; margin:0 auto 16px; border-radius:14px; }
.auth-logo__name {
    font-size: 2.5rem; font-weight: 700; letter-spacing: -0.02em;
    background: linear-gradient(135deg, var(--accent-light), var(--accent), #00a0ff);
    -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text;
}
.auth-logo__tagline { font-size:0.9rem; color:var(--text-secondary); margin-top:8px; font-weight:300; }

.auth-card {
    background: var(--bg-glass);
    backdrop-filter: blur(40px);
    -webkit-backdrop-filter: blur(40px);
    border: 1px solid var(--border);
    border-radius: var(--radius-xl);
    padding: 40px;
    box-shadow: var(--shadow-lg);
    transition: background 0.3s ease, border-color 0.3s ease;
}

.auth-card__title {
    font-size: 1.25rem; font-weight: 600;
    color: var(--text-primary); margin-bottom: 8px;
}
.auth-card__desc { font-size: 0.9rem; color: var(--text-secondary); margin-bottom: 24px; line-height: 1.5; }

.auth-tabs {
    display: flex; gap: 4px;
    background: var(--bg-input);
    border-radius: var(--radius-md);
    padding: 4px; margin-bottom: 32px;
}
.auth-tab {
    flex: 1; padding: 10px 16px;
    border: none; background: transparent;
    color: var(--text-secondary);
    font-family: var(--font); font-size: 0.9rem; font-weight: 500;
    border-radius: var(--radius-sm); cursor: pointer; transition: var(--transition);
}
.auth-tab:hover { color: var(--text-primary); }
.auth-tab.active { background: var(--accent); color: var(--text-on-accent); box-shadow: 0 2px 8px var(--accent-glow-strong); }

.auth-forgot {
    text-align: center; margin-top: 16px;
}
.auth-forgot__link {
    background: none; border: none; cursor: pointer;
    color: var(--text-muted); font-family: var(--font);
    font-size: 0.85rem; transition: color 0.2s;
}
.auth-forgot__link:hover { color: var(--accent); }

/* Forms */
.form-group { margin-bottom: 20px; }
.form-label {
    display: block; font-size:0.8rem; font-weight:500;
    color:var(--text-secondary); margin-bottom:8px;
    text-transform:uppercase; letter-spacing:0.05em;
}
.form-input {
    width:100%; padding:14px 16px;
    background:var(--bg-input); border:1px solid var(--border);
    border-radius:var(--radius-md); color:var(--text-primary);
    font-family:var(--font); font-size:0.95rem; transition:var(--transition); outline:none;
}
.form-input::placeholder { color:var(--text-muted); }
.form-input:focus { background:var(--bg-input-focus); border-color:var(--border-accent); box-shadow:0 0 0 3px var(--accent-glow); }
.form-input:hover:not(:focus) { border-color:var(--border-hover); }
.form-input.invalid { border-color:var(--error); box-shadow:0 0 0 3px var(--error-bg); }
.form-hint { font-size:0.75rem; color:var(--text-muted); margin-top:6px; line-height:1.5; }

/* Password Requirements */
.password-requirements { margin-top:8px; display:flex; flex-direction:column; gap:4px; }
.password-req {
    font-size:0.75rem; color:var(--text-muted);
    display:flex; align-items:center; gap:6px; transition:color 0.2s ease;
}
.password-req__icon {
    width:14px; height:14px; border-radius:50%;
    border:1.5px solid var(--border-hover);
    display:flex; align-items:center; justify-content:center;
    font-size:8px; transition:all 0.2s ease; flex-shrink:0;
}
.password-req.met { color:var(--success); }
.password-req.met .password-req__icon { background:var(--success); border-color:var(--success); color:#fff; }

