/* ================================================
   STUDYTRACK — style.css  FINAL VERSION
================================================ */
@import url('https://fonts.googleapis.com/css2?family=Space+Grotesk:wght@300;400;500;600;700&family=Syne:wght@400;500;600;700;800&display=swap');

/* ===== VARIABLES ===== */
:root {
    --bg: #0a0a0f;
    --surface: #13131a;
    --surface2: #1c1c28;
    --border: #2a2a3d;
    --accent: #6c63ff;
    --accent2: #ff6584;
    --accent3: #43e97b;
    --text: #e8e8f0;
    --text2: #8888aa;
    --text3: #4a4a6a;
    --danger: #ff4757;
    --warn: #ffa502;
    --success: #2ed573;
    --radius: 16px;
    --radius-sm: 10px;
    --navbar-h: 64px;
    --bottom-nav-h: 68px;
}

body.light {
    --bg: #f2f2f7;
    --surface: #ffffff;
    --surface2: #e8e8f0;
    --border: #d4d4e8;
    --text: #0d0d18;
    --text2: #55557a;
    --text3: #aaaacc;
}

/* ===== RESET ===== */
*,
*::before,
*::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    -webkit-tap-highlight-color: transparent;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Space Grotesk', sans-serif;
    background: var(--bg);
    color: var(--text);
    min-height: 100vh;
    overflow-x: hidden;
    transition: background .3s, color .3s;
}

body::before {
    content: '';
    position: fixed;
    inset: 0;
    background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='0.03'/%3E%3C/svg%3E");
    pointer-events: none;
    z-index: 0;
    opacity: .4;
}

::-webkit-scrollbar {
    width: 5px;
    height: 5px;
}

::-webkit-scrollbar-track {
    background: var(--bg);
}

::-webkit-scrollbar-thumb {
    background: var(--border);
    border-radius: 3px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--text3);
}

/* ===== AUTH ===== */
#auth-screen {
    position: fixed;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 100;
    background: var(--bg);
    transition: opacity .5s, transform .5s;
    padding: 16px;
}

#auth-screen.hidden {
    opacity: 0;
    pointer-events: none;
    transform: scale(.97);
}

.auth-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 24px;
    padding: 36px 28px;
    width: 100%;
    max-width: 440px;
    position: relative;
    box-shadow: 0 40px 120px rgba(108, 99, 255, .15);
}

.auth-card::before {
    content: '';
    position: absolute;
    top: -1px;
    left: 20%;
    right: 20%;
    height: 2px;
    background: linear-gradient(90deg, transparent, var(--accent), transparent);
    border-radius: 999px;
}

.auth-logo {
    font-family: 'Syne', sans-serif;
    font-size: 26px;
    font-weight: 800;
    background: linear-gradient(135deg, var(--accent), var(--accent2));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    margin-bottom: 6px;
}

.auth-sub {
    color: var(--text2);
    font-size: 13px;
    margin-bottom: 28px;
    line-height: 1.5;
}

.tab-row {
    display: flex;
    gap: 4px;
    background: var(--surface2);
    border-radius: var(--radius-sm);
    padding: 4px;
    margin-bottom: 24px;
}

.tab-btn {
    flex: 1;
    padding: 10px 8px;
    border: none;
    background: transparent;
    color: var(--text2);
    border-radius: 8px;
    cursor: pointer;
    font-family: 'Space Grotesk', sans-serif;
    font-size: 14px;
    font-weight: 500;
    transition: all .2s;
}

.tab-btn.active {
    background: var(--accent);
    color: #fff;
}

.inp-group {
    margin-bottom: 14px;
}

.inp-group label {
    display: block;
    font-size: 11px;
    font-weight: 600;
    color: var(--text2);
    letter-spacing: .08em;
    text-transform: uppercase;
    margin-bottom: 7px;
}

.inp-group input {
    width: 100%;
    padding: 13px 14px;
    background: var(--surface2);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    color: var(--text);
    font-family: 'Space Grotesk', sans-serif;
    font-size: 15px;
    outline: none;
    transition: border .2s, box-shadow .2s;
    -webkit-appearance: none;
}

