@media (max-width: 850px) {
    #login-screen {
        flex-direction: column !important;
    }

    .login-left,
    .login-right {
        width: 100vw !important;
        height: 50vh !important;
        flex: 0 0 50vh !important;
        padding: 20px;
    }

    .login-brand h1 {
        font-size: 2.5rem;
    }
}

@media (max-width: 768px) {
    .app-container {
        grid-template-columns: 1fr !important;
        display: block !important;
    }

    .sidebar {
        position: fixed !important;
        top: 0;
        left: 0;
        width: 280px !important;
        height: 100vh !important;
        z-index: 1000 !important;
        transform: translateX(-100%);
        transition: transform 0.3s ease;
    }

    .sidebar.active {
        transform: translateX(0);
    }

    #login-screen {
        flex-direction: column !important;
        justify-content: center !important;
        align-items: center !important;
        gap: 28px !important;
        padding: 24px !important;
        background-color: #0b0f17 !important;
        background-image:
            radial-gradient(circle at 15% 15%, rgba(16, 185, 129, 0.18) 0%, transparent 45%),
            radial-gradient(circle at 85% 85%, rgba(30, 64, 175, 0.55) 0%, rgba(15, 23, 42, 0.92) 55%, #0b0f17 95%) !important;
        overflow-y: auto !important;
    }

    .login-left {
        width: 100% !important;
        height: auto !important;
        flex: 0 0 auto !important;
        padding: 0 !important;
        background: transparent !important;
        background-image: none !important;
        position: static !important;
    }

    .login-brand {
        gap: 10px !important;
    }

    .login-brand h1 {
        font-size: 2.2rem !important;
        letter-spacing: -1px !important;
        color: #f1f5f9 !important;
    }

    .login-brand p {
        font-size: 0.85rem !important;
        letter-spacing: 2px !important;
        margin: -5px 0 0 0 !important;
    }

    .login-left footer {
        display: block !important;
        position: fixed !important;
        bottom: 16px !important;
        left: 0 !important;
        width: 100% !important;
        font-size: 0.7rem !important;
        color: #64748b !important;
    }

    .login-right {
        width: 100% !important;
        max-width: 370px !important;
        height: auto !important;
        flex: 0 0 auto !important;
        background: transparent !important;
        padding: 0 !important;
    }

    .login-card {
        width: 100% !important;
        max-width: 100% !important;
        background: rgba(19, 27, 38, 0.82) !important;
        backdrop-filter: blur(16px) !important;
        -webkit-backdrop-filter: blur(16px) !important;
        border: 1px solid rgba(255, 255, 255, 0.08) !important;
        border-radius: 20px !important;
        padding: 28px 22px !important;
        box-shadow: 0 20px 45px rgba(0, 0, 0, 0.55) !important;
    }

    .login-card h2 {
        font-size: 1.25rem !important;
        margin-bottom: 20px !important;
        color: #f1f5f9 !important;
    }

    .login-tabs {
        background: rgba(255, 255, 255, 0.1) !important;
    }

    .login-tab {
        color: #f1f5f9 !important;
    }

    .login-card input.login-input {
        height: 46px !important;
        font-size: 0.92rem !important;
        border-radius: 10px !important;
        padding: 0 14px !important;
        background: rgba(11, 15, 23, 0.9) !important;
        border: 1px solid rgba(255, 255, 255, 0.1) !important;
        color: #f1f5f9 !important;
    }

    .login-card input.login-input::placeholder {
        color: #64748b !important;
    }

    .login-card input.login-input:focus {
        background: #0b0f17 !important;
        color: #f1f5f9 !important;
        border-color: #10b981 !important;
    }

    .login-card .btn-login {
        height: 46px !important;
        border-radius: 10px !important;
        font-size: 0.95rem !important;
        background: linear-gradient(135deg, #10b981 0%, #059669 100%) !important;
    }

    .content {
        padding: 15px !important;
    }

    header {
        flex-direction: column !important;
        align-items: flex-start !important;
        gap: 15px !important;
    }

    .cards-grid {
        grid-template-columns: 1fr !important;
    }

    .dashboard-panels {
        grid-template-columns: 1fr !important;
    }

    .grid-list {
        grid-template-columns: 1fr !important;
    }

    .modal {
        width: 100vw !important;
        height: 100vh !important;
        max-width: none !important;
        max-height: none !important;
        border-radius: 0 !important;
        padding: 15px !important;
    }

    .calendar-wrapper {
        padding: 15px !important;
    }

    .calendar-header h3 {
        font-size: 1.1rem !important;
    }

    .cal-nav-btn {
        padding: 6px 10px !important;
    }

    .calendar-weekdays {
        font-size: 0.75rem !important;
        margin-bottom: 5px !important;
    }

    .calendar-grid {
        gap: 4px !important;
    }

    .day-cell {
        min-height: 55px !important;
        padding: 4px !important;
        display: flex !important;
        flex-direction: row !important;
        flex-wrap: wrap !important;
        justify-content: center !important;
        align-content: flex-start !important;
        border-radius: 8px !important;
    }

    .day-number {
        width: 100%;
        text-align: center;
        font-size: 0.85rem !important;
        margin-bottom: 2px !important;
    }

    .calendar-event-name {
        width: 6px !important;
        height: 6px !important;
        border-radius: 50% !important;
        padding: 0 !important;
        margin: 2px !important;
        color: transparent !important;
        border: none !important;
        overflow: hidden !important;
        text-indent: -9999px !important;
        display: inline-block !important;
        min-width: 0 !important;
    }
}

.mobile-menu-btn {
    display: none;
    background: transparent;
    border: none;
    color: var(--text-main);
    font-size: 1.5rem;
    cursor: pointer;
    margin-right: 15px;
}

@media (max-width: 768px) {
    .mobile-menu-btn {
        display: block !important;
    }
}

.sidebar-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(2px);
    z-index: 99;
    display: none;
}