/* Buttons */
.btn {
    display: inline-flex; align-items: center; justify-content: center; gap: 8px;
    padding: 14px 24px; border: none;
    border-radius: var(--radius-md); font-family: var(--font);
    font-size: 0.95rem; font-weight: 600;
    cursor: pointer; transition: var(--transition); text-decoration: none; line-height: 1;
}
.btn--primary {
    width: 100%;
    background: linear-gradient(135deg, var(--accent), var(--accent-dark));
    color: var(--text-on-accent);
    box-shadow: 0 4px 16px var(--accent-glow-strong);
}
.btn--primary:hover { transform:translateY(-1px); box-shadow:0 6px 24px var(--accent-glow-strong); background:linear-gradient(135deg,var(--accent-light),var(--accent)); }
.btn--primary:active { transform:translateY(0); }
.btn--primary:disabled { opacity:0.5; cursor:not-allowed; transform:none; }

.btn--ghost {
    background:transparent; color:var(--text-secondary);
    border:1px solid var(--border); padding:8px 16px; font-size:0.85rem;
}
.btn--ghost:hover { background:var(--bg-card-hover); color:var(--text-primary); border-color:var(--border-hover); }
.btn--sm { padding: 6px 14px; font-size: 0.8rem; }

.btn--danger { background:transparent; color:var(--text-muted); border:none; padding:6px 10px; font-size:0.85rem; }
.btn--danger:hover { color:var(--error); background:var(--error-bg); }

/* New Set button */
.btn--new-set {
    background: linear-gradient(135deg, var(--accent), var(--accent-dark));
    color: var(--text-on-accent); padding: 9px 16px;
    font-size: 0.85rem; font-weight: 600; border-radius: var(--radius-md);
    border: none; cursor: pointer; transition: var(--transition);
    display: flex; align-items: center; gap: 6px;
}
.btn--new-set:hover { transform:translateY(-1px); box-shadow:0 4px 16px var(--accent-glow-strong); }

/* Alerts */
.alert {
    padding:12px 16px; border-radius:var(--radius-sm);
    font-size:0.85rem; margin-bottom:20px; animation:fadeIn 0.3s ease-out;
}
.alert--error   { background:var(--error-bg);   color:var(--error);   border:1px solid rgba(255,77,106,0.2); }
.alert--success { background:var(--success-bg); color:var(--success); border:1px solid rgba(0,212,170,0.2); }
.alert--info    { background:rgba(77,159,255,0.1); color:#4d9fff; border:1px solid rgba(77,159,255,0.2); }

/* ═══════════════════════════════════════════════════════════════════════════
   HEADER
   ═══════════════════════════════════════════════════════════════════════════ */
.header {
    position: sticky; top: 0; z-index: 100;
    background: var(--bg-header);
    backdrop-filter: blur(20px); -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border);
    transition: background 0.3s ease;
}
.header__inner {
    max-width: 1200px; margin: 0 auto;
    padding: 14px 24px;
    display: flex; align-items: center; justify-content: space-between; gap: 16px;
}
.header__left  { display: flex; align-items: center; gap: 24px; }
.header__right { display: flex; align-items: center; gap: 12px; }

.header__logo {
    font-size: 1.4rem; font-weight: 700;
    background: linear-gradient(135deg, var(--accent-light), var(--accent));
    -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text;
    flex-shrink: 0;
}

/* Nav */
.header__nav { display: flex; align-items: center; gap: 4px; }
.header__nav-link {
    padding: 6px 12px; border-radius: var(--radius-sm);
    color: var(--text-secondary); font-size: 0.9rem; font-weight: 500;
    text-decoration: none; cursor: pointer; transition: var(--transition);
    border: none; background: none; font-family: var(--font);
}
.header__nav-link:hover  { color: var(--text-primary); background: var(--bg-card); }
.header__nav-link.active { color: var(--text-primary); font-weight: 600; }
.header__nav-link.active::after { content: ''; display: block; height: 2px; background: var(--accent); border-radius: 1px; margin-top: 2px; }

/* Email pill — like on the screenshot */
.header__email-pill {
    display: flex; align-items: center; gap: 8px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 20px;
    padding: 6px 14px 6px 10px;
    color: var(--text-secondary);
    font-size: 0.82rem;
    white-space: nowrap;
    max-width: 220px;
    transition: var(--transition);
}
.header__email-pill svg { color: var(--accent); flex-shrink: 0; }
.header__email-text {
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