.inp-group input:focus {
    border-color: var(--accent);
    box-shadow: 0 0 0 3px rgba(108, 99, 255, .15);
}

.btn-primary {
    width: 100%;
    padding: 14px;
    background: linear-gradient(135deg, var(--accent), #8b5cf6);
    border: none;
    border-radius: var(--radius-sm);
    color: #fff;
    font-family: 'Space Grotesk', sans-serif;
    font-size: 15px;
    font-weight: 600;
    cursor: pointer;
    transition: transform .15s, box-shadow .15s;
    margin-top: 8px;
    -webkit-appearance: none;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 30px rgba(108, 99, 255, .4);
}

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

.auth-err {
    background: rgba(255, 71, 87, .1);
    border: 1px solid rgba(255, 71, 87, .3);
    border-radius: 8px;
    padding: 11px 13px;
    color: var(--danger);
    font-size: 13px;
    margin-bottom: 14px;
    display: none;
    line-height: 1.5;
}

/* ===== APP ===== */
#app {
    display: none;
    min-height: 100vh;
}

#app.visible {
    display: block;
}

/* ===== NAVBAR ===== */
.navbar {
    position: sticky;
    top: 0;
    z-index: 50;
    background: rgba(10, 10, 15, .92);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border);
    padding: 0 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: var(--navbar-h);
    gap: 12px;
    transition: background .3s;
}

body.light .navbar {
    background: rgba(242, 242, 247, .95);
}

.nav-logo {
    font-family: 'Syne', sans-serif;
    font-size: 20px;
    font-weight: 800;
    background: linear-gradient(135deg, var(--accent), var(--accent2));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    flex-shrink: 0;
}

.nav-tabs {
    display: flex;
    gap: 4px;
    flex: 1;
    justify-content: center;
}

.nav-tab {
    padding: 8px 14px;
    background: transparent;
    border: none;
    color: var(--text2);
    cursor: pointer;
    border-radius: 8px;
    font-family: 'Space Grotesk', sans-serif;
    font-size: 13px;
    font-weight: 500;
    transition: all .2s;
    white-space: nowrap;
}

.nav-tab.active {
    background: var(--surface2);
    color: var(--text);
}

.nav-tab:hover:not(.active) {
    color: var(--text);
}

/* Desktop o'ng tomon — avatar + dropdown */
.nav-right {
    display: flex;
    align-items: center;
    gap: 10px;
    position: relative;
}

/* nav-user YASHIRIN */
.nav-user {
    display: none !important;
}

.nav-name {
    display: none !important;
}

/* Desktop avatar tugmasi */
.nav-avatar-wrap {
    position: relative;
}

.nav-avatar-btn {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    padding: 0px;
    background: linear-gradient(135deg, var(--accent), var(--accent2));
    background-clip: content-box;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 14px;
    font-weight: 700;
    color: #fff;
    cursor: pointer;
    border: 2px solid transparent;
    transition: border-color .2s, box-shadow .2s;
    flex-shrink: 0;
}

.nav-avatar-btn:hover {
    border-color: rgba(255, 255, 255, .3);
    box-shadow: 0 0 0 4px rgba(108, 99, 255, .15);
}

/* Desktop dropdown */
.nav-dropdown {
    position: absolute;
    top: calc(100% + 10px);
    right: 0;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 16px;
    padding: 8px;
    min-width: 220px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, .4);
    opacity: 0;
    pointer-events: none;
    transform: translateY(-8px);
    transition: opacity .2s, transform .2s;
    z-index: 100;
}

.nav-dropdown.open {
    opacity: 1;
    pointer-events: all;
    transform: translateY(0);
}

.nav-dropdown::before {
    content: '';
    position: absolute;
    top: -1px;
    left: 20%;
    right: 20%;
    height: 2px;
    background: linear-gradient(90deg, transparent, var(--accent), transparent);
    border-radius: 999px;
}

.dd-user-row {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 8px 12px;
    border-bottom: 1px solid var(--border);
    margin-bottom: 6px;
}

.dd-avatar {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--accent), var(--accent2));
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 14px;
    font-weight: 700;
    color: #fff;
    flex-shrink: 0;
}

.dd-user-name {
    font-size: 14px;
    font-weight: 600;
    color: var(--text);
}

.dd-user-email {
    font-size: 11px;
    color: var(--text2);
    margin-top: 1px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    max-width: 140px;
}

/* Dropdown theme row */
.dd-theme-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 10px 8px;
    border-radius: 10px;
    cursor: pointer;
    transition: background .15s;
}

.dd-theme-row:hover {
    background: var(--surface2);
}

.dd-theme-label {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 14px;
    font-weight: 500;
    color: var(--text);
}

.theme-icon {
    font-size: 17px;
}

/* Toggle switch */
.toggle-switch {
    position: relative;
    width: 44px;
    height: 24px;
    background: var(--surface2);
    border: 1px solid var(--border);
    border-radius: 999px;
    cursor: pointer;
    transition: background .25s;
    flex-shrink: 0;
}

.toggle-switch.on {
    background: var(--accent);
    border-color: var(--accent);
}

.toggle-switch::after {
    content: '';
    position: absolute;
    top: 2px;
    left: 2px;
    width: 18px;
    height: 18px;
    border-radius: 50%;
    background: #fff;
    transition: transform .25s;
    box-shadow: 0 1px 4px rgba(0, 0, 0, .3);
}

.toggle-switch.on::after {
    transform: translateX(20px);
}

.dd-divider {
    height: 1px;
    background: var(--border);
    margin: 6px 0;
}

.dd-logout-btn {
    width: 100%;
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 8px;
    background: transparent;
    border: none;
    cursor: pointer;
    border-radius: 10px;
    transition: background .15s;
    text-align: left;
}

.dd-logout-btn:hover {
    background: rgba(255, 71, 87, .08);
}

.dd-logout-btn .logout-icon {
    font-size: 17px;
}

.dd-logout-btn .logout-text {
    font-size: 14px;
    font-weight: 500;
    color: var(--danger);
    font-family: 'Space Grotesk', sans-serif;
}

/* ===== BOTTOM NAV (Mobile) ===== */
.bottom-nav {
    display: none;
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    z-index: 50;
    background: rgba(10, 10, 15, .97);
    backdrop-filter: blur(24px);
    -webkit-backdrop-filter: blur(24px);
    border-top: 1px solid var(--border);
    padding-bottom: env(safe-area-inset-bottom);
    transition: background .3s;
}

body.light .bottom-nav {
    background: rgba(255, 255, 255, .97);
}

.bottom-nav-inner {
    display: flex;
    align-items: stretch;
    height: var(--bottom-nav-h);
    width: 100%;
}

.bottom-tab {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 5px;
    flex: 1;
    padding: 10px 4px;
    background: transparent;
    border: none;
    cursor: pointer;
    position: relative;
    transition: background .15s;
}

.bottom-tab:active {
    background: rgba(108, 99, 255, .07);
}

.bottom-tab .tab-icon {
    font-size: 22px;
    line-height: 1;
}

.bottom-tab .tab-label {
    font-size: 10px;
    font-weight: 600;
    color: var(--text3);
    letter-spacing: .03em;
    font-family: 'Space Grotesk', sans-serif;
    transition: color .2s;
}

.bottom-tab.active .tab-label {
    color: var(--accent);
}

.bottom-tab.active::before {
    content: '';
    position: absolute;
    top: 0;
    left: 20%;
    right: 20%;
    height: 2px;
    background: var(--accent);
    border-radius: 0 0 4px 4px;
}

/* ===== DRAWER (Mobile profil) ===== */
.drawer-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, .55);
    backdrop-filter: blur(6px);
    -webkit-backdrop-filter: blur(6px);
    z-index: 300;
    opacity: 0;
    pointer-events: none;
    transition: opacity .3s;
}

.drawer-overlay.open {
    opacity: 1;
    pointer-events: all;
}

.profile-drawer {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    z-index: 301;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 24px 24px 0 0;
    padding: 12px 20px 24px;
    padding-bottom: calc(24px + env(safe-area-inset-bottom));
    transform: translateY(100%);
    transition: transform .35s cubic-bezier(.34, 1.2, .64, 1);
    box-shadow: 0 -20px 60px rgba(0, 0, 0, .5);
}