/* ═══════════════════════════════════════════════════════════════════════════
   MAIN / LAYOUT
   ═══════════════════════════════════════════════════════════════════════════ */
.main { max-width: 1200px; margin: 0 auto; padding: 32px 24px 80px; }

/* Stats Bar */
.stats-bar {
    display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px;
    margin-bottom: 40px; animation: fadeSlideUp 0.4s ease-out;
}
.stat-card {
    background: var(--bg-card); border: 1px solid var(--border);
    border-radius: var(--radius-lg); padding: 20px 24px; transition: var(--transition);
}
.stat-card:hover { background: var(--bg-card-hover); border-color: var(--border-hover); }
.stat-card__label { font-size: 0.7rem; color: var(--text-secondary); text-transform: uppercase; letter-spacing: 0.07em; margin-bottom: 8px; }
.stat-card__value { font-size: 1.9rem; font-weight: 700; color: var(--accent); line-height: 1; }

/* Sections */
.section { margin-bottom: 40px; }
.section__header { display: flex; align-items: center; justify-content: space-between; margin-bottom: 20px; }
.section__title { font-size: 1.1rem; font-weight: 600; color: var(--text-primary); }
.section__subtitle { font-size: 0.78rem; color: var(--text-muted); margin-left: 10px; align-self: center; }
.section__link {
    background: none; border: none; cursor: pointer;
    color: var(--accent); font-family: var(--font); font-size: 0.85rem;
    font-weight: 500; transition: color 0.2s;
}
.section__link:hover { color: var(--accent-light); }

/* Search sets results block */
.search-sets-block {
    background: var(--bg-card);
    border: 1px solid var(--border-accent);
    border-radius: var(--radius-md);
    margin-bottom: 14px;
    overflow: hidden;
    animation: fadeSlideUp 0.2s ease-out;
}
.search-sets-label {
    padding: 8px 14px 6px;
    font-size: 0.72rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: var(--accent);
}
.search-set-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 10px 14px;
    cursor: pointer;
    border-top: 1px solid var(--border);
    transition: var(--transition);
}
.search-set-item:hover { background: var(--bg-card-hover); }
.search-set-item__name { font-size: 0.9rem; font-weight: 500; color: var(--text-primary); }
.search-set-item__count { font-size: 0.78rem; color: var(--text-muted); }


/* ═══════════════════════════════════════════════════════════════════════════
   WORD SETS GRID
   ═══════════════════════════════════════════════════════════════════════════ */
/* Sets row — fixed 4 columns: 3 recent set cards + New Set, always one line */
.sets-row {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 16px;
}
.sets-loading { display: flex; justify-content: center; padding: 40px; }

/* All Sets expandable list */
.sets-all-list {
    margin-top: 12px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    overflow: hidden;
    animation: fadeSlideUp 0.25s ease-out;
}
.set-list-row {
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 12px 18px;
    cursor: pointer;
    border-bottom: 1px solid var(--border);
    transition: var(--transition);
}
.set-list-row:last-child { border-bottom: none; }
.set-list-row:hover { background: var(--bg-card-hover); }
.set-list-row__badge {
    min-width: 36px;
    text-align: center;
    padding: 3px 7px;
    border-radius: 6px;
    font-size: 0.7rem;
    font-weight: 700;
    color: #fff;
    flex-shrink: 0;
}
.set-list-row__name {
    flex: 1;
    font-size: 0.92rem;
    font-weight: 500;
    color: var(--text-primary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}
.set-list-row__count {
    font-size: 0.8rem;
    color: var(--text-muted);
    flex-shrink: 0;
    min-width: 60px;
    text-align: right;
}
.set-list-row__date {
    font-size: 0.75rem;
    color: var(--text-muted);
    flex-shrink: 0;
    min-width: 90px;
    text-align: right;
}
.set-list-row__actions {
    display: flex;
    gap: 4px;
    align-items: center;
    flex-shrink: 0;
}
.set-list-row__action-btn {
    background: none;
    border: none;
    cursor: pointer;
    color: var(--text-muted);
    padding: 6px 8px;
    border-radius: var(--radius-sm);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
}
.set-list-row__action-btn:hover {
    background: var(--bg-card-hover);
    color: var(--text-primary);
}
.set-list-row__action-btn--danger:hover {
    color: var(--error);
    background: var(--error-bg);
}
.set-list-row__action-btn svg {
    width: 16px;
    height: 16px;
    flex-shrink: 0;
}