.profile-drawer.open {
    transform: translateY(0);
}

.drawer-handle {
    width: 40px;
    height: 4px;
    background: var(--border);
    border-radius: 999px;
    margin: 0 auto 22px;
}

.drawer-avatar-row {
    display: flex;
    align-items: center;
    gap: 14px;
    margin-bottom: 20px;
    padding: 0 4px;
}

.drawer-avatar {
    width: 54px;
    height: 54px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--accent), var(--accent2));
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 22px;
    font-weight: 800;
    color: #fff;
    flex-shrink: 0;
}

.drawer-name {
    font-family: 'Syne', sans-serif;
    font-size: 18px;
    font-weight: 700;
    color: var(--text);
}

.drawer-email {
    font-size: 13px;
    color: var(--text2);
    margin-top: 3px;
}

.drawer-divider {
    height: 1px;
    background: var(--border);
    margin: 10px 0 14px;
}

.drawer-theme-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 12px 4px;
}

.drawer-theme-label {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 15px;
    font-weight: 500;
    color: var(--text);
    font-family: 'Space Grotesk', sans-serif;
}

.drawer-logout-btn {
    width: 100%;
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 14px 4px;
    background: transparent;
    border: none;
    cursor: pointer;
    border-radius: 12px;
    transition: background .2s;
    text-align: left;
    margin-top: 4px;
}

.drawer-logout-btn:hover,
.drawer-logout-btn:active {
    background: rgba(255, 71, 87, .08);
}

.drawer-logout-btn .logout-icon {
    font-size: 20px;
}

.drawer-logout-btn .logout-text {
    font-size: 15px;
    font-weight: 500;
    color: var(--danger);
    font-family: 'Space Grotesk', sans-serif;
}

/* ===== PAGES ===== */
.page {
    display: none;
    padding: 28px 24px;
    max-width: 1200px;
    margin: 0 auto;
}

.page.active {
    display: block;
}

/* ===== CALENDAR ===== */
.cal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 24px;
    gap: 12px;
    flex-wrap: wrap;
}

.cal-title {
    font-family: 'Syne', sans-serif;
    font-size: 28px;
    font-weight: 800;
    line-height: 1.2;
}

.cal-title span {
    background: linear-gradient(135deg, var(--accent), var(--accent2));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.cal-title-sub {
    font-size: 13px;
    color: var(--text2);
    margin-top: 4px;
    line-height: 1.4;
}

.cal-nav {
    display: flex;
    align-items: center;
    gap: 10px;
    flex-shrink: 0;
}

.cal-nav-btn {
    width: 36px;
    height: 36px;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 8px;
    color: var(--text);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all .2s;
    font-size: 16px;
}

.cal-nav-btn:hover {
    border-color: var(--accent);
    color: var(--accent);
}

.cal-month-label {
    font-size: 15px;
    font-weight: 600;
    min-width: 140px;
    text-align: center;
}

.cal-grid {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    gap: 6px;
}

.cal-day-header {
    text-align: center;
    padding: 8px 2px;
    font-size: 10px;
    font-weight: 700;
    letter-spacing: .08em;
    color: var(--text3);
    text-transform: uppercase;
}

.cal-cell {
    aspect-ratio: 1;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 3px;
    cursor: default;
    position: relative;
    transition: all .2s;
    min-height: 0;
}

.cal-cell.empty {
    background: transparent;
    border-color: transparent;
}

.cal-cell.today {
    border-color: var(--accent);
    background: rgba(108, 99, 255, .08);
    cursor: pointer;
}

.cal-cell.today:hover,
.cal-cell.today:active {
    background: rgba(108, 99, 255, .18);
    box-shadow: 0 4px 20px rgba(108, 99, 255, .25);
}

.cal-cell.yesterday {
    border-color: var(--border);
    background: var(--surface2);
    cursor: pointer;
}

.cal-cell.yesterday:hover,
.cal-cell.yesterday:active {
    border-color: var(--accent2);
    box-shadow: 0 4px 20px rgba(255, 101, 132, .15);
}

.cal-cell.future {
    opacity: .25;
}

.cal-cell.has-data .dot {
    width: 5px;
    height: 5px;
    border-radius: 50%;
    background: var(--accent3);
}

.cal-cell.today .day-num {
    color: var(--accent);
}

.cal-cell .day-num {
    font-size: 14px;
    font-weight: 600;
    line-height: 1;
}

.cal-cell .cell-label {
    font-size: 8px;
    font-weight: 700;
    letter-spacing: .06em;
    text-transform: uppercase;
    padding: 2px 5px;
    border-radius: 4px;
    line-height: 1.2;
}

.cal-cell.today .cell-label {
    background: rgba(108, 99, 255, .2);
    color: var(--accent);
}

.cal-cell.yesterday .cell-label {
    background: rgba(255, 101, 132, .15);
    color: var(--accent2);
}

.reminder-badge {
    position: absolute;
    top: 4px;
    right: 4px;
    width: 7px;
    height: 7px;
    border-radius: 50%;
    background: var(--accent3);
}

/* ===== MODAL ===== */
.modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, .75);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    z-index: 200;
    display: flex;
    align-items: flex-end;
    justify-content: center;
    opacity: 0;
    pointer-events: none;
    transition: opacity .25s;
}

.modal-overlay.open {
    opacity: 1;
    pointer-events: all;
}

.modal {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 24px 24px 0 0;
    width: 100%;
    max-height: 92vh;
    overflow-y: auto;
    padding: 24px 20px;
    padding-bottom: calc(24px + env(safe-area-inset-bottom));
    position: relative;
    transform: translateY(30px);
    transition: transform .3s cubic-bezier(.34, 1.56, .64, 1);
    box-shadow: 0 -20px 60px rgba(0, 0, 0, .5);
}

.modal::after {
    content: '';
    position: absolute;
    top: 10px;
    left: 50%;
    transform: translateX(-50%);
    width: 40px;
    height: 4px;
    background: var(--border);
    border-radius: 999px;
}

.modal::before {
    content: '';
    position: absolute;
    top: -1px;
    left: 20%;
    right: 20%;
    height: 2px;
    background: linear-gradient(90deg, transparent, var(--accent), transparent);
    border-radius: 999px;
}

.modal-overlay.open .modal {
    transform: translateY(0);
}

.modal-header {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    margin-bottom: 22px;
    margin-top: 8px;
}

.modal-date {
    font-family: 'Syne', sans-serif;
    font-size: 20px;
    font-weight: 700;
}

.modal-date-sub {
    font-size: 13px;
    color: var(--text2);
    margin-top: 4px;
}

.modal-close {
    width: 34px;
    height: 34px;
    background: var(--surface2);
    border: 1px solid var(--border);
    border-radius: 8px;
    color: var(--text2);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 16px;
    transition: all .2s;
    flex-shrink: 0;
}

.modal-close:hover {
    border-color: var(--danger);
    color: var(--danger);
}

/* ===== SUBJECTS ===== */
.subjects-list {
    display: flex;
    flex-direction: column;
    gap: 14px;
    margin-bottom: 16px;
}

.subject-card {
    background: var(--surface2);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    padding: 14px;
    position: relative;
}

.subject-card-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 10px;
}

.subject-num {
    font-size: 10px;
    font-weight: 700;
    color: var(--text3);
    letter-spacing: .1em;
    text-transform: uppercase;
}

.remove-subject {
    background: transparent;
    border: none;
    color: var(--text3);
    cursor: pointer;
    font-size: 16px;
    transition: color .2s;
    padding: 0;
    line-height: 1;
}

.remove-subject:hover {
    color: var(--danger);
}

.inp-row {
    display: grid;
    grid-template-columns: 1fr;
    gap: 10px;
}

.mini-inp {
    width: 100%;
    padding: 11px 13px;
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: 8px;
    color: var(--text);
    font-family: 'Space Grotesk', sans-serif;
    font-size: 14px;
    outline: none;
    transition: border .2s;
    resize: vertical;
    -webkit-appearance: none;
}