/* Set Card */
.set-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 20px;
    cursor: pointer;
    transition: var(--transition);
    position: relative;
    animation: fadeSlideUp 0.4s ease-out backwards;
}
.set-card:hover {
    background: var(--bg-card-hover);
    border-color: var(--border-hover);
    transform: translateY(-2px);
    box-shadow: var(--shadow);
}

/* New Set card */
.set-card--new {
    display: flex; flex-direction: column;
    align-items: center; justify-content: center; gap: 12px;
    border: 2px dashed var(--border);
    background: transparent;
    color: var(--text-muted);
    font-size: 0.85rem; font-weight: 500;
    min-height: 140px;
}
.set-card--new:hover { border-color: var(--accent); color: var(--accent); background: var(--accent-glow); }
.set-card--new svg { transition: var(--transition); }
.set-card--new:hover svg { stroke: var(--accent); }

.set-card__header {
    display: flex; align-items: center; justify-content: space-between;
    margin-bottom: 12px;
}
.set-card__lang {
    padding: 3px 8px; border-radius: 5px;
    font-size: 0.7rem; font-weight: 700;
    color: #fff; letter-spacing: 0.05em;
}
.set-card__menu {
    position: relative; cursor: pointer;
    color: var(--text-muted); padding: 4px; border-radius: 6px;
    display: flex; align-items: center; justify-content: center;
    transition: var(--transition); z-index: 10;
}
.set-card__menu:hover { background: var(--bg-card-hover); color: var(--text-primary); }

.set-card__dropdown {
    position: absolute; right: 0; top: calc(100% + 4px);
    background: var(--bg-glass);
    backdrop-filter: blur(20px); -webkit-backdrop-filter: blur(20px);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    min-width: 160px; z-index: 200;
    overflow: hidden; box-shadow: var(--shadow-lg);
    opacity: 0; transform: translateY(-8px) scale(0.95);
    pointer-events: none; transition: opacity 0.2s, transform 0.2s;
}
.set-card__dropdown.open { opacity: 1; transform: translateY(0) scale(1); pointer-events: all; }

.set-card__dropdown-item {
    display: flex; align-items: center; gap: 10px;
    width: 100%; padding: 10px 14px;
    background: none; border: none; cursor: pointer;
    color: var(--text-secondary); font-family: var(--font);
    font-size: 0.85rem; text-align: left; transition: var(--transition);
}
.set-card__dropdown-item:hover { background: var(--bg-card-hover); color: var(--text-primary); }
.set-card__dropdown-item--danger:hover { color: var(--error); background: var(--error-bg); }

.set-card__name { font-size: 1rem; font-weight: 600; color: var(--text-primary); margin-bottom: 4px; }
.set-card__count { font-size: 0.8rem; color: var(--text-muted); margin-bottom: 16px; }
.set-card__footer { display: flex; align-items: center; justify-content: space-between; }
.set-card__date { font-size: 0.75rem; color: var(--text-muted); }

/* ═══════════════════════════════════════════════════════════════════════════
   SEARCH
   ═══════════════════════════════════════════════════════════════════════════ */
.search-bar {
    margin-bottom: 20px; position: relative;
    animation: fadeSlideUp 0.5s ease-out;
}
.search-bar__icon {
    position: absolute; left: 16px; top: 50%;
    transform: translateY(-50%);
    color: var(--text-muted); pointer-events: none;
}
.search-bar__input {
    width: 100%; padding: 14px 16px 14px 44px;
    background: var(--bg-card); border: 1px solid var(--border);
    border-radius: var(--radius-lg); color: var(--text-primary);
    font-family: var(--font); font-size: 0.95rem;
    transition: var(--transition); outline: none;
}
.search-bar__input:focus { background: var(--bg-card-hover); border-color: var(--border-accent); box-shadow: 0 0 0 3px var(--accent-glow); }
.search-bar__input::placeholder { color: var(--text-muted); }