.mini-inp:focus {
    border-color: var(--accent);
    box-shadow: 0 0 0 3px rgba(108, 99, 255, .12);
}

.mini-inp.textarea {
    min-height: 88px;
}

.inp-label {
    font-size: 10px;
    font-weight: 700;
    color: var(--text2);
    letter-spacing: .08em;
    text-transform: uppercase;
    margin-bottom: 6px;
    display: block;
}

.add-subject-btn {
    width: 100%;
    padding: 13px;
    background: transparent;
    border: 2px dashed var(--border);
    border-radius: var(--radius-sm);
    color: var(--text2);
    cursor: pointer;
    font-family: 'Space Grotesk', sans-serif;
    font-size: 14px;
    font-weight: 500;
    transition: all .2s;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    margin-bottom: 20px;
}

.add-subject-btn:hover,
.add-subject-btn:active {
    border-color: var(--accent);
    color: var(--accent);
}

.modal-footer {
    display: flex;
    gap: 10px;
    justify-content: flex-end;
}

.btn-secondary {
    padding: 12px 20px;
    background: var(--surface2);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    color: var(--text2);
    cursor: pointer;
    font-family: 'Space Grotesk', sans-serif;
    font-size: 14px;
    font-weight: 500;
    transition: all .2s;
}

.btn-secondary:hover {
    border-color: var(--text);
    color: var(--text);
}

.btn-save {
    flex: 1;
    padding: 12px 20px;
    background: linear-gradient(135deg, var(--accent), #8b5cf6);
    border: none;
    border-radius: var(--radius-sm);
    color: #fff;
    cursor: pointer;
    font-family: 'Space Grotesk', sans-serif;
    font-size: 14px;
    font-weight: 600;
    transition: all .2s;
    -webkit-appearance: none;
}

.btn-save:hover {
    box-shadow: 0 6px 24px rgba(108, 99, 255, .4);
}

.btn-save:active {
    transform: scale(.98);
}

/* ===== STATS ===== */
.stats-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
    margin-bottom: 28px;
}

.stat-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 20px 16px;
}

.stat-card-label {
    font-size: 11px;
    font-weight: 600;
    color: var(--text2);
    letter-spacing: .06em;
    text-transform: uppercase;
    margin-bottom: 10px;
    line-height: 1.4;
}

.stat-card-val {
    font-family: 'Syne', sans-serif;
    font-size: 34px;
    font-weight: 800;
    line-height: 1;
}

.stat-card-val.green {
    color: var(--success);
}

.stat-card-val.red {
    color: var(--danger);
}

.stat-card-val.yellow {
    color: var(--warn);
}

.stat-card-val.purple {
    background: linear-gradient(135deg, var(--accent), var(--accent2));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.section-title {
    font-family: 'Syne', sans-serif;
    font-size: 18px;
    font-weight: 700;
    margin-bottom: 14px;
}

.table-wrap {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    overflow: hidden;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
}

.subject-table {
    width: 100%;
    border-collapse: collapse;
    min-width: 480px;
}

.subject-table th {
    text-align: left;
    padding: 10px 14px;
    font-size: 10px;
    font-weight: 700;
    color: var(--text3);
    letter-spacing: .1em;
    text-transform: uppercase;
    border-bottom: 1px solid var(--border);
    white-space: nowrap;
}

.subject-table td {
    padding: 12px 14px;
    border-bottom: 1px solid rgba(42, 42, 61, .4);
    font-size: 13px;
}

.subject-table tr:last-child td {
    border-bottom: none;
}

.subject-table tr:hover td {
    background: rgba(255, 255, 255, .02);
}

.badge {
    display: inline-block;
    padding: 3px 9px;
    border-radius: 999px;
    font-size: 10px;
    font-weight: 700;
    letter-spacing: .04em;
    white-space: nowrap;
}

.badge-green {
    background: rgba(46, 213, 115, .15);
    color: var(--success);
}

.badge-red {
    background: rgba(255, 71, 87, .15);
    color: var(--danger);
}

.badge-yellow {
    background: rgba(255, 165, 2, .15);
    color: var(--warn);
}

.badge-purple {
    background: rgba(108, 99, 255, .15);
    color: var(--accent);
}

/* ===== TOAST ===== */
.toast {
    position: fixed;
    bottom: 80px;
    left: 50%;
    transform: translateX(-50%) translateY(20px);
    z-index: 999;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    padding: 12px 20px;
    font-size: 14px;
    font-weight: 500;
    box-shadow: 0 8px 40px rgba(0, 0, 0, .4);
    opacity: 0;
    transition: all .3s;
    pointer-events: none;
    white-space: nowrap;
    max-width: calc(100vw - 32px);
}

.toast.show {
    transform: translateX(-50%) translateY(0);
    opacity: 1;
}

.toast.success {
    border-color: var(--success);
    color: var(--success);
}

.toast.error {
    border-color: var(--danger);
    color: var(--danger);
}

/* ===== BOT PAGE ===== */
.bot-setup {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 24px 20px;
    max-width: 560px;
}

.bot-setup h2 {
    font-family: 'Syne', sans-serif;
    font-size: 20px;
    font-weight: 700;
    margin-bottom: 8px;
}

.bot-setup p {
    color: var(--text2);
    font-size: 14px;
    line-height: 1.6;
    margin-bottom: 20px;
}

.step-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
    margin-bottom: 20px;
}

.step-item {
    display: flex;
    gap: 12px;
    align-items: flex-start;
}

.step-num {
    width: 26px;
    height: 26px;
    border-radius: 50%;
    background: rgba(108, 99, 255, .2);
    color: var(--accent);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 11px;
    font-weight: 700;
    flex-shrink: 0;
    margin-top: 2px;
}

.step-text {
    font-size: 14px;
    color: var(--text2);
    line-height: 1.6;
}

.step-text code {
    background: var(--surface2);
    border: 1px solid var(--border);
    border-radius: 4px;
    padding: 1px 6px;
    color: var(--accent);
    font-size: 13px;
}

/* ===== ENTRY VIEW ===== */
.entry-view {
    background: var(--surface2);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    padding: 13px;
    margin-bottom: 10px;
}

.entry-view-subject {
    font-size: 13px;
    font-weight: 700;
    color: var(--accent);
    margin-bottom: 5px;
}

.entry-view-notes {
    font-size: 14px;
    color: var(--text);
    line-height: 1.6;
    white-space: pre-wrap;
}

/* ===== EMPTY STATE ===== */
.empty-state {
    text-align: center;
    padding: 48px 16px;
    color: var(--text2);
}

.empty-state .emoji {
    font-size: 44px;
    margin-bottom: 14px;
    display: block;
}

.empty-state h3 {
    font-family: 'Syne', sans-serif;
    font-size: 20px;
    color: var(--text);
    margin-bottom: 8px;
}

.empty-state p {
    font-size: 14px;
    line-height: 1.5;
}

/* ===== LOADER ===== */
.loader {
    width: 20px;
    height: 20px;
    border: 2px solid var(--border);
    border-top-color: var(--accent);
    border-radius: 50%;
    animation: spin .7s linear infinite;
    display: inline-block;
}

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}

/* ================================================
   RESPONSIVE
================================================ */

/* Tablet 641+ */
@media(min-width:641px) {
    .auth-card {
        padding: 44px 36px;
    }

    .auth-logo {
        font-size: 28px;
    }

    .modal-overlay {
        align-items: center;
        padding: 20px;
    }

    .modal {
        border-radius: 24px;
        max-width: 580px;
        padding: 32px;
        padding-bottom: 32px;
    }

    .modal::after {
        display: none;
    }

    .stats-grid {
        grid-template-columns: repeat(4, 1fr);
    }

    .cal-grid {
        gap: 8px;
    }

    .cal-cell .day-num {
        font-size: 15px;
    }

    .btn-save {
        flex: none;
    }

    .toast {
        left: auto;
        right: 24px;
        bottom: 24px;
        transform: translateY(20px);
    }