/* ═══════════════════════════════════════════════════════════════════════════
   WORD LIST & CARDS
   ═══════════════════════════════════════════════════════════════════════════ */
.word-list { display: flex; flex-direction: column; gap: 12px; }

.word-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 20px 24px;
    transition: var(--transition);
    animation: fadeSlideUp 0.4s ease-out backwards;
}
.word-card:hover {
    background: var(--bg-card-hover);
    border-color: var(--border-hover);
    transform: translateY(-1px);
    box-shadow: var(--shadow);
}

.word-card__header {
    display: flex; align-items: flex-start;
    justify-content: space-between; gap: 12px; margin-bottom: 10px;
}
.word-card__left { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; }

.word-card__word { font-size: 1.2rem; font-weight: 600; color: var(--accent); }
.word-card__pos {
    font-size: 0.75rem; padding: 3px 9px;
    background: var(--bg-input); border: 1px solid var(--border);
    border-radius: 20px; color: var(--text-muted); font-weight: 500;
}

.word-card__actions { position: relative; flex-shrink: 0; }

.word-card__menu-btn {
    background: none; border: none; cursor: pointer;
    color: var(--text-muted); padding: 4px 8px;
    border-radius: var(--radius-sm); transition: var(--transition);
    display: flex; align-items: center; opacity: 0;
}
.word-card:hover .word-card__menu-btn { opacity: 1; }
.word-card__menu-btn:hover { background: var(--bg-card-hover); color: var(--text-primary); }

/* Word card dropdown */
.word-card__dropdown {
    position: absolute; right: 0; top: calc(100% + 4px);
    background: var(--bg-glass);
    backdrop-filter: blur(20px); -webkit-backdrop-filter: blur(20px);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    min-width: 190px; z-index: 200;
    overflow: visible; box-shadow: var(--shadow-lg);
    opacity: 0; transform: translateY(-8px) scale(0.95);
    pointer-events: none; transition: opacity 0.2s, transform 0.2s;
}
.word-card__dropdown.open {
    opacity: 1; transform: translateY(0) scale(1); pointer-events: all;
}

.word-card__dropdown-item {
    display: flex; align-items: center; gap: 10px;
    width: 100%; padding: 10px 14px;
    background: none; border: none; cursor: pointer;
    color: var(--text-secondary); font-family: var(--font);
    font-size: 0.85rem; text-align: left; transition: var(--transition);
    justify-content: space-between;
}
.word-card__dropdown-item:hover { background: var(--bg-card-hover); color: var(--text-primary); }
.word-card__dropdown-item--danger:hover { color: var(--error); background: var(--error-bg); }

/* Submenu */
.word-card__dropdown-submenu { position: relative; }
.word-card__dropdown-submenu .word-card__dropdown-item { justify-content: space-between; }

.word-card__submenu {
    position: absolute; left: 100%; top: 0;
    background: var(--bg-glass);
    backdrop-filter: blur(20px); -webkit-backdrop-filter: blur(20px);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    min-width: 180px; z-index: 300;
    box-shadow: var(--shadow-lg);
    opacity: 0; pointer-events: none;
    transform: translateX(-8px);
    transition: opacity 0.2s, transform 0.2s;
    max-height: 240px; overflow-y: auto;
}
.word-card__dropdown-submenu:hover .word-card__submenu {
    opacity: 1; pointer-events: all; transform: translateX(0);
}

.submenu-arrow { margin-left: auto; flex-shrink: 0; }

.submenu-item {
    display: flex; align-items: center; justify-content: space-between;
    width: 100%; padding: 10px 14px;
    background: none; border: none; cursor: pointer;
    color: var(--text-secondary); font-family: var(--font);
    font-size: 0.85rem; text-align: left; transition: var(--transition);
}
.submenu-item:hover { background: var(--bg-card-hover); color: var(--accent); }
.submenu-item__count {
    font-size: 0.75rem; color: var(--text-muted);
    background: var(--bg-input); padding: 2px 7px; border-radius: 20px;
}