    .toast.show {
        transform: translateY(0);
    }
}

/* Desktop 1024+ */
@media(min-width:1024px) {
    .navbar {
        padding: 0 32px;
    }

    .nav-tab {
        font-size: 14px;
        padding: 8px 16px;
    }

    .page {
        padding: 32px;
    }

    .cal-title {
        font-size: 32px;
    }

    .cal-grid {
        gap: 10px;
    }

    .cal-cell .day-num {
        font-size: 16px;
    }

    .modal::before {
        left: 15%;
        right: 15%;
    }

    .modal-date {
        font-size: 22px;
    }

    .stats-grid {
        gap: 16px;
    }

    .stat-card {
        padding: 24px;
    }

    .stat-card-val {
        font-size: 38px;
    }

    .bot-setup {
        padding: 32px;
    }

    .toast {
        right: 32px;
        bottom: 32px;
    }

    /* Desktop: bottom nav va mobile drawer yashirin */
    .bottom-nav {
        display: none !important;
    }

    .profile-drawer {
        display: none !important;
    }

    .drawer-overlay {
        display: none !important;
    }

    /* Desktop: nav-avatar-btn ko'rinsin */
    .nav-avatar-btn {
        display: flex;
    }
}

/* Mobile max 640 */
@media(max-width:640px) {

    /* Bottom nav */
    .bottom-nav {
        display: flex;
    }

    /* Navbar: tab va desktop elementlar yashirin */
    .nav-tabs {
        display: none !important;
    }

    .btn-logout {
        display: none !important;
    }

    .nav-avatar-btn {
        display: none !important;
    }

    .nav-dropdown {
        display: none !important;
    }

    /* Scroll muammosi hal */
    body {
        overflow-y: auto;
    }

    /* Page padding */
    .page {
        padding: 16px;
        padding-bottom: calc(var(--bottom-nav-h) + 20px + env(safe-area-inset-bottom));
    }

    /* Calendar */
    .cal-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 12px;
        margin-bottom: 16px;
    }

    .cal-title {
        font-size: 22px;
    }

    .cal-nav {
        width: 100%;
        justify-content: space-between;
    }

    .cal-month-label {
        font-size: 14px;
        min-width: auto;
        flex: 1;
    }

    .cal-grid {
        gap: 4px;
    }

    .cal-day-header {
        font-size: 9px;
        padding: 6px 2px;
    }

    .cal-cell {
        border-radius: 8px;
    }

    .cal-cell .day-num {
        font-size: 13px;
    }

    .cal-cell .cell-label {
        font-size: 7px;
        padding: 1px 4px;
    }

    /* Stats */
    .stats-grid {
        grid-template-columns: 1fr 1fr;
        gap: 10px;
    }

    .stat-card {
        padding: 16px 12px;
    }

    .stat-card-val {
        font-size: 28px;
    }

    .stat-card-label {
        font-size: 10px;
    }

    .section-title {
        font-size: 16px;
    }

    /* Modal */
    .modal {
        padding: 20px 16px;
    }

    .modal-date {
        font-size: 18px;
    }

    .modal-footer {
        flex-direction: column-reverse;
    }

    .btn-secondary,
    .btn-save {
        width: 100%;
        text-align: center;
        justify-content: center;
    }

    .btn-save {
        flex: none;
    }

    /* Bot */
    .bot-setup {
        padding: 20px 16px;
    }

    /* Auth */
    .auth-card {
        padding: 28px 20px;
        border-radius: 20px;
    }

    .auth-logo {
        font-size: 24px;
    }

    /* Toast */
    .toast {
        left: 16px;
        right: 16px;
        width: auto;
        bottom: calc(var(--bottom-nav-h) + 12px);
        transform: translateY(10px);
        text-align: center;
        max-width: none;
        white-space: normal;
    }

    .toast.show {
        transform: translateY(0);
    }
}

/* Very small */
@media(max-width:360px) {
    .cal-cell .cell-label {
        display: none;
    }

    .stat-card-val {
        font-size: 24px;
    }

    .auth-card {
        padding: 24px 16px;
    }
}