.submenu-empty {
    padding: 12px 14px; font-size: 0.82rem;
    color: var(--text-muted);
}
.submenu-create-btn {
    background: none; border: none; cursor: pointer;
    color: var(--accent); font-family: var(--font);
    font-size: 0.82rem; text-decoration: underline;
}

.word-card__sentence { font-size: 0.95rem; color: var(--text-secondary); line-height: 1.6; }
.word-card__sentence mark { background: var(--accent-glow-strong); color: var(--accent-light); padding: 1px 4px; border-radius: 3px; }
[data-theme="light"] .word-card__sentence mark { color: var(--accent-dark); }

.word-card__meta {
    display: flex; align-items: center; gap: 14px;
    margin-top: 12px; font-size: 0.75rem; color: var(--text-muted);
}
.word-card__date { display: flex; align-items: center; gap: 5px; }
.word-card__source {
    display: flex; align-items: center; gap: 5px;
    color: var(--text-muted); text-decoration: none;
    transition: color 0.2s;
}
.word-card__source:hover { color: var(--accent); }

/* Staggered animations */
.word-card:nth-child(1) { animation-delay: 0.05s; }
.word-card:nth-child(2) { animation-delay: 0.1s; }
.word-card:nth-child(3) { animation-delay: 0.15s; }
.word-card:nth-child(4) { animation-delay: 0.2s; }
.word-card:nth-child(5) { animation-delay: 0.25s; }
.word-card:nth-child(6) { animation-delay: 0.3s; }

/* Empty State */
.empty-state { text-align:center; padding:80px 20px; animation:fadeSlideUp 0.5s ease-out; }
.empty-state__icon { font-size:3.5rem; margin-bottom:20px; opacity:0.6; }
.empty-state__title { font-size:1.3rem; font-weight:600; color:var(--text-primary); margin-bottom:8px; }
.empty-state__text { font-size:0.95rem; color:var(--text-secondary); max-width:400px; margin:0 auto; line-height:1.6; }

/* Pagination */
.pagination {
    display:flex; align-items:center; justify-content:center;
    gap:8px; margin-top:32px; animation:fadeIn 0.4s ease-out;
}
.pagination__btn {
    padding:8px 16px; background:var(--bg-card); border:1px solid var(--border);
    border-radius:var(--radius-sm); color:var(--text-secondary);
    font-family:var(--font); font-size:0.85rem; cursor:pointer; transition:var(--transition);
}
.pagination__btn:hover:not(:disabled) { background:var(--bg-card-hover); border-color:var(--border-hover); color:var(--text-primary); }
.pagination__btn:disabled { opacity:0.3; cursor:not-allowed; }
.pagination__btn.active { background:var(--accent); color:var(--text-on-accent); border-color:var(--accent); font-weight:600; }
.pagination__info { font-size:0.85rem; color:var(--text-muted); padding:0 8px; }

/* Loading Spinner */
.spinner {
    display:inline-block; width:20px; height:20px;
    border:2px solid var(--border); border-top-color:var(--accent);
    border-radius:50%; animation:spin 0.6s linear infinite;
}
.loading-screen {
    display:flex; align-items:center; justify-content:center;
    min-height:100vh; flex-direction:column; gap:16px;
}
.loading-screen .spinner { width:36px; height:36px; border-width:3px; }

/* ═══════════════════════════════════════════════════════════════════════════
   SET DETAIL
   ═══════════════════════════════════════════════════════════════════════════ */
.set-detail-header { margin-bottom: 32px; animation: fadeSlideUp 0.4s ease-out; }
.set-detail-title { font-size: 2rem; font-weight: 700; color: var(--text-primary); margin-bottom: 8px; }
.set-detail-desc { color: var(--text-secondary); margin-bottom: 16px; }
.set-detail-meta { display: flex; align-items: center; gap: 16px; font-size: 0.85rem; color: var(--text-muted); }

/* ═══════════════════════════════════════════════════════════════════════════
   MODALS
   ═══════════════════════════════════════════════════════════════════════════ */
.modal-overlay {
    position: fixed; inset: 0; z-index: 1000;
    background: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(8px); -webkit-backdrop-filter: blur(8px);
    display: flex; align-items: center; justify-content: center;
    padding: 20px;
    opacity: 0; pointer-events: none; transition: opacity 0.25s;
}
.modal-overlay.open { opacity: 1; pointer-events: all; }

.modal {
    background: var(--bg-glass);
    backdrop-filter: blur(40px); -webkit-backdrop-filter: blur(40px);
    border: 1px solid var(--border);
    border-radius: var(--radius-xl);
    padding: 32px; width: 100%; max-width: 420px;
    box-shadow: var(--shadow-lg);
    transform: translateY(20px) scale(0.97);
    transition: transform 0.25s;
}
.modal-overlay.open .modal { transform: translateY(0) scale(1); }

.modal__header {
    display: flex; align-items: center; justify-content: space-between;
    margin-bottom: 20px;
}
.modal__title { font-size: 1.1rem; font-weight: 600; color: var(--text-primary); }
.modal__close {
    background: none; border: none; cursor: pointer;
    color: var(--text-muted); padding: 4px; border-radius: 6px; transition: var(--transition);
    display: flex; align-items: center;
}
.modal__close:hover { color: var(--text-primary); background: var(--bg-card-hover); }
.modal__desc { font-size: 0.875rem; color: var(--text-secondary); margin-bottom: 20px; line-height: 1.5; }
.modal__footer {
    display: flex; gap: 12px; margin-top: 24px;
    justify-content: flex-end;
}
.modal__submit { width: auto; }

/* ─── Animations ──────────────────────────────────────────────────────────── */
@keyframes fadeSlideUp {
    from { opacity:0; transform:translateY(20px); }
    to   { opacity:1; transform:translateY(0); }
}
@keyframes fadeIn { from { opacity:0; } to { opacity:1; } }
@keyframes spin   { to { transform:rotate(360deg); } }

/* ─── Toast Notifications ─────────────────────────────────────────────────── */
.toast-container {
    position:fixed; top:20px; right:20px; z-index:9999;
    display:flex; flex-direction:column; gap:8px;
}
.toast {
    padding:14px 20px; background:var(--bg-glass);
    backdrop-filter:blur(20px); border:1px solid var(--border);
    border-radius:var(--radius-md); color:var(--text-primary);
    font-size:0.9rem; box-shadow:var(--shadow-lg);
    animation:toastIn 0.3s ease-out; max-width:360px;
}
.toast--success { border-color:rgba(0,212,170,0.3); }
.toast--error   { border-color:rgba(255,77,106,0.3); }
.toast.removing { animation:toastOut 0.3s ease-in forwards; }
@keyframes toastIn  { from { opacity:0; transform:translateX(60px); } to { opacity:1; transform:translateX(0); } }
@keyframes toastOut { from { opacity:1; transform:translateX(0); } to { opacity:0; transform:translateX(60px); } }

/* ─── Scrollbar ───────────────────────────────────────────────────────────── */
::-webkit-scrollbar { width:6px; }
::-webkit-scrollbar-track { background:transparent; }
::-webkit-scrollbar-thumb { background:var(--border); border-radius:3px; }
::-webkit-scrollbar-thumb:hover { background:var(--border-hover); }

/* ─── Responsive ──────────────────────────────────────────────────────────── */
@media (max-width: 900px) {
    .stats-bar { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 640px) {
    .auth-card { padding:28px 24px; border-radius:var(--radius-lg); }
    .auth-logo__name { font-size:2rem; }
    .stats-bar { grid-template-columns: repeat(2, 1fr); }
    .header__inner { padding:12px 16px; }
    .header__email-pill { display: none; }
    .main { padding:20px 16px 60px; }
    .word-card { padding:16px; }
    .word-card__menu-btn { opacity:1; }
    .sets-row { grid-template-columns: repeat(2, 1fr); }
    .set-list-row__date { display: none; }
}
@media (max-width: 400px) {
    .stats-bar { grid-template-columns: 1fr 1fr; }
    .sets-row { grid-template-columns: repeat(2, 1fr); }